We present and analyze a chemical dataset that includes the concentrations and fluxes of HCO3−, SO42−, Cl−, and F− in the major rivers draining Yellowstone National Park (YNP) for the 2002–2004 water years (1 October 2001 – 30 September 2004). The total (molar) flux in all rivers decreases in the following order, HCO3− > Cl− > SO42− > F−, but each river is characterized by a distinct chemical composition, implying large-scale spatial heterogeneity in the inputs of the various solutes. The data also display non-uniform temporal trends; whereas solute concentrations and fluxes are nearly constant during base-flow conditions, concentrations decrease, solute fluxes increase, and HCO3−/Cl−, and SO42−/Cl−increase during the late-spring high-flow period. HCO3−/SO42− decreases with increasing discharge in the Madison and Falls Rivers, but increases with discharge in the Yellowstone and Snake Rivers. The non-linear relations between solute concentrations and river discharge and the change in anion ratios associated with spring runoff are explained by mixing between two components: (1) a component that is discharged during base-flow conditions and (2) a component associated with snow–melt runoff characterized by higher HCO3−/Cl− and SO42−/Cl−. The fraction of the second component is greater in the Yellowstone and Snake Rivers, which host lakes in their drainage basins and where a large fraction of the solute flux follows thaw of ice cover in the spring months. Although the total river HCO3− flux is larger than the flux of other solutes (HCO3−/Cl− ≈ 3), the CO2 equivalent flux is only ∼ 1% of the estimated emission of magmatic CO2 soil emissions from Yellowstone. No anomalous solute flux in response to perturbations in the hydrothermal system was observed, possibly because gage locations are too distant from areas of disturbance, or because of the relatively low sampling frequency. In order to detect changes in river hydrothermal solute fluxes, sampling at higher frequencies with better spatial coverage would be required. Our analysis also suggests that it might be more feasible to detect large-scale heating or cooling of the hydrothermal system by tracking changes in gas and steam flux than by tracking changes in river solute flux.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jvolgeores.2007.01.003","issn":"03770273","usgsCitation":"Hurwitz, S., Lowenstern, J.B., and Heasler, H., 2007, Spatial and temporal geochemical trends in the hydrothermal system of Yellowstone National Park: Inferences from river solute fluxes: Journal of Volcanology and Geothermal Research, v. 162, no. 3-4, p. 149-171, https://doi.org/10.1016/j.jvolgeores.2007.01.003.","productDescription":"23 p.","startPage":"149","endPage":"171","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":240611,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"162","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9439e4b08c986b31a944","contributors":{"authors":[{"text":"Hurwitz, Shaul 0000-0001-5142-6886 shaulh@usgs.gov","orcid":"https://orcid.org/0000-0001-5142-6886","contributorId":2169,"corporation":false,"usgs":true,"family":"Hurwitz","given":"Shaul","email":"shaulh@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":424121,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lowenstern, Jacob B. 0000-0003-0464-7779 jlwnstrn@usgs.gov","orcid":"https://orcid.org/0000-0003-0464-7779","contributorId":2755,"corporation":false,"usgs":true,"family":"Lowenstern","given":"Jacob","email":"jlwnstrn@usgs.gov","middleInitial":"B.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":424119,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heasler, Henry","contributorId":62683,"corporation":false,"usgs":true,"family":"Heasler","given":"Henry","affiliations":[],"preferred":false,"id":424120,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029750,"text":"70029750 - 2007 - Role of chemotaxis in the transport of bacteria through saturated porous media","interactions":[],"lastModifiedDate":"2018-10-17T11:27:44","indexId":"70029750","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":664,"text":"Advances in Water Resources","active":true,"publicationSubtype":{"id":10}},"title":"Role of chemotaxis in the transport of bacteria through saturated porous media","docAbstract":"Populations of chemotactic bacteria are able to sense and respond to chemical gradients in their surroundings and direct their migration toward increasing concentrations of chemicals that they perceive to be beneficial to their survival. It has been suggested that this phenomenon may facilitate bioremediation processes by bringing bacteria into closer proximity to the chemical contaminants that they degrade. To determine the significance of chemotaxis in these processes it is necessary to quantify the magnitude of the response and compare it to other groundwater processes that affect the fate and transport of bacteria. We present a systematic approach toward quantifying the chemotactic response of bacteria in laboratory scale experiments by starting with simple, well-defined systems and gradually increasing their complexity. Swimming properties of individual cells were assessed from trajectories recorded by a tracking microscope. These properties were used to calculate motility and chemotaxis coefficients of bacterial populations in bulk aqueous media which were compared to experimental results of diffusion studies. Then effective values of motility and chemotaxis coefficients in single pores, pore networks and packed columns were analyzed. These were used to estimate the magnitude of the chemotactic response in porous media and to compare with dispersion coefficients reported in the field. This represents a compilation of many studies over a number of years. While there are certainly limitations with this approach for ultimately quantifying motility and chemotaxis in granular aquifer media, it does provide insight into what order of magnitude responses are possible and which characteristics of the bacteria and media are expected to be important.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Water Resources","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.advwatres.2006.05.019","issn":"03091708","usgsCitation":"Ford, R., and Harvey, R.W., 2007, Role of chemotaxis in the transport of bacteria through saturated porous media: Advances in Water Resources, v. 30, no. 6-7, p. 1608-1617, https://doi.org/10.1016/j.advwatres.2006.05.019.","productDescription":"10 p.","startPage":"1608","endPage":"1617","numberOfPages":"10","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":213030,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.advwatres.2006.05.019"},{"id":240610,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"6-7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aae49e4b0c8380cd87072","contributors":{"authors":[{"text":"Ford, R.M.","contributorId":95689,"corporation":false,"usgs":true,"family":"Ford","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":424118,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":424117,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029749,"text":"70029749 - 2007 - Holocene slip rate for the western segment of the Castle Mountain fault, Alaska","interactions":[],"lastModifiedDate":"2018-05-20T16:57:33","indexId":"70029749","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Holocene slip rate for the western segment of the Castle Mountain fault, Alaska","docAbstract":"The western segment of the Castle Mountain fault poses a significant seismic hazard to the most populated region of south-central Alaska. We identify a previously unrecognized margin of a postglacial outwash channel that is offset right laterally 36 ± 4 m across the western segment of the Castle Mountain fault. This offset occurred after glaciers withdrew from the lowland 11,300–15,380 cal yr b.p. and after outwash channel margins were cut and stabilized 11,210–13,470 cal yr b.p. Using these ages and the measured separation, we obtain a maximum slip rate of 3.0 ± 0.6 mm yr−1 and a minimum slip rate of 2.8 ± 0.7 mm yr−1. These are the first lateral slip rates for the Castle Mountain fault established by a field measurement. Based on timing of the most recent earthquake, 670 ± 60 yr b.p., the Castle Mountain fault could have accumulated an average single-event slip of about 1.9 m (extremes range from 1.3 to 2.6 m). The fault consists of two segments; a surface-rupturing earthquake likely will be limited to the 62-km-long western segment. Area-magnitude regression calculations suggest that such an earthquake on the western Castle Mountain fault would have a moment magnitude of 6.9 to 7.3.