{"pageNumber":"2069","pageRowStart":"51700","pageSize":"25","recordCount":184743,"records":[{"id":70032524,"text":"70032524 - 2009 - Shallow water processes govern system-wide phytoplankton bloom dynamics: A modeling study","interactions":[],"lastModifiedDate":"2018-10-08T09:05:19","indexId":"70032524","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2381,"text":"Journal of Marine Systems","active":true,"publicationSubtype":{"id":10}},"title":"Shallow water processes govern system-wide phytoplankton bloom dynamics: A modeling study","docAbstract":"<p><span>A pseudo-two-dimensional numerical model of estuarine phytoplankton growth and consumption, vertical turbulent mixing, and idealized cross-estuary transport was developed and applied to South San Francisco Bay. This estuary has two bathymetrically distinct habitat types (deep channel, shallow shoal) and associated differences in local net rates of phytoplankton growth and consumption, as well as differences in the water column's tendency to stratify. Because many physical and biological time scales relevant to algal population dynamics decrease with decreasing depth, process rates can be especially fast in the shallow water. We used the model to explore the potential significance of hydrodynamic connectivity between a channel and shoal and whether lateral transport can allow physical or biological processes (e.g. stratification, benthic grazing, light attenuation) in one sub-region to control phytoplankton biomass and bloom development in the adjacent sub-region. Model results for South San Francisco Bay suggest that lateral transport from a productive shoal can result in phytoplankton biomass accumulation in an adjacent deep, unproductive channel. The model further suggests that turbidity and benthic grazing in the shoal can control the occurrence of a bloom system-wide; whereas, turbidity, benthic grazing, and vertical density stratification in the channel are likely to only control local bloom occurrence or modify system-wide bloom magnitude. Measurements from a related field program are generally consistent with model-derived conclusions.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jmarsys.2008.07.011","issn":"09247","usgsCitation":"Lucas, L., Koseff, J.R., Monismith, S., and Thompson, J., 2009, Shallow water processes govern system-wide phytoplankton bloom dynamics: A modeling study: Journal of Marine Systems, v. 75, no. 1-2, p. 70-86, https://doi.org/10.1016/j.jmarsys.2008.07.011.","productDescription":"17 p.","startPage":"70","endPage":"86","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241516,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213853,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jmarsys.2008.07.011"}],"volume":"75","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e46e4b08c986b318834","contributors":{"authors":[{"text":"Lucas, L.V.","contributorId":62777,"corporation":false,"usgs":true,"family":"Lucas","given":"L.V.","email":"","affiliations":[],"preferred":false,"id":436634,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koseff, Jeffrey R.","contributorId":37915,"corporation":false,"usgs":false,"family":"Koseff","given":"Jeffrey","email":"","middleInitial":"R.","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":436632,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Monismith, Stephen G.","contributorId":57228,"corporation":false,"usgs":true,"family":"Monismith","given":"Stephen G.","affiliations":[],"preferred":false,"id":436633,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thompson, J.K.","contributorId":103300,"corporation":false,"usgs":true,"family":"Thompson","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":436635,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033865,"text":"70033865 - 2009 - Habitat occupancy and detection of the pacific sheath-tailed bat (emballonura semicaudata) on aguiguan, commonwealth of the northern Mariana Islands","interactions":[],"lastModifiedDate":"2012-03-12T17:21:32","indexId":"70033865","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":629,"text":"Acta Chiropterologica","active":true,"publicationSubtype":{"id":10}},"title":"Habitat occupancy and detection of the pacific sheath-tailed bat (emballonura semicaudata) on aguiguan, commonwealth of the northern Mariana Islands","docAbstract":"Occupancy analysis was used to quantify Pacific sheath-tailed bat (Emballonura semicaudata) foraging activity and its relationship to forest structure and proximity to cave roosts on Aguiguan Island in the Commonwealth of the Northern Mariana Islands. Bat occurrence was most closely associated with canopy cover, vegetation stature and distance to known roosts. The metrics generated by this study can serve as a quantitative baseline for future assessments of the status of this endangered species following changes in habitat due to management activities (e.g., feral goat control) or other factors (e.g., typhoon impacts). Additionally, we provide quantitative descriptions of the echolocation calls of E. semicaudata. Search-phase calls were characterized by a relatively narrow bandwidth and short pulse duration typical of insectivores that forage within vegetative clutter. Two distinctly characteristic frequencies were recorded: 30.97 ?? 1.08 kHz and 63.15 ?? 2.20 kHz ?? Museum and Institute of Zoology PAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Acta Chiropterologica","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3161/150811009X485567","issn":"15081109","usgsCitation":"Gorresen, P.M., Bonaccorso, F., and Pinzari, C., 2009, Habitat occupancy and detection of the pacific sheath-tailed bat (emballonura semicaudata) on aguiguan, commonwealth of the northern Mariana Islands: Acta Chiropterologica, v. 11, no. 2, p. 331-342, https://doi.org/10.3161/150811009X485567.","startPage":"331","endPage":"342","numberOfPages":"12","costCenters":[],"links":[{"id":242040,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214323,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3161/150811009X485567"}],"volume":"11","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f17e4b0c8380cd5ca9f","contributors":{"authors":[{"text":"Gorresen, P. M. mgorresen@usgs.gov","contributorId":18552,"corporation":false,"usgs":true,"family":"Gorresen","given":"P.","email":"mgorresen@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":false,"id":442900,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonaccorso, F.J.","contributorId":13041,"corporation":false,"usgs":true,"family":"Bonaccorso","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":442899,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pinzari, C.A.","contributorId":59258,"corporation":false,"usgs":true,"family":"Pinzari","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":442901,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032872,"text":"70032872 - 2009 - Integrated treatment process using a natural Wyoming clinoptilolite for remediating produced waters from coalbed natural gas operations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:20","indexId":"70032872","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":828,"text":"Applied Clay Science","active":true,"publicationSubtype":{"id":10}},"title":"Integrated treatment process using a natural Wyoming clinoptilolite for remediating produced waters from coalbed natural gas operations","docAbstract":"Coalbed natural gas (CBNG) development in western U.S. states has resulted in an increase in an essential energy resource, but has also resulted in environmental impacts and additional regulatory needs. A concern associated with CBNG development relates to the production of the copious quantities of potentially saline-sodic groundwater required to recover the natural gas, hereafter referred to as CBNG water. Management of CBNG water is a major environmental challenge because of its quantity and quality. In this study, a locally available Na-rich natural zeolite (clinoptilolite) from Wyoming (WY) was examined for its potential to treat CBNG water to remove Na+ and lower the sodium adsorption ratio (SAR, mmol1/2 L- 1/2). The zeolite material was Ca-modified before being used in column experiments. Column breakthrough studies indicated that a metric tonne (1000??kg) of Ca-WY-zeolite could be used to treat 60,000??L of CBNG water in order to lower SAR of the CBNG water from 30 to an acceptable level of 10??mmol1/2 L- 1/2. An integrated treatment process using Na-WY-zeolite for alternately treating hard water and CBNG water was also examined for its potential to treat problematic waters in the region. Based on the results of this study, use of WY-zeolite appears to be a cost-effective water treatment technology for maximizing the beneficial use of poor-quality CBNG water. Ongoing studies are evaluating water treatment techniques involving infiltration ponds lined with zeolite. ?? 2008 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Clay Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.clay.2008.03.007","issn":"01691","usgsCitation":"Zhao, H., Vance, G., Urynowicz, M., and Gregory, R., 2009, Integrated treatment process using a natural Wyoming clinoptilolite for remediating produced waters from coalbed natural gas operations: Applied Clay Science, v. 42, no. 3-4, p. 379-385, https://doi.org/10.1016/j.clay.2008.03.007.","startPage":"379","endPage":"385","numberOfPages":"7","costCenters":[],"links":[{"id":213904,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.clay.2008.03.007"},{"id":241574,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"42","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3c6ee4b0c8380cd62d1f","contributors":{"authors":[{"text":"Zhao, H.","contributorId":82931,"corporation":false,"usgs":true,"family":"Zhao","given":"H.","email":"","affiliations":[],"preferred":false,"id":438318,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vance, G.F.","contributorId":95915,"corporation":false,"usgs":true,"family":"Vance","given":"G.F.","email":"","affiliations":[],"preferred":false,"id":438319,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Urynowicz, M.A.","contributorId":62419,"corporation":false,"usgs":true,"family":"Urynowicz","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":438317,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gregory, R.W.","contributorId":105543,"corporation":false,"usgs":true,"family":"Gregory","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":438320,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033841,"text":"70033841 - 2009 - Providing public standardized data access function: Lessons learned from accessing