{"pageNumber":"2351","pageRowStart":"58750","pageSize":"25","recordCount":184617,"records":[{"id":70029892,"text":"70029892 - 2007 - Free zinc ion and dissolved orthophosphate effects on phytoplankton from Coeur d'Alene Lake, Idaho","interactions":[],"lastModifiedDate":"2023-08-25T12:07:25.166789","indexId":"70029892","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Free zinc ion and dissolved orthophosphate effects on phytoplankton from Coeur d'Alene Lake, Idaho","docAbstract":"

Coeur d'Alene Lake in northern Idaho is fed by two major rivers:  the Coeur d'Alene River from the east and the St. Joe River from the south, with the Spokane River as its outlet to the north. This phosphorus-limited lake has been subjected to decades of mining (primarily for zinc and silver) and other anthropogenic inputs. A 32 full-factorial experimental design was used to examine the interactive effects of free (uncomplexed) zinc ion and dissolved-orthophosphate concentrations on phytoplankton that were isolated from two sites along a longitudinal zinc-concentration gradient in Coeur d'Alene Lake. The two sites displayed different dominant taxa. Chlorella minutissima, a dominant species near the southern St. Joe River inlet, exhibited greater sensitivity to free Zn ions than Asterionella formosa, collected nearer the Coeur d'Alene River mouth with elevated dissolved-zinc concentrations. Empirical phytoplankton-response models were generated to describe phytoplankton growth in response to remediation strategies in the surrounding watershed. If dissolved Zn can be reduced in the water column from >500 nM (i.e., current concentrations near and down stream of the Coeur d'Alene River plume) to <3 nM (i.e., concentrations near the southern St. Joe River inlet) such that the lake is truly phosphorus limited, management of phosphorus inputs by surrounding communities will ultimately determine the limnologic state of the lake.

","language":"English","publisher":"American Chemical Society","doi":"10.1021/es062923l","issn":"0013936X","usgsCitation":"Kuwabara, J.S., Topping, B.R., Woods, P.F., and Carter, J.L., 2007, Free zinc ion and dissolved orthophosphate effects on phytoplankton from Coeur d'Alene Lake, Idaho: Environmental Science & Technology, v. 41, no. 8, p. 2811-2817, https://doi.org/10.1021/es062923l.","productDescription":"7 p.","startPage":"2811","endPage":"2817","numberOfPages":"7","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240650,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho","otherGeospatial":"Coeur d'Alene Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.81625366210938,\n 47.68018294648414\n ],\n [\n -116.707763671875,\n 47.66538735632654\n ],\n [\n -116.64596557617188,\n 47.635783590864854\n ],\n [\n -116.64321899414062,\n 47.61079236060622\n ],\n [\n -116.7572021484375,\n 47.61264397257417\n ],\n [\n -116.7681884765625,\n 47.57652571374621\n ],\n [\n -116.75170898437501,\n 47.54038252373696\n ],\n [\n -116.8231201171875,\n 47.484728927366504\n ],\n [\n -116.77780151367186,\n 47.4828727909934\n ],\n [\n -116.75857543945312,\n 47.4828727909934\n ],\n [\n -116.75445556640625,\n 47.45223707184017\n ],\n [\n -116.70639038085938,\n 47.40764414848437\n ],\n [\n -116.67892456054688,\n 47.35836223484991\n ],\n [\n -116.69540405273438,\n 47.33789206010502\n ],\n [\n -116.77230834960938,\n 47.34905859411952\n ],\n [\n -116.78741455078125,\n 47.37975438400816\n ],\n [\n -116.79153442382812,\n 47.41322033016902\n ],\n [\n -116.88079833984375,\n 47.462450962249356\n ],\n [\n -116.94671630859375,\n 47.45687999525879\n ],\n [\n -116.94259643554688,\n 47.47823216312885\n ],\n [\n -116.90826416015625,\n 47.51349065484327\n ],\n [\n -116.87667846679689,\n 47.516273211681984\n ],\n [\n -116.82861328125001,\n 47.58486290927609\n ],\n [\n -116.8780517578125,\n 47.592272635166125\n ],\n [\n -116.8780517578125,\n 47.61264397257417\n ],\n [\n -116.83135986328125,\n 47.61819841513311\n ],\n [\n -116.80938720703124,\n 47.62190104905555\n ],\n [\n -116.82861328125001,\n 47.65613798222679\n ],\n [\n -116.83959960937499,\n 47.67186094318796\n ],\n [\n -116.81625366210938,\n 47.68018294648414\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"41","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-03-09","publicationStatus":"PW","scienceBaseUri":"505a13c1e4b0c8380cd54782","contributors":{"authors":[{"text":"Kuwabara, James S. 0000-0003-2502-1601 kuwabara@usgs.gov","orcid":"https://orcid.org/0000-0003-2502-1601","contributorId":3374,"corporation":false,"usgs":true,"family":"Kuwabara","given":"James","email":"kuwabara@usgs.gov","middleInitial":"S.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":424758,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Topping, Brent R. 0000-0002-7887-4221 btopping@usgs.gov","orcid":"https://orcid.org/0000-0002-7887-4221","contributorId":1484,"corporation":false,"usgs":true,"family":"Topping","given":"Brent","email":"btopping@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424760,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woods, Paul F.","contributorId":82273,"corporation":false,"usgs":true,"family":"Woods","given":"Paul","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":424759,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carter, James L. 0000-0002-0104-9776 jlcarter@usgs.gov","orcid":"https://orcid.org/0000-0002-0104-9776","contributorId":3278,"corporation":false,"usgs":true,"family":"Carter","given":"James","email":"jlcarter@usgs.gov","middleInitial":"L.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424757,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029894,"text":"70029894 - 2007 - Deriving a light use efficiency model from eddy covariance flux data for predicting daily gross primary production across biomes","interactions":[],"lastModifiedDate":"2017-04-12T16:04:03","indexId":"70029894","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":681,"text":"Agricultural and Forest Meteorology","active":true,"publicationSubtype":{"id":10}},"title":"Deriving a light use efficiency model from eddy covariance flux data for predicting daily gross primary production across biomes","docAbstract":"

