{"pageNumber":"122","pageRowStart":"3025","pageSize":"25","recordCount":11370,"records":[{"id":70036079,"text":"70036079 - 2011 - Alaska North Slope regional gas hydrate production modeling forecasts","interactions":[],"lastModifiedDate":"2021-02-02T20:40:58.45809","indexId":"70036079","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Alaska North Slope regional gas hydrate production modeling forecasts","docAbstract":"A series of gas hydrate development scenarios were created to assess the range of outcomes predicted for the possible development of the “Eileen” gas hydrate accumulation, North Slope, Alaska. Production forecasts for the “reference case” were built using the 2002 Mallik production tests, mechanistic simulation, and geologic studies conducted by the US Geological Survey. Three additional scenarios were considered: A “downside-scenario” which fails to identify viable production, an “upside-scenario” describes results that are better than expected. To capture the full range of possible outcomes and balance the downside case, an “extreme upside scenario” assumes each well is exceptionally productive.
Starting with a representative type-well simulation forecasts, field development timing is applied and the sum of individual well forecasts creating the field-wide production forecast. This technique is commonly used to schedule large-scale resource plays where drilling schedules are complex and production forecasts must account for many changing parameters. The complementary forecasts of rig count, capital investment, and cash flow can be used in a pre-appraisal assessment of potential commercial viability.
Since no significant gas sales are currently possible on the North Slope of Alaska, typical parameters were used to create downside, reference, and upside case forecasts that predict from 0 to 71 BM3 (2.5 tcf) of gas may be produced in 20 years and nearly 283 BM3 (10 tcf) ultimate recovery after 100 years.
Outlining a range of possible outcomes enables decision makers to visualize the pace and milestones that will be required to evaluate gas hydrate resource development in the Eileen accumulation. Critical values of peak production rate, time to meaningful production volumes, and investments required to rule out a downside case are provided. Upside cases identify potential if both depressurization and thermal stimulation yield positive results. An “extreme upside” case captures the full potential of unconstrained development with widely spaced wells. The results of this study indicate that recoverable gas hydrate resources may exist in the Eileen accumulation and that it represents a good opportunity for continued research.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2010.03.007","issn":"02648172","usgsCitation":"Wilson, S., Hunter, R., Collett, T.S., Hancock, S., Boswell, R., and Anderson, B., 2011, Alaska North Slope regional gas hydrate production modeling forecasts: Marine and Petroleum Geology, v. 28, no. 2, p. 460-477, https://doi.org/10.1016/j.marpetgeo.2010.03.007.","productDescription":"18 p.","startPage":"460","endPage":"477","costCenters":[],"links":[{"id":246458,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218448,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2010.03.007"}],"country":"United States","state":"Alaska","otherGeospatial":"North Slope","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -167.255859375,\n 67.90861918215302\n ],\n [\n -141.064453125,\n 67.90861918215302\n ],\n [\n -141.064453125,\n 72.18180355624855\n ],\n [\n -167.255859375,\n 72.18180355624855\n ],\n [\n -167.255859375,\n 67.90861918215302\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e932e4b0c8380cd48157","contributors":{"authors":[{"text":"Wilson, S.J.","contributorId":93734,"corporation":false,"usgs":true,"family":"Wilson","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":454081,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunter, R.B.","contributorId":29538,"corporation":false,"usgs":true,"family":"Hunter","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":454076,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":454080,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hancock, S.","contributorId":71742,"corporation":false,"usgs":false,"family":"Hancock","given":"S.","email":"","affiliations":[],"preferred":false,"id":454079,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Boswell, R.","contributorId":35121,"corporation":false,"usgs":true,"family":"Boswell","given":"R.","affiliations":[],"preferred":false,"id":454077,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Anderson, B.J.","contributorId":70914,"corporation":false,"usgs":true,"family":"Anderson","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":454078,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70036047,"text":"70036047 - 2011 - Downhole well log and core montages from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","interactions":[],"lastModifiedDate":"2021-02-03T19:27:08.822347","indexId":"70036047","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Downhole well log and core montages from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","docAbstract":"The BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well was an integral part of an ongoing project to determine the future energy resource potential of gas hydrates on the Alaska North Slope. As part of this effort, the Mount Elbert well included an advanced downhole geophysical logging program. Because gas hydrate is unstable at ground surface pressure and temperature conditions, a major emphasis was placed on the downhole-logging program to determine the occurrence of gas hydrates and the in-situ physical properties of the sediments. In support of this effort, well-log and core data montages have been compiled which include downhole log and core-data obtained from the gas-hydrate-bearing sedimentary section in the Mount Elbert well. Also shown are numerous reservoir parameters, including gas-hydrate saturation and sediment porosity log traces calculated from available downhole well log and core data.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2010.03.016","issn":"02648172","usgsCitation":"Collett, T.S., Lewis, R., Winters, W.J., Lee, M.W., Rose, K., and Boswell, R., 2011, Downhole well log and core montages from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Marine and Petroleum Geology, v. 28, no. 2, p. 561-577, https://doi.org/10.1016/j.marpetgeo.2010.03.016.","productDescription":"17 p.","startPage":"561","endPage":"577","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":475448,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/4388","text":"External Repository"},{"id":246457,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218447,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2010.03.016"}],"country":"United States","state":"Alaska","otherGeospatial":"Alaska North Slope","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -166.728515625,\n 67.33986082559095\n ],\n [\n -141.064453125,\n 67.33986082559095\n ],\n [\n -141.064453125,\n 71.18775391813158\n ],\n [\n -166.728515625,\n 71.18775391813158\n ],\n [\n -166.728515625,\n 67.33986082559095\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a03b3e4b0c8380cd505fd","contributors":{"authors":[{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":453771,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewis, R.E.","contributorId":31735,"corporation":false,"usgs":true,"family":"Lewis","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":453768,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Winters, William J. bwinters@usgs.gov","contributorId":522,"corporation":false,"usgs":true,"family":"Winters","given":"William","email":"bwinters@usgs.gov","middleInitial":"J.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":453769,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lee, Myung W.","contributorId":84358,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","middleInitial":"W.","affiliations":[],"preferred":false,"id":453770,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rose, K.K.","contributorId":102306,"corporation":false,"usgs":true,"family":"Rose","given":"K.K.","email":"","affiliations":[],"preferred":false,"id":453773,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Boswell, R.M.","contributorId":94534,"corporation":false,"usgs":true,"family":"Boswell","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":453772,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70036007,"text":"70036007 - 2011 - Gas production from a cold, stratigraphically-bounded gas hydrate deposit at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Implications of uncertainties","interactions":[],"lastModifiedDate":"2021-02-03T21:18:16.850368","indexId":"70036007","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Gas production from a cold, stratigraphically-bounded gas hydrate deposit at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Implications of uncertainties","docAbstract":"As part of an effort to identify suitable targets for a planned long-term field test, we investigate by means of numerical simulation the gas production potential from unit D, a stratigraphically bounded (Class 3) permafrost-associated hydrate occurrence penetrated in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well on North Slope, Alaska. This shallow, low-pressure deposit has high porosities (ϕ = 0.4), high intrinsic permeabilities (k = 10−12 m2) and high hydrate saturations (SH = 0.65). It has a low temperature (T = 2.3–2.6 °C) because of its proximity to the overlying permafrost. The simulation results indicate that vertical wells operating at a constant bottomhole pressure would produce at very low rates for a very long period. Horizontal wells increase gas production by almost two orders of magnitude, but production remains low. Sensitivity analysis indicates that the initial deposit temperature is by the far the most important factor determining production performance (and the most effective criterion for target selection) because it controls the sensible heat available to fuel dissociation. Thus, a 1 °C increase in temperature is sufficient to increase the production rate by a factor of almost 8. Production also increases with a decreasing hydrate saturation (because of a larger effective permeability for a given k), and is favored (to a lesser extent) by anisotropy.
Spatial trends and comparative changes in time of selected trace elements were studied in liver tissue from polar bears from ten different subpopulation locations in Alaska, Canadian Arctic and East Greenland. For nine of the trace elements (As, Cd, Cu, Hg, Mn, Pb, Rb, Se and Zn) spatial trends were investigated in 136 specimens sampled during 2005–2008 from bears from these ten subpopulations. Concentrations of Hg, Se and As were highest in the (northern and southern) Beaufort Sea area and lowest in (western and southern) Hudson Bay area and Chukchi/Bering Sea. In contrast, concentrations of Cd showed an increasing trend from east to west. Minor or no spatial trends were observed for Cu, Mn, Rb and Zn. Spatial trends were in agreement with previous studies, possibly explained by natural phenomena. To assess temporal changes of Cd, Hg, Se and Zn concentrations during the last decades, we compared our results to previously published data. These time comparisons suggested recent Hg increase in East Greenland polar bears. This may be related to Hg emissions and/or climate-induced changes in Hg cycles or changes in the polar bear food web related to global warming. Also, Hg : Se molar ratio has increased in East Greenland polar bears, which suggests there may be an increased risk for Hg2+-mediated toxicity. Since the underlying reasons for spatial trends or changes in time of trace elements in the Arctic are still largely unknown, future studies should focus on the role of changing climate and trace metal emissions on geographical and temporal trends of trace elements.