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120060109","issn":"00371106","usgsCitation":"Willis, J., Haeussler, P.J., Bruhn, R., and Willis, G., 2007, Holocene slip rate for the western segment of the Castle Mountain fault, Alaska: Bulletin of the Seismological Society of America, v. 97, no. 3, p. 1019-1024, https://doi.org/10.1785/0120060109.","productDescription":"6 p.","startPage":"1019","endPage":"1024","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":240578,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212999,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060109"}],"volume":"97","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a31f4e4b0c8380cd5e3b9","contributors":{"authors":[{"text":"Willis, J.B.","contributorId":21620,"corporation":false,"usgs":true,"family":"Willis","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":424114,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haeussler, Peter J. 0000-0002-1503-6247 pheuslr@usgs.gov","orcid":"https://orcid.org/0000-0002-1503-6247","contributorId":503,"corporation":false,"usgs":true,"family":"Haeussler","given":"Peter","email":"pheuslr@usgs.gov","middleInitial":"J.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":424116,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bruhn, R.L.","contributorId":46972,"corporation":false,"usgs":true,"family":"Bruhn","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":424115,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Willis, G.C.","contributorId":18923,"corporation":false,"usgs":true,"family":"Willis","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":424113,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029748,"text":"70029748 - 2007 - Walleye consumption and long-term population trends following gizzard shad introduction into a Western South Dakota reservoir","interactions":[],"lastModifiedDate":"2021-06-02T19:11:33.776878","indexId":"70029748","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2299,"text":"Journal of Freshwater Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Walleye consumption and long-term population trends following gizzard shad introduction into a Western South Dakota reservoir","docAbstract":"The gizzard shad (Dorosoma cepedianum) was introduced into 1,955-ha Angostura Reservoir, South Dakota to provide increased prey resources for walleye (Sander vitreus). Linear correlation analysis indicated that following gizzard shad introduction, walleye catch-per-unit-effort and mean length at age have increased over time (r = 0.68 to 0.85, P = 0.02 to 0.001). Walleye stomach contents were collected monthly from April through September, 2004 to determine the extent to which age-0 gizzard shad were being utilized as prey during the growing season. Age-0 gizzard shad were absent from walleye diets from April to mid-July (pre-shad-available period); however, from mid-July through early September (shad-available period), age-0 gizzard shad were an important prey item in all walleye diets. Mean weight decreased for walleyes of ages 2-5 during the spring, before age-0 gizzard shad became available; however, growth rate of walleyes increased appreciably during the shad-available period and was attributable to consumption of age-0 shad prey. In Angostura Reservoir, which lies at the northwestern edge of the gizzard shad range, walleye population characteristics have improved following shad introduction and during 2004, age-0 shad directly affected walleye feeding and growth.
","language":"English","publisher":"Taylor & Francis Online","doi":"10.1080/02705060.2007.9665056","usgsCitation":"Ward, M., Willis, D., Miller, B., and Chipps, S., 2007, Walleye consumption and long-term population trends following gizzard shad introduction into a Western South Dakota reservoir: Journal of Freshwater Ecology, v. 22, no. 2, p. 339-345, https://doi.org/10.1080/02705060.2007.9665056.","productDescription":"8 p.","startPage":"339","endPage":"345","costCenters":[{"id":561,"text":"South Dakota Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"links":[{"id":487773,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/02705060.2007.9665056","text":"Publisher Index Page"},{"id":240577,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -104.095458984375,\n 42.99661231842139\n ],\n [\n -102.568359375,\n 42.99661231842139\n ],\n [\n -102.568359375,\n 44.008620115415354\n ],\n [\n -104.095458984375,\n 44.008620115415354\n ],\n [\n -104.095458984375,\n 42.99661231842139\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"22","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc3bfe4b08c986b32b36f","contributors":{"authors":[{"text":"Ward, M.J.","contributorId":11005,"corporation":false,"usgs":true,"family":"Ward","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":424109,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willis, D.W.","contributorId":56179,"corporation":false,"usgs":true,"family":"Willis","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":424111,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, B.H.","contributorId":102546,"corporation":false,"usgs":true,"family":"Miller","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":424112,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chipps, S. R. 0000-0001-6511-7582","orcid":"https://orcid.org/0000-0001-6511-7582","contributorId":40369,"corporation":false,"usgs":true,"family":"Chipps","given":"S. R.","affiliations":[],"preferred":false,"id":424110,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029720,"text":"70029720 - 2007 - Modern benthic ostracodes from Lutzow-Holm Bay, East Antarctica: paleoceanographic, paleobiogeographic, and evolutionary significance","interactions":[],"lastModifiedDate":"2015-04-06T10:52:22","indexId":"70029720","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2735,"text":"Micropaleontology","active":true,"publicationSubtype":{"id":10}},"title":"Modern benthic ostracodes from Lutzow-Holm Bay, East Antarctica: paleoceanographic, paleobiogeographic, and evolutionary significance","docAbstract":"Seventy-three ostracode species from 38 genera were recovered from the 55 surface sediment samples in Lützow-Holm Bay, northeastern Antarctica. We investigated bathymetric and geographic distributions of modern benthic ostracode species in the bay and compared this fauna with published modern and fossil ostracode data of Antarctic and southern South American regions. The results show: (1) Four biotopes and three sub-biotopes are recognized based on Q-mode cluster analysis, which suggest distributions of modern ostracodes are mainly controlled by water-mass structure, ice scouring, and light availability. (2) Comparison between the Lützow-Holm Bay fauna and other ostracode faunas from Antarctica and southern South America shows high endemism and homogeneity of Antarctic ostracode fauna, suggesting in situ evolution of most extant Antarctic species. (3) Most species are endemic to the Antarctica, a few species also inhabit South American waters.