The quantitative simulation of gross primary production (GPP) at various spatial and temporal scales has been a major challenge in quantifying the global carbon cycle. We developed a light use efficiency (LUE) daily GPP model from eddy covariance (EC) measurements. The model, called EC-LUE, is driven by only four variables: normalized difference vegetation index (NDVI), photosynthetically active radiation (PAR), air temperature, and the Bowen ratio of sensible to latent heat flux (used to calculate moisture stress). The EC-LUE model relies on two assumptions: First, that the fraction of absorbed PAR (fPAR) is a linear function of NDVI; Second, that the realized light use efficiency, calculated from a biome-independent invariant potential LUE, is controlled by air temperature or soil moisture, whichever is most limiting. The EC-LUE model was calibrated and validated using 24,349 daily GPP estimates derived from 28 eddy covariance flux towers from the AmeriFlux and EuroFlux networks, covering a variety of forests, grasslands and savannas. The model explained 85% and 77% of the observed variations of daily GPP for all the calibration and validation sites, respectively. A comparison with GPP calculated from the Moderate Resolution Imaging Spectroradiometer (MODIS) indicated that the EC-LUE model predicted GPP that better matched tower data across these sites. The realized LUE was predominantly controlled by moisture conditions throughout the growing season, and controlled by temperature only at the beginning and end of the growing season. The EC-LUE model is an alternative approach that makes it possible to map daily GPP over large areas because (1) the potential LUE is invariant across various land cover types and (2) all driving forces of the model can be derived from remote sensing data or existing climate observation networks.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.agrformet.2006.12.001","issn":"01681923","usgsCitation":"Yuan, W., Liu, S., Zhou, G., Tieszen, L., Baldocchi, D., Bernhofer, C., Gholz, H., Goldstein, A.H., Goulden, M.L., Hollinger, D., Hu, Y., Law, B.E., Stoy, P., Vesala, T., and Wofsy, S., 2007, Deriving a light use efficiency model from eddy covariance flux data for predicting daily gross primary production across biomes: Agricultural and Forest Meteorology, v. 143, no. 3-4, p. 189-207, https://doi.org/10.1016/j.agrformet.2006.12.001.","productDescription":"19 p.","startPage":"189","endPage":"207","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":476983,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://escholarship.org/uc/item/0nv498zp","text":"External Repository"},{"id":240683,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213094,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.agrformet.2006.12.001"}],"volume":"143","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fedee4b0c8380cd4ef81","contributors":{"authors":[{"text":"Yuan, W.","contributorId":35955,"corporation":false,"usgs":true,"family":"Yuan","given":"W.","email":"","affiliations":[],"preferred":false,"id":424791,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, S.","contributorId":93170,"corporation":false,"usgs":true,"family":"Liu","given":"S.","affiliations":[],"preferred":false,"id":424798,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhou, G.","contributorId":12604,"corporation":false,"usgs":true,"family":"Zhou","given":"G.","email":"","affiliations":[],"preferred":false,"id":424786,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tieszen, L.L.","contributorId":24046,"corporation":false,"usgs":true,"family":"Tieszen","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":424789,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Baldocchi, D.","contributorId":40368,"corporation":false,"usgs":true,"family":"Baldocchi","given":"D.","affiliations":[],"preferred":false,"id":424793,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bernhofer, C.","contributorId":37964,"corporation":false,"usgs":true,"family":"Bernhofer","given":"C.","email":"","affiliations":[],"preferred":false,"id":424792,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gholz, H.","contributorId":107938,"corporation":false,"usgs":true,"family":"Gholz","given":"H.","email":"","affiliations":[],"preferred":false,"id":424799,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Goldstein, Allen H.","contributorId":7452,"corporation":false,"usgs":true,"family":"Goldstein","given":"Allen","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":424785,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Goulden, M. L.","contributorId":35095,"corporation":false,"usgs":false,"family":"Goulden","given":"M.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424790,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Hollinger, D.Y.","contributorId":86567,"corporation":false,"usgs":true,"family":"Hollinger","given":"D.Y.","email":"","affiliations":[],"preferred":false,"id":424797,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Hu, Y.","contributorId":68474,"corporation":false,"usgs":true,"family":"Hu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":424796,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Law, B. E.","contributorId":17586,"corporation":false,"usgs":true,"family":"Law","given":"B.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424787,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Stoy, Paul C.","contributorId":60860,"corporation":false,"usgs":true,"family":"Stoy","given":"Paul C.","affiliations":[],"preferred":false,"id":424795,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Vesala, T.","contributorId":21355,"corporation":false,"usgs":true,"family":"Vesala","given":"T.","affiliations":[],"preferred":false,"id":424788,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Wofsy, S.C.","contributorId":44699,"corporation":false,"usgs":true,"family":"Wofsy","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":424794,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70029897,"text":"70029897 - 2007 - Sequence stratigraphic controls on synsedimentary cementation and preservation of dinosaur tracks: Example from the lower Cretaceous, (Upper Albian) Dakota Formation, Southeastern Nebraska, U.S.A.","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029897","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Sequence stratigraphic controls on synsedimentary cementation and preservation of dinosaur tracks: Example from the lower Cretaceous, (Upper Albian) Dakota Formation, Southeastern Nebraska, U.S.A.","docAbstract":"A thin cemented sandstone bed in the Upper Albian Dakota Formation of southeastern Nebraska contains the first dinosaur tracks to be described from the state. Of equal importance to the tracks are stable-isotope (C, O) analyses of cements in the track bed, especially in the context of data derived from generally correlative strata (sandstones and sphaerosiderite-bearing paleosols) in the region. These data provide the framework for interpretations of paleoenvironmental conditions, as well as a novel approach to understanding mechanisms of terrestrial vertebrate track preservation. High minus-cement-porosity (> 47%) and low grain-to-grain contacts (???2.5) in the track bed indicate early (pre-compaction) lithification. Although phreatic cements dominate, the history of cementation within this stratigraphic interval is complex. Cathodoluminescence petrography reveals two distinct calcite zones in the track-bearing horizon and four cement zones in stratigraphically equivalent strata from a nearby section. The earliest calcite cements from both localities are likely coeval because they exhibit identical positive covariant trends (??18O values of - 9.89 to - 6.32??? and ??13C values of - 28.01 to - 19.33??? VPDB) and record mixing of brackish and meteoric groundwaters. All other