USGS Landsat archive","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033841","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Providing public standardized data access function: Lessons learned from accessing USGS Landsat archive","docAbstract":"The geospatial community is experiencing a shift from having data locally to sharing them over the Web. However, not all the data accessing systems are built in compliance with open geospatial standards and thus are weak in terms of interoperability. The USGS Landsat data are now available through free electronic access though not yet through standard Web service interfaces. This paper intends to discuss the experience and lessons learned from integrating a public data access function to the USGS Landsat data archive into a geospatial workflow environment. Currently available systems and their problems, proposed solutions and application scenarios are discussed.","largerWorkTitle":"2009 17th International Conference on Geoinformatics, Geoinformatics 2009","conferenceTitle":"2009 17th International Conference on Geoinformatics, Geoinformatics 2009","conferenceDate":"12 August 2009 through 14 August 2009","conferenceLocation":"Fairfax, VA","language":"English","doi":"10.1109/GEOINFORMATICS.2009.5293043","isbn":"9781424445639","usgsCitation":"Cheng, X., Bai, Y., Di, L., and Nebert, D., 2009, Providing public standardized data access function: Lessons learned from accessing USGS Landsat archive, <i>in</i> 2009 17th International Conference on Geoinformatics, Geoinformatics 2009, Fairfax, VA, 12 August 2009 through 14 August 2009, https://doi.org/10.1109/GEOINFORMATICS.2009.5293043.","costCenters":[],"links":[{"id":214443,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/GEOINFORMATICS.2009.5293043"},{"id":242171,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8faae4b0c8380cd7f8bb","contributors":{"authors":[{"text":"Cheng, X.","contributorId":23027,"corporation":false,"usgs":true,"family":"Cheng","given":"X.","email":"","affiliations":[],"preferred":false,"id":442792,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bai, Y.","contributorId":42784,"corporation":false,"usgs":true,"family":"Bai","given":"Y.","email":"","affiliations":[],"preferred":false,"id":442793,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Di, L.","contributorId":64524,"corporation":false,"usgs":true,"family":"Di","given":"L.","email":"","affiliations":[],"preferred":false,"id":442794,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nebert, D.","contributorId":93783,"corporation":false,"usgs":true,"family":"Nebert","given":"D.","email":"","affiliations":[],"preferred":false,"id":442795,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032530,"text":"70032530 - 2009 - Mapping of accumulated nitrogen in the sediment pore water of a eutrophic lake in Iowa, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032530","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1539,"text":"Environmental Geology","active":true,"publicationSubtype":{"id":10}},"title":"Mapping of accumulated nitrogen in the sediment pore water of a eutrophic lake in Iowa, USA","docAbstract":"A large pool of nitrogen in the sediment pore fluid of a eutrophic lake in Iowa, USA, was mapped in this study. Previously, the lake had supported fishing and boating, but today it no longer supports its designated uses as a recreational water body. In the top 5 cm of the lake bottom, the pore water nitrogen ranges between 3.1 and 1,250 ??g/cm3 of sediments, with an average of 160.3 ??g/cm3. Vertically, nitrate concentrations were measured as 153 ??g/cm3 at 0-10 cm, 162 ??g/cm3 at 10-20 cm, and 32 ??g/cm3 at 20-30 cm. Nitrate mass distribution was quantified as 3.67 ?? 103 kg (65%) in the bottom sediments, 172 kg (3%) in suspended particulates, and 1.83 ?? 103 kg (32%) in the dissolved phase. Soil runoff nutrients arrive at the lake from the heavily fertilized lands in the watershed. Upon sedimentation, a large mass of nitrogen desorbs from mineral particles to the relatively immobile pore fluid. Under favorable conditions, this nitrogen diffuses back into the water column, thereby dramatically limiting the lake's capability to process incoming nutrients from farmlands. Consequently, a condition of oxygen deficiency disrupts the post-season biological activities in the lake. ?? 2008 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00254-008-1317-x","issn":"09430","usgsCitation":"Iqbal, M., and Fields, C., 2009, Mapping of accumulated nitrogen in the sediment pore water of a eutrophic lake in Iowa, USA: Environmental Geology, v. 57, no. 2, p. 465-475, https://doi.org/10.1007/s00254-008-1317-x.","startPage":"465","endPage":"475","numberOfPages":"11","costCenters":[],"links":[{"id":213914,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-008-1317-x"},{"id":241586,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"57","issue":"2","noUsgsAuthors":false,"publicationDate":"2008-04-18","publicationStatus":"PW","scienceBaseUri":"505a5065e4b0c8380cd6b680","contributors":{"authors":[{"text":"Iqbal, M.Z.","contributorId":45911,"corporation":false,"usgs":true,"family":"Iqbal","given":"M.Z.","email":"","affiliations":[],"preferred":false,"id":436649,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fields, C.L.","contributorId":83343,"corporation":false,"usgs":true,"family":"Fields","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":436650,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033041,"text":"70033041 - 2009 - Transport of viruses through saturated and unsaturated columns packed with sand","interactions":[],"lastModifiedDate":"2018-09-13T10:26:25","indexId":"70033041","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3646,"text":"Transport in Porous Media","active":true,"publicationSubtype":{"id":10}},"title":"Transport of viruses through saturated and unsaturated columns packed with sand","docAbstract":"<p><span>Laboratory-scale virus transport experiments were conducted in columns packed with sand under saturated and unsaturated conditions. The viruses employed were the male-specific RNA coliphage, MS2, and the&nbsp;</span><i class=\"EmphasisTypeItalic \">Salmonella typhimurium</i><span>&nbsp;phage, PRD1. The mathematical model developed by Sim and Chrysikopoulos (Water Resour Res 36:173–179, 2000) that accounts for processes responsible for removal of viruses during vertical transport in one-dimensional, unsaturated porous media was used to fit the data collected from the laboratory experiments. The liquid to liquid–solid and liquid to air–liquid interface mass transfer rate coefficients were shown to increase for both bacteriophage as saturation levels were reduced. The experimental results indicate that even for unfavorable attachment conditions within a sand column (e.g., phosphate-buffered saline solution; pH = 7.5; ionic strength = 2&nbsp;mM), saturation levels can affect virus transport through porous media.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s11242-008-9239-3","issn":"01693","usgsCitation":"Anders, R., and Chrysikopoulos, C., 2009, Transport of viruses through saturated and unsaturated columns packed with sand: Transport in Porous Media, v. 76, no. 1, p. 121-138, https://doi.org/10.1007/s11242-008-9239-3.","productDescription":"18 p.","startPage":"121","endPage":"138","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":241115,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213488,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11242-008-9239-3"}],"volume":"76","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-05-24","publicationStatus":"PW","scienceBaseUri":"505bb75ae4b08c986b3271f8","contributors":{"authors":[{"text":"Anders, R.","contributorId":74174,"corporation":false,"usgs":true,"family":"Anders","given":"R.","email":"","affiliations":[],"preferred":false,"id":439083,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chrysikopoulos, C.V.","contributorId":16214,"corporation":false,"usgs":true,"family":"Chrysikopoulos","given":"C.V.","email":"","affiliations":[],"preferred":false,"id":439082,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032525,"text":"70032525 - 2009 - Two statistics for evaluating parameter identifiability and error reduction","interactions":[],"lastModifiedDate":"2014-06-02T11:06:13","indexId":"70032525","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Two statistics for evaluating parameter identifiability and error reduction","docAbstract":"Two statistics are presented that can be used to rank input parameters utilized by a model in terms of their relative identifiability based on a given or possible future calibration dataset. Identifiability is defined here as the capability of model calibration to constrain parameters used by a model. Both statistics require that the sensitivity of each model parameter be calculated for each model output for which there are actual or presumed field measurements. Singular value decomposition (SVD) of the weighted sensitivity matrix is then undertaken to quantify the relation between the parameters and observations that, in turn, allows selection of calibration solution and null spaces spanned by unit orthogonal vectors. The first statistic presented, \"parameter identifiability\", is quantitatively defined as the direction cosine between a parameter and its projection onto the calibration solution space. This varies between zero and one, with zero indicating complete non-identifiability and one indicating complete identifiability. The second statistic, \"relative error reduction\", indicates the extent to which the calibration process reduces error in estimation of a parameter from its pre-calibration level where its value must be assigned purely on the basis of prior expert knowledge. This is more sophisticated than identifiability, in that it takes greater account of the noise associated with the calibration dataset. Like identifiability, it has a maximum value of one (which can only be achieved if there is no measurement noise). Conceptually it can fall to zero; and even below zero if a calibration problem is poorly posed. An example, based on a coupled groundwater/surface-water model, is included that demonstrates the utility of the statistics. ?? 