","language":"English","publisher":"Micropaleontology Project","doi":"10.2113/gsmicropal.53.6.469","issn":"00262803","usgsCitation":"Yasuhara, M., Kato, M., Ikeya, N., and Seto, K., 2007, Modern benthic ostracodes from Lutzow-Holm Bay, East Antarctica: paleoceanographic, paleobiogeographic, and evolutionary significance: Micropaleontology, v. 53, no. 6, p. 469-496, https://doi.org/10.2113/gsmicropal.53.6.469.","productDescription":"28 p.","startPage":"469","endPage":"496","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":240169,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":268483,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gsmicropal.53.6.469"}],"otherGeospatial":"Lutzow-Holm Bay, Antarctica","volume":"53","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-08-10","publicationStatus":"PW","scienceBaseUri":"505a5c91e4b0c8380cd6fdb2","contributors":{"authors":[{"text":"Yasuhara, Moriaki","contributorId":37935,"corporation":false,"usgs":true,"family":"Yasuhara","given":"Moriaki","affiliations":[],"preferred":false,"id":423994,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kato, Masako","contributorId":25105,"corporation":false,"usgs":false,"family":"Kato","given":"Masako","email":"","affiliations":[],"preferred":false,"id":423993,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ikeya, Noriyuki","contributorId":101026,"corporation":false,"usgs":true,"family":"Ikeya","given":"Noriyuki","email":"","affiliations":[],"preferred":false,"id":423996,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Seto, Koji","contributorId":93689,"corporation":false,"usgs":true,"family":"Seto","given":"Koji","email":"","affiliations":[],"preferred":false,"id":423995,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029718,"text":"70029718 - 2007 - Comparison of the dust distributions in the innermost comae of comets-1P/Halley and 19P/Borrelly spacecraft observations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029718","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3083,"text":"Planetary and Space Science","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of the dust distributions in the innermost comae of comets-1P/Halley and 19P/Borrelly spacecraft observations","docAbstract":"We present a comparative study of the inner comae of comets 1P/Halley and 19P/Borrelly using data from the Halley Multicolour Camera (HMC) onboard Giotto and the Miniature Integrated Camera and Spectrometer onboard Deep Space 1 (DS1). We show that the dust brightness dependence as a function of radial distance is different for both comets. We suggest that optical depth or fragmentation effects dominate the brightness distribution at comet 1P/Halley whereas acceleration or non-point source geometry effects dominate at comet 19P/Borrelly. The nightside profiles of comet 19P/Borrelly suggest a continuing non-radial outflow from the nucleus out to several tens of kilometres. This modifies the observed dayside to nightside brightness ratio with distance and offers a further constraint on dust emission models. By setting up a linear system of equations to fit the dust intensity distribution, better fits could be obtained by incorporating acceleration into the equation of free-radial outflow. Finally, we estimate the dust production rate of 19P/Borrelly at the time of DS1 encounter as no higher than 324 kg/s based on comparisons with HMC intensity measurements. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Planetary and Space Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.pss.2006.12.004","issn":"00320633","usgsCitation":"Ho, T., Thomas, N., Boice, D.C., Combi, M., Soderblom, L., and Tenishev, V., 2007, Comparison of the dust distributions in the innermost comae of comets-1P/Halley and 19P/Borrelly spacecraft observations: Planetary and Space Science, v. 55, no. 7-8, p. 974-985, https://doi.org/10.1016/j.pss.2006.12.004.","startPage":"974","endPage":"985","numberOfPages":"12","costCenters":[],"links":[{"id":212648,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.pss.2006.12.004"},{"id":240167,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"55","issue":"7-8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f89ae4b0c8380cd4d1f7","contributors":{"authors":[{"text":"Ho, T.-M.","contributorId":101434,"corporation":false,"usgs":true,"family":"Ho","given":"T.-M.","email":"","affiliations":[],"preferred":false,"id":423989,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thomas, N.","contributorId":72490,"corporation":false,"usgs":true,"family":"Thomas","given":"N.","email":"","affiliations":[],"preferred":false,"id":423988,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Boice, D. C.","contributorId":103043,"corporation":false,"usgs":false,"family":"Boice","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":423990,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Combi, M.","contributorId":43171,"corporation":false,"usgs":true,"family":"Combi","given":"M.","email":"","affiliations":[],"preferred":false,"id":423987,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Soderblom, L.A. 0000-0002-0917-853X","orcid":"https://orcid.org/0000-0002-0917-853X","contributorId":6139,"corporation":false,"usgs":true,"family":"Soderblom","given":"L.A.","affiliations":[],"preferred":false,"id":423985,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tenishev, V.","contributorId":23337,"corporation":false,"usgs":true,"family":"Tenishev","given":"V.","email":"","affiliations":[],"preferred":false,"id":423986,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70029716,"text":"70029716 - 2007 - Post-den emergence behavior of polar bears (Ursus maritimus) in Northern Alaska","interactions":[],"lastModifiedDate":"2016-05-31T13:51:47","indexId":"70029716","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":894,"text":"Arctic","active":true,"publicationSubtype":{"id":10}},"title":"Post-den emergence behavior of polar bears (Ursus maritimus) in Northern Alaska","docAbstract":"We observed polar bear (Ursus maritimus) maternity den sites on Alaska’s North Slope in March 2002 and 2003 in an effort to describe bears’ post-den emergence behavior. During 40 sessions spanning 459 h, we observed 8 adults and 14 dependent cubs outside dens for 37.5 h (8.2% of total observation time). There was no significant difference between den emergence dates in 2002 (mean = 15 Mar ± 4.1 d) and 2003 (mean = 21 Mar ± 2.1 d). Following initial den breakout, polar bears remained at their den sites for 1.5 to 14 days (mean = 8.1 ± 5.1 d). The average length of stay in dens between emergent periods was significantly shorter in 2002 (1.79 h) than in 2003 (4.82 h). While outside, adult bears were inactive 49.5% of the time, whereas cubs were inactive 13.4% of the time. We found no significant relationships between den emergence activity and weather. Adult polar bears at den sites subjected to industrial activity exhibited significantly fewer bouts of vigilance than denned bears in undisturbed areas (t = -5.5164, df = 4, p= 0.00). However, the duration of vigilance behaviors at sites near industrial activity was not significantly shorter than at the other sites studied (t = -1.8902, df = 4, p = 0.07). Results for these bears were within the range of findings in other studies of denned polar bears.
","language":"English","publisher":"Arctic Institute of North America","doi":"10.14430/arctic243","issn":"00040843","usgsCitation":"Smith, T.S., Partridge, S.T., Amstrup, S.C., and Schliebe, S., 2007, Post-den emergence behavior of polar bears (Ursus maritimus) in Northern Alaska: Arctic, v. 60, no. 2, p. 187-194, https://doi.org/10.14430/arctic243.","productDescription":"8 p.","startPage":"187","endPage":"194","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":476984,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.4771","text":"External Repository"},{"id":240672,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"2","noUsgsAuthors":false,"publicationDate":"2009-12-11","publicationStatus":"PW","scienceBaseUri":"505a7e5ee4b0c8380cd7a4d0","contributors":{"authors":[{"text":"Smith, T. S.","contributorId":47326,"corporation":false,"usgs":true,"family":"Smith","given":"T.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":423978,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Partridge, Steven T.","contributorId":56014,"corporation":false,"usgs":true,"family":"Partridge","given":"Steven","email":"","middleInitial":"T.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":false,"id":423979,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Amstrup, Steven C.","contributorId":67034,"corporation":false,"usgs":false,"family":"Amstrup","given":"Steven","email":"","middleInitial":"C.","affiliations":[{"id":13182,"text":"Polar Bears International","active":true,"usgs":false}],"preferred":false,"id":423980,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schliebe, S.","contributorId":27818,"corporation":false,"usgs":true,"family":"Schliebe","given":"S.