calcite cements define meteoric calcite lines with ??18O values clustering around - 9.42??? and - 8.21??? VPDB from the track-bearing horizon, and - 7.74???, - 5.81???, and - 3.95??? VPDB from the neighboring section. Distinct meteoric sphaerosiderite lines from roughly correlative paleosols serve as a proxy for locally recharged groundwaters. Back-calculated paleogroundwater ??18O estimates from paleosol sphaerosiderites range from - 7.4 to - 4.2??? SMOW; whereas, meteoric calcite lines from the track horizon are generally more depleted. Differences in cement ??18O values record changes in paleogroundwater recharge areas over time. Early calcite cements indicate mixing of fresh and brackish groundwaters during the syndepositional lithification of the track horizon. Later calcite cements, however, indicate recharge from a larger catchment basin that extended far inland. Therefore, the cements likely record a rise and subsequent fall in relative sea level. We conclude that scrutiny of the cement isotope geochemistry of genetically significant surfaces, especially track beds, can provide new data for interpreting sea level change. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.palaeo.2006.10.013","issn":"00310182","usgsCitation":"Phillips, P., Ludvigson, G.A., Matthew, J.R., Gonzalez, L.A., Brenner, R.L., and Witzke, B., 2007, Sequence stratigraphic controls on synsedimentary cementation and preservation of dinosaur tracks: Example from the lower Cretaceous, (Upper Albian) Dakota Formation, Southeastern Nebraska, U.S.A.: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 246, no. 2-4, p. 367-389, https://doi.org/10.1016/j.palaeo.2006.10.013.","startPage":"367","endPage":"389","numberOfPages":"23","costCenters":[],"links":[{"id":477262,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.unl.edu/geosciencefacpub/297","text":"External Repository"},{"id":240212,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212687,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2006.10.013"}],"volume":"246","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8d4be4b08c986b318327","contributors":{"authors":[{"text":"Phillips, P.L. Jr.","contributorId":29216,"corporation":false,"usgs":true,"family":"Phillips","given":"P.L.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":424813,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ludvigson, Greg A.","contributorId":80803,"corporation":false,"usgs":true,"family":"Ludvigson","given":"Greg","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424814,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Matthew, Joeckel R.","contributorId":101460,"corporation":false,"usgs":true,"family":"Matthew","given":"Joeckel","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424816,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gonzalez, Luis A.","contributorId":20922,"corporation":false,"usgs":true,"family":"Gonzalez","given":"Luis","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424812,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brenner, Richard L.","contributorId":94457,"corporation":false,"usgs":false,"family":"Brenner","given":"Richard","email":"","middleInitial":"L.","affiliations":[{"id":13387,"text":"Alaska Department of Fish and Game - Commercial Fisheries, P.O. Box 669, Cordova, AK 99574","active":true,"usgs":false}],"preferred":false,"id":424815,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Witzke, B.J.","contributorId":12976,"corporation":false,"usgs":true,"family":"Witzke","given":"B.J.","affiliations":[],"preferred":false,"id":424811,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70029898,"text":"70029898 - 2007 - Global warming and climate forcing by recent albedo changes on Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029898","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Global warming and climate forcing by recent albedo changes on Mars","docAbstract":"For hundreds of years, scientists have tracked the changing appearance of Mars, first by hand drawings and later by photographs. Because of this historical record, many classical albedo patterns have long been known to shift in appearance over time. Decadal variations of the martian surface albedo are generally attributed to removal and deposition of small amounts of relatively bright dust on the surface. Large swaths of the surface (up to 56 million km2) have been observed to darken or brighten by 10 per cent or more. It is unknown, however, how these albedo changes affect wind circulation, dust transport and the feedback between these processes and the martian climate. Here we present predictions from a Mars general circulation model, indicating that the observed interannual albedo alterations strongly influence the martian environment. Results indicate enhanced wind stress in recently darkened areas and decreased wind stress in brightened areas, producing a positive feedback system in which the albedo changes strengthen the winds that generate the changes. The simulations also predict a net annual global warming of surface air temperatures by ???0.65 K, enhancing dust lifting by increasing the likelihood of dust devil generation. The increase in global dust lifting by both wind stress and dust devils may affect the mechanisms that trigger large dust storm initiation, a poorly understood phenomenon, unique to Mars. In addition, predicted increases in summertime air temperatures at high southern latitudes would contribute to the rapid and steady scarp retreat that has been observed in the south polar residual ice for the past four Mars years. Our results suggest that documented albedo changes affect recent climate change and large-scale weather patterns on Mars, and thus albedo variations are a necessary component of future atmospheric and climate studies. ??2007 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/nature05718","issn":"00280836","usgsCitation":"Fenton, L., Geissler, P., and Haberle, R., 2007, Global warming and climate forcing by recent albedo changes on Mars: Nature, v. 446, no. 7136, p. 646-649, https://doi.org/10.1038/nature05718.","startPage":"646","endPage":"649","numberOfPages":"4","costCenters":[],"links":[{"id":240213,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212688,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/nature05718"}],"volume":"446","issue":"7136","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2964e4b0c8380cd5a8eb","contributors":{"authors":[{"text":"Fenton, L.K.","contributorId":102189,"corporation":false,"usgs":true,"family":"Fenton","given":"L.K.","affiliations":[],"preferred":false,"id":424819,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Geissler, P.E.","contributorId":67636,"corporation":false,"usgs":true,"family":"Geissler","given":"P.E.","email":"","affiliations":[],"preferred":false,"id":424817,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haberle, R.M.","contributorId":94461,"corporation":false,"usgs":true,"family":"Haberle","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":424818,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029899,"text":"70029899 - 2007 - A post-Calumet shoreline along southern Lake Michigan","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029899","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2411,"text":"Journal of Paleolimnology","active":true,"publicationSubtype":{"id":10}},"title":"A post-Calumet shoreline along southern Lake Michigan","docAbstract":"The southern shore of Lake Michigan is the type area for many of ancestral Lake Michigan's late Pleistocene lake phases, but coastal deposits and features of the Algonquin phase of northern Lake Michigan, Lake Huron, and Lake Superior are not recognized in the area. Isostatic rebound models suggest that Algonquin phase deposits should be 100 m or more below modern lake level. A relict shoreline, however, exists along the lakeward margin of the Calumet Beach that was erosional west of Deep River and depositional east of the river. For this post-Calumet shoreline, the elevation of basal foreshore deposits east of Deep River and the base of the scarp west of Deep River indicate a slightly westward dipping water plane that is centered at ???184 m above mean sea level. Basal foreshore elevations also indicate that lake level fell ???2 m during the development of the shoreline. The pooled mean of radiocarbon dates from the surface of the peat below post-Calumet shoreline foreshore deposits indicate that the lake transgressed over the peat at 10,560 ?? 70 years B.P. Pollen assemblages from the peat are consistent with this age. The elevation and age of the post-Calumet shoreline are similar to the Main Algonquin phase of Lake Huron. Recent isostatic rebound models do not adequately address a high-elevation Algonquin-age shoreline along the southern shore of Lake Michigan, but the Goldthwait (1908) hinge-line model does. ?? 2006 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Paleolimnology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10933-006-9046-1","issn":"09212728","usgsCitation":"Capps, D., Thompson, T., and Booth, R., 2007, A post-Calumet shoreline along southern Lake Michigan: Journal of Paleolimnology, v. 37, no. 3, p. 395-409, https://doi.org/10.1007/s10933-006-9046-1.","startPage":"395","endPage":"409","numberOfPages":"15","costCenters":[],"links":[{"id":212720,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10933-006-9046-1"},{"id":240248,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-12-13","publicationStatus":"PW","scienceBaseUri":"5059e4e5e4b0c8380cd469e0","contributors":{"authors":[{"text":"Capps, D.K.","contributorId":62833,"corporation":false,"usgs":true,"family":"Capps","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":424821,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, T.A.","contributorId":73226,"corporation":false,"usgs":true,"family":"Thompson","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":424822,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Booth, R.K.","contributorId":47122,"corporation":false,"usgs":true,"family":"Booth","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":424820,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029900,"text":"70029900 - 2007 - Extraction of near-surface properties for a lossy layered medium using the propagator matrix","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029900","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Extraction of near-surface properties for a lossy layered medium using the propagator matrix","docAbstract":"Near-surface properties play an important role in advancing earthquake hazard assessment. Other areas where near-surface properties are crucial include civil engineering and detection and delineation of potable groundwater. From an exploration point of view, near-surface properties are needed for wavefield separation and correcting for the local near-receiver structure. It has been shown that these properties can be estimated for a lossless homogeneous medium using the propagator matrix. To estimate the near-surface properties, we apply deconvolution to passive borehole recordings of waves excited by an earthquake. Deconvolution of these incoherent waveforms recorded by the sensors at different depths in the borehole with the recording at the surface results in waves that propagate upwards and downwards along the array. These waves, obtained by deconvolution, can be used to estimate the P- and S-wave velocities near the surface. As opposed to waves obtained by cross-correlation that represent filtered version of the sum of causal and acausal Green's function between the two receivers, the waves obtained by deconvolution represent the elements of the propagator matrix. Finally, we show analytically the extension of the propagator matrix analysis to a lossy layered medium for a special case of normal incidence. ?? 2007 The Authors Journal compilation ?? 2007 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2006.03303.x","issn":"0956540X","usgsCitation":"Mehta, K., Snieder, R., and Graizer, V., 2007, Extraction of near-surface properties for a lossy layered medium using the propagator matrix: Geophysical Journal International, v. 169, no. 1, p. 271-280, https://doi.org/10.1111/j.1365-246X.2006.03303.x.","startPage":"271","endPage":"280","numberOfPages":"10","costCenters":[],"links":[{"id":477275,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2006.03303.x","text":"Publisher Index Page"},{"id":212721,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2006.03303.x"},{"id":240249,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"169","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e60e4b0c8380cd53409","contributors":{"authors":[{"text":"Mehta, K.","contributorId":60440,"corporation":false,"usgs":true,"family":"Mehta","given":"K.","email":"","affiliations":[],"preferred":false,"id":424823,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snieder, R.","contributorId":63924,"corporation":false,"usgs":true,"family":"Snieder","given":"R.","email":"","affiliations":[],"preferred":false,"id":424824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Graizer, V.","contributorId":88930,"corporation":false,"usgs":true,"family":"Graizer","given":"V.","email":"","affiliations":[],"preferred":false,"id":424825,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029903,"text":"70029903 - 2007 - Prey resources before spawning influence gonadal investment of female, but not male, white crappie","interactions":[],"lastModifiedDate":"2016-05-02T09:26:26","indexId":"70029903","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2285,"text":"Journal of Fish Biology","active":true,"publicationSubtype":{"id":10}},"title":"Prey resources before spawning influence gonadal investment of female, but not male, white crappie","docAbstract":"