2009 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2008.12.018","issn":"00221","usgsCitation":"Doherty, J., and Hunt, R.J., 2009, Two statistics for evaluating parameter identifiability and error reduction: Journal of Hydrology, v. 366, no. 1-4, p. 119-127, https://doi.org/10.1016/j.jhydrol.2008.12.018.","startPage":"119","endPage":"127","numberOfPages":"9","costCenters":[],"links":[{"id":213886,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2008.12.018"},{"id":241553,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"366","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb989e4b08c986b327c4b","contributors":{"authors":[{"text":"Doherty, John","contributorId":43843,"corporation":false,"usgs":true,"family":"Doherty","given":"John","affiliations":[],"preferred":false,"id":436637,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunt, Randall J. 0000-0001-6465-9304 rjhunt@usgs.gov","orcid":"https://orcid.org/0000-0001-6465-9304","contributorId":1129,"corporation":false,"usgs":true,"family":"Hunt","given":"Randall","email":"rjhunt@usgs.gov","middleInitial":"J.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":436636,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70176176,"text":"70176176 - 2009 - Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay","interactions":[{"subject":{"id":70176176,"text":"70176176 - 2009 - Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay","indexId":"70176176","publicationYear":"2009","noYear":false,"title":"Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay"},"predicate":"IS_PART_OF","object":{"id":97928,"text":"sir20095049 - 2009 - Planning for an uncertain future - Monitoring, integration, and adaptation","indexId":"sir20095049","publicationYear":"2009","noYear":false,"title":"Planning for an uncertain future - Monitoring, integration, and adaptation"},"id":1}],"isPartOf":{"id":97928,"text":"sir20095049 - 2009 - Planning for an uncertain future - Monitoring, integration, and adaptation","indexId":"sir20095049","publicationYear":"2009","noYear":false,"title":"Planning for an uncertain future - Monitoring, integration, and adaptation"},"lastModifiedDate":"2021-11-08T16:36:30.322055","indexId":"70176176","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay","docAbstract":"<p>The Tolay Creek Watershed drains approximately 3,520 ha along the northern edge of San Francisco Bay. Surrounded by a mosaic of open space conservation easements and public wildlife areas, it is one of the only watersheds in this urbanized estuary that is protected from its headwaters to the bay. Tolay Lake is a seasonal, spring-fed lake found in the upper watershed that historically extended over 120 ha. Although the lakebed was farmed since the early 1860s, the majority of the lakebed was recently acquired by the Sonoma County Regional Parks Department to restore its natural habitat values. As part of the restoration planning process, we produced a digital elevation model (DEM) of the historic extent of Tolay Lake by integrating terrestrial LiDAR (light detection and ranging) and stereo photogrammetry datasets, and real-time kinematic (RTK) global positioning system (GPS) surveys. We integrated the data, generated a DEM of the lakebed and upland areas, and analyzed errors. The accuracy of the composite DEM was verified using spot elevations obtained from the RTK GPS. Thus, we found that by combining photogrammetry, terrestrial LiDAR, and RTK GPS, we created an accurate baseline elevation map to use in watershed restoration planning and design.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Planning for an uncertain future - Monitoring, integration, and adaptation","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"conferenceTitle":"Third interagency conference on research in the watersheds","conferenceDate":"September 8-11, 2008","conferenceLocation":"Estes Park, CO","language":"English","publisher":"U.S Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Woo, I., Storesund, R., Takekawa, J.Y., Gardiner, R.J., and Ehret, S., 2009, Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay, <i>in</i> Planning for an uncertain future - Monitoring, integration, and adaptation, Estes Park, CO, September 8-11, 2008, p. 279-284.","productDescription":"6 p.","startPage":"279","endPage":"284","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-010725","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":328099,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":328098,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2009/5049/pdf/Woo.pdf"}],"country":"United States","state":"California","otherGeospatial":"northern San Francisco Bay, Tolay Lake","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.52725601196288,\n              38.1975848123397\n            ],\n            [\n              -122.51,\n              38.1975848123397\n            ],\n            [\n              -122.51,\n              38.21748069161304\n            ],\n            [\n              -122.52725601196288,\n              38.21748069161304\n            ],\n            [\n              -122.52725601196288,\n              38.1975848123397\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57c7ffb4e4b0f2f0cebfc27e","contributors":{"authors":[{"text":"Woo, Isa 0000-0002-8447-9236 iwoo@usgs.gov","orcid":"https://orcid.org/0000-0002-8447-9236","contributorId":2524,"corporation":false,"usgs":true,"family":"Woo","given":"Isa","email":"iwoo@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":647598,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Storesund, Rune Rune","contributorId":121326,"corporation":false,"usgs":true,"family":"Storesund","given":"Rune","suffix":"Rune","email":"","affiliations":[],"preferred":false,"id":647599,"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":647600,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gardiner, Rachel J.","contributorId":174164,"corporation":false,"usgs":false,"family":"Gardiner","given":"Rachel","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":647601,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ehret, Steve Steve","contributorId":121092,"corporation":false,"usgs":true,"family":"Ehret","given":"Steve","suffix":"Steve","email":"","affiliations":[],"preferred":false,"id":647602,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033924,"text":"70033924 - 2009 - Isomer-specific determination of 4-nonylphenols using comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry","interactions":[],"lastModifiedDate":"2018-10-12T10:26:17","indexId":"70033924","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Isomer-specific determination of 4-nonylphenols using comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry","docAbstract":"<div class=\"hlFld-Abstract\"><div id=\"abstractBox\"><p class=\"articleBody_abstractText\">Technical nonylphenol (tNP), used for industrial production of nonylphenol polyethoxylate surfactants, is a complex mixture of C<sub>3−10</sub>-phenols. The major components, 4-nonylphenols, are weak endocrine disruptors whose estrogenicities vary according to the structure of the branched nonyl group. Thus, accurate risk assessment requires isomer-specific determination of 4-NPs. Comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC × GC/ToFMS) was used to characterize tNP samples obtained from seven commercial suppliers. Under optimal chromatographic conditions, 153−204 alkylphenol peaks, 59−66 of which were identified as 4-NPs, were detected. The 4-NPs comprised ∼86−94% of tNP, with 2-NPs and decylphenols making up ∼2−9% and ∼2−5%, respectively. The tNP products were analyzed for eight synthetic 4-NP isomers, and results were compared with published data based on GC/MS analysis. Significant differences were found among the products and between two samples from a single supplier. The enhanced resolution of GC × GC coupled with fast mass spectral data acquisition by ToFMS facilitated identification of all major 4-NP isomers and a number of previously unrecognized components. Analysis of tNP altered by the bacterium,<span>&nbsp;</span><i>Sphingobium xenophagum</i><span>&nbsp;</span>Bayram, revealed several persistent 4-NPs whose structures and estrogenicities are presently unknown. The potential of this technology for isomer-specific determination of 4-NP isomers in environmental matrices is demonstrated using samples of wastewater-contaminated groundwater and municipal wastewater.</p></div></div><div class=\"hlFld-Fulltext\"><br data-mce-bogus=\"1\"></div>","language":"English","publisher":"ACS","doi":"10.1021/es902622r","issn":"0013936X","usgsCitation":"Eganhouse, R., Pontolillo, J., Gaines, R., Frysinger, G., Gabriel, F., Kohler, H., Giger, W., and Barber, L.B., 2009, Isomer-specific determination of 4-nonylphenols using comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry: Environmental Science & Technology, v. 43, no. 24, p. 9306-9313, https://doi.org/10.1021/es902622r.","productDescription":"8 p.","startPage":"9306","endPage":"9313","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241941,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214241,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es902622r"}],"volume":"43","issue":"24","noUsgsAuthors":false,"publicationDate":"2009-11-19","publicationStatus":"PW","scienceBaseUri":"505a3f59e4b0c8380cd64478","contributors":{"authors":[{"text":"Eganhouse, R.P.","contributorId":67555,"corporation":false,"usgs":true,"family":"Eganhouse","given":"R.P.","email":"","affiliations":[],"preferred":false,"id":443207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pontolillo, J.","contributorId":43376,"corporation":false,"usgs":true,"family":"Pontolillo","given":"J.","affiliations":[],"preferred":false,"id":443203,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gaines, R.B.","contributorId":44748,"corporation":false,"usgs":true,"family":"Gaines","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":443204,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Frysinger, G.S.","contributorId":22979,"corporation":false,"usgs":true,"family":"Frysinger","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":443200,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gabriel, F.L.P.","contributorId":30465,"corporation":false,"usgs":true,"family":"Gabriel","given":"F.L.P.","email":"","affiliations":[],"preferred":false,"id":443201,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kohler, H.-P.E.","contributorId":50365,"corporation":false,"usgs":true,"family":"Kohler","given":"H.-P.E.","email":"","affiliations":[],"preferred":false,"id":443205,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Giger, W.","contributorId":38714,"corporation":false,"usgs":true,"family":"Giger","given":"W.","email":"","affiliations":[],"preferred":false,"id":443202,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Barber, L. B.","contributorId":64602,"corporation":false,"usgs":true,"family":"Barber","given":"L.