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":423977,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029715,"text":"70029715 - 2007 - A method for improving predictions of bed-load discharges to reservoirs","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70029715","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2594,"text":"Lakes and Reservoirs: Research and Management","active":true,"publicationSubtype":{"id":10}},"title":"A method for improving predictions of bed-load discharges to reservoirs","docAbstract":"Effective management options for mitigating the loss of reservoir water storage capacity to sedimentation depend on improved predictions of bed-load discharges into the reservoirs. Most predictions of bed-load discharges, however, are based on the assumption that the rates of bed-load sediment availability equal the transport capacity of the flow, ignoring the spatio-temporal variability of the sediment supply. This paper develops a semiquantitative method to characterize bed-load sediment transport in alluvial channels, assuming a channel reach is non-supply limited when the bed-load discharge of a given sediment particle-size class is functionally related to the energy that is available to transport that fraction of the total bed-load. The method was applied to 22 alluvial stream channels in the USA to determine whether a channel reach had a supply-limited or non-supply-limited bed-load transport regime. The non-supply-limited transport regime was further subdivided into two groups on the basis of statistical tests. The results indicated the pattern of bed-load sediment transport in alluvial channels depends on the complete spectrum of sediment particle sizes available for transport rather than individual particle-size fractions represented by one characteristic particle size. The application of the method developed in this paper should assist reservoir managers in selecting bed-load sediment transport equations to improve predictions of bed-load discharge in alluvial streams, thereby significantly increasing the efficiency of management options for maintaining the storage capacity of waterbodies. ?? 2007 Blackwell Publishing Asia Pty Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Lakes and Reservoirs: Research and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1440-1770.2007.00324.x","issn":"13205331","usgsCitation":"Lopes, V., Osterkamp, W.R., and Bravo-Espinosa, M., 2007, A method for improving predictions of bed-load discharges to reservoirs: Lakes and Reservoirs: Research and Management, v. 12, no. 2, p. 59-72, https://doi.org/10.1111/j.1440-1770.2007.00324.x.","startPage":"59","endPage":"72","numberOfPages":"14","costCenters":[],"links":[{"id":213058,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1440-1770.2007.00324.x"},{"id":240642,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-07-04","publicationStatus":"PW","scienceBaseUri":"5059e453e4b0c8380cd465a7","contributors":{"authors":[{"text":"Lopes, V.L.","contributorId":84963,"corporation":false,"usgs":true,"family":"Lopes","given":"V.L.","email":"","affiliations":[],"preferred":false,"id":423976,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Osterkamp, W. R.","contributorId":46044,"corporation":false,"usgs":true,"family":"Osterkamp","given":"W.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":423975,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bravo-Espinosa, M.","contributorId":31561,"corporation":false,"usgs":true,"family":"Bravo-Espinosa","given":"M.","email":"","affiliations":[],"preferred":false,"id":423974,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029714,"text":"70029714 - 2007 - Correcting acoustic Doppler current profiler discharge measurement bias from moving-bed conditions without global positioning during the 2004 Glen Canyon Dam controlled flood on the Colorado River","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70029714","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2622,"text":"Limnology and Oceanography: Methods","active":true,"publicationSubtype":{"id":10}},"title":"Correcting acoustic Doppler current profiler discharge measurement bias from moving-bed conditions without global positioning during the 2004 Glen Canyon Dam controlled flood on the Colorado River","docAbstract":"Discharge measurements were made by acoustic Doppler current profiler at two locations on the Colorado River during the 2004 controlled flood from Glen Canyon Dam, Arizona. Measurement hardware and software have constantly improved from the 1980s such that discharge measurements by acoustic profiling instruments are now routinely made over a wide range of hydrologic conditions. However, measurements made with instruments deployed from moving boats require reliable boat velocity data for accurate measurements of discharge. This is normally accomplished by using special acoustic bottom track pings that sense instrument motion over bottom. While this method is suitable for most conditions, high current flows that produce downstream bed sediment movement create a condition known as moving bed that will bias velocities and discharge to lower than actual values. When this situation exists, one solution is to determine boat velocity with satellite positioning information. Another solution is to use a lower frequency instrument. Discharge measurements made during the 2004 Glen Canyon controlled flood were subject to moving-bed conditions and frequent loss of bottom track. Due to site conditions and equipment availability, the measurements were conducted without benefit of external positioning information or lower frequency instruments. This paper documents and evaluates several techniques used to correct the resulting underestimated discharge measurements. One technique produces discharge values in good agreement with estimates from numerical model and measured hydrographs during the flood. ?? 2007, by the American Society of Limnology and Oceanography, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Limnology and Oceanography: Methods","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"15415856","usgsCitation":"Gartner, J.W., and Ganju, N., 2007, Correcting acoustic Doppler current profiler discharge measurement bias from moving-bed conditions without global positioning during the 2004 Glen Canyon Dam controlled flood on the Colorado River: Limnology and Oceanography: Methods, v. 5, no. JUN, p. 156-162.","startPage":"156","endPage":"162","numberOfPages":"7","costCenters":[],"links":[{"id":240641,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"JUN","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc1ee4b0c8380cd4e11d","contributors":{"authors":[{"text":"Gartner, J. W.","contributorId":81903,"corporation":false,"usgs":false,"family":"Gartner","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":423973,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":423972,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029712,"text":"70029712 - 2007 - Nitrate dynamics within the Pajaro River, a nutrient-rich, losing stream","interactions":[],"lastModifiedDate":"2023-08-09T11:21:29.048891","indexId":"70029712","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2564,"text":"Journal of the North American Benthological Society","onlineIssn":"1937-237X","printIssn":"0887-3593","active":true,"publicationSubtype":{"id":10}},"title":"Nitrate dynamics within the Pajaro River, a nutrient-rich, losing stream","docAbstract":"The major ion chemistry of water from an 11.42-km reach of the Pajaro River, a losing stream in central coastal California, shows a consistent pattern of higher concentrations during the 2nd (dry) half of the water year. Most solutes are conserved during flow along the reach, but [NO3−] decreases by ~30% and is accompanied by net loss of channel discharge and extensive surface–subsurface exchange. The corresponding net NO3− uptake length is 37 ± 13 km (42 ± 12 km when normalized to the conservative solute Cl−), and the areal NO3− uptake rate is 0.5 μmol m−2 s−1. The observed reduction in [NO3−] along the reach results from one or more internal sinks, not dilution by ground water, hill-slope water, or other water inputs. Observed reductions in [NO3−] and channel discharge along the experimental reach result in a net loss of 200–400 kg/d of NO3−-N, ~50% of the input load. High-resolution (temporal and spatial) sampling indicates that most of the NO3− loss occurs along the lower part of the reach, where there is the greatest seepage loss and surface–subsurface exchange of water. Stable isotopes of NO3−, total dissolved P concentrations, and streambed chemical profiles suggest that denitrification is the most significant NO3− sink along the reach. Denitrification efficiency, as expressed through downstream enrichment in 15N-NO3−, varies considerably during the water year. When discharge is greater (typically earlier in the water year), denitrification is least efficient and downstream enrichment in 15N-NO3− is greatest. When discharge is lower, denitrification in the streambed appears to occur with greater efficiency, resulting in lower downstream enrichment in 15N-NO3−.