","language":"English","publisher":"Royal Society of Chemistry","doi":"10.1039/c1em10088b","usgsCitation":"Routti, H., Letcher, R., Born, E.W., Branigan, M., Dietz, R., Evans, T., Fisk, A.T., Peacock, E.L., and Sonne, C., 2011, Spatial and temporal trends of selected trace elements in liver tissue from polar bears (Ursus maritimus) from Alaska, Canada and Greenland: Journal of Environmental Monitoring, v. 13, no. 8, p. 2260-2267, https://doi.org/10.1039/c1em10088b.","productDescription":"8 p.","startPage":"2260","endPage":"2267","costCenters":[],"links":[{"id":243950,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States, Canada, Greenland","state":"Alasksa","otherGeospatial":"Alaska, Canada and Greenland","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -169.45312499999997,\n 57.326521225217064\n ],\n [\n -37.265625,\n 57.326521225217064\n ],\n [\n -37.265625,\n 85.34532513469132\n ],\n [\n -169.45312499999997,\n 85.34532513469132\n ],\n [\n -169.45312499999997,\n 57.326521225217064\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"13","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b944be4b08c986b31a9ad","contributors":{"authors":[{"text":"Routti, Heli","contributorId":56879,"corporation":false,"usgs":false,"family":"Routti","given":"Heli","email":"","affiliations":[{"id":7238,"text":"Norwegian Polar Institute","active":true,"usgs":false}],"preferred":false,"id":452203,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Letcher, Robert J.","contributorId":25292,"corporation":false,"usgs":true,"family":"Letcher","given":"Robert J.","affiliations":[],"preferred":false,"id":452198,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Born, Erik W.","contributorId":8379,"corporation":false,"usgs":false,"family":"Born","given":"Erik","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":452197,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Branigan, Marsha","contributorId":55236,"corporation":false,"usgs":false,"family":"Branigan","given":"Marsha","email":"","affiliations":[{"id":33080,"text":"Environment and Natural Resources, Government of Northwest Territories, Inuvik, NT, Canada","active":true,"usgs":false}],"preferred":false,"id":452202,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dietz, Rune","contributorId":41741,"corporation":false,"usgs":true,"family":"Dietz","given":"Rune","affiliations":[],"preferred":false,"id":452199,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Evans, Thomas J.","contributorId":174904,"corporation":false,"usgs":false,"family":"Evans","given":"Thomas J.","affiliations":[{"id":13235,"text":"U.S. Fish and Wildlife Service, Marine Mammals Management","active":true,"usgs":false}],"preferred":false,"id":452205,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fisk, Aaron T.","contributorId":127340,"corporation":false,"usgs":false,"family":"Fisk","given":"Aaron","email":"","middleInitial":"T.","affiliations":[{"id":6778,"text":"University of Windsor, Windsor, Ontario, Canada","active":true,"usgs":false}],"preferred":false,"id":452200,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Peacock, Elizabeth L. 0000-0001-7279-0329 lpeacock@usgs.gov","orcid":"https://orcid.org/0000-0001-7279-0329","contributorId":3361,"corporation":false,"usgs":true,"family":"Peacock","given":"Elizabeth","email":"lpeacock@usgs.gov","middleInitial":"L.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":false,"id":452201,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Sonne, Christian","contributorId":28527,"corporation":false,"usgs":true,"family":"Sonne","given":"Christian","affiliations":[],"preferred":false,"id":452204,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70035753,"text":"70035753 - 2011 - Volcanic plume height measured by seismic waves based on a mechanical model","interactions":[],"lastModifiedDate":"2013-03-14T11:06:38","indexId":"70035753","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Volcanic plume height measured by seismic waves based on a mechanical model","docAbstract":"In August 2008 an unmonitored, largely unstudied Aleutian volcano, Kasatochi, erupted catastrophically. Here we use seismic data to infer the height of large eruptive columns such as those of Kasatochi based on a combination of existing fluid and solid mechanical models. In so doing, we propose a connection between a common, observable, short-period seismic wave amplitude to the physics of an eruptive column. To construct a combined model, we estimate the mass ejection rate of material from the vent on the basis of the plume height, assuming that the height is controlled by thermal buoyancy for a continuous plume. Using the estimated mass ejection rate, we then derive the equivalent vertical force on the Earth through a momentum balance. Finally, we calculate the far-field surface waves resulting from the vertical force. The model performs well for recent eruptions of Kasatochi and Augustine volcanoes if v, the velocity of material exiting the vent, is 120-230 m s-1. The consistency between the seismically inferred and measured plume heights indicates that in these cases the far-field ~1 s seismic energy radiated by fluctuating flow in the volcanic jet during the eruption is a useful indicator of overall mass ejection rates. Thus, use of the model holds promise for characterizing eruptions and evaluating ash hazards to aircraft in real time on the basis of far-field short-period seismic data. This study emphasizes the need for better measurements of eruptive plume heights and a more detailed understanding of the full spectrum of seismic energy radiated coeruptively.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research B: Solid Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","publisherLocation":"Washington, D.C.","doi":"10.1029/2010JB007620","isbn":"01480227","usgsCitation":"Prejean, S.G., and Brodsky, E.E., 2011, Volcanic plume height measured by seismic waves based on a mechanical model: Journal of Geophysical Research B: Solid Earth, v. 116, no. B1, https://doi.org/10.1029/2010JB007620.","productDescription":"13 p.","startPage":"B01306","costCenters":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true}],"links":[{"id":475203,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010jb007620","text":"Publisher Index Page"},{"id":216077,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010JB007620"},{"id":243919,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"116","issue":"B1","noUsgsAuthors":false,"publicationDate":"2011-01-26","publicationStatus":"PW","scienceBaseUri":"505bc2fee4b08c986b32aec8","contributors":{"authors":[{"text":"Prejean, Stephanie G. sprejean@usgs.gov","contributorId":2602,"corporation":false,"usgs":true,"family":"Prejean","given":"Stephanie","email":"sprejean@usgs.gov","middleInitial":"G.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":false,"id":452195,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brodsky, Emily E.","contributorId":29660,"corporation":false,"usgs":true,"family":"Brodsky","given":"Emily","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":452196,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035751,"text":"70035751 - 2011 - Pre- and post-drill comparison of the Mount Elbert gas hydrate prospect, Alaska North Slope","interactions":[],"lastModifiedDate":"2021-02-16T17:16:16.349619","indexId":"70035751","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Pre- and post-drill comparison of the Mount Elbert gas hydrate prospect, Alaska North Slope","docAbstract":"In 2006, the United States Geological Survey (USGS) completed a detailed analysis and interpretation of available 2-D and 3-D seismic data, along with seismic modeling and correlation with specially processed downhole well log data for identifying potential gas hydrate accumulations on the North Slope of Alaska. A methodology was developed for identifying sub-permafrost gas hydrate prospects within the gas hydrate stability zone in the Milne Point area. The study revealed a total of 14 gas hydrate prospects in this area.
In order to validate the gas hydrate prospecting protocol of the USGS and to acquire critical reservoir data needed to develop a longer-term production testing program, a stratigraphic test well was drilled at the Mount Elbert prospect in the Milne Point area in early 2007. The drilling confirmed the presence of two prominent gas-hydrate-bearing units in the Mount Elbert prospect, and high quality well logs and core data were acquired. The post-drill results indicate pre-drill predictions of the reservoir thickness and the gas-hydrate saturations based on seismic and existing well data were 90% accurate for the upper unit (hydrate unit D) and 70% accurate for the lower unit (hydrate unit C), confirming the validity of the USGS approach to gas hydrate prospecting. The Mount Elbert prospect is the first gas hydrate accumulation on the North Slope of Alaska identified primarily on the basis of seismic attribute analysis and specially processed downhole log data. Post-drill well log data enabled a better constraint of the elastic model and the development of an improved approach to the gas hydrate prospecting using seismic attributes.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2009.08.007","issn":"02648172","usgsCitation":"Lee, M.W., Agena, W.F., Collett, T.S., and Inks, T., 2011, Pre- and post-drill comparison of the Mount Elbert gas hydrate prospect, Alaska North Slope: Marine and Petroleum Geology, v. 28, no. 2, p. 578-588, https://doi.org/10.1016/j.marpetgeo.2009.08.007.","productDescription":"11 p.","startPage":"578","endPage":"588","costCenters":[],"links":[{"id":243891,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216050,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2009.08.007"}],"country":"United States","state":"Alaska","otherGeospatial":"North Slope","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -166.9921875,\n 67.33986082559095\n ],\n [\n -140.9765625,\n 67.33986082559095\n ],\n [\n -140.9765625,\n 71.38514208411495\n ],\n [\n -166.9921875,\n 71.38514208411495\n ],\n [\n -166.9921875,\n 67.33986082559095\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a80bbe4b0c8380cd7b17e","contributors":{"authors":[{"text":"Lee, Myung W.","contributorId":84358,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","middleInitial":"W.","affiliations":[],"preferred":false,"id":452188,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Agena, Warren F. wagena@usgs.gov","contributorId":3181,"corporation":false,"usgs":true,"family":"Agena","given":"Warren","email":"wagena@usgs.gov","middleInitial":"F.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":452186,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":452189,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Inks, T.L.","contributorId":79311,"corporation":false,"usgs":true,"family":"Inks","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":452187,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70035699,"text":"70035699 - 2011 - Fire, grazing history, lichen abundance, and winter distribution of caribou in Alaska's taiga","interactions":[],"lastModifiedDate":"2018-04-04T10:16:13","indexId":"70035699","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Fire, grazing history, lichen abundance, and winter distribution of caribou in Alaska's taiga","docAbstract":"In the early 1990s the Nelchina Caribou (Rangifer tarandus) Herd (NCH) began a dramatic shift to its current winter range, migrating at least an additional 100 km beyond its historic range. We evaluated the impacts of fire and grazing history on lichen abundance and subsequent use and distribution by the NCH. Historic (prior to 1990) and current (2002) winter ranges of the NCH had similar vascular vegetation, lichen cover (P = 0.491), and fire histories (P = 0.535), but the former range had significantly less forage lichen biomass as a result of grazing by caribou. Biomass of forage lichens was twice as great overall (P = 0.031) and 4 times greater in caribou selected sites on the current range than in the historic range, greatly increasing availability to caribou. Caribou on the current range selected for stands with >20% lichen cover (P < 0.001), greater than 1,250 kg/ha (P < 0.001) forage lichen biomass and stands older than 80 yr postfire (P < 0.001). After fires, forage lichen cover and biomass seldom recovered sufficiently to attract caribou grazing until after ≥60 yr, and, as a group, primary forage lichen species did not reach maximum abundance until 180 yr postfire. Recovery following overgrazing can occur much more quickly because lichen cover, albeit mostly fragments, and organic substrates remain present. Our results provide benchmarks for wildlife managers assessing condition of caribou winter range and predicting effects of fires on lichen abundance and caribou distribution. Of our measurements of cover and biomass by species, densities and heights of trees, elevation, slope and aspect, only percentage cover by Cladonia amaurocraea, Cladina rangiferina, Flavocetraria cuculata, and lowbush cranberry (Vaccinium vitis‐idaea) were necessary for predicting caribou use of winter range.