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":443206,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70033925,"text":"70033925 - 2009 - Causes of bat fatalities at wind turbines: Hypotheses and predictions","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033925","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Causes of bat fatalities at wind turbines: Hypotheses and predictions","docAbstract":"Thousands of industrial-scale wind turbines are being built across the world each year to meet the growing demand for sustainable energy. Bats of certain species are dying at wind turbines in unprecedented numbers. Species of bats consistently affected by turbines tend to be those that rely on trees as roosts and most migrate long distances. Although considerable progress has been made in recent years toward better understanding the problem, the causes of bat fatalities at turbines remain unclear. In this synthesis, we review hypothesized causes of bat fatalities at turbines. Hypotheses of cause fall into 2 general categoriesproximate and ultimate. Proximate causes explain the direct means by which bats die at turbines and include collision with towers and rotating blades, and barotrauma. Ultimate causes explain why bats come close to turbines and include 3 general types: random collisions, coincidental collisions, and collisions that result from attraction of bats to turbines. The random collision hypothesis posits that interactions between bats and turbines are random events and that fatalities are representative of the bats present at a site. Coincidental hypotheses posit that certain aspects of bat distribution or behavior put them at risk of collision and include aggregation during migration and seasonal increases in flight activity associated with feeding or mating. A surprising number of attraction hypotheses suggest that bats might be attracted to turbines out of curiosity, misperception, or as potential feeding, roosting, flocking, and mating opportunities. Identifying, prioritizing, and testing hypothesized causes of bat collisions with wind turbines are vital steps toward developing practical solutions to the problem. ?? 2009 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/09-MAMM-S-076R1.1","issn":"00222372","usgsCitation":"Cryan, P., and Barclay, R., 2009, Causes of bat fatalities at wind turbines: Hypotheses and predictions: Journal of Mammalogy, v. 90, no. 6, p. 1330-1340, https://doi.org/10.1644/09-MAMM-S-076R1.1.","startPage":"1330","endPage":"1340","numberOfPages":"11","costCenters":[],"links":[{"id":476424,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://www.bioone.org/doi/10.1644/09-MAMM-S-076R1.1","text":"External Repository"},{"id":214242,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/09-MAMM-S-076R1.1"},{"id":241942,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f3d3e4b0c8380cd4b9b1","contributors":{"authors":[{"text":"Cryan, P.M.","contributorId":82635,"corporation":false,"usgs":true,"family":"Cryan","given":"P.M.","affiliations":[],"preferred":false,"id":443208,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barclay, R.M.R.","contributorId":107943,"corporation":false,"usgs":true,"family":"Barclay","given":"R.M.R.","email":"","affiliations":[],"preferred":false,"id":443209,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032492,"text":"70032492 - 2009 - Does juvenile competition explain displacement of a native crayfish by an introduced crayfish?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032492","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1018,"text":"Biological Invasions","active":true,"publicationSubtype":{"id":10}},"title":"Does juvenile competition explain displacement of a native crayfish by an introduced crayfish?","docAbstract":"The coldwater crayfish Orconectes eupunctus is endemic to the Spring and Eleven Point Rivers of Arkansas and Missouri, and appears to have been displaced from a portion of its range by the recently introduced ringed crayfish Orconectes neglectus. We examined competition among juveniles as a potential mechanism for this crayfish species displacement through laboratory and field experiments. Orconectes eupunctus juveniles survived and grew in stream cages in their former range, implicating biotic interactions rather than habitat degradation in the displacement. Laboratory experiments revealed O. neglectus juveniles were dominant in the presence of limited food, whereas size rather than species determined occupancy of limited shelter. In a field competition experiment using stream cages, O. neglectus juveniles did not inhibit growth or reduce survival of O. eupunctus juveniles. Consequently, laboratory evidence of O. neglectus dominance did not correspond with competition under field conditions. Combined with previous studies examining the effects of O. neglectus on O. eupunctus, these results suggest that competition may not be a factor in this crayfish species displacement. Alternate mechanisms for the apparent displacement of O. eupunctus by O. neglectus, such as differential predation or reproductive interference, should be investigated. ?? 2008 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Invasions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10530-008-9286-2","issn":"13873","usgsCitation":"Larson, E., and Magoulick, D., 2009, Does juvenile competition explain displacement of a native crayfish by an introduced crayfish?: Biological Invasions, v. 11, no. 3, p. 725-735, https://doi.org/10.1007/s10530-008-9286-2.","startPage":"725","endPage":"735","numberOfPages":"11","costCenters":[],"links":[{"id":213911,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10530-008-9286-2"},{"id":241582,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"3","noUsgsAuthors":false,"publicationDate":"2008-06-11","publicationStatus":"PW","scienceBaseUri":"505a0392e4b0c8380cd50547","contributors":{"authors":[{"text":"Larson, E.R.","contributorId":94114,"corporation":false,"usgs":true,"family":"Larson","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":436459,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Magoulick, D.D.","contributorId":80862,"corporation":false,"usgs":true,"family":"Magoulick","given":"D.D.","affiliations":[],"preferred":false,"id":436458,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033918,"text":"70033918 - 2009 - Gravity investigations of the Chesapeake Bay impact structure","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033918","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Gravity investigations of the Chesapeake Bay impact structure","docAbstract":"The Chesapeake Bay impact structure is a complex impact crater, ??85 km in diameter, buried beneath postimpact sediments. Its main structural elements include a central uplift of crystalline bedrock, a surrounding inner crater filled with impact debris, and an annular faulted margin composed of block-faulted sediments. The gravity anomaly is consistent with that of a complex impact consisting of a central positive anomaly over the central uplift and an annular negative anomaly over the inner crater. An anomaly is not recognized as being associated with the faulted margin or the outer edge of the structure. Densities from the Eyreville drill core and modeling indicate a density contrast of ??0.3-0.6 g cm<sup>-3</sup> between crystalline basement and the material that fills the inner crater (e.g., Exmore breccia and suevite). This density contrast is somewhat higher than for other impact structures, but it is a function of the manner in which the crater fill was deposited (as a marine resurge deposit). Modeling of the gravity data is consistent with a depth to basement of ??1600 m at the site of Eyreville drill hole and 800 m at the central uplift. Both depths are greater than the depth at which crystalline rocks were encountered in the cores, suggesting that the cored material is highly fractured para-allochthonous rock. ?? 2009 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2009.2458(09)","issn":"00721077","usgsCitation":"Plescia, J.B., Daniels, D.L., and Shah, A., 2009, Gravity investigations of the Chesapeake Bay impact structure: Special Paper of the Geological Society of America, no. 458, p. 181-193, https://doi.org/10.1130/2009.2458(09).","startPage":"181","endPage":"193","numberOfPages":"13","costCenters":[],"links":[{"id":241847,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214153,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2009.2458(09)"}],"issue":"458","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2a1be4b0c8380cd5aed1","contributors":{"authors":[{"text":"Plescia, J. B.","contributorId":15689,"corporation":false,"usgs":true,"family":"Plescia","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":443169,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Daniels, D. L.","contributorId":69114,"corporation":false,"usgs":true,"family":"Daniels","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":443170,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shah, A. K. 0000-0002-3198-081X","orcid":"https://orcid.org/0000-0002-3198-081X","contributorId":101789,"corporation":false,"usgs":true,"family":"Shah","given":"A. K.","affiliations":[],"preferred":false,"id":443171,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033073,"text":"70033073 - 2009 - Multi-segment earthquakes and tsunami potential of the Aleutian megathrust","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70033073","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Multi-segment earthquakes and tsunami potential of the Aleutian megathrust","docAbstract":"Large to great earthquakes and related tsunamis generated on the Aleutian megathrust produce major hazards for both the area of rupture and heavily populated coastlines around much of the Pacific Ocean. Here we use paleoseismic records preserved in coastal sediments to investigate whether segment boundaries control the largest ruptures or whether in some seismic cycles segments combine to produce earthquakes greater than any observed since instrumented records began. Virtually the entire megathrust has ruptured since AD1900, with four different segments generating earthquakes >M8.0. The largest was the M9.2 great Alaska earthquake of March 1964 that ruptured ???800 km of the eastern segment of the megathrust. The tsunami generated caused fatalities in Alaska and along the coast as far south as California. East of the 1964 zone of deformation, the Yakutat microplate experienced two >M8.0 earthquakes, separated by a week, in September 1899. For the first time, we present evidence that earthquakes ???900 and ???1500 years ago simultaneously ruptured adjacent segments of the Aleutian megathrust and the Yakutat microplate, with a combined area ???15% greater than 1964, giving an earthquake of greater magnitude and increased tsunamigenic potential. ?? 