","language":"English","publisher":"University of Chicago Press","doi":"10.1899/0887-3593(2007)26[191:NDWTPR]2.0.CO;2","issn":"08873593","usgsCitation":"Ruehl, C., Fisher, A., Los, H.M., Wankel, S.D., Wheat, C., Kendall, C., Hatch, C., and Shennan, C., 2007, Nitrate dynamics within the Pajaro River, a nutrient-rich, losing stream: Journal of the North American Benthological Society, v. 26, no. 2, p. 191-206, https://doi.org/10.1899/0887-3593(2007)26[191:NDWTPR]2.0.CO;2.","productDescription":"16 p.","startPage":"191","endPage":"206","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240609,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Pajaro River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.98626284071494,\n 37.37078225360888\n ],\n [\n -122.98626284071494,\n 35.694360455569424\n ],\n [\n -119.69177791118913,\n 35.694360455569424\n ],\n [\n -119.69177791118913,\n 37.37078225360888\n ],\n [\n -122.98626284071494,\n 37.37078225360888\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a669ee4b0c8380cd72ea2","contributors":{"authors":[{"text":"Ruehl, C.R.","contributorId":30826,"corporation":false,"usgs":true,"family":"Ruehl","given":"C.R.","affiliations":[],"preferred":false,"id":423964,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, A.T.","contributorId":51528,"corporation":false,"usgs":true,"family":"Fisher","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":423966,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Los, Huertos M.","contributorId":92872,"corporation":false,"usgs":true,"family":"Los","given":"Huertos","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":423969,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wankel, Scott D.","contributorId":98076,"corporation":false,"usgs":true,"family":"Wankel","given":"Scott","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":423970,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wheat, C.G.","contributorId":59249,"corporation":false,"usgs":true,"family":"Wheat","given":"C.G.","email":"","affiliations":[],"preferred":false,"id":423967,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":423965,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hatch, C.E.","contributorId":11402,"corporation":false,"usgs":true,"family":"Hatch","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":423963,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Shennan, C.","contributorId":65671,"corporation":false,"usgs":true,"family":"Shennan","given":"C.","email":"","affiliations":[],"preferred":false,"id":423968,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70029710,"text":"70029710 - 2007 - Evidence for terrigenic SF6 in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating","interactions":[],"lastModifiedDate":"2018-10-16T09:55:18","indexId":"70029710","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Evidence for terrigenic SF6 in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating","docAbstract":"Measurements of the concentrations of dichlorodifluoromethane (CFC-12), tritium (3H), and sulfur hexafluoride (SF6) in groundwater from basaltic aquifers in Jeju Island, Korea, demonstrate a terrigenic source of SF6. Using a lumped-parameter dispersion model, groundwater was identified as young water (<15 years), old water with negligible CFC-12 and 3H, and binary mixtures of the two. Model calculations using dispersion models and binary mixing based on 3H and CFC-12 concentrations demonstrate a non-atmospheric excess of SF6 relative to CFC-12 and 3H concentrations for more than half of the samples. The non-atmospheric excess SF6 may have originated from terrigenic sources in relict volcanic fluids, which could have acquired SF6 from granites and basement rocks of the island during volcanic activity. Local excess anthropogenic sources of SF6 are unlikely. The SF6 age is biased young relative to the CFC-12 age, typically up to 20 years and as high as 30 years. This age bias is more pronounced in samples of groundwater older than 15 years. The presence of terrigenic SF6 can affect the entire dating range for groundwater in mixtures that contain a fraction of old water.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.03.011","issn":"00221694","usgsCitation":"Koh, D., Plummer, N., Busenberg, E., and Kim, Y., 2007, Evidence for terrigenic SF6 in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating: Journal of Hydrology, v. 339, no. 1-2, p. 93-104, https://doi.org/10.1016/j.jhydrol.2007.03.011.","productDescription":"12 p.","startPage":"93","endPage":"104","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240576,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212998,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.03.011"}],"country":"South Korea","otherGeospatial":"Jeju Island","volume":"339","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d54e4b0c8380cd52f5b","contributors":{"authors":[{"text":"Koh, Dong-Chan","contributorId":167733,"corporation":false,"usgs":false,"family":"Koh","given":"Dong-Chan","email":"","affiliations":[{"id":24820,"text":"Korea Institute of Geoscience and Mineral Resources","active":true,"usgs":false}],"preferred":false,"id":423955,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":423954,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":423953,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kim, Yongje","contributorId":203716,"corporation":false,"usgs":false,"family":"Kim","given":"Yongje","email":"","affiliations":[],"preferred":false,"id":423952,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029706,"text":"70029706 - 2007 - Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70029706","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA","docAbstract":"Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the basin and uplands along the eastern margin, are defined by mean annual precipitation that exceeds approximately 60 cm. A third recharge area coincides with the extensive irrigation canal system in the south central part of the basin. The stable isotope signature for Cascade Range groundwater falls near the global meteoric water line (GMWL). The stable isotope signature for the groundwater of the eastern basin uplands also falls near the GMWL, but is depleted in heavy isotopes relative to the Cascade Range groundwater. The stable isotope signature for water from the irrigation canal system deviates from the GMWL in a manner indicative of fractionation by evaporation. Groundwater provenance was previously unknown for two aquifers of interest: that supplying deep (225-792 m), large-capacity irrigation wells along the Oregon-California border, and that of the geothermal system near Klamath Falls. Groundwater produced by the deep irrigation wells along the Oregon-California border appears to be a mixture of eastern-basin groundwater and water with an evaporative isotopic signature. The component with an evaporative isotopic signature appears in some places to consist of infiltrated irrigation water. Chloride data suggest that much of the component with the evaporative isotopic signature may be coming from an adjacent subbasin. After accounting for the 18O shift common in geothermal waters, isotope data suggest that the geothermal groundwater in the upper Klamath Basin may emanate from the eastern basin uplands. Findings demonstrate that stable isotope and chloride data can illuminate certain details of a regional groundwater flow system in a complex geologic setting where other hydrologic data are ambiguous. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2006.12.008","issn":"00221694","usgsCitation":"Palmer, P., Gannett, M.W., and Hinkle, S., 2007, Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA: Journal of Hydrology, v. 336, no. 1-2, p. 17-29, https://doi.org/10.1016/j.jhydrol.2006.12.008.","startPage":"17","endPage":"29","numberOfPages":"13","costCenters":[],"links":[{"id":212943,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2006.12.008"},{"id":240512,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"336","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3f9be4b0c8380cd64661","contributors":{"authors":[{"text":"Palmer, P.C.","contributorId":86972,"corporation":false,"usgs":true,"family":"Palmer","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":423937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gannett, M. W.","contributorId":75569,"corporation":false,"usgs":true,"family":"Gannett","given":"M.