","language":"English","publisher":"Wiley","doi":"10.1002/jwmg.39","usgsCitation":"Collins, W.B., Dale, B.W., Adams, L., McElwain, D.E., and Joly, K., 2011, Fire, grazing history, lichen abundance, and winter distribution of caribou in Alaska's taiga: Journal of Wildlife Management, v. 75, no. 2, p. 369-377, https://doi.org/10.1002/jwmg.39.","productDescription":"9 p.","startPage":"369","endPage":"377","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":244076,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"2","noUsgsAuthors":false,"publicationDate":"2011-03-29","publicationStatus":"PW","scienceBaseUri":"505a104ae4b0c8380cd53be8","contributors":{"authors":[{"text":"Collins, William B.","contributorId":190452,"corporation":false,"usgs":false,"family":"Collins","given":"William","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":451968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dale, Bruce W.","contributorId":6769,"corporation":false,"usgs":true,"family":"Dale","given":"Bruce","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":451965,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, Layne G. 0000-0001-6212-2896 ladams@usgs.gov","orcid":"https://orcid.org/0000-0001-6212-2896","contributorId":2776,"corporation":false,"usgs":true,"family":"Adams","given":"Layne G.","email":"ladams@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":451969,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McElwain, Darien E.","contributorId":53623,"corporation":false,"usgs":false,"family":"McElwain","given":"Darien","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":451967,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Joly, Kyle","contributorId":53117,"corporation":false,"usgs":false,"family":"Joly","given":"Kyle","email":"","affiliations":[{"id":12462,"text":"U.S. Department of the Interior, National Park Service","active":true,"usgs":false}],"preferred":false,"id":451966,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033836,"text":"70033836 - 2011 - Stopover habitats of spring migrating surf scoters in southeast Alaska","interactions":[],"lastModifiedDate":"2018-08-21T15:39:17","indexId":"70033836","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Stopover habitats of spring migrating surf scoters in southeast Alaska","docAbstract":"Habitat conditions and nutrient reserve levels during spring migration have been suggested as important factors affecting population declines in waterfowl, emphasizing the need to identify key sites used during spring and understand habitat features and resource availability at stopover sites. We used satellite telemetry to identify stopover sites used by surf scoters migrating through southeast Alaska during spring. We then contrasted habitat features of these sites to those of random sites to determine habitat attributes corresponding to use by migrating scoters. We identified 14 stopover sites based on use by satellite tagged surf scoters from several wintering sites. We identified Lynn Canal as a particularly important stopover site for surf scoters originating throughout the Pacific winter range; approximately half of tagged coastally migrating surf scoters used this site, many for extended periods. Stopover sites were farther from the mainland coast and closer to herring spawn sites than random sites, whereas physical shoreline habitat attributes were generally poor predictors of site use. The geography and resource availability within southeast Alaska provides unique and potentially critical stopover habitat for spring migrating surf scoters. Our work identifies specific sites and habitat resources that deserve conservation and management consideration. Aggregations of birds are vulnerable to human activity impacts such as contaminant spills and resource management decisions. This information is of value to agencies and organizations responsible for emergency response planning, herring fisheries management, and bird and ecosystem conservation.
","language":"English","publisher":"Wiley","doi":"10.1002/jwmg.5","issn":"0022541X","usgsCitation":"Lok, E.K., Esler, D., Takekawa, J.Y., De La Cruz, S., Sean, B.W., Nysewander, D., Evenson, J., and Ward, D.H., 2011, Stopover habitats of spring migrating surf scoters in southeast Alaska: Journal of Wildlife Management, v. 75, no. 1, p. 92-100, https://doi.org/10.1002/jwmg.5.","productDescription":"9 p.","startPage":"92","endPage":"100","numberOfPages":"9","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":242103,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214380,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/jwmg.5"}],"volume":"75","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-01-31","publicationStatus":"PW","scienceBaseUri":"505b9865e4b08c986b31bff5","contributors":{"authors":[{"text":"Lok, Erica K.","contributorId":47183,"corporation":false,"usgs":false,"family":"Lok","given":"Erica","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":442772,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Esler, Daniel 0000-0001-5501-4555 desler@usgs.gov","orcid":"https://orcid.org/0000-0001-5501-4555","contributorId":5465,"corporation":false,"usgs":true,"family":"Esler","given":"Daniel","email":"desler@usgs.gov","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":12437,"text":"Simon Fraser University, Centre for Wildlife Ecology","active":true,"usgs":false},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":442770,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Takekawa, John Y. 0000-0003-0217-5907 john_takekawa@usgs.gov","orcid":"https://orcid.org/0000-0003-0217-5907","contributorId":176168,"corporation":false,"usgs":true,"family":"Takekawa","given":"John","email":"john_takekawa@usgs.gov","middleInitial":"Y.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":442774,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"De La Cruz, S.W.","contributorId":82544,"corporation":false,"usgs":true,"family":"De La Cruz","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":442775,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sean, Boyd W.","contributorId":19791,"corporation":false,"usgs":true,"family":"Sean","given":"Boyd","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":442771,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nysewander, D.R.","contributorId":90946,"corporation":false,"usgs":true,"family":"Nysewander","given":"D.R.","affiliations":[],"preferred":false,"id":442776,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Evenson, J.R.","contributorId":105927,"corporation":false,"usgs":true,"family":"Evenson","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":442777,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ward, David H. 0000-0002-5242-2526 dward@usgs.gov","orcid":"https://orcid.org/0000-0002-5242-2526","contributorId":3247,"corporation":false,"usgs":true,"family":"Ward","given":"David","email":"dward@usgs.gov","middleInitial":"H.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":442773,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70033873,"text":"70033873 - 2011 - Using a genetic mixture model to study phenotypic traits: Differential fecundity among Yukon river Chinook Salmon","interactions":[],"lastModifiedDate":"2018-04-23T10:26:01","indexId":"70033873","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Using a genetic mixture model to study phenotypic traits: Differential fecundity among Yukon river Chinook Salmon","docAbstract":"Fecundity is a vital population characteristic that is directly linked to the productivity of fish populations. Historic data from Yukon River (Alaska) Chinook salmon Oncorhynchus tshawytscha suggest that length‐adjusted fecundity differs among populations within the drainage and either is temporally variable or has declined. Yukon River Chinook salmon have been harvested in large‐mesh gill‐net fisheries for decades, and a decline in fecundity was considered a potential evolutionary response to size‐selective exploitation. The implications for fishery conservation and management led us to further investigate the fecundity of Yukon River Chinook salmon populations. Matched observations of fecundity, length, and genotype were collected from a sample of adult females captured from the multipopulation spawning migration near the mouth of the Yukon River in 2008. These data were modeled by using a new mixture model, which was developed by extending the conditional maximum likelihood mixture model that is commonly used to estimate the composition of multipopulation mixtures based on genetic data. The new model facilitates maximum likelihood estimation of stock‐specific fecundity parameters without first using individual assignment to a putative population of origin, thus avoiding potential biases caused by assignment error. The hypothesis that fecundity of Chinook salmon has declined was not supported; this result implies that fecundity exhibits high interannual variability. However, length‐adjusted fecundity estimates decreased as migratory distance increased, and fecundity was more strongly dependent on fish size for populations spawning in the middle and upper portions of the drainage. These findings provide insights into potential constraints on reproductive investment imposed by long migrations and warrant consideration in fisheries management and conservation. The new mixture model extends the utility of genetic markers to new applications and can be easily adapted to study any observable trait or condition that may vary among populations.
","language":"English","publisher":"Wiley","doi":"10.1080/00028487.2011.558776","issn":"00028487","usgsCitation":"Bromaghin, J.F., Evenson, D., McLain, T., and Flannery, B.G., 2011, Using a genetic mixture model to study phenotypic traits: Differential fecundity among Yukon river Chinook Salmon: Transactions of the American Fisheries Society, v. 140, no. 2, p. 235-249, https://doi.org/10.1080/00028487.2011.558776.","productDescription":"15 p.","startPage":"235","endPage":"249","numberOfPages":"15","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":242205,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214477,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/00028487.2011.558776"}],"volume":"140","issue":"2","noUsgsAuthors":false,"publicationDate":"2011-03-16","publicationStatus":"PW","scienceBaseUri":"505bc021e4b08c986b329f47","contributors":{"authors":[{"text":"Bromaghin, Jeffrey F. 0000-0002-7209-9500 jbromaghin@usgs.gov","orcid":"https://orcid.org/0000-0002-7209-9500","contributorId":139899,"corporation":false,"usgs":true,"family":"Bromaghin","given":"Jeffrey","email":"jbromaghin@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":442956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Evenson, D.F.","contributorId":104356,"corporation":false,"usgs":true,"family":"Evenson","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":442958,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McLain, T.H.","contributorId":15899,"corporation":false,"usgs":true,"family":"McLain","given":"T.H.","email":"","affiliations":[],"preferred":false,"id":442955,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Flannery, Blair G.","contributorId":95675,"corporation":false,"usgs":false,"family":"Flannery","given":"Blair","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":442957,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034088,"text":"70034088 - 2011 - Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences","interactions":[],"lastModifiedDate":"2020-12-08T17:56:48.139145","indexId":"70034088","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2285,"text":"Journal of Fish Biology","active":true,"publicationSubtype":{"id":10}},"title":"Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences","docAbstract":"Arctic cisco Coregonus autumnalis young‐of‐year (YOY) growth was used as a proxy to examine the long‐term response of a high‐latitude fish population to changing climate from 1978 to 2004. YOY growth increased over time (r2 = 0·29) and was correlated with monthly averages of the Arctic oscillation index, air temperature, east wind speed, sea‐ice concentration and river discharge with and without time lags. Overall, the most prevalent correlates to YOY growth were sea‐ice concentration lagged 1 year (significant correlations in 7 months; r2 = 0·14–0·31) and Mackenzie River discharge lagged 2 years (significant correlations in 8 months; r2 = 0·13–0·50). The results suggest that decreased sea‐ice concentrations and increased river discharge fuel primary production and that life cycles of prey species linking increased primary production to fish growth are responsible for the time lag. Oceanographic studies also suggest that sea ice concentration and fluvial inputs from the Mackenzie River are key factors influencing productivity in the Beaufort Sea. Future research should assess the possible mechanism relating sea ice concentration and river discharge to productivity at upper trophic levels.