2008 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Science Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quascirev.2008.09.016","issn":"02773","usgsCitation":"Shennan, I., Bruhn, R., and Plafker, G., 2009, Multi-segment earthquakes and tsunami potential of the Aleutian megathrust: Quaternary Science Reviews, v. 28, no. 1-2, p. 7-13, https://doi.org/10.1016/j.quascirev.2008.09.016.","startPage":"7","endPage":"13","numberOfPages":"7","costCenters":[],"links":[{"id":487768,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://durham-repository.worktribe.com/output/1549631","text":"External Repository"},{"id":213525,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quascirev.2008.09.016"},{"id":241155,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5fc5e4b0c8380cd71114","contributors":{"authors":[{"text":"Shennan, I.","contributorId":61971,"corporation":false,"usgs":true,"family":"Shennan","given":"I.","email":"","affiliations":[],"preferred":false,"id":439275,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bruhn, R.","contributorId":107106,"corporation":false,"usgs":true,"family":"Bruhn","given":"R.","email":"","affiliations":[],"preferred":false,"id":439276,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Plafker, George 0000-0003-3972-0390","orcid":"https://orcid.org/0000-0003-3972-0390","contributorId":36603,"corporation":false,"usgs":true,"family":"Plafker","given":"George","affiliations":[],"preferred":false,"id":439274,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032425,"text":"70032425 - 2009 - Groundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032425","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA","docAbstract":"The Everglades (Florida, USA) is one of the world's larger subtropical peatlands with biological communities adapted to waters low in total dissolved solids and nutrients. Detecting how the pre-drainage hydrological system has been altered is crucial to preserving its functional attributes. However, reliable tools for hindcasting historic conditions in the Everglades are limited. A recent synthesis demonstrates that the proportion of surface-water inflows has increased relative to precipitation, accounting for 33% of total inputs compared with 18% historically. The largest new source of water is canal drainage from areas of former wetlands converted to agriculture. Interactions between groundwater and surface water have also increased, due to increasing vertical hydraulic gradients resulting from topographic and water-level alterations on the otherwise extremely flat landscape. Environmental solute tracer data were used to determine groundwater's changing role, from a freshwater storage reservoir that sustained the Everglades ecosystem during dry periods to a reservoir of increasingly degraded water quality. Although some of this degradation is attributable to increased discharge of deep saline groundwater, other mineral sources such as fertilizer additives and peat oxidation have made a greater contribution to water-quality changes that are altering mineral-sensitive biological communities. ?? Springer-Verlag 2008.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-008-0379-x","issn":"14312","usgsCitation":"Harvey, J., and McCormick, P., 2009, Groundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA: Hydrogeology Journal, v. 17, no. 1, p. 185-201, https://doi.org/10.1007/s10040-008-0379-x.","startPage":"185","endPage":"201","numberOfPages":"17","costCenters":[],"links":[{"id":476265,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s10040-008-0379-x","text":"Publisher Index Page"},{"id":213879,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-008-0379-x"},{"id":241545,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-10-29","publicationStatus":"PW","scienceBaseUri":"505a2dc4e4b0c8380cd5c004","contributors":{"authors":[{"text":"Harvey, J. W. 0000-0002-2654-9873","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":39725,"corporation":false,"usgs":true,"family":"Harvey","given":"J. W.","affiliations":[],"preferred":false,"id":436102,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCormick, P.V.","contributorId":93272,"corporation":false,"usgs":true,"family":"McCormick","given":"P.V.","email":"","affiliations":[],"preferred":false,"id":436103,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033103,"text":"70033103 - 2009 - Polymorphic microsatellite loci for the sand pocket mouse Chaetodipus arenarius, an endemic from the Baja California Peninsula","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70033103","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2776,"text":"Molecular Ecology Resources","active":true,"publicationSubtype":{"id":10}},"title":"Polymorphic microsatellite loci for the sand pocket mouse Chaetodipus arenarius, an endemic from the Baja California Peninsula","docAbstract":"Fifteen polymorphic microsatellite loci were isolated from an enriched genomic library of the sand pocket mouse Chaetodipus arenarius. The mean number of alleles per locus was 11.53 (range five to 19) and the average observed heterozygosity was 0.764 (range 0.121 to 1.0). The markers will be used for detecting the impact of human-induced habitat fragmentation on patterns of gene flow, genetic structure, and extinction risk. In addition, these markers will be useful across the genus because most of the loci cross-amplified and were polymorphic in three other species of Chaetodipus. ?? 2008 The Authors.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Molecular Ecology Resources","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1755-0998.2008.02399.x","issn":"17550","usgsCitation":"Munguia-Vega, A., Rodriguez-Estrella, R., Nachman, M., and Culver, M., 2009, Polymorphic microsatellite loci for the sand pocket mouse Chaetodipus arenarius, an endemic from the Baja California Peninsula: Molecular Ecology Resources, v. 9, no. 1, p. 305-307, https://doi.org/10.1111/j.1755-0998.2008.02399.x.","startPage":"305","endPage":"307","numberOfPages":"3","costCenters":[],"links":[{"id":213422,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1755-0998.2008.02399.x"},{"id":241047,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-01-22","publicationStatus":"PW","scienceBaseUri":"505a7d04e4b0c8380cd79cdd","contributors":{"authors":[{"text":"Munguia-Vega, A.","contributorId":103091,"corporation":false,"usgs":true,"family":"Munguia-Vega","given":"A.","affiliations":[{"id":27043,"text":"University of Arizona, School of Natural Resources and the Environment.","active":true,"usgs":false},{"id":127,"text":"Arizona Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":439383,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rodriguez-Estrella, R.","contributorId":66489,"corporation":false,"usgs":true,"family":"Rodriguez-Estrella","given":"R.","affiliations":[],"preferred":false,"id":439381,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nachman, M.","contributorId":28080,"corporation":false,"usgs":true,"family":"Nachman","given":"M.","email":"","affiliations":[],"preferred":false,"id":439380,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Culver, M.","contributorId":92462,"corporation":false,"usgs":true,"family":"Culver","given":"M.","email":"","affiliations":[],"preferred":false,"id":439382,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033037,"text":"70033037 - 2009 - Sanitation of entire broods of dead nestlings may bias cause-specific nest failure rates","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70033037","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1961,"text":"Ibis","active":true,"publicationSubtype":{"id":10}},"title":"Sanitation of entire broods of dead nestlings may bias cause-specific nest failure rates","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ibis","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1474-919X.2008.00893.x","issn":"00191","usgsCitation":"Kirkpatrick, C., Conway, C., and Ali, M., 2009, Sanitation of entire broods of dead nestlings may bias cause-specific nest failure rates: Ibis, v. 151, no. 1, p. 207-211, https://doi.org/10.1111/j.1474-919X.2008.00893.x.","startPage":"207","endPage":"211","numberOfPages":"5","costCenters":[],"links":[{"id":213419,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1474-919X.2008.00893.x"},{"id":241043,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"151","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-12-18","publicationStatus":"PW","scienceBaseUri":"505b86b2e4b08c986b3160a2","contributors":{"authors":[{"text":"Kirkpatrick, C.","contributorId":73356,"corporation":false,"usgs":true,"family":"Kirkpatrick","given":"C.","email":"","affiliations":[],"preferred":false,"id":439072,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conway, C.J.","contributorId":33417,"corporation":false,"usgs":true,"family":"Conway","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":439071,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ali, M.H.","contributorId":28079,"corporation":false,"usgs":true,"family":"Ali","given":"M.H.","email":"","affiliations":[],"preferred":false,"id":439070,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033039,"text":"70033039 - 2009 - Sulfur geochemistry of hydrothermal waters in Yellowstone National Park: IV Acid-sulfate waters","interactions":[],"lastModifiedDate":"2018-10-03T10:58:36","indexId":"70033039","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Sulfur geochemistry of hydrothermal waters in Yellowstone National Park: IV Acid-sulfate waters","docAbstract":"Many waters sampled in Yellowstone National Park, both high-temperature (30-94 ??C) and low-temperature (0-30 ??C), are acid-sulfate type with pH values of 1-5. Sulfuric acid is the dominant component, especially as pH values decrease below 3, and it forms from the oxidation of elemental S whose origin is H2S in hot gases derived from boiling of hydrothermal waters at depth. Four determinations of pH were obtained: (1) field pH at field temperature, (2) laboratory pH at laboratory temperature, (3) pH based on acidity titration, and (4) pH based on charge imbalance (at both laboratory and field temperatures). Laboratory pH, charge imbalance pH (at laboratory temperature), and acidity pH were in close agreement for pH < 2.7. Field pH measurements were predominantly used because the charge imbalance was <??10%. When the charge imbalance was generally >??10%, a selection process was used to compare acidity, laboratory, and