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":423936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hinkle, S.R.","contributorId":74778,"corporation":false,"usgs":true,"family":"Hinkle","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":423935,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029705,"text":"70029705 - 2007 - Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA","interactions":[],"lastModifiedDate":"2016-08-17T11:54:12","indexId":"70029705","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA","docAbstract":"Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 °C during the 20th century, and that warming induced by increasing concentrations of greenhouse gases is likely to continue in the 21st century, accompanied by changes in the hydrologic cycle. Climate change has important implications in the Catskill region of southeastern New York State, because the region is a source of water supply for New York City. We used the non-parametric Mann–Kendall test to evaluate annual, monthly, and multi-month trends in air temperature, precipitation amount, stream runoff, and potential evapotranspiration (PET) in the region during 1952–2005 based on data from 9 temperature sites, 12 precipitation sites, and 8 stream gages. A general pattern of warming temperatures and increased precipitation, runoff, and PET is evident in the region. Regional annual mean air temperature increased significantly by 0.6 °C per 50 years during the period; the greatest increases and largest number of significant upward trends were in daily minimum air temperature. Daily maximum air temperature showed the greatest increase during February through April, whereas minimum air temperature showed the greatest increase during May through September. Regional mean precipitation increased significantly by 136 mm per 50 years, nearly double that of the regional mean increase in runoff, which was not significant. Regional mean PET increased significantly by 19 mm per 50 years, about one-seventh that of the increase in precipitation amount, and broadly consistent with increased runoff during 1952–2005, despite the lack of significance in the mean regional runoff trend. Peak snowmelt as approximated by the winter–spring center of volume of stream runoff generally shifted from early April at the beginning of the record to late March at the end of the record, consistent with a decreasing trend in April runoff and an increasing trend in maximum March air temperature. This change indicates an increased supply of water to reservoirs earlier in the year. Additionally, the supply of water to reservoirs at the beginning of winter is greater as indicated by the timing of the greatest increases in precipitation and runoff—both occurred during summer and fall. The future balance between changes in air temperature and changes in the timing and amount of precipitation in the region will have important implications for the available water supply in the region.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2006.12.019","issn":"00221694","usgsCitation":"Burns, D.A., Klaus, J., and McHale, M.R., 2007, Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA: Journal of Hydrology, v. 336, no. 1-2, p. 155-170, https://doi.org/10.1016/j.jhydrol.2006.12.019.","productDescription":"16 p.","startPage":"155","endPage":"170","numberOfPages":"16","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":240479,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Catskill region","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.3607177734375,\n 42.004407212963585\n ],\n [\n -75.3277587890625,\n 41.96357478222518\n ],\n [\n -75.26184082031249,\n 41.93088998442502\n ],\n [\n -75.2508544921875,\n 41.87774145109676\n ],\n [\n -75.1959228515625,\n 41.85319643776675\n ],\n [\n -75.157470703125,\n 41.84501267270692\n ],\n [\n -75.1080322265625,\n 41.832735062152615\n ],\n [\n -75.1025390625,\n 41.78769700539063\n ],\n [\n -75.047607421875,\n 41.73852846935917\n ],\n [\n -75.05859375,\n 41.66060124302088\n ],\n [\n -75.05859375,\n 41.60722821271717\n ],\n [\n -75.03662109375,\n 41.549700145132725\n ],\n [\n -74.9871826171875,\n 41.492120839687786\n ],\n [\n -74.937744140625,\n 41.47154438707647\n ],\n [\n -74.8883056640625,\n 41.45507852101139\n ],\n [\n -74.8388671875,\n 41.430371882652814\n ],\n [\n -74.77294921875,\n 41.42625319507272\n ],\n [\n -74.7344970703125,\n 41.413895564677304\n ],\n [\n -74.7015380859375,\n 41.372686481864655\n ],\n [\n -74.68505859374999,\n 41.35207214451295\n ],\n [\n -74.50927734375,\n 41.281934557995356\n ],\n [\n -74.3719482421875,\n 41.33970040774419\n ],\n [\n -74.102783203125,\n 41.430371882652814\n ],\n [\n -73.85009765625,\n 41.51680395810118\n ],\n [\n -73.7841796875,\n 41.590796851056005\n ],\n [\n -73.7017822265625,\n 41.70982942509964\n ],\n [\n -73.6468505859375,\n 41.83682786072714\n ],\n [\n -73.6138916015625,\n 42.04521345501039\n ],\n [\n -73.6688232421875,\n 42.313877566161864\n ],\n [\n -73.707275390625,\n 42.45588764197166\n ],\n [\n -73.7841796875,\n 42.742978093466434\n ],\n [\n -73.8885498046875,\n 42.867912483915305\n ],\n [\n -74.1522216796875,\n 42.93631775765237\n ],\n [\n -74.498291015625,\n 42.93631775765237\n ],\n [\n -74.86083984375,\n 42.93631775765237\n ],\n [\n -75.1409912109375,\n 42.81555136172695\n ],\n [\n -75.25634765625,\n 42.68243539838623\n ],\n [\n -75.35522460937499,\n 42.459940352216556\n ],\n [\n -75.3607177734375,\n 42.004407212963585\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"336","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a95f0e4b0c8380cd81d0b","contributors":{"authors":[{"text":"Burns, Douglas A. 0000-0001-6516-2869","orcid":"https://orcid.org/0000-0001-6516-2869","contributorId":29450,"corporation":false,"usgs":true,"family":"Burns","given":"Douglas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":423932,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaus, Julian","contributorId":173770,"corporation":false,"usgs":false,"family":"Klaus","given":"Julian","email":"","affiliations":[{"id":7107,"text":"Univ. of Freiburg, Germany","active":true,"usgs":false}],"preferred":false,"id":423934,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McHale, Michael R. 0000-0003-3780-1816 mmchale@usgs.gov","orcid":"https://orcid.org/0000-0003-3780-1816","contributorId":1735,"corporation":false,"usgs":true,"family":"McHale","given":"Michael","email":"mmchale@usgs.gov","middleInitial":"R.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":423933,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70033018,"text":"70033018 - 2007 - First report of Jefferson's ground sloth (Megalonyx jeffersonii) in North Dakota: Paleobiogeographical and paleoecological significance","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70033018","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"First report of Jefferson's ground sloth (Megalonyx jeffersonii) in North Dakota: Paleobiogeographical and paleoecological significance","docAbstract":"A well-preserved ungual of a pes documents the presence of Jefferson's ground sloth (Megalonyx jeffersonii) at the end of the Wisconsinan in North Dakota. This is the 1st report of M. jeffersonii in North Dakota, and one of few records from the upper Great Plains. An accelerator mass spectrometer radiocarbon age of 11,915 ?? 40 years ago was obtained from the specimen, suggesting that the sloth resided in North Dakota during the Rancholabrean Land Mammal Age, just before extinction of the species. Palynological records from sites near the sloth occurrence and of the same age indicate that it resided in a cool, moist, spruce-dominated forest habitat in a riparian setting along the Missouri River. Its presence in that setting corroborates the notion that Jefferson's ground sloth was a browsing inhabitant of gallery forests associated with rivers. It is likely that M. jeffersonii used river valleys, such as the Missouri River valley, as migration routes. ?? 