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.2010.02832.x","issn":"00221112","usgsCitation":"von Biela, V.R., Zimmerman, C.E., and Moulton, L., 2011, Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences: Journal of Fish Biology, v. 78, no. 1, p. 39-56, https://doi.org/10.1111/j.1095-8649.2010.02832.x.","productDescription":"18 p.","startPage":"39","endPage":"56","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":244573,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216688,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1095-8649.2010.02832.x"}],"country":"United States, Canada","state":"Alaska","otherGeospatial":"Mackenzie River, Beaufort Sea and the collection location in Nuiqsut, Alaska, along the Colville River.","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -165.9375,\n 55.87531083569679\n ],\n [\n -117.24609374999999,\n 55.87531083569679\n ],\n [\n -117.24609374999999,\n 71.63599288330609\n ],\n [\n -165.9375,\n 71.63599288330609\n ],\n [\n -165.9375,\n 55.87531083569679\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"78","issue":"1","noUsgsAuthors":false,"publicationDate":"2010-12-03","publicationStatus":"PW","scienceBaseUri":"505a4997e4b0c8380cd6873f","contributors":{"authors":[{"text":"von Biela, Vanessa R. 0000-0002-7139-5981 vvonbiela@usgs.gov","orcid":"https://orcid.org/0000-0002-7139-5981","contributorId":3104,"corporation":false,"usgs":true,"family":"von Biela","given":"Vanessa","email":"vvonbiela@usgs.gov","middleInitial":"R.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":444020,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zimmerman, Christian E. 0000-0002-3646-0688 czimmerman@usgs.gov","orcid":"https://orcid.org/0000-0002-3646-0688","contributorId":410,"corporation":false,"usgs":true,"family":"Zimmerman","given":"Christian","email":"czimmerman@usgs.gov","middleInitial":"E.","affiliations":[{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":444019,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moulton, L.L.","contributorId":8907,"corporation":false,"usgs":true,"family":"Moulton","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":444018,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034269,"text":"70034269 - 2011 - Temperature-associated population diversity in salmon confers benefits to mobile consumers","interactions":[],"lastModifiedDate":"2012-12-10T16:39:22","indexId":"70034269","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Temperature-associated population diversity in salmon confers benefits to mobile consumers","docAbstract":"Habitat heterogeneity can generate intraspecific diversity through local adaptation of populations. While it is becoming increasingly clear that population diversity can increase stability in species abundance, less is known about how population diversity can benefit consumers that can integrate across population diversity in their prey. Here we demonstrate cascading effects of thermal heterogeneity on trout–salmon interactions in streams where rainbow trout rely heavily on the seasonal availability of anadromous salmon eggs. Water temperature in an Alaskan stream varied spatially from 5°C to 17.5°C, and spawning sockeye salmon showed population differentiation associated with this thermal heterogeneity. Individuals that spawned early in cool regions of the 5 km long stream were genetically differentiated from those spawning in warmer regions later in the season. Sockeye salmon spawning generates a pulsed resource subsidy that supports the majority of seasonal growth in stream-dwelling rainbow trout. The spatial and temporal structuring of sockeye salmon spawn timing in our focal stream extended the duration of the pulsed subsidy compared to a thermally homogeneous stream with a single population of salmon. Further, rainbow trout adopted movement strategies that exploited the multiple pulses of egg subsidies in the thermally heterogeneous stream. Fish that moved to track the resource pulse grew at rates about 2.5 times higher than those that remained stationary or trout in the reference stream with a single seasonal pulse of eggs. Our results demonstrate that habitat heterogeneity can have important effects on the population diversity of dominant species, and in turn, influence their value to species that prey upon them. Therefore, habitat homogenization may have farther-reaching ecological effects than previously considered.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Ecological Society of America","publisherLocation":"Ithaca, NY","doi":"10.1890/10-1762.1","issn":"00129658","usgsCitation":"Ruff, C.P., Schindle, D.E., Armstrong, J., Bentle, K.T., Brooks, G.T., Holtgrieve, G., McGlauflin, M.T., Torgersen, C., and Seeb, J.E., 2011, Temperature-associated population diversity in salmon confers benefits to mobile consumers: Ecology, v. 92, no. 11, p. 2073-2084, https://doi.org/10.1890/10-1762.1.","productDescription":"12 p.","startPage":"2073","endPage":"2084","numberOfPages":"12","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":216945,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/10-1762.1"},{"id":244847,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba4d4e4b08c986b3205f4","contributors":{"authors":[{"text":"Ruff, Casey P.","contributorId":13065,"corporation":false,"usgs":true,"family":"Ruff","given":"Casey","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":445004,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schindle, Daniel E.","contributorId":33147,"corporation":false,"usgs":true,"family":"Schindle","given":"Daniel","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":445007,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Armstrong, Jonathan B.","contributorId":98567,"corporation":false,"usgs":true,"family":"Armstrong","given":"Jonathan B.","affiliations":[],"preferred":false,"id":445012,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bentle, Kale T.","contributorId":19813,"corporation":false,"usgs":true,"family":"Bentle","given":"Kale","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":445005,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brooks, Gabriel T.","contributorId":27713,"corporation":false,"usgs":true,"family":"Brooks","given":"Gabriel","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":445006,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Holtgrieve, Gordon W.","contributorId":50013,"corporation":false,"usgs":true,"family":"Holtgrieve","given":"Gordon W.","affiliations":[],"preferred":false,"id":445009,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"McGlauflin, Molly T.","contributorId":57300,"corporation":false,"usgs":true,"family":"McGlauflin","given":"Molly","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":445010,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Torgersen, Christian E. 0000-0001-8325-2737","orcid":"https://orcid.org/0000-0001-8325-2737","contributorId":48143,"corporation":false,"usgs":true,"family":"Torgersen","given":"Christian E.","affiliations":[],"preferred":false,"id":445008,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Seeb, James E.","contributorId":87003,"corporation":false,"usgs":true,"family":"Seeb","given":"James","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":445011,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70034378,"text":"70034378 - 2011 - Integument coloration signals reproductive success, heterozygosity, and antioxidant levels in chick-rearing black-legged kittiwakes","interactions":[],"lastModifiedDate":"2020-11-03T15:09:40.509566","indexId":"70034378","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1390,"text":"Die Naturwissenschaften","active":true,"publicationSubtype":{"id":10}},"title":"Integument coloration signals reproductive success, heterozygosity, and antioxidant levels in chick-rearing black-legged kittiwakes","docAbstract":"Carotenoid pigments are important for immunity and as antioxidants, and carotenoid-based colors are believed to provide honest signals of individual quality. Other colorless but more efficient antioxidants such as vitamins A and E may protect carotenoids from bleaching. Carotenoid-based colors have thus recently been suggested to reflect the concentration of such colorless antioxidants, but this has rarely been tested. Furthermore, although evidence is accruing for multiple genetic criteria for mate choice, carotenoid-based colors have rarely been shown to reflect both phenotypic and genetic quality. In this study, we investigated whether gape, tongue, eye-ring, and bill coloration of chick-rearing black-legged kittiwakes Rissa tridactyla reflected circulating levels of carotenoids and vitamins A and E. We further investigated whether integument coloration reflected phenotypic (body condition and fledging success) and genetic quality (heterozygosity). We found that the coloration of fleshy integuments was correlated with carotenoid and vitamin A levels and fledging success but only in males. Furthermore, the coloration of tongue and eye-ring was correlated with heterozygosity in both males and females. Integument colors might therefore be reliable signals of individual quality used by birds to adjust their parental care during the chick-rearing period.
","language":"English","publisher":"Springer","doi":"10.1007/s00114-011-0827-7","usgsCitation":"Leclaire, S., White, J., Arnoux, E., Faivre, B., Vetter, N., Hatch, S.A., and Danchin, E., 2011, Integument coloration signals reproductive success, heterozygosity, and antioxidant levels in chick-rearing black-legged kittiwakes: Die Naturwissenschaften, v. 98, no. 9, p. 773-782, https://doi.org/10.1007/s00114-011-0827-7.","productDescription":"10 p.","startPage":"773","endPage":"782","numberOfPages":"10","costCenters":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":244561,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Middleton Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -146.3993453979492,\n 59.39721924965303\n ],\n [\n -146.26647949218747,\n 59.39721924965303\n ],\n [\n -146.26647949218747,\n 59.47333762375535\n ],\n [\n -146.3993453979492,\n 59.47333762375535\n ],\n [\n -146.3993453979492,\n 59.39721924965303\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"98","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-07-27","publicationStatus":"PW","scienceBaseUri":"505a3c97e4b0c8380cd62e7e","contributors":{"authors":[{"text":"Leclaire, S.","contributorId":39591,"corporation":false,"usgs":true,"family":"Leclaire","given":"S.","email":"","affiliations":[],"preferred":false,"id":445498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"White, J.","contributorId":56355,"corporation":false,"usgs":true,"family":"White","given":"J.","affiliations":[],"preferred":false,"id":445500,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arnoux, E.","contributorId":96514,"corporation":false,"usgs":true,"family":"Arnoux","given":"E.","email":"","affiliations":[],"preferred":false,"id":445503,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Faivre, B.","contributorId":42459,"corporation":false,"usgs":true,"family":"Faivre","given":"B.","email":"","affiliations":[],"preferred":false,"id":445499,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vetter, N.","contributorId":18603,"corporation":false,"usgs":true,"family":"Vetter","given":"N.","email":"","affiliations":[],"preferred":false,"id":445497,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":445501,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Danchin, E.","contributorId":89635,"corporation":false,"usgs":true,"family":"Danchin","given":"E.","affiliations":[],"preferred":false,"id":445502,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70034502,"text":"70034502 - 2011 - Soil carbon distribution in Alaska in relation to soil-forming factors","interactions":[],"lastModifiedDate":"2017-04-06T12:39:12","indexId":"70034502","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1760,"text":"Geoderma","active":true,"publicationSubtype":{"id":10}},"title":"Soil carbon distribution in Alaska in relation to soil-forming factors","docAbstract":"The direction and magnitude of soil organic carbon (SOC) changes in response to climate change remain unclear and depend on the spatial distribution of SOC across landscapes. Uncertainties regarding the fate of SOC are greater in high-latitude systems where data are sparse and the soils are affected by sub-zero temperatures. To address these issues in Alaska, a first-order assessment of data gaps and spatial distributions of SOC was conducted from a recently compiled soil carbon database. Temperature and landform type were the dominant controls on SOC distribution for selected ecoregions. Mean SOC pools (to a depth of 1-m) varied by three, seven and ten-fold across ecoregion, landform, and ecosystem types, respectively. Climate interactions with landform type and SOC were greatest in the uplands. For upland SOC there was a six-fold non-linear increase in SOC with latitude (i.e., temperature) where SOC was lowest in the Intermontane Boreal compared to the Arctic Tundra and Coastal Rainforest. Additionally, in upland systems mineral SOC pools decreased as climate became more continental, suggesting that the lower productivity, higher decomposition rates and fire activity, common in continental climates, interacted to reduce mineral SOC. For lowland systems, in contrast, these interactions and their impacts on SOC were muted or absent making SOC in these environments more comparable across latitudes. Thus, the magnitudes of SOC change across temperature gradients were non-uniform and depended on landform type. Additional factors that appeared to be related to SOC distribution within ecoregions included stand age, aspect, and permafrost presence or absence in black spruce stands. Overall, these results indicate the influence of major interactions between temperature-controlled decomposition and topography on SOC in high-latitude systems. However, there remains a need for more SOC data from wetlands and boreal-region permafrost soils, especially at depths > 1 m in order to fully understand the effects of climate on soil carbon in Alaska.