charge balance pH to arrive at the best estimate. Differences between laboratory and field pH can be explained based on Fe oxidation, H2S or S2O3 oxidation, CO2 degassing, and the temperature-dependence of pK2 for H2SO4. Charge imbalances are shown to be dependent on a speciation model for pH values <3. The highest SO4 concentrations, in the thousands of mg/L, result from evaporative concentration at elevated temperatures as shown by the consistently high ??18O values (-10??? to -3???) and a ??D vs. ??18O slope of 3, reflecting kinetic fractionation. Low SO4 concentrations (<100 mg/L) for thermal waters (>350 mg/L Cl) decrease as the Cl- concentration increases from boiling which appears inconsistent with the hypothesis of H2S oxidation as a source of hydrothermal SO4. This trend is consistent with the alternate hypothesis of anhydrite solubility equilibrium. Acid-sulfate water analyses are occasionally high in As, Hg, and NH3 concentrations but in contrast to acid mine waters they are low to below detection in Cu, Zn, Cd, and Pb concentrations. Even concentrations of SO4, Fe, and Al are much lower in thermal waters than acid mine waters of the same pH. This difference in water chemistry may explain why certain species of fly larvae live comfortably in Yellowstone's acid waters but have not been observed in acid rock drainage of the same pH.","language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2008.11.019","issn":"08832","usgsCitation":"Nordstrom, D.K., McCleskey, R.B., and Ball, J., 2009, Sulfur geochemistry of hydrothermal waters in Yellowstone National Park: IV Acid-sulfate waters: Applied Geochemistry, v. 24, no. 2, p. 191-207, https://doi.org/10.1016/j.apgeochem.2008.11.019.","productDescription":"17 p.","startPage":"191","endPage":"207","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241082,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213456,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2008.11.019"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9dd7e4b08c986b31db00","contributors":{"authors":[{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":false,"id":439079,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCleskey, R. Blaine 0000-0002-2521-8052 rbmccles@usgs.gov","orcid":"https://orcid.org/0000-0002-2521-8052","contributorId":147399,"corporation":false,"usgs":true,"family":"McCleskey","given":"R.","email":"rbmccles@usgs.gov","middleInitial":"Blaine","affiliations":[{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":439077,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ball, J.W.","contributorId":67507,"corporation":false,"usgs":true,"family":"Ball","given":"J.W.","affiliations":[],"preferred":false,"id":439078,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033835,"text":"70033835 - 2009 - Variability of the Southern California wave climate and implications for sediment transport","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033835","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Variability of the Southern California wave climate and implications for sediment transport","docAbstract":"We analyzed wave and wind data from 18 buoys in the Southern California Bight to characterize the spatial and temporal variability of the regional wave climate. Point Conception shelters most of the Bight from being directly impacted by North Pacific weather. The wave height inside the sheltered zone and to the east of the Channel Islands is less than half the wave height in the open ocean to the west. Within the sheltered Bight, storm waves (by proxy of being greater than the 95th percentile wave height for more than 6 hours) are mainly from the west, but long period swells (T<sup>p</sup> &gt;15 seconds) are mainly from the south-southwest. There are on average two to four storms during each winter month (November-March) and fewer than two storms per month for the rest of the year. The Channel Islands selectively block the westerly swells and make the wave climate in the Santa Barbara Channel different from the rest of the sheltered Bight. A statistically significant wave-height minimum exists in the area offshore Dana Point and Oceanside. The multiyear (2-23 years) wave-data records from all 18 buoys show negligible temporal trend, positive or negative. Like the wave climate, the long-term probability of sediment transport on the continental shelves of the Bight displays large difference between the sheltered and open-ocean (near Point Conception) sites. The return period of incipient sediment motion on the sheltered shelf breaks (one to five months) is at least two orders of magnitude longer than that on the Point Conception shelf break (0.6 day). Similar to the spatial distribution of wave heights, there is a systematic return-period maximum on the shelf off Dana Point and Oceanside. ?? 2009 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2009.2454(3.2)","issn":"00721077","usgsCitation":"Xu, J.P., and Noble, M., 2009, Variability of the Southern California wave climate and implications for sediment transport: Special Paper of the Geological Society of America, no. 454, p. 171-191, https://doi.org/10.1130/2009.2454(3.2).","startPage":"171","endPage":"191","numberOfPages":"21","costCenters":[],"links":[{"id":214379,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2009.2454(3.2)"},{"id":242102,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"454","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc13ee4b08c986b32a4cb","contributors":{"authors":[{"text":"Xu, J. P.","contributorId":74528,"corporation":false,"usgs":true,"family":"Xu","given":"J.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":442768,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Noble, M.A.","contributorId":93513,"corporation":false,"usgs":true,"family":"Noble","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":442769,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032370,"text":"70032370 - 2009 - Seed reserves diluted during surface soil reclamation in eastern Mojave Desert","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032370","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":904,"text":"Arid Land Research and Management","active":true,"publicationSubtype":{"id":10}},"title":"Seed reserves diluted during surface soil reclamation in eastern Mojave Desert","docAbstract":"Surface soil reclamation is used to increase the re-establishment of native vegetation following disturbance through preservation and eventual replacement of the indigenous seed reserves. Employed widely in the mining industry, soil reclamation has had variable success in re-establishing native vegetation in arid and semi-arid regions. We tested whether variable success could be due in part to a decrease of seed reserves during the reclamation process by measuring the change in abundance of germinable seed when surface soil was mechanically collected, stored in a soil pile for 4 months, and reapplied upon completion of a roadway. Overall seed reserve declines amounted to 86% of the original germinable seed in the soil. The greatest decrease in seed reserves occurred during soil collection (79% of original reserves), compared to the storage and reapplication stages. At nearby sites where stored surface soil had been reapplied, no perennial plant cover occurred from 0.5 to 5 years after application and <1% cover after 7 years compared to 5% cover in nearby undisturbed areas. The reduction in abundance of germinable seed during reclamation was primarily due to dilution of seed reserves when deeper soil fractions without seed were mixed with the surface soil during collection. Unless more precise techniques of surface soil collection are utilized, soil reclamation alone as a means for preserving native seed reserves is a method ill-suited for revegetating disturbed soils with a shallow seed bank, such as those found in the Mojave Desert. Copyright ?? Taylor & Francis Group, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Arid Land Research and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/15324980802598698","issn":"15324","usgsCitation":"Scoles-Sciulla, S., and DeFalco, L., 2009, Seed reserves diluted during surface soil reclamation in eastern Mojave Desert: Arid Land Research and Management, v. 23, no. 1, p. 1-13, https://doi.org/10.1080/15324980802598698.","startPage":"1","endPage":"13","numberOfPages":"13","costCenters":[],"links":[{"id":214025,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/15324980802598698"},{"id":241712,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8ac7e4b08c986b31738c","contributors":{"authors":[{"text":"Scoles-Sciulla, S. J.","contributorId":12274,"corporation":false,"usgs":true,"family":"Scoles-Sciulla","given":"S. J.","affiliations":[],"preferred":false,"id":435824,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DeFalco, L.A.","contributorId":46032,"corporation":false,"usgs":true,"family":"DeFalco","given":"L.A.","affiliations":[],"preferred":false,"id":435825,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033069,"text":"70033069 - 2009 - Late Pleistocene paleohydrology near the boundary of the Sonoran and Chihuahuan Deserts, southeastern Arizona, USA","interactions":[],"lastModifiedDate":"2015-03-23T15:51:02","indexId":"70033069","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Late Pleistocene paleohydrology near the boundary of the Sonoran and Chihuahuan Deserts, southeastern Arizona, USA","docAbstract":"Ground-water discharge (GWD) deposits form in arid environments as water tables rise and approach or breach the ground surface during periods of enhanced effective precipitation. Where preserved, these deposits contain information on the timing and elevation of past ground-water fluctuations. Here we report on the investigation of a series of GWD deposits that are exposed in discontinuous outcrops along a ???150-km stretch of the San Pedro Valley in southeastern Arizona, near the boundary of the Sonoran and Chihuahuan Deserts. Chronologic, isotopic, geochemical, faunal assemblage (ostracodes and gastropods), and sedimentological evidence collectively suggest that the elevation of the regional water table in the valley rose in response to a change in climate ???50 ka ago and remained relatively high for the next ???35 ka before falling during the B??lling-Aller??d warm period, rebounding briefly during the Younger Dryas cold event, and falling again at the onset of the Holocene. The timing of these hydrologic changes coincides closely with variations in ??18O values of calcite from a nearby speleothem to the west and changes in lake levels at pluvial Lake Cochise to