2007 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/06-MAMM-A-132R1.1","issn":"00222372","usgsCitation":"Hoganson, J., and McDonald, H.G., 2007, First report of Jefferson's ground sloth (Megalonyx jeffersonii) in North Dakota: Paleobiogeographical and paleoecological significance: Journal of Mammalogy, v. 88, no. 1, p. 73-80, https://doi.org/10.1644/06-MAMM-A-132R1.1.","startPage":"73","endPage":"80","numberOfPages":"8","costCenters":[],"links":[{"id":476968,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1644/06-mamm-a-132r1.1","text":"Publisher Index Page"},{"id":213178,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/06-MAMM-A-132R1.1"},{"id":240777,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-02-28","publicationStatus":"PW","scienceBaseUri":"505a1066e4b0c8380cd53c5c","contributors":{"authors":[{"text":"Hoganson, J.W.","contributorId":100127,"corporation":false,"usgs":true,"family":"Hoganson","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":438995,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDonald, H. Gregory","contributorId":73385,"corporation":false,"usgs":true,"family":"McDonald","given":"H.","email":"","middleInitial":"Gregory","affiliations":[],"preferred":false,"id":438994,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033545,"text":"70033545 - 2007 - Effects of pitfall trap preservative on collections of carabid beetles (Coleoptera: Carabidae)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033545","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1855,"text":"Great Lakes Entomologist","active":true,"publicationSubtype":{"id":10}},"title":"Effects of pitfall trap preservative on collections of carabid beetles (Coleoptera: Carabidae)","docAbstract":"Effects of six pitfall trap preservatives (5% acetic acid solution, distilled water, 70% ethanol, 50% ethylene glycol solution, 50% propylene glycol solution, and 10% saline solution) on collections of carabid beetles (Coleoptera: Carabidae) were studied in a west-central Illinois deciduous forest from May to October 2005. A total of 819 carabids, representing 33 species and 19 genera, were collected. Saline produced significantly fewer captures than did acetic acid, ethanol, ethylene glycol, and propylene glycol, while distilled water produced significantly fewer captures than did acetic acid. Significant associations between numbers of captures and treatment were seen in four species: Amphasia interstitialis (Say), Calathus opaculus LeConte, Chlaenius nemoralis Say, and Cyclotrachelus sodalis (LeConte). Results of this study suggest that type of preservative used can have substantial effects on abundance and species composition of carabids collected in pitfall traps.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Great Lakes Entomologist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00900","usgsCitation":"McCravy, K., and Willand, J., 2007, Effects of pitfall trap preservative on collections of carabid beetles (Coleoptera: Carabidae): Great Lakes Entomologist, v. 40, no. 3-4, p. 154-165.","startPage":"154","endPage":"165","numberOfPages":"12","costCenters":[],"links":[{"id":242087,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0782e4b0c8380cd51720","contributors":{"authors":[{"text":"McCravy, K.W.","contributorId":90527,"corporation":false,"usgs":true,"family":"McCravy","given":"K.W.","email":"","affiliations":[],"preferred":false,"id":441386,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willand, J.E.","contributorId":60838,"corporation":false,"usgs":true,"family":"Willand","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":441385,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032730,"text":"70032730 - 2007 - Upper cretaceous microbial petroleum systems in north-central Montana","interactions":[],"lastModifiedDate":"2015-04-03T11:19:53","indexId":"70032730","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2789,"text":"Mountain Geologist","active":true,"publicationSubtype":{"id":10}},"title":"Upper cretaceous microbial petroleum systems in north-central Montana","docAbstract":"Cenomanian to Campanian rocks of north-central Montana contain shallow economic accumulations of dry natural gas derived from microbial methanogenesis. The methanogens utilized carbon dioxide derived from organic matter in the marginal marine sediments and hydrogen from in situ pore water to generate methane. The most recent USGS assessment of the shallow gas resources of eastern Montana used a petroleum systems approach, identifying the critical components of a petroleum system (source rock, reservoir rock, seal rock, and trap) and their temporal relationships. As a part of this effort, geochemical data from natural gas wells and associated formation waters were used to identify two microbial gas systems and the timing of methanogenesis.
\nTwo microbial gas families are identified in north-central Montana based on stable carbon isotope and gas composition. The Montana Group gas family has heavier δ13C methane values, slightly lighter δD methane values, and a lower carbon dioxide and nitrogen content than the Colorado Group gas family. The two gas families may reflect, in part, the source rock depositional environments, with the Colorado Group rocks representing a more offshore marine depositional environment and the Montana Group rocks representing proximal marine, deltaic and nonmarine depositional environments. Assuming the gas families reflect only source rock characteristics, two microbial petroleum systems can be defined. The first petroleum system, called the Colorado Group microbial gas system, consists of Colorado Group rocks with the shales in the Belle Fourche Formation, Greenhorn Formation, and the Carlile Shale as the presumed source rocks and the interbedded Phillips and Bowdoin sandstones and the Greenhorn Formation limestones as reservoirs. The second petroleum system, called the Montana Group microbial gas system, consists of the Montana Group rocks that include the Gammon Shale and possibly the Claggett Shale as source rocks and the Eagle Sandstone and the Judith River Formation as reservoirs. The Niobrara Formation is tentatively placed in the former system. The geographic extent of the two microbial systems is much larger than the study area and includes an area at least from the Alberta basin to the northwest to the Powder River basin to the southeast. Upper Cretaceous microbial gas accumulations have been recognized along these basin margins at burial depths less than 3000 ft, but have not been recognized within the deeper parts of the basins because subsequent charge of thermogenic oil and gas masks the preexisting microbial gas accumulations.
\nMethanogenesis began soon after the deposition (early-stage methanogenesis) of the Cenomanian to Campanian source sediments, and was either sustained or rejuvenated by episodic meteoric water influx until sometime in the Paleogene. Methanogenesis probably continued until CO2 and hydrogen were depleted or the pore size was compacted to below tolerance levels of the methanogens. The composition of the Montana and Colorado Group gases and coproduced formation water precludes a scenario of late-stage methanogenesis like the Antrim gas system in the Michigan basin. Some portion of the methane charge was originally dissolved in the pore waters, and subsequent reduction in hydrostatic pressure caused the methane to exsolve and migrate into local stratigraphic and structural traps. The critical moment of the microbial gas systems is this timing of exsolution rather than the time of generation (methanogenesis). Other studies suggest that the reduction in hydrostatic pressure may have been caused by multiple geologic events including the lowering of sea level in the Late Cretaceous, and subsequent uplift and erosion events, the youngest of which began about 5 Ma.