In this study, an outdoor pool experiment was used to evaluate the effect of prey resources during 4 months before spawning on the gonadal investments of male and female white crappie Pomoxis annularis, a popular freshwater sportfish that exhibits erratic recruitment. Fish were assigned one of three feeding treatments: starved, fed once every 5 days (intermediate) or fed daily (high). All measurements of male testes (i.e. wet mass, energy density and spermatocrit) were similar across treatments. Conversely, high-fed females produced larger ovaries than those of intermediate-fed and starved fish, and invested more energy in their ovaries than starved fish. Compared to pre-experiment fish, starved and intermediate-fed females appeared to increase their ovary size by relying on liver energy stores (‘capital’ spawning). Conversely, high-fed females increased liver and gonad mass, implying an ‘income’-spawning strategy (where gonads are built from recently acquired energy). Fecundity did not differ among treatments, but high-fed fish built larger eggs than those starved. Females rarely ‘skipped’ spawning opportunities when prey resources were low, as only 8% of starved females and 8% of intermediate-fed females lacked vitellogenic eggs. These results suggest that limited prey resources during the months before spawning can limit ovary production, which, in turn, can limit reproductive success of white crappies.

","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.2007.01459.x","issn":"00221112","usgsCitation":"Bunnell, D., Thomas, S., and Stein, R., 2007, Prey resources before spawning influence gonadal investment of female, but not male, white crappie: Journal of Fish Biology, v. 70, no. 6, p. 1838-1854, https://doi.org/10.1111/j.1095-8649.2007.01459.x.","productDescription":"17 p.","startPage":"1838","endPage":"1854","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":477120,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/1811/44508","text":"External Repository"},{"id":240284,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212748,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1095-8649.2007.01459.x"}],"volume":"70","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-05-23","publicationStatus":"PW","scienceBaseUri":"505a8b82e4b0c8380cd7e281","contributors":{"authors":[{"text":"Bunnell, D.B.","contributorId":8610,"corporation":false,"usgs":true,"family":"Bunnell","given":"D.B.","affiliations":[],"preferred":false,"id":424838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thomas, S.E.","contributorId":10622,"corporation":false,"usgs":true,"family":"Thomas","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":424839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stein, R.A.","contributorId":43893,"corporation":false,"usgs":true,"family":"Stein","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":424840,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029904,"text":"70029904 - 2007 - Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029904","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources","docAbstract":"The spatial distribution of discovered resources may not fully mimic the distribution of all such resources, discovered and undiscovered, because the process of discovery is biased by accessibility factors (e.g., outcrops, roads, and lakes) and by exploration criteria. In data-driven predictive models, the use of training sites (resource occurrences) biased by exploration criteria and accessibility does not necessarily translate to a biased predictive map. However, problems occur when evidence layers correlate with these same exploration factors. These biases then can produce a data-driven model that predicts known occurrences well, but poorly predicts undiscovered resources. Statistical assessment of correlation between evidence layers and map-based exploration factors is difficult because it is difficult to quantify the \"degree of exploration.\" However, if such a degree-of-exploration map can be produced, the benefits can be enormous. Not only does it become possible to assess this correlation, but it becomes possible to predict undiscovered, instead of discovered, resources. Using geothermal systems in Nevada, USA, as an example, a degree-of-exploration model is created, which then is resolved into purely explored and unexplored equivalents, each occurring within coextensive study areas. A weights-of-evidence (WofE) model is built first without regard to the degree of exploration, and then a revised WofE model is calculated for the \"explored fraction\" only. Differences in the weights between the two models provide a correlation measure between the evidence and the degree of exploration. The data used to build the geothermal evidence layers are perceived to be independent of degree of exploration. Nevertheless, the evidence layers correlate with exploration because exploration has preferred the same favorable areas identified by the evidence patterns. In this circumstance, however, the weights for the \"explored\" WofE model minimize this bias. Using these revised weights, posterior probability is extrapolated into unexplored areas to estimate undiscovered deposits. ?? International Association for Mathematical Geology 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Natural Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11053-007-9037-6","issn":"15207439","usgsCitation":"Coolbaugh, M., Raines, G.L., and Zehner, R.E., 2007, Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources: Natural Resources Research, v. 16, no. 2, p. 199-207, https://doi.org/10.1007/s11053-007-9037-6.","startPage":"199","endPage":"207","numberOfPages":"9","costCenters":[],"links":[{"id":212780,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-007-9037-6"},{"id":240318,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-05-16","publicationStatus":"PW","scienceBaseUri":"5059ee2ee4b0c8380cd49beb","contributors":{"authors":[{"text":"Coolbaugh, M.F.","contributorId":55034,"corporation":false,"usgs":true,"family":"Coolbaugh","given":"M.F.","affiliations":[],"preferred":false,"id":424841,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raines, G. L.","contributorId":90720,"corporation":false,"usgs":true,"family":"Raines","given":"G.","middleInitial":"L.","affiliations":[],"preferred":false,"id":424843,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zehner, R. E.","contributorId":67933,"corporation":false,"usgs":true,"family":"Zehner","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424842,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029906,"text":"70029906 - 2007 - Relative influence of streamflows in assessing temporal variability in stream habitat","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029906","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Relative influence of streamflows in assessing temporal variability in stream habitat","docAbstract":"The effects of streamflows on temporal variation in stream habitat were analyzed from the data collected 6-11 years apart at 38 sites across the United States. Multiple linear regression was used to assess the variation in habitat caused by streamflow at the time of sampling and high flows between sampling. In addition to flow variables, the model also contained geomorphic and land use factors. The regression model was statistically significant (p < 0.05; R 2 = 0.31-0.46) for 5 of 14 habitat variables: mean wetted stream depth, mean bankfull depth, mean wetted stream width, coefficient of variation of wetted stream width, and the percent frequency of bank erosion. High flows between samples accounted for about 16% of the total variation in the frequency of bank erosion. Streamflow at the time of sampling was the main source of variation in mean stream depth and contributed to the variation in mean stream width and the frequency of bank erosion. Urban land use (population change) accounted for over 20% of the total variation in mean bankfull depth, 15% of the total variation in the coefficient of variation of stream width, and about 10% of the variation in mean stream width. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00051.x","issn":"1093474X","usgsCitation":"Goldstein, R.M., Meador, M.R., and Ruhl, K., 2007, Relative influence of streamflows in assessing temporal variability in stream habitat: Journal of the American Water Resources Association, v. 43, no. 3, p. 642-650, https://doi.org/10.1111/j.1752-1688.2007.00051.x.","startPage":"642","endPage":"650","numberOfPages":"9","costCenters":[],"links":[{"id":240354,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212810,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00051.x"}],"volume":"43","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-05-07","publicationStatus":"PW","scienceBaseUri":"505aa68ce4b0c8380cd84ef6","contributors":{"authors":[{"text":"Goldstein, R. M.","contributorId":98305,"corporation":false,"usgs":true,"family":"Goldstein","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424849,"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":424847,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruhl, K.E.","contributorId":92869,"corporation":false,"usgs":true,"family":"Ruhl","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":424848,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029907,"text":"70029907 - 2007 - Temperature and diet effects on omnivorous fish performance: Implications for the latitudinal diversity gradient in herbivorous fishes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029907","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Temperature and diet effects on omnivorous fish performance: Implications for the latitudinal diversity gradient in herbivorous fishes","docAbstract":"Herbivorous fishes show a clear latitudinal diversity gradient, making up a larger proportion of the fish species in a community in tropical waters than in temperate waters. One proposed mechanism that could drive this gradient is a physiological constraint due to temperature. One prediction based on this mechanism is that if herbivorous fishes could shift their diet to animal material, they would be better able to grow, survive, and reproduce in cold waters. We tested this prediction on the omnivore Girella nigricans under different temperature and diet regimes using RNA-DNA ratios as an indicator of performance. Fish had increased performance (100%) at low temperatures (12??C) when their diet was supplemented with animal material. In contrast, at higher temperatures (17, 22, and 27??C) fish showed no differences between diets. This indicates that omnivorous fishes could increase their performance at low temperatures by consuming more animal matter. This study supports the hypothesis that a relative increase in the nutritional value of plant material at warmer temperatures could drive the latitudinal diversity gradient in herbivorous fishes. ?? 2007 NRC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Fisheries and Aquatic Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/F07-063","issn":"0706652X","usgsCitation":"Behrens, M., and Lafferty, K.D., 2007, Temperature and diet effects on omnivorous fish performance: Implications for the latitudinal diversity gradient in herbivorous fishes: Canadian Journal of Fisheries and Aquatic Sciences, v. 64, no. 6, p. 867-873, https://doi.org/10.1139/F07-063.","startPage":"867","endPage":"873","numberOfPages":"7","costCenters":[],"links":[{"id":240355,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212811,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/F07-063"}],"volume":"64","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba4b8e4b08c986b32052a","contributors":{"authors":[{"text":"Behrens, M.D.","contributorId":66890,"corporation":false,"usgs":true,"family":"Behrens","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":424851,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lafferty, K. D.","contributorId":58213,"corporation":false,"usgs":false,"family":"Lafferty","given":"K.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424850,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029908,"text":"70029908 - 2007 - Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh","interactions":[],"lastModifiedDate":"2023-08-09T11:24:51.739136","indexId":"70029908","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh","docAbstract":"

Sediment from two deep boreholes (∼400 m) approximately 90 km apart in southern Bangladesh was analyzed by X-ray absorption spectroscopy (XAS), total chemical analyses, chemical extractions, and electron probe microanalysis to establish the importance of authigenic pyrite as a sink for arsenic in the Bengal Basin. Authigenic framboidal and massive pyrite (median values 1500 and 3200 ppm As, respectively), is the principal arsenic residence in sediment from both boreholes. Although pyrite is dominant, ferric oxyhydroxides and secondary iron phases contain a large fraction of the sediment-bound arsenic between approximately 20 and 100 m, which is the depth range of wells containing the greatest amount of dissolved arsenic. The lack of pyrite in this interval is attributed to rapid sediment deposition and a low sulfur flux from riverine and atmospheric sources. The ability of deeper aquifers (>150 m) to produce ground water with low dissolved arsenic in southern Bangladesh reflects adequate sulfur supplies and sufficient time to redistribute the arsenic into pyrite during diagenesis.