the east. Thus, in southeastern Arizona, the assumption that changes in climate are reflected in all aspects of the hydrologic cycle of a region simultaneously is validated. The timing of these changes also broadly coincides with variations in the GISP2 ??18O record, which supports the hypothesis that atmospheric teleconnections existed between the North Atlantic and the deserts of the American Southwest during the late Pleistocene.","language":"English","publisher":"Elsevier","doi":"10.1016/j.quascirev.2008.09.022","issn":"02773","usgsCitation":"Pigati, J., Bright, J.E., Shanahan, T.M., and Mahan, S., 2009, Late Pleistocene paleohydrology near the boundary of the Sonoran and Chihuahuan Deserts, southeastern Arizona, USA: Quaternary Science Reviews, v. 28, no. 3-4, p. 286-300, https://doi.org/10.1016/j.quascirev.2008.09.022.","productDescription":"15 p.","startPage":"286","endPage":"300","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":241084,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213458,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quascirev.2008.09.022"}],"country":"United States","state":"Arizona","otherGeospatial":"San Pedro Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -110.49636840820312,\n              32.20699135272648\n            ],\n            [\n              -110.49636840820312,\n              32.3590832787397\n            ],\n            [\n              -110.29037475585936,\n              32.3590832787397\n            ],\n            [\n              -110.29037475585936,\n              32.20699135272648\n            ],\n            [\n              -110.49636840820312,\n              32.20699135272648\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"28","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4517e4b0c8380cd6701c","contributors":{"authors":[{"text":"Pigati, Jeffery S. jpigati@usgs.gov","contributorId":1270,"corporation":false,"usgs":true,"family":"Pigati","given":"Jeffery S.","email":"jpigati@usgs.gov","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":439249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bright, Jordon E.","contributorId":44030,"corporation":false,"usgs":false,"family":"Bright","given":"Jordon","email":"","middleInitial":"E.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":439248,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shanahan, Timothy M.","contributorId":85082,"corporation":false,"usgs":true,"family":"Shanahan","given":"Timothy","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":439247,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mahan, Shannon 0000-0001-5214-7774 smahan@usgs.gov","orcid":"https://orcid.org/0000-0001-5214-7774","contributorId":1215,"corporation":false,"usgs":true,"family":"Mahan","given":"Shannon","email":"smahan@usgs.gov","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":439250,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032368,"text":"70032368 - 2009 - Relative importance of habitat area and isolation for bird occurrence patterns in a naturally patchy landscape","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032368","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Relative importance of habitat area and isolation for bird occurrence patterns in a naturally patchy landscape","docAbstract":"There is debate among ecologists about whether total habitat area or patch arrangement contributes most to population and/or community responses to fragmented or patchy landscapes. We tested the relative effects of patch area and isolation for predicting bird occurrence in a naturally patchy landscape in the Bear River Mountains of Northern Utah, USA. We selected focal patches (mountain meadows) ranging in elevation from 1,920 to 2,860 m and in size from 0.6 to 182 ha. Breeding birds were sampled in each focal meadow during the summers of 2003 and 2004 using variable-distance point transects. Logistic regression and likelihood-based model selection were used to determine the relationship between likelihood of occurrence of three bird species (Brewer's sparrow, vesper sparrow, and white-crowned sparrow) and area, isolation, and proximity metrics. We used model weights and model-averaged confidence intervals to assess the importance of each predictor variable. Plots of area versus isolation were used to evaluate complex relationships between the variables. We found that meadow area was the most important variable for explaining occurrence for two species, and that isolation was the most important for the other. We also found that the absolute distance was more appropriate for evaluating isolation responses than was the species-specific proximity metric. Our findings add clarity to the debate between ecologists regarding the relative importance of area and isolation in species responses to patchy landscapes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Landscape Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10980-008-9309-5","issn":"09212","usgsCitation":"Wilson, T., Johnson, E., and Bissonette, J., 2009, Relative importance of habitat area and isolation for bird occurrence patterns in a naturally patchy landscape: Landscape Ecology, v. 24, no. 3, p. 351-360, https://doi.org/10.1007/s10980-008-9309-5.","startPage":"351","endPage":"360","numberOfPages":"10","costCenters":[],"links":[{"id":213993,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-008-9309-5"},{"id":241677,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"3","noUsgsAuthors":false,"publicationDate":"2008-12-04","publicationStatus":"PW","scienceBaseUri":"505aa684e4b0c8380cd84ec5","contributors":{"authors":[{"text":"Wilson, T.L.","contributorId":78561,"corporation":false,"usgs":true,"family":"Wilson","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":435817,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, E.J.","contributorId":58478,"corporation":false,"usgs":true,"family":"Johnson","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":435816,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bissonette, J.A.","contributorId":21498,"corporation":false,"usgs":true,"family":"Bissonette","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":435815,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032718,"text":"70032718 - 2009 - Fire intensity, fire severity and burn severity: A brief review and suggested usage","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032718","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2083,"text":"International Journal of Wildland Fire","active":true,"publicationSubtype":{"id":10}},"title":"Fire intensity, fire severity and burn severity: A brief review and suggested usage","docAbstract":"Several recent papers have suggested replacing the terminology of fire intensity and fire severity. Part of the problem with fire intensity is that it is sometimes used incorrectly to describe fire effects, when in fact it is justifiably restricted to measures of energy output. Increasingly, the term has created confusion because some authors have restricted its usage to a single measure of energy output referred to as fireline intensity. This metric is most useful in understanding fire behavior in forests, but is too narrow to fully capture the multitude of ways fire energy affects ecosystems. Fire intensity represents the energy released during various phases of a fire, and different metrics such as reaction intensity, fireline intensity, temperature, heating duration and radiant energy are useful for different purposes. Fire severity, and the related term burn severity, have created considerable confusion because of recent changes in their usage. Some authors have justified this by contending that fire severity is defined broadly as ecosystem impacts from fire and thus is open to individual interpretation. However, empirical studies have defined fire severity operationally as the loss of or change in organic matter aboveground and belowground, although the precise metric varies with management needs. Confusion arises because fire or burn severity is sometimes defined so that it also includes ecosystem responses. Ecosystem responses include soil erosion, vegetation regeneration, restoration of community structure, faunal recolonization, and a plethora of related response variables. Although some ecosystem responses are correlated with measures of fire or burn severity, many important ecosystem processes have either not been demonstrated to be predicted by severity indices or have been shown in some vegetation types to be unrelated to severity. This is a critical issue because fire or burn severity are readily measurable parameters, both on the ground and with remote sensing, yet ecosystem responses are of most interest to resource managers.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Wildland Fire","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1071/WF07049","issn":"10498","usgsCitation":"Keeley, J., 2009, Fire intensity, fire severity and burn severity: A brief review and suggested usage: International Journal of Wildland Fire, v. 18, no. 1, p. 116-126, https://doi.org/10.1071/WF07049.","startPage":"116","endPage":"126","numberOfPages":"11","costCenters":[],"links":[{"id":213734,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1071/WF07049"},{"id":241390,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1042e4b0c8380cd53bc7","contributors":{"authors":[{"text":"Keeley, Jon E. 0000-0002-4564-6521","orcid":"https://orcid.org/0000-0002-4564-6521","contributorId":69082,"corporation":false,"usgs":true,"family":"Keeley","given":"Jon E.","affiliations":[],"preferred":false,"id":437614,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70032719,"text":"70032719 - 2009 - Development of nine new microsatellite loci for the American beaver, Castor canadensis (Rodentia: Castoridae), and cross-species amplification in the European beaver, Castor fiber","interactions":[],"lastModifiedDate":"2017-11-25T14:00:20","indexId":"70032719","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2776,"text":"Molecular Ecology Resources","active":true,"publicationSubtype":{"id":10}},"title":"Development of nine new microsatellite loci for the American beaver, Castor canadensis (Rodentia: Castoridae), and cross-species amplification in the European beaver, Castor fiber","docAbstract":"We developed nine new nuclear dinucleotide microsatellite loci for Castor canadensis. All loci were polymorphic, except for one. The number of alleles ranged from two to four and from five to 12 in populations from Arizona and Wisconsin, respectively. Average heterozygosity ranged from 0.13 to 0.86 per locus. Since cross-species amplification in Castor fiber was successful only in four loci, we tested also nine recently published C. canadensis loci in the Eurasian species. Eight of the published loci amplified; however, three were monomorphic. The number of alleles was lower in C. fiber than in C. canadensis at all loci tested. ?? 