","language":"English","publisher":"Rocky Mountain Association of Geologists","publisherLocation":"Denver, CO","usgsCitation":"Lillis, P.G., 2007, Upper cretaceous microbial petroleum systems in north-central Montana: Mountain Geologist, v. 44, no. 1, p. 11-35.","productDescription":"25 p.","startPage":"11","endPage":"35","numberOfPages":"25","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":241566,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":299336,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://archives.datapages.com/data/mountain-geologist-rmag/data/044/044001/11_rmag-mg440011.htm"}],"country":"United States","state":"Montana","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.499755859375,\n 46.521075663842836\n ],\n [\n -113.499755859375,\n 49.009050809382046\n ],\n [\n -106.490478515625,\n 49.009050809382046\n ],\n [\n -106.490478515625,\n 46.521075663842836\n ],\n [\n -113.499755859375,\n 46.521075663842836\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"44","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbd50e4b08c986b328f6d","contributors":{"authors":[{"text":"Lillis, Paul G. 0000-0002-7508-1699 plillis@usgs.gov","orcid":"https://orcid.org/0000-0002-7508-1699","contributorId":1817,"corporation":false,"usgs":true,"family":"Lillis","given":"Paul","email":"plillis@usgs.gov","middleInitial":"G.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":437661,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70032732,"text":"70032732 - 2007 - Constraining 17O and 27Al NMR spectra of high-pressure crystals and glasses: New data for jadeite, pyrope, grossular, and mullite","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032732","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Constraining 17O and 27Al NMR spectra of high-pressure crystals and glasses: New data for jadeite, pyrope, grossular, and mullite","docAbstract":"The 17O NMR spectra of glasses quenched from melts at high pressure are often difficult to interpret due to overlapping peaks and lack of crystalline model compounds. High-pressure aluminosilicate glasses often contain significant amounts of [5]Al and [6]Al, thus these high-pressure glasses must contain oxygen bonded to high-coordinated aluminum. The 17O NMR parameters for the minerals jadeite, pyrope, grossular, and mullite are presented to assist interpretation of glass spectra and to help test quantum chemical calculations. The 17O NMR parameters for jadeite and grossular support previous peak assignments of oxygen bonded to Si and high-coordinated Al in high-pressure glasses as well as quantum chemical calculations. The oxygen tricluster in mullite is very similar to the previously observed tricluster in grossite (CaAl4 O7) and suspected triclusters in glasses. We also present 27Al NMR spectra for pyrope, grossular, and mullite.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2138/am.2007.2284","issn":"0003004X","usgsCitation":"Kelsey, K., Stebbins, J., Du, L., and Hankins, B., 2007, Constraining 17O and 27Al NMR spectra of high-pressure crystals and glasses: New data for jadeite, pyrope, grossular, and mullite: American Mineralogist, v. 92, no. 1, p. 210-216, https://doi.org/10.2138/am.2007.2284.","startPage":"210","endPage":"216","numberOfPages":"7","costCenters":[],"links":[{"id":213926,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2138/am.2007.2284"},{"id":241600,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa07e4b0c8380cd4d8aa","contributors":{"authors":[{"text":"Kelsey, K.E.","contributorId":71010,"corporation":false,"usgs":true,"family":"Kelsey","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":437666,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stebbins, J.F.","contributorId":58851,"corporation":false,"usgs":true,"family":"Stebbins","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":437665,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Du, L.-S.","contributorId":71396,"corporation":false,"usgs":true,"family":"Du","given":"L.-S.","email":"","affiliations":[],"preferred":false,"id":437667,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hankins, B.","contributorId":90945,"corporation":false,"usgs":true,"family":"Hankins","given":"B.","email":"","affiliations":[],"preferred":false,"id":437668,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032734,"text":"70032734 - 2007 - Estimation and application of indicator values for common macroinvertebrate genera and families of the United States","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032734","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1456,"text":"Ecological Indicators","active":true,"publicationSubtype":{"id":10}},"title":"Estimation and application of indicator values for common macroinvertebrate genera and families of the United States","docAbstract":"Tolerance of macroinvertebrate taxa to chemical and physical stressors is widely used in the analysis and interpretation of bioassessment data, but many estimates lack empirical bases. Our main objective was to estimate genus- and family-level indicator values (IVs) from a data set of macroinvertebrate communities, chemical, and physical stressors collected in a consistent manner throughout the United States. We then demonstrated an application of these IVs to detect alterations in benthic macroinvertebrate assemblages along gradients of urbanization in New England and Alabama. Principal components analysis (PCA) was used to create synthetic gradients of chemical stressors, for which genus- and family-level weighted averages (WAs) were calculated. Based on results of PCA, WAs were calculated for three synthetic gradients (ionic concentration, nutrient concentration, and dissolved oxygen/water temperature) and two uncorrelated physical variables (suspended sediment concentration and percent fines). Indicator values for each stress gradient were subsequently created by transforming WAs into ten ordinal ranks based on percentiles of values across all taxa. Mean IVs of genera and families were highly correlated to road density in Alabama and New England, and supported the conclusions of independent assessments of the chemical and physical stressors acting in each geographic area. Family IVs were nearly as responsive to urbanization as genus IVs. The limitations of widespread use of these IVs are discussed.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Indicators","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.ecolind.2005.09.005","issn":"1470160X","usgsCitation":"Carlisle, D., Meador, M.R., Moulton, S., and Ruhl, P.M., 2007, Estimation and application of indicator values for common macroinvertebrate genera and families of the United States: Ecological Indicators, v. 7, no. 1, p. 22-33, https://doi.org/10.1016/j.ecolind.2005.09.005.","startPage":"22","endPage":"33","numberOfPages":"12","costCenters":[],"links":[{"id":213954,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecolind.2005.09.005"},{"id":241631,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b70e4b0c8380cd52710","contributors":{"authors":[{"text":"Carlisle, D.M.","contributorId":81059,"corporation":false,"usgs":true,"family":"Carlisle","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":437675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meador, M. R.","contributorId":74400,"corporation":false,"usgs":true,"family":"Meador","given":"M.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":437674,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moulton, S.R. II","contributorId":26460,"corporation":false,"usgs":true,"family":"Moulton","given":"S.R.","suffix":"II","email":"","affiliations":[],"preferred":false,"id":437672,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ruhl, P. M.","contributorId":30251,"corporation":false,"usgs":true,"family":"Ruhl","given":"P.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":437673,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032735,"text":"70032735 - 2007 - Modeling management scenarios and the effects of an introduced apex predator on a coastal riverine fish community","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032735","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Modeling management scenarios and the effects of an introduced apex predator on a coastal riverine fish community","docAbstract":"The flathead catfish Pylodictis olivaris, a carnivorous fish species native to most of the central interior basin of North America, has been introduced into at least 13 U.S. states and 1 Canadian province. Concurrent declines in abundance of native fishes have been reported in aquatic systems where flathead catfish have been introduced. To evaluate the potential impact of this invasive species on the native fish community we developed an ecosystem simulation model (including flathead catfish) based on empirical data collected from a North Carolina coastal river. The model results suggest that flathead catfish suppress native fish community biomass by 5-50% through both predatory and competitive interactions. However, our model suggests these reductions could be mitigated through sustained exploitation of flathead catfish by recreational or commercial fishers at rates equivalent to those for native flathead catfish populations (annual exploitation = 6-25%). These findings demonstrate the potential for using directed harvest of an invasive species to assist in restoring native communities. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transactions of the American Fisheries Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/T05-249.1","issn":"00028487","usgsCitation":"Pine, W., Kwak, T., and Rice, J., 2007, Modeling management scenarios and the effects of an introduced apex predator on a coastal riverine fish community: Transactions of the American Fisheries Society, v. 136, no. 1, p. 105-120, https://doi.org/10.1577/T05-249.1.","startPage":"105","endPage":"120","numberOfPages":"16","costCenters":[],"links":[{"id":213955,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/T05-249.1"},{"id":241632,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"136","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-01-09","publicationStatus":"PW","scienceBaseUri":"505a5c08e4b0c8380cd6f9aa","contributors":{"authors":[{"text":"Pine, William E. III","contributorId":56759,"corporation":false,"usgs":true,"family":"Pine","given":"William E.","suffix":"III","affiliations":[],"preferred":false,"id":437676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kwak, T.J.","contributorId":104236,"corporation":false,"usgs":true,"family":"Kwak","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":437678,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rice, J. A.","contributorId":101217,"corporation":false,"usgs":true,"family":"Rice","given":"J.","middleInitial":"A.","affiliations":[],"preferred":false,"id":437677,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}