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.geoderma.2011.10.006","issn":"00167061","usgsCitation":"Johnson, K., Harden, J., McGuire, A., Bliss, N., Bockheim, J.G., Clark, M., Nettleton-Hollingsworth, T., Jorgenson, M., Kane, E., Mack, M., O'Donnell, J., Ping, C., Schuur, E., Turetsky, M., and Valentine, D., 2011, Soil carbon distribution in Alaska in relation to soil-forming factors: Geoderma, v. 167-168, p. 71-84, https://doi.org/10.1016/j.geoderma.2011.10.006.","productDescription":"14 p.","startPage":"71","endPage":"84","numberOfPages":"14","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":243505,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215684,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geoderma.2011.10.006"}],"volume":"167-168","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b91efe4b08c986b319bbd","contributors":{"authors":[{"text":"Johnson, K.D.","contributorId":92932,"corporation":false,"usgs":true,"family":"Johnson","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":446110,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harden, J.","contributorId":43918,"corporation":false,"usgs":true,"family":"Harden","given":"J.","email":"","affiliations":[],"preferred":false,"id":446105,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McGuire, A. D.","contributorId":16552,"corporation":false,"usgs":true,"family":"McGuire","given":"A. D.","affiliations":[],"preferred":false,"id":446100,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bliss, N.B. 0000-0003-2409-5211","orcid":"https://orcid.org/0000-0003-2409-5211","contributorId":104094,"corporation":false,"usgs":true,"family":"Bliss","given":"N.B.","affiliations":[],"preferred":false,"id":446112,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bockheim, James G.","contributorId":41948,"corporation":false,"usgs":false,"family":"Bockheim","given":"James","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":446103,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Clark, M.R.","contributorId":88135,"corporation":false,"usgs":true,"family":"Clark","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":446109,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Nettleton-Hollingsworth, T.","contributorId":60087,"corporation":false,"usgs":true,"family":"Nettleton-Hollingsworth","given":"T.","email":"","affiliations":[],"preferred":false,"id":446106,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Jorgenson, M.T.","contributorId":26889,"corporation":false,"usgs":true,"family":"Jorgenson","given":"M.T.","affiliations":[],"preferred":false,"id":446101,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Kane, E.S.","contributorId":42275,"corporation":false,"usgs":true,"family":"Kane","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":446104,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Mack, M.","contributorId":71843,"corporation":false,"usgs":true,"family":"Mack","given":"M.","affiliations":[],"preferred":false,"id":446108,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"O'Donnell, J.","contributorId":34785,"corporation":false,"usgs":true,"family":"O'Donnell","given":"J.","affiliations":[],"preferred":false,"id":446102,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Ping, C.-L.","contributorId":60843,"corporation":false,"usgs":true,"family":"Ping","given":"C.-L.","email":"","affiliations":[],"preferred":false,"id":446107,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Schuur, E.A.G.","contributorId":106679,"corporation":false,"usgs":true,"family":"Schuur","given":"E.A.G.","affiliations":[],"preferred":false,"id":446113,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Turetsky, M.R.","contributorId":107470,"corporation":false,"usgs":true,"family":"Turetsky","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":446114,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Valentine, D.W.","contributorId":97157,"corporation":false,"usgs":true,"family":"Valentine","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":446111,"contributorType":{"id":1,"text":"Authors"},"rank":15}]}}
,{"id":70035952,"text":"70035952 - 2011 - Monitoring a boreal wildfire using multi-temporal Radarsat-1 intensity and coherence images","interactions":[],"lastModifiedDate":"2017-04-06T13:35:01","indexId":"70035952","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1799,"text":"Geomatics, Natural Hazards and Risk","active":true,"publicationSubtype":{"id":10}},"title":"Monitoring a boreal wildfire using multi-temporal Radarsat-1 intensity and coherence images","docAbstract":"Twenty-five C-band Radarsat-1 synthetic aperture radar (SAR) images acquired from the summer of 2002 to the summer of 2005 are used to map a 2003 boreal wildfire (B346) in the Yukon Flats National Wildlife Refuge, Alaska under conditions of near-persistent cloud cover. Our analysis is primarily based on the 15 SAR scenes acquired during arctic growing seasons. The Radarsat-1 intensity data are used to map the onset and progression of the fire, and interferometric coherence images are used to qualify burn severity and monitor post-fire recovery. We base our analysis of the fire on three test sites, two from within the fire and one unburned site. The B346 fire increased backscattered intensity values for the two burn study sites by approximately 5–6 dB and substantially reduced coherence from background levels of approximately 0.8 in unburned background forested areas to approximately 0.2 in the burned area. Using ancillary vegetation information from the National Land Cover Database (NLCD) and information on burn severity from Normalized Burn Ratio (NBR) data, we conclude that burn site 2 was more severely burned than burn site 1 and that C-band interferometric coherence data are useful for mapping landscape changes due to fire. Differences in burn severity and topography are determined to be the likely reasons for the observed differences in post-fire intensity and coherence trends between burn sites.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/19475705.2010.532971","issn":"19475705","usgsCitation":"Rykhus, R.P., and Lu, Z., 2011, Monitoring a boreal wildfire using multi-temporal Radarsat-1 intensity and coherence images: Geomatics, Natural Hazards and Risk, v. 2, no. 1, p. 15-32, https://doi.org/10.1080/19475705.2010.532971.","productDescription":"18 p.","startPage":"15","endPage":"32","numberOfPages":"18","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":244157,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216294,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/19475705.2010.532971"}],"volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-03-14","publicationStatus":"PW","scienceBaseUri":"505a5d7fe4b0c8380cd703e3","contributors":{"authors":[{"text":"Rykhus, Russell P.","contributorId":27337,"corporation":false,"usgs":true,"family":"Rykhus","given":"Russell","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":453282,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, Zhong 0000-0001-9181-1818 lu@usgs.gov","orcid":"https://orcid.org/0000-0001-9181-1818","contributorId":901,"corporation":false,"usgs":true,"family":"Lu","given":"Zhong","email":"lu@usgs.gov","affiliations":[],"preferred":true,"id":453283,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035088,"text":"70035088 - 2011 - Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron","interactions":[],"lastModifiedDate":"2018-05-02T21:30:12","indexId":"70035088","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron","docAbstract":"Iron is an essential micronutrient that limits primary productivity in much of the ocean, including the Gulf of Alaska (GoA). However, the processes that transport iron to the ocean surface are poorly quantified. We combine satellite and meteorological data to provide the first description of widespread dust transport from coastal Alaska into the GoA. Dust is frequently transported from glacially-derived sediment at the mouths of several rivers, the most prominent of which is the Copper River. These dust events occur most frequently in autumn, when coastal river levels are low and riverbed sediments are exposed. The dust plumes are transported several hundred kilometers beyond the continental shelf into iron-limited waters. We estimate the mass of dust transported from the Copper River valley during one 2006 dust event to be between 25–80 ktons. Based on conservative estimates, this equates to a soluble iron loading of 30–200 tons. We suggest the soluble Fe flux from dust originating in glaciofluvial sediment deposits from the entire GoA coastline is two to three times larger, and is comparable to the annual Fe flux to GoA surface waters from eddies of coastal origin. Given that glaciers are retreating in the coastal GoA region and in other locations, it is important to examine whether fluxes of dust are increasing from glacierized landscapes to the ocean, and to assess the impact of associated Fe on marine ecosystems.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"AGU","doi":"10.1029/2010GL046573","issn":"00948276","usgsCitation":"Crusius, J., Schroth, A., Gasso, S., Moy, C., Levy, R., and Gatica, M., 2011, Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron: Geophysical Research Letters, v. 38, no. 6, L06602, https://doi.org/10.1029/2010GL046573.","productDescription":"L06602","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":487246,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010gl046573","text":"Publisher Index Page"},{"id":243288,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215480,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010GL046573"}],"otherGeospatial":"Gulf Of Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -170.5,47.0 ], [ -170.5,61.7 ], [ -123.6,61.7 ], [ -123.6,47.0 ], [ -170.5,47.0 ] ] ] } } ] }","volume":"38","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-03-18","publicationStatus":"PW","scienceBaseUri":"505a2901e4b0c8380cd5a5dc","contributors":{"authors":[{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":449237,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schroth, A.W.","contributorId":79707,"corporation":false,"usgs":true,"family":"Schroth","given":"A.W.","email":"","affiliations":[],"preferred":false,"id":449238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gasso, S.","contributorId":28447,"corporation":false,"usgs":true,"family":"Gasso","given":"S.","affiliations":[],"preferred":false,"id":449236,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moy, C.M.","contributorId":81328,"corporation":false,"usgs":true,"family":"Moy","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":449239,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Levy, R.C.","contributorId":11435,"corporation":false,"usgs":true,"family":"Levy","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":449234,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gatica, M.","contributorId":24191,"corporation":false,"usgs":true,"family":"Gatica","given":"M.","affiliations":[],"preferred":false,"id":449235,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70035925,"text":"70035925 - 2011 - An introduction to the practical and ethical perspectives on the need to advance and standardize the intracoelomic surgical implantation of electronic tags in fish","interactions":[],"lastModifiedDate":"2021-02-08T17:54:47.70701","indexId":"70035925","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3278,"text":"Reviews in Fish Biology and Fisheries","active":true,"publicationSubtype":{"id":10}},"title":"An introduction to the practical and ethical perspectives on the need to advance and standardize the intracoelomic surgical implantation of electronic tags in fish","docAbstract":"The intracoelomic surgical implantation of electronic tags (including radio and acoustic telemetry transmitters, passive integrated transponders and archival biologgers) is frequently used for conducting studies on fish. Electronic tagging studies provide information on the spatial ecology, behavior and survival of fish in marine and freshwater systems. However, any surgical procedure, particularly one where a laparotomy is performed and the coelomic cavity is opened, has the potential to alter the survival, behavior or condition of the animal which can impair welfare and introduce bias. Given that management, regulatory and conservation decisions are based on the assumption that fish implanted with electronic tags have similar fates and behavior relative to untagged conspecifics, it is critical to ensure that best surgical practices are being used. Also, the current lack of standardized surgical procedures and reporting of specific methodological details precludes cross-study and cross-year analyses which would further progress the field of fisheries science. This compilation of papers seeks to identify the best practices for the entire intracoelomic tagging procedure including pre- and post-operative care, anesthesia, wound closure, and use of antibiotics. Although there is a particular focus on salmonid smolts given the large body of literature available on that group, other life-stages and species of fish are discussed where there is sufficient knowledge. Additional papers explore the role of the veterinarian in fish surgeries, the need for minimal standards in the training of fish surgeons, providing a call for more complete and transparent procedures, and identifying trends in procedures and research needs. Collectively, this body of knowledge should help to improve data quality (including comparability and repeatability), enhance management and conservation strategies, and maintain the welfare status of tagged fish.