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2007.03.022","issn":"00167037","usgsCitation":"Lowers, H., Breit, G.N., Foster, A.L., Whitney, J.W., Yount, J., Uddin, N., and Muneem, A.A., 2007, Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh: Geochimica et Cosmochimica Acta, v. 71, no. 11, p. 2699-2717, https://doi.org/10.1016/j.gca.2007.03.022.","productDescription":"19 p.","startPage":"2699","endPage":"2717","costCenters":[],"links":[{"id":240356,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Bangladesh","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[92.67272,22.04124],[92.65226,21.32405],[92.30323,21.47549],[92.36855,20.67088],[92.08289,21.1922],[92.02522,21.70157],[91.83489,22.18294],[91.41709,22.76502],[90.49601,22.80502],[90.58696,22.39279],[90.27297,21.83637],[89.84747,22.03915],[89.70205,21.85712],[89.41886,21.96618],[89.03196,22.05571],[88.87631,22.87915],[88.52977,23.63114],[88.69994,24.23371],[88.08442,24.50166],[88.30637,24.86608],[88.93155,25.23869],[88.20979,25.76807],[88.56305,26.44653],[89.35509,26.01441],[89.83248,25.96508],[89.92069,25.26975],[90.87221,25.1326],[91.7996,25.14743],[92.3762,24.97669],[91.91509,24.13041],[91.46773,24.07264],[91.15896,23.50353],[91.70648,22.98526],[91.86993,23.62435],[92.14603,23.6275],[92.67272,22.04124]]]},\"properties\":{\"name\":\"Bangladesh\"}}]}","volume":"71","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed95e4b0c8380cd498be","contributors":{"authors":[{"text":"Lowers, Heather A. hlowers@usgs.gov","contributorId":149265,"corporation":false,"usgs":true,"family":"Lowers","given":"Heather A.","email":"hlowers@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":424855,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Breit, George N. 0000-0003-2188-6798 gbreit@usgs.gov","orcid":"https://orcid.org/0000-0003-2188-6798","contributorId":1480,"corporation":false,"usgs":true,"family":"Breit","given":"George","email":"gbreit@usgs.gov","middleInitial":"N.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":424857,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foster, Andrea L. 0000-0003-1362-0068 afoster@usgs.gov","orcid":"https://orcid.org/0000-0003-1362-0068","contributorId":1740,"corporation":false,"usgs":true,"family":"Foster","given":"Andrea","email":"afoster@usgs.gov","middleInitial":"L.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":424853,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":424856,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yount, James","contributorId":65172,"corporation":false,"usgs":true,"family":"Yount","given":"James","affiliations":[],"preferred":false,"id":424854,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Uddin, Nehal","contributorId":60721,"corporation":false,"usgs":true,"family":"Uddin","given":"Nehal","email":"","affiliations":[],"preferred":false,"id":424852,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Muneem, Ad. Atual","contributorId":49873,"corporation":false,"usgs":true,"family":"Muneem","given":"Ad.","email":"","middleInitial":"Atual","affiliations":[],"preferred":false,"id":424858,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70030052,"text":"70030052 - 2007 - A multi-scale examination of stopover habitat use by birds","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030052","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"A multi-scale examination of stopover habitat use by birds","docAbstract":"Most of our understanding of habitat use by migrating land birds comes from studies conducted at single, small spatial scales, which may overemphasize the importance of intrinsic habitat factors, such as food availability, in shaping migrant distributions. We believe that a multi-scale approach is essential to assess the influence of factors that control en route habitat use. We determined the relative importance of eight variables, each operating at a habitat-patch, landscape, or regional spatial scale, in explaining the differential use of hardwood forests by Nearctic-Neotropical land birds during migration. We estimated bird densities through transect surveys at sites near the Mississippi coast during spring and autumn migration within landscapes with variable amounts of hardwood forest cover. At a regional scale, migrant density increased with proximity to the coast, which was of moderate importance in explaining bird densities, probably due to constraints imposed on migrants when negotiating the Gulf of Mexico. The amount of hardwood forest cover at a landscape scale was positively correlated with arthropod abundance and had the greatest importance in explaining densities of all migrants, as a group, during spring, and of insectivorous migrants during autumn. Among landscape scales ranging from 500 m to 10 km radius, the densities of migrants were, on average, most strongly and positively related to the amount of hardwood forest cover within a 5 km radius. We suggest that hardwood forest cover at this scale may be an indicator of habitat quality that migrants use as a cue when landing at the end of a migratory flight. At the patch scale, direct measures of arthropod abundance and plant community composition were also important in explaining migrant densities, whereas habitat structure was of little importance. The relative amount of fleshy-fruited trees was positively related and was the most important variable explaining frugivorous migrant density during autumn. Although constraints extrinsic to habitat had a moderate role in explaining migrant distributions, our results are consistent with the view that food availability is the ultimate factor shaping the distributions of birds during stopover. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/06-1871.1","issn":"00129658","usgsCitation":"Buler, J., Moore, F., and Woltmann, S., 2007, A multi-scale examination of stopover habitat use by birds: Ecology, v. 88, no. 7, p. 1789-1802, https://doi.org/10.1890/06-1871.1.","startPage":"1789","endPage":"1802","numberOfPages":"14","costCenters":[],"links":[{"id":212934,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/06-1871.1"},{"id":240502,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e48be4b0c8380cd466e8","contributors":{"authors":[{"text":"Buler, J.J.","contributorId":13039,"corporation":false,"usgs":true,"family":"Buler","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":425475,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moore, F.R.","contributorId":48762,"corporation":false,"usgs":true,"family":"Moore","given":"F.R.","email":"","affiliations":[],"preferred":false,"id":425477,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woltmann, S.","contributorId":47588,"corporation":false,"usgs":true,"family":"Woltmann","given":"S.","affiliations":[],"preferred":false,"id":425476,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030050,"text":"70030050 - 2007 - Glacier changes in southeast Alaska and northwest British Columbia and contribution to sea level rise","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030050","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2318,"text":"Journal of Geophysical Research F: Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Glacier changes in southeast Alaska and northwest British Columbia and contribution to sea level rise","docAbstract":"The digital elevation model (DEM) from the 2000 Shuttle Radar Topography Mission (SRTM) was differenced from a composite DEM based on air photos dating from 1948 to 1987 to detennine glacier volume changes in southeast Alaska and adjoining Canada. SRTM accuracy was assessed at ??5 in through comparison with airborne laser altimetry and control locations measured with GPS. Glacier surface elevations lowered over 95% of the 14,580 km2 glacier-covered area analyzed, with some glaciers thinning as much as 640 in. A combination of factors have contributed to this wastage, including calving retreats of tidewater and lacustrine glaciers and climate change. Many glaciers in this region are particularly sensitive to climate change, as they have large areas at low elevations. However, several tidewater glaciers that had historically undergone calving retreats are now expanding and appear to be in the advancing stage of the tidewater glacier cycle. The net average rate of ice loss is estimated at 16.7 ?? 