2009 Blackwell Publishing Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Molecular Ecology Resources","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1755-0998.2008.02364.x","issn":"17550","usgsCitation":"Pelz-Serrano, K., Munguia-Vega, A., Piaggio, A., Neubaum, M., Munclinger, P., PArtl, A., van Riper, C., and Culver, M., 2009, Development of nine new microsatellite loci for the American beaver, Castor canadensis (Rodentia: Castoridae), and cross-species amplification in the European beaver, Castor fiber: Molecular Ecology Resources, v. 9, no. 2, p. 551-554, https://doi.org/10.1111/j.1755-0998.2008.02364.x.","startPage":"551","endPage":"554","numberOfPages":"4","costCenters":[],"links":[{"id":241391,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213735,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1755-0998.2008.02364.x"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationDate":"2009-02-12","publicationStatus":"PW","scienceBaseUri":"505a005de4b0c8380cd4f711","contributors":{"authors":[{"text":"Pelz-Serrano, K.","contributorId":104715,"corporation":false,"usgs":true,"family":"Pelz-Serrano","given":"K.","email":"","affiliations":[],"preferred":false,"id":437622,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Munguia-Vega, A.","contributorId":103091,"corporation":false,"usgs":true,"family":"Munguia-Vega","given":"A.","affiliations":[{"id":27043,"text":"University of Arizona, School of Natural Resources and the Environment.","active":true,"usgs":false},{"id":127,"text":"Arizona Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":437621,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Piaggio, A.J.","contributorId":17953,"corporation":false,"usgs":true,"family":"Piaggio","given":"A.J.","affiliations":[],"preferred":false,"id":437615,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Neubaum, M.","contributorId":47178,"corporation":false,"usgs":true,"family":"Neubaum","given":"M.","email":"","affiliations":[],"preferred":false,"id":437617,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Munclinger, P.","contributorId":35132,"corporation":false,"usgs":true,"family":"Munclinger","given":"P.","email":"","affiliations":[],"preferred":false,"id":437616,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"PArtl, A.","contributorId":94508,"corporation":false,"usgs":true,"family":"PArtl","given":"A.","email":"","affiliations":[],"preferred":false,"id":437620,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"van Riper, Charles III 0000-0003-1084-5843 charles_van_riper@usgs.gov","orcid":"https://orcid.org/0000-0003-1084-5843","contributorId":169488,"corporation":false,"usgs":true,"family":"van Riper","given":"Charles","suffix":"III","email":"charles_van_riper@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":false,"id":437618,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Culver, M.","contributorId":92462,"corporation":false,"usgs":true,"family":"Culver","given":"M.","email":"","affiliations":[],"preferred":false,"id":437619,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70033126,"text":"70033126 - 2009 - Flower power: Tree flowering phenology as a settlement cue for migrating birds","interactions":[],"lastModifiedDate":"2017-11-25T14:17:31","indexId":"70033126","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2158,"text":"Journal of Animal Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Flower power: Tree flowering phenology as a settlement cue for migrating birds","docAbstract":"1. Neotropical migrant birds show a clear preference for stopover habitats with ample food supplies; yet, the proximate cues underlying these decisions remain unclear. 2. For insectivorous migrants, cues associated with vegetative phenology (e.g. flowering, leaf flush, and leaf loss) may reliably predict the availability of herbivorous arthropods. Here we examined whether migrants use the phenology of five tree species to choose stopover locations, and whether phenology accurately predicts food availability. 3. Using a combination of experimental and observational evidence, we show migrant populations closely track tree phenology, particularly the flowering phenology of honey mesquite (Prosopis glandulosa), and preferentially forage in trees with more flowers. Furthermore, the flowering phenology of honey mesquite reliably predicts overall arthropod abundance as well as the arthropods preferred by migrants for food. 4. Together, these results suggest that honey mesquite flowering phenology is an important cue used by migrants to assess food availability quickly and reliably, while in transit during spring migration. ?? 2008 The Authors.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Animal Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-2656.2008.01464.x","issn":"00218","usgsCitation":"McGrath, L., van Riper, C., and Fontaine, J., 2009, Flower power: Tree flowering phenology as a settlement cue for migrating birds: Journal of Animal Ecology, v. 78, no. 1, p. 22-30, https://doi.org/10.1111/j.1365-2656.2008.01464.x.","startPage":"22","endPage":"30","numberOfPages":"9","costCenters":[],"links":[{"id":240851,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213245,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2656.2008.01464.x"}],"volume":"78","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-12-11","publicationStatus":"PW","scienceBaseUri":"505a125fe4b0c8380cd542a1","contributors":{"authors":[{"text":"McGrath, L.J.","contributorId":92493,"corporation":false,"usgs":true,"family":"McGrath","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":439479,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"van Riper, Charles III 0000-0003-1084-5843 charles_van_riper@usgs.gov","orcid":"https://orcid.org/0000-0003-1084-5843","contributorId":169488,"corporation":false,"usgs":true,"family":"van Riper","given":"Charles","suffix":"III","email":"charles_van_riper@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":false,"id":439478,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fontaine, J.J.","contributorId":37940,"corporation":false,"usgs":true,"family":"Fontaine","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":439477,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033128,"text":"70033128 - 2009 - Calibration of an estuarine sediment transport model to sediment fluxes as an intermediate step for simulation of geomorphic evolution","interactions":[],"lastModifiedDate":"2018-09-18T09:52:45","indexId":"70033128","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Calibration of an estuarine sediment transport model to sediment fluxes as an intermediate step for simulation of geomorphic evolution","docAbstract":"Modeling geomorphic evolution in estuaries is necessary to model the fate of legacy contaminants in the bed sediment and the effect of climate change, watershed alterations, sea level rise, construction projects, and restoration efforts. Coupled hydrodynamic and sediment transport models used for this purpose typically are calibrated to water level, currents, and/or suspended-sediment concentrations. However, small errors in these tidal-timescale models can accumulate to cause major errors in geomorphic evolution, which may not be obvious. Here we present an intermediate step towards simulating decadal-timescale geomorphic change: calibration to estimated sediment fluxes (mass/time) at two cross-sections within an estuary. Accurate representation of sediment fluxes gives confidence in representation of sediment supply to and from the estuary during those periods. Several years of sediment flux data are available for the landward and seaward boundaries of Suisun Bay, California, the landward-most embayment of San Francisco Bay. Sediment flux observations suggest that episodic freshwater flows export sediment from Suisun Bay, while gravitational circulation during the dry season imports sediment from seaward sources. The Regional Oceanic Modeling System (ROMS), a three-dimensional coupled hydrodynamic/sediment transport model, was adapted for Suisun Bay, for the purposes of hindcasting 19th and 20th century bathymetric change, and simulating geomorphic response to sea level rise and climatic variability in the 21st century. The sediment transport parameters were calibrated using the sediment flux data from 1997 (a relatively wet year) and 2004 (a relatively dry year). The remaining years of data (1998, 2002, 2003) were used for validation. The model represents the inter-annual and annual sediment flux variability, while net sediment import/export is accurately modeled for three of the five years. The use of sediment flux data for calibrating an estuarine geomorphic model guarantees that modeled geomorphic evolution will not exceed the actual supply of sediment from the watershed and seaward sources during the calibration period. Decadal trends in sediment supply (and therefore fluxes) can accumulate to alter decadal geomorphic change. Therefore, simulations of future geomorphic evolution are bolstered by this intermediate calibration step.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csr.2007.09.005","issn":"02784","usgsCitation":"Ganju, N., and Schoellhamer, D., 2009, Calibration of an estuarine sediment transport model to sediment fluxes as an intermediate step for simulation of geomorphic evolution: Continental Shelf Research, v. 29, no. 1, p. 148-158, https://doi.org/10.1016/j.csr.2007.09.005.","startPage":"148","endPage":"158","numberOfPages":"11","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":240887,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213277,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csr.2007.09.005"}],"volume":"29","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f316e4b0c8380cd4b5be","contributors":{"authors":[{"text":"Ganju, N. K. 0000-0002-1096-0465","orcid":"https://orcid.org/0000-0002-1096-0465","contributorId":64782,"corporation":false,"usgs":true,"family":"Ganju","given":"N. K.","affiliations":[],"preferred":false,"id":439488,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoellhamer, D. H. 0000-0001-9488-7340","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":85624,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"D. H.","affiliations":[],"preferred":false,"id":439489,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}