","language":"English","publisher":"Springer Link","doi":"10.1007/s11160-010-9183-5","issn":"09603166","usgsCitation":"Brown, R., Eppard, M., Murchie, K., Nielsen, J.L., and Cooke, S.J., 2011, An introduction to the practical and ethical perspectives on the need to advance and standardize the intracoelomic surgical implantation of electronic tags in fish: Reviews in Fish Biology and Fisheries, v. 21, no. 1, p. 1-9, https://doi.org/10.1007/s11160-010-9183-5.","productDescription":"9 p.","startPage":"1","endPage":"9","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":244224,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216360,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11160-010-9183-5"}],"volume":"21","issue":"1","noUsgsAuthors":false,"publicationDate":"2010-12-30","publicationStatus":"PW","scienceBaseUri":"5059ea8ce4b0c8380cd48930","contributors":{"authors":[{"text":"Brown, R.S.","contributorId":68084,"corporation":false,"usgs":true,"family":"Brown","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":453167,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eppard, M.B.","contributorId":9084,"corporation":false,"usgs":true,"family":"Eppard","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":453164,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Murchie, K.J.","contributorId":28097,"corporation":false,"usgs":true,"family":"Murchie","given":"K.J.","email":"","affiliations":[],"preferred":false,"id":453165,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nielsen, Jennifer L.","contributorId":43722,"corporation":false,"usgs":true,"family":"Nielsen","given":"Jennifer","email":"","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":453168,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cooke, S. J.","contributorId":55645,"corporation":false,"usgs":false,"family":"Cooke","given":"S.","email":"","middleInitial":"J.","affiliations":[{"id":16718,"text":"Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada","active":true,"usgs":false}],"preferred":false,"id":453166,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034035,"text":"70034035 - 2011 - Effects of simultaneous climate change and geomorphic evolution on thermal characteristics of a shallow Alaskan lake","interactions":[],"lastModifiedDate":"2017-08-31T16:05:52","indexId":"70034035","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Effects of simultaneous climate change and geomorphic evolution on thermal characteristics of a shallow Alaskan lake","docAbstract":"We used a hydrodynamics model to assess the consequences of climate warming and contemporary geomorphic evolution for thermal conditions in a large, shallow Alaskan lake. We evaluated the effects of both known climate and landscape change, including rapid outlet erosion and migration of the principal inlet stream, over the past 50 yr as well as future scenarios of geomorphic restoration. Compared to effects of air temperature during the past 50 yr, lake thermal properties showed little sensitivity to substantial (~60%) loss of lake volume, as the lake maximum depth declined from 6 m to 4 m driven by outlet erosion. The direction and magnitude of future lake thermal responses will be driven largely by the extent of inlet stream migration when it occurs simultaneously with outlet erosion. Maintaining connectivity with inlet streams had substantial effects on buffering lake thermal responses to warming climate. Failing to account for changing rates and types of geomorphic processes under continuing climate change may misidentify the primary drivers of lake thermal responses and reduce our ability to understand the consequences for aquatic organisms.
","language":"English","publisher":"ASLO","doi":"10.4319/lo.2011.56.1.0193","issn":"00243590","usgsCitation":"Griffiths, J.R., Schindler, D.E., Balistrieri, L.S., and Ruggerone, G.T., 2011, Effects of simultaneous climate change and geomorphic evolution on thermal characteristics of a shallow Alaskan lake: Limnology and Oceanography, v. 56, no. 1, p. 193-205, https://doi.org/10.4319/lo.2011.56.1.0193.","productDescription":"13 p.","startPage":"193","endPage":"205","numberOfPages":"13","ipdsId":"IP-023693","costCenters":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":475159,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4319/lo.2011.56.1.0193","text":"Publisher Index Page"},{"id":244763,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216865,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.4319/lo.2011.56.1.0193"}],"country":"United States","state":"Alaska","volume":"56","issue":"1","noUsgsAuthors":false,"publicationDate":"2010-12-24","publicationStatus":"PW","scienceBaseUri":"505a07cee4b0c8380cd51844","contributors":{"authors":[{"text":"Griffiths, Jennifer R.","contributorId":149337,"corporation":false,"usgs":false,"family":"Griffiths","given":"Jennifer","email":"","middleInitial":"R.","affiliations":[{"id":13190,"text":"School of Aquatic and Fishery Sciences, University of Washington","active":true,"usgs":false}],"preferred":false,"id":443760,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schindler, Daniel E.","contributorId":83485,"corporation":false,"usgs":true,"family":"Schindler","given":"Daniel","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":443758,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Balistrieri, Laurie S. 0000-0002-6359-3849 balistri@usgs.gov","orcid":"https://orcid.org/0000-0002-6359-3849","contributorId":1406,"corporation":false,"usgs":true,"family":"Balistrieri","given":"Laurie","email":"balistri@usgs.gov","middleInitial":"S.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":443759,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ruggerone, Gregory T.","contributorId":48068,"corporation":false,"usgs":true,"family":"Ruggerone","given":"Gregory","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":443761,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70036902,"text":"70036902 - 2011 - Geologic controls on gas hydrate occurrence in the Mount Elbert prospect, Alaska North Slope","interactions":[],"lastModifiedDate":"2020-12-17T19:51:02.165658","indexId":"70036902","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geologic controls on gas hydrate occurrence in the Mount Elbert prospect, Alaska North Slope","docAbstract":"Data acquired at the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well, drilled in the Milne Point area of the Alaska North Slope in February, 2007, indicates two zones of high gas hydrate saturation within the Eocene Sagavanirktok Formation. Gas hydrate is observed in two separate sand reservoirs (the D and C units), in the stratigraphically highest portions of those sands, and is not detected in non-sand lithologies. In the younger D unit, gas hydrate appears to fill much of the available reservoir space at the top of the unit. The degree of vertical fill with the D unit is closely related to the unit reservoir quality. A thick, low-permeability clay-dominated unit serves as an upper seal, whereas a subtle transition to more clay-rich, and interbedded sand, silt, and clay units is associated with the base of gas hydrate occurrence. In the underlying C unit, the reservoir is similarly capped by a clay-dominated section, with gas hydrate filling the relatively lower-quality sands at the top of the unit leaving an underlying thick section of high-reservoir quality sands devoid of gas hydrate. Evaluation of well log, core, and seismic data indicate that the gas hydrate occurs within complex combination stratigraphic/structural traps. Structural trapping is provided by a four-way fold closure augmented by a large western bounding fault. Lithologic variation is also a likely strong control on lateral extent of the reservoirs, particularly in the D unit accumulation, where gas hydrate appears to extend beyond the limits of the structural closure. Porous and permeable zones within the C unit sand are only partially charged due most likely to limited structural trapping in the reservoir lithofacies during the period of primary charging. The occurrence of the gas hydrate within the sands in the upper portions of both the C and D units and along the crest of the fold is consistent with an interpretation that these deposits are converted free gas accumulations formed prior to the imposition of gas hydrate stability conditions.
","largerWorkTitle":"Marine and Petroleum Geology","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2009.12.004","issn":"02648172","usgsCitation":"Boswell, R., Rose, K., Collett, T.S., Lee, M.W., Winters, W.J., Lewis, K.A., and Agena, W.F., 2011, Geologic controls on gas hydrate occurrence in the Mount Elbert prospect, Alaska North Slope: Marine and Petroleum Geology, v. 28, no. 2, p. 589-607, https://doi.org/10.1016/j.marpetgeo.2009.12.004.","productDescription":"19 p.","startPage":"589","endPage":"607","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":475172,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/4387","text":"External Repository"},{"id":245863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217890,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2009.12.004"}],"country":"United States","state":"Alaska","otherGeospatial":"The Mount Elbert well","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -161.3671875,\n 70.28911664330674\n ],\n [\n -159.169921875,\n 68.65655498475735\n ],\n [\n -154.775390625,\n 67.60922060496382\n ],\n [\n -140.44921875,\n 68.26938680456564\n ],\n [\n -139.921875,\n 70.11048478105927\n ],\n [\n -153.28125,\n 72.58082870324515\n ],\n [\n -159.609375,\n 71.88357830131248\n ],\n [\n -161.3671875,\n 70.28911664330674\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1943e4b0c8380cd55922","contributors":{"authors":[{"text":"Boswell, R.","contributorId":35121,"corporation":false,"usgs":true,"family":"Boswell","given":"R.","affiliations":[],"preferred":false,"id":458406,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rose, K.","contributorId":43594,"corporation":false,"usgs":true,"family":"Rose","given":"K.","email":"","affiliations":[],"preferred":false,"id":458407,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":458409,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lee, Myung W. mlee@usgs.gov","contributorId":779,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","email":"mlee@usgs.gov","middleInitial":"W.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":458405,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Winters, William J. bwinters@usgs.gov","contributorId":522,"corporation":false,"usgs":true,"family":"Winters","given":"William","email":"bwinters@usgs.gov","middleInitial":"J.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":458410,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lewis, Kristen A. 0000-0003-4991-3399 klewis@usgs.gov","orcid":"https://orcid.org/0000-0003-4991-3399","contributorId":4120,"corporation":false,"usgs":true,"family":"Lewis","given":"Kristen","email":"klewis@usgs.gov","middleInitial":"A.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":458411,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Agena, Warren F. wagena@usgs.gov","contributorId":3181,"corporation":false,"usgs":true,"family":"Agena","given":"Warren","email":"wagena@usgs.gov","middleInitial":"F.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":458408,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70036903,"text":"70036903 - 2011 - In-situ gas hydrate hydrate saturation estimated from various well logs at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","interactions":[],"lastModifiedDate":"2020-12-17T19:30:54.671568","indexId":"70036903","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"In-situ gas hydrate hydrate saturation estimated from various well logs at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","docAbstract":"In 2006, the U.S. Geological Survey (USGS) completed detailed analysis and interpretation of available 2-D and 3-D seismic data and proposed a viable method for identifying sub-permafrost gas hydrate prospects within the gas hydrate stability zone in the Milne Point area of northern Alaska. To validate the predictions of the USGS and to acquire critical reservoir data needed to develop a long-term production testing program, a well was drilled at the Mount Elbert prospect in February, 2007. Numerous well log data and cores were acquired to estimate in-situ gas hydrate saturations and reservoir properties.