4.4 km3/yr, equivalent to a global sea level rise contribution of 0.04 ?? 0.01 mm/yr. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research F: Earth Surface","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JF000586","issn":"01480227","usgsCitation":"Larsen, C., Motyka, R., Arendt, A., Echelmeyer, K., and Geissler, P., 2007, Glacier changes in southeast Alaska and northwest British Columbia and contribution to sea level rise: Journal of Geophysical Research F: Earth Surface, v. 112, no. 1, https://doi.org/10.1029/2006JF000586.","costCenters":[],"links":[{"id":477126,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jf000586","text":"Publisher Index Page"},{"id":240467,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212902,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JF000586"}],"volume":"112","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-02-24","publicationStatus":"PW","scienceBaseUri":"505a2914e4b0c8380cd5a66a","contributors":{"authors":[{"text":"Larsen, C.F.","contributorId":96091,"corporation":false,"usgs":true,"family":"Larsen","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":425468,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Motyka, R.J.","contributorId":49594,"corporation":false,"usgs":true,"family":"Motyka","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":425466,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arendt, A.A.","contributorId":99379,"corporation":false,"usgs":false,"family":"Arendt","given":"A.A.","email":"","affiliations":[{"id":12920,"text":"Applied Physics Laboratory, University of Washington","active":true,"usgs":false}],"preferred":false,"id":425469,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Echelmeyer, K.A.","contributorId":11781,"corporation":false,"usgs":true,"family":"Echelmeyer","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":425465,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Geissler, P.E.","contributorId":67636,"corporation":false,"usgs":true,"family":"Geissler","given":"P.E.","email":"","affiliations":[],"preferred":false,"id":425467,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030048,"text":"70030048 - 2007 - Unconventional shale-gas systems: The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030048","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Unconventional shale-gas systems: The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment","docAbstract":"Shale-gas resource plays can be distinguished by gas type and system characteristics. The Newark East gas field, located in the Fort Worth Basin, Texas, is defined by thermogenic gas production from low-porosity and low-permeability Barnett Shale. The Barnett Shale gas system, a self-contained source-reservoir system, has generated large amounts of gas in the key productive areas because of various characteristics and processes, including (1) excellent original organic richness and generation potential; (2) primary and secondary cracking of kerogen and retained oil, respectively; (3) retention of oil for cracking to gas by adsorption; (4) porosity resulting from organic matter decomposition; and (5) brittle mineralogical composition. The calculated total gas in place (GIP) based on estimated ultimate recovery that is based on production profiles and operator estimates is about 204 bcf/section (5.78 ?? 109 m3/1.73 ?? 104 m3). We estimate that the Barnett Shale has a total generation potential of about 609 bbl of oil equivalent/ac-ft or the equivalent of 3657 mcf/ac-ft (84.0 m3/m3). Assuming a thickness of 350 ft (107 m) and only sufficient hydrogen for partial cracking of retained oil to gas, a total generation potential of 820 bcf/section is estimated. Of this potential, approximately 60% was expelled, and the balance was retained for secondary cracking of oil to gas, if sufficient thermal maturity was reached. Gas storage capacity of the Barnett Shale at typical reservoir pressure, volume, and temperature conditions and 6% porosity shows a maximum storage capacity of 540 mcf/ac-ft or 159 scf/ton. Copyright ?? 2007. The American Association of Petroleum Geologists. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/12190606068","issn":"01491423","usgsCitation":"Jarvie, D., Hill, R., Ruble, T., and Pollastro, R.M., 2007, Unconventional shale-gas systems: The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment: American Association of Petroleum Geologists Bulletin, v. 91, no. 4, p. 475-499, https://doi.org/10.1306/12190606068.","startPage":"475","endPage":"499","numberOfPages":"25","costCenters":[],"links":[{"id":212875,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1306/12190606068"},{"id":240434,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbc2ee4b08c986b328aae","contributors":{"authors":[{"text":"Jarvie, D.M.","contributorId":69768,"corporation":false,"usgs":true,"family":"Jarvie","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":425459,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, R.J.","contributorId":92850,"corporation":false,"usgs":true,"family":"Hill","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":425460,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruble, T.E.","contributorId":30402,"corporation":false,"usgs":true,"family":"Ruble","given":"T.E.","email":"","affiliations":[],"preferred":false,"id":425458,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pollastro, R. M.","contributorId":6809,"corporation":false,"usgs":true,"family":"Pollastro","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":425457,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030021,"text":"70030021 - 2007 - Declustering of clustered preferential sampling for histogram and semivariogram inference","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030021","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2700,"text":"Mathematical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Declustering of clustered preferential sampling for histogram and semivariogram inference","docAbstract":"Measurements of attributes obtained more as a consequence of business ventures than sampling design frequently result in samplings that are preferential both in location and value, typically in the form of clusters along the pay. Preferential sampling requires preprocessing for the purpose of properly inferring characteristics of the parent population