Gas hydrate saturations were estimated from various well logs such as nuclear magnetic resonance (NMR), P- and S-wave velocity, and electrical resistivity logs along with pore-water salinity. Gas hydrate saturations from the NMR log agree well with those estimated from P- and S-wave velocity data. Because of the low salinity of the connate water and the low formation temperature, the resistivity of connate water is comparable to that of shale. Therefore, the effect of clay should be accounted for to accurately estimate gas hydrate saturations from the resistivity data. Two highly gas hydrate-saturated intervals are identified – an upper ∼43 ft zone with an average gas hydrate saturation of 54% and a lower ∼53 ft zone with an average gas hydrate saturation of 50%; both zones reach a maximum of about 75% saturation.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine and Petroleum Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.marpetgeo.2009.06.007","issn":"02648172","usgsCitation":"Lee, M.W., and Collett, T.S., 2011, In-situ gas hydrate hydrate saturation estimated from various well logs at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Marine and Petroleum Geology, v. 28, no. 2, p. 439-449, https://doi.org/10.1016/j.marpetgeo.2009.06.007.","productDescription":"11 p.","startPage":"439","endPage":"449","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":245864,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217891,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2009.06.007"}],"country":"United States","state":"Alaska","otherGeospatial":"Mount Elbert Gas Hydrate Stratigraphic Test Well","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -161.3671875,\n 70.28911664330674\n ],\n [\n -159.169921875,\n 68.65655498475735\n ],\n [\n -154.775390625,\n 67.60922060496382\n ],\n [\n -140.44921875,\n 68.26938680456564\n ],\n [\n -139.921875,\n 70.11048478105927\n ],\n [\n -153.28125,\n 72.58082870324515\n ],\n [\n -159.609375,\n 71.88357830131248\n ],\n [\n -161.3671875,\n 70.28911664330674\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a39c2e4b0c8380cd61a2d","contributors":{"authors":[{"text":"Lee, Myung W. mlee@usgs.gov","contributorId":779,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","email":"mlee@usgs.gov","middleInitial":"W.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":458412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":458413,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033926,"text":"70033926 - 2011 - An isotopic approach to measuring nitrogen balance in caribou","interactions":[],"lastModifiedDate":"2018-04-04T10:09:41","indexId":"70033926","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"An isotopic approach to measuring nitrogen balance in caribou","docAbstract":"Nutritional restrictions in winter may reduce the availability of protein for reproduction and survival in northern ungulates. We refined a technique that uses recently voided excreta on snow to assess protein status in wild caribou (Rangifer tarandus) in late winter. Our study was the first application of this non‐invasive, isotopic approach to assess protein status of wild caribou by determining dietary and endogenous contributions of nitrogen (N) to urinary urea. We used isotopic ratios of N (δ15N) in urine and fecal samples to estimate the proportion of urea N derived from body N (p‐UN) in pregnant, adult females of the Chisana Herd, a small population that ranged across the Alaska‐Yukon border. We took advantage of a predator‐exclosure project to examine N status of penned caribou in April 2006. Lichens were the primary forage (>40%) consumed by caribou in the pen and δ15N of fiber tracked the major forages in their diets. The δ15N of urinary urea for females in the pen was depleted relative (−1.3 ± 1.0 parts per thousand [‰], ${\\bar {x}}\\pm {\\rm SD}$![\"equation](\"https://wol-prod-cdn.literatumonline.com/cms/attachment/d5d1dd94-19f5-40b1-a46e-e9f89649c2d4/tex2gif-ueqn-1.gif\")
) to the δ15N of body N (2.7 ± 0.7‰). A similar proportion of animals in the exclosure lost core body mass (excluding estimates of fetal and uterine tissues; 55%) and body protein (estimated by isotope ratios; 54%). This non‐invasive technique could be applied at various spatial and temporal scales to assess trends in protein status of free‐ranging populations of northern ungulates. Intra‐ and inter‐annual estimates of protein status could help managers monitor effects of foraging conditions on nutritional constraints in ungulates, increase the efficiency and efficacy of management actions, and help prepare stakeholders for potential changes in population trends.
","language":"English","publisher":"Wiley","doi":"10.1002/jwmg.11","usgsCitation":"Gustine, D.D., Barboza, P.S., Adams, L., Farnell, R.G., and Parker, K.L., 2011, An isotopic approach to measuring nitrogen balance in caribou: Journal of Wildlife Management, v. 75, no. 1, p. 178-188, https://doi.org/10.1002/jwmg.11.","productDescription":"11 p.","startPage":"178","endPage":"188","ipdsId":"IP-015292","costCenters":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"links":[{"id":241973,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-01-31","publicationStatus":"PW","scienceBaseUri":"5059ea94e4b0c8380cd4895f","contributors":{"authors":[{"text":"Gustine, David D. dgustine@usgs.gov","contributorId":3776,"corporation":false,"usgs":true,"family":"Gustine","given":"David","email":"dgustine@usgs.gov","middleInitial":"D.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":443212,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barboza, Perry S.","contributorId":36454,"corporation":false,"usgs":false,"family":"Barboza","given":"Perry","email":"","middleInitial":"S.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":443210,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, Layne G. 0000-0001-6212-2896 ladams@usgs.gov","orcid":"https://orcid.org/0000-0001-6212-2896","contributorId":2776,"corporation":false,"usgs":true,"family":"Adams","given":"Layne G.","email":"ladams@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":443213,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Farnell, Richard G.","contributorId":56870,"corporation":false,"usgs":false,"family":"Farnell","given":"Richard","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":443211,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Parker, Katherine L.","contributorId":203784,"corporation":false,"usgs":false,"family":"Parker","given":"Katherine","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":443214,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033854,"text":"70033854 - 2011 - Polar bear population status in the northern Beaufort Sea, Canada, 1971-2006","interactions":[],"lastModifiedDate":"2016-06-02T12:54:58","indexId":"70033854","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Polar bear population status in the northern Beaufort Sea, Canada, 1971-2006","docAbstract":"Polar bears (Ursus maritimus) of the northern Beaufort Sea (NB) population occur on the perimeter of the polar basin adjacent to the northwestern islands of the Canadian Arctic Archipelago. Sea ice converges on the islands through most of the year. We used open-population capture–recapture models to estimate population size and vital rates of polar bears between 1971 and 2006 to: (1) assess relationships between survival, sex and age, and time period; (2) evaluate the long-term importance of sea ice quality and availability in relation to climate warming; and (3) note future management and conservation concerns. The highest-ranking models suggested that survival of polar bears varied by age class and with changes in the sea ice habitat. Model-averaged estimates of survival (which include harvest mortality) for senescent adults ranged from 0.37 to 0.62, from 0.22 to 0.68 for cubs of the year (COY) and yearlings, and from 0.77 to 0.92 for 2–4 year-olds and adults. Horvtiz-Thompson (HT) estimates of population size were not significantly different among the decades of our study. The population size estimated for the 2000s was 980 ± 155 (mean and 95% CI). These estimates apply primarily to that segment of the NB population residing west and south of Banks Island. The NB polar bear population appears to have been stable or possibly increasing slightly during the period of our study. This suggests that ice conditions have remained suitable and similar for feeding in summer and fall during most years and that the traditional and legal Inuvialuit harvest has not exceeded sustainable levels. However, the amount of ice remaining in the study area at the end of summer, and the proportion that continues to lie over the biologically productive continental shelf (<300 m water depth) has declined over the 35-year period of this study. If the climate continues to warm as predicted, we predict that the polar bear population in the northern Beaufort Sea will eventually decline. Management and conservation practices for polar bears in relation to both aboriginal harvesting and offshore industrial activity will need to adapt.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/10-0849.1","issn":"10510761","usgsCitation":"Stirling, I., McDonald, T.L., Richardson, E., Regehr, E., and Amstrup, S.C., 2011, Polar bear population status in the northern Beaufort Sea, Canada, 1971-2006: Ecological Applications, v. 21, no. 3, p. 859-876, https://doi.org/10.1890/10-0849.1.","productDescription":"18 p.","startPage":"859","endPage":"876","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":241844,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214150,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/10-0849.1"}],"volume":"21","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7cc1e4b0c8380cd79b76","contributors":{"authors":[{"text":"Stirling, I.","contributorId":103615,"corporation":false,"usgs":false,"family":"Stirling","given":"I.","email":"","affiliations":[],"preferred":false,"id":442849,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDonald, T. L.","contributorId":101211,"corporation":false,"usgs":false,"family":"McDonald","given":"T.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":442848,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Richardson, E.S.","contributorId":47991,"corporation":false,"usgs":true,"family":"Richardson","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":442845,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Regehr, E.V.","contributorId":90937,"corporation":false,"usgs":true,"family":"Regehr","given":"E.V.","affiliations":[],"preferred":false,"id":442847,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Amstrup, Steven C.","contributorId":67034,"corporation":false,"usgs":false,"family":"Amstrup","given":"Steven","email":"","middleInitial":"C.","affiliations":[{"id":13182,"text":"Polar Bears International","active":true,"usgs":false}],"preferred":false,"id":442846,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033852,"text":"70033852 - 2011 - Developing effective sampling designs for monitoring natural resources in Alaskan national parks: an example using simulations and vegetation data","interactions":[],"lastModifiedDate":"2013-11-06T14:53:45","indexId":"70033852","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Developing effective sampling designs for monitoring natural resources in Alaskan national parks: an example using simulations and vegetation data","docAbstract":"Monitoring natural resources in Alaskan national parks is challenging because of their remoteness, limited accessibility, and high sampling costs. We describe an iterative, three-phased process for developing sampling designs based on our efforts to establish a vegetation monitoring program in southwest Alaska. In the first phase, we defined a sampling frame based on land ownership and specific vegetated habitats within the park boundaries and used Path Distance analysis tools to create a GIS layer that delineated portions of each park that could be feasibly accessed for ground sampling. In the second phase, we used simulations based on landcover maps to identify size and configuration of the ground sampling units (single plots or grids of plots) and to refine areas to be potentially sampled. In the third phase, we used a second set of simulations to estimate sample size and sampling frequency required to have a reasonable chance of detecting a minimum trend in vegetation cover for a specified time period and level of statistical confidence. Results of the first set of simulations indicated that a spatially balanced random sample of single plots from the most common landcover types yielded the most efficient sampling scheme. Results of the second set of simulations were compared with field data and indicated that we should be able to detect at least a 25% change in vegetation attributes over 31. years by sampling 8 or more plots per year every five years in focal landcover types. This approach would be especially useful in situations where ground sampling is restricted by access.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.biocon.2010.09.032","issn":"00063207","usgsCitation":"Thompson, W.L., Miller, A.E., Mortenson, D.C., and Woodward, A., 2011, Developing effective sampling designs for monitoring natural resources in Alaskan national parks: an example using simulations and vegetation data: Biological Conservation, v. 144, no. 5, p. 1270-1277, https://doi.org/10.1016/j.biocon.2010.09.032.","productDescription":"8 p.","startPage":"1270","endPage":"1277","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":214116,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2010.09.032"},{"id":241808,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Alagnak Wild River;Aniakchak National Monument And Preserve;Katmai National Park And Preserve;Kenai Fjords National Park;Lake Clark National Park And Preserve;Southwest Alaska Network","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -162.93,56.49 ], [ -162.93,62.09 ], [ -145.44,62.09 ], [ -145.44,56.49 ], [ -162.93,56.49 ] ] ] } } ] }","volume":"144","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a000fe4b0c8380cd4f579","contributors":{"authors":[{"text":"Thompson, William L.","contributorId":6269,"corporation":false,"usgs":true,"family":"Thompson","given":"William","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":442837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Amy E.","contributorId":101468,"corporation":false,"usgs":true,"family":"Miller","given":"Amy","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":442839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mortenson, Dorothy C.","contributorId":66075,"corporation":false,"usgs":true,"family":"Mortenson","given":"Dorothy","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":442838,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Woodward, Andrea 0000-0003-0604-9115 awoodward@usgs.gov","orcid":"https://orcid.org/0000-0003-0604-9115","contributorId":3028,"corporation":false,"usgs":true,"family":"Woodward","given":"Andrea","email":"awoodward@usgs.gov","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":442836,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034338,"text":"70034338 - 2011 - Variations in eruption style during the 1931A.D. eruption of Aniakchak volcano, Alaska","interactions":[],"lastModifiedDate":"2021-04-22T16:02:29.188479","indexId":"70034338","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Variations in eruption style during the 1931A.D. eruption of Aniakchak volcano, Alaska","docAbstract":"The 1931 A.D. eruption of Aniakchak volcano, Alaska, progressed from subplinian to effusive eruptive style and from trachydacite to basaltic andesite composition from multiple vent locations. Eyewitness accounts and new studies of deposit stratigraphy provide a combined narrative of eruptive events. Additional field, compositional, grain size, componentry, density, and grain morphology data document the influences on changing eruptive style as the eruption progressed. The eruption began on 1 May 1931 A.D. when a large subplinian eruption column produced vesicular juvenile-rich tephra. Subsequent activity was more intermittent, as magma interacted with groundwater and phreatomagmatic ash and lithic-rich tephra was dispersed up to 600 km downwind. Final erupted products were more mafic in composition and the eruption became more strombolian in style. Stratigraphic evidence suggests that two trachydacitic lava flows were erupted from separate but adjacent vents before the phreatomagmatic phase concluded and that basaltic andesite lava from a third vent began to effuse near the end of explosive activity. The estimated total bulk volume of the eruption is 0.9 km3, which corresponds to approximately 0.3 km3 of magma. Eruption style changes are interpreted as follows: (1) a decrease in magma supply rate caused the change from subplinian to phreatomagmatic eruption; (2) a subsequent change in magma composition caused the transition from phreatomagmatic to strombolian eruption style. Additionally, the explosion and effusion of a similar magma composition from three separate vents indicates how the pre-existing caldera structure controlled the pathway of shallow magma ascent, thus influencing eruption style.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jvolgeores.2011.08.002","issn":"03770273","usgsCitation":"Nicholson, R., Gardner, J., and Neal, C., 2011, Variations in eruption style during the 1931A.D. eruption of Aniakchak volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 207, no. 3-4, p. 69-82, https://doi.org/10.1016/j.jvolgeores.2011.08.002.","productDescription":"14 p.","startPage":"69","endPage":"82","costCenters":[],"links":[{"id":244436,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216558,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jvolgeores.2011.08.002"}],"country":"United States","state":"Alaska","otherGeospatial":"Aniakchak Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -160.6201171875,\n 55.97379820507658\n ],\n [\n -155.302734375,\n 55.97379820507658\n ],\n [\n -155.302734375,\n 57.72761921621492\n ],\n [\n -160.6201171875,\n 57.72761921621492\n ],\n [\n -160.6201171875,\n 55.97379820507658\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"207","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc17ce4b08c986b32a5ca","contributors":{"authors":[{"text":"Nicholson, R.S.","contributorId":67125,"corporation":false,"usgs":true,"family":"Nicholson","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":445304,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gardner, J.E.","contributorId":7456,"corporation":false,"usgs":true,"family":"Gardner","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":445303,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neal, C.A. 0000-0002-7697-7825","orcid":"https://orcid.org/0000-0002-7697-7825","contributorId":91122,"corporation":false,"usgs":true,"family":"Neal","given":"C.A.","affiliations":[],"preferred":false,"id":445305,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034389,"text":"70034389 - 2011 - Short-term survival and effects of transmitter implantation into western grebes using a modified surgical procedure","interactions":[],"lastModifiedDate":"2014-05-13T11:44:10","indexId":"70034389","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2514,"text":"Journal of Zoo and Wildlife Medicine","active":true,"publicationSubtype":{"id":10}},"title":"Short-term survival and effects of transmitter implantation into western grebes using a modified surgical procedure","docAbstract":"Two pilot trials and one study in a closely related grebe species suggest that Western grebes (Aechmophorus occidentalis) will not tolerate intracoelomic transmitter implantation with percutaneous antennae and often die within days of surgery. Wild Western grebes (n = 21) were captured to evaluate a modified surgical technique. Seven birds were surgically implanted with intracoelomic transmitters with percutaneous antennae by using the modified technique (transmitter group), 7 received the same surgery without transmitter implantation (celiotomy group), and 7 served as controls (only undergoing anesthesia). Modifications included laterally offsetting the body wall incision from the skin incision, application of absorbable cyanoacrylate tissue glue to the subcutaneous space between the body wall and skin incisions, application of a waterproof sealant to the skin incision after suture closure, and application of a piece of porcine small intestine submucosa to the antenna egress. Survival did not differ among the 3 groups with 7 of 7 control, 6 of 7 celiotomy, and 6 of 7 transmitter birds surviving the 9-day study. Experimental birds were euthanized at the end of the study, and postmortem findings indicated normal healing. Significant differences in plasma chemistry or immune function were not detected among the 3 groups, and only minor differences were detected in red blood cell indices and plasma proteins. After surgery, the birds in the transmitter group spent more time preening tail feathers than those in the control and celiotomy groups. These results demonstrate that, in a captive situation, celiotomy and intracoelomic transmitter implantation caused minimal detectable homeostatic disturbance in this species and that Western grebes can survive implantation of intracoelomic transmitters with percutaneous antennae. It remains to be determined what potential this modified surgical procedure has to improve postoperative survival of Western grebes that are intracelomically implanted with transmitters with percutaneous antennae and released into the wild.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Zoo and Wildlife Medicine","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Association of Zoo Veterinarians","doi":"10.1638/2010-0233.1","issn":"10427260","usgsCitation":"Gaydos, J.K., Massey, J.G., Mulcahy, D.M., Gaskins, L.A., Nysewander, D., Evenson, J., Siegel, P.B., and Ziccardi, M.H., 2011, Short-term survival and effects of transmitter implantation into western grebes using a modified surgical procedure: Journal of Zoo and Wildlife Medicine, v. 42, no. 3, p. 414-425, https://doi.org/10.1638/2010-0233.1.","productDescription":"12 p.","startPage":"414","endPage":"425","numberOfPages":"12","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":244724,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216829,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1638/2010-0233.1"}],"volume":"42","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8ec7e4b08c986b318b3c","contributors":{"authors":[{"text":"Gaydos, Joseph K.","contributorId":28456,"corporation":false,"usgs":true,"family":"Gaydos","given":"Joseph","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":445560,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Massey, J. Gregory","contributorId":101054,"corporation":false,"usgs":true,"family":"Massey","given":"J.","email":"","middleInitial":"Gregory","affiliations":[],"preferred":false,"id":445563,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mulcahy, Daniel M. dmulcahy@usgs.gov","contributorId":3102,"corporation":false,"usgs":true,"family":"Mulcahy","given":"Daniel","email":"dmulcahy@usgs.gov","middleInitial":"M.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":445556,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gaskins, Lori A.","contributorId":6288,"corporation":false,"usgs":true,"family":"Gaskins","given":"Lori","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":445557,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nysewander, David","contributorId":57298,"corporation":false,"usgs":true,"family":"Nysewander","given":"David","affiliations":[],"preferred":false,"id":445562,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Evenson, Joseph","contributorId":19809,"corporation":false,"usgs":true,"family":"Evenson","given":"Joseph","affiliations":[],"preferred":false,"id":445559,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Siegel, Paul B.","contributorId":44763,"corporation":false,"usgs":true,"family":"Siegel","given":"Paul","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":445561,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ziccardi, Michael H.","contributorId":16677,"corporation":false,"usgs":true,"family":"Ziccardi","given":"Michael","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":445558,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70036537,"text":"70036537 - 2011 - Spatial variations in focused exhumation along a continental-scale strike-slip fault: The Denali fault of the eastern Alaska Range","interactions":[],"lastModifiedDate":"2018-05-20T12:54:19","indexId":"70036537","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Spatial variations in focused exhumation along a continental-scale strike-slip fault: The Denali fault of the eastern Alaska Range","docAbstract":"40Ar/39Ar, apatite fission-track, and apatite (U-Th)/He thermochronological techniques were used to determine the Neogene exhumation history of the topographically asymmetric eastern Alaska Range. Exhumation cooling ages range from ~33 Ma to ~18 Ma for 40Ar/39Ar biotite, ~18 Ma to ~6 Ma for K-feldspar minimum closure ages, and ~15 Ma to ~1 Ma for apatite fission-track ages, and apatite (U-Th)/He cooling ages range from ~4 Ma to ~1 Ma. There has been at least ~11 km of exhumation adjacent to the north side of Denali fault during the Neogene inferred from biotite 40Ar/39Ar thermochronology. Variations in exhumation history along and across the strike of the fault are influenced by both far-field effects and local structural irregularities. We infer deformation and rapid exhumation have been occurring in the eastern Alaska Range since at least ~22 Ma most likely related to the continued collision of the Yakutat microplate with the North American plate. The Nenana Mountain region is the late Pleistocene to Holocene (~past 1 Ma) primary locus of tectonically driven exhumation in the eastern Alaska Range, possibly related to variations in fault geometry. During the Pliocene, a marked increase in climatic instability and related global cooling is temporally correlated with an increase in exhumation rates in the eastern Alaska Range north of the Denali fault system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geosphere","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/GES00589.1","issn":"1553040X","usgsCitation":"Benowitz, J., Layer, P., Armstrong, P., Perry, S., Haeussler, P.J., Fitzgerald, P., and VanLaningham, S., 2011, Spatial variations in focused exhumation along a continental-scale strike-slip fault: The Denali fault of the eastern Alaska Range: Geosphere, v. 7, no. 2, p. 455-467, https://doi.org/10.1130/GES00589.1.","startPage":"455","endPage":"467","numberOfPages":"13","costCenters":[],"links":[{"id":475283,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00589.1","text":"Publisher Index Page"},{"id":245872,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217899,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/GES00589.1"}],"volume":"7","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b94bfe4b08c986b31ac22","contributors":{"authors":[{"text":"Benowitz, J.A.","contributorId":81729,"corporation":false,"usgs":true,"family":"Benowitz","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":456605,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Layer, P.W.","contributorId":42398,"corporation":false,"usgs":true,"family":"Layer","given":"P.W.","email":"","affiliations":[],"preferred":false,"id":456602,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Armstrong, P.","contributorId":96932,"corporation":false,"usgs":true,"family":"Armstrong","given":"P.","email":"","affiliations":[],"preferred":false,"id":456606,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Perry, S.E.","contributorId":74229,"corporation":false,"usgs":true,"family":"Perry","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":456603,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Haeussler, Peter J. 0000-0002-1503-6247 pheuslr@usgs.gov","orcid":"https://orcid.org/0000-0002-1503-6247","contributorId":503,"corporation":false,"usgs":true,"family":"Haeussler","given":"Peter","email":"pheuslr@usgs.gov","middleInitial":"J.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":456604,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fitzgerald, P.G.","contributorId":18579,"corporation":false,"usgs":true,"family":"Fitzgerald","given":"P.G.","email":"","affiliations":[],"preferred":false,"id":456600,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"VanLaningham, S.","contributorId":30077,"corporation":false,"usgs":true,"family":"VanLaningham","given":"S.","affiliations":[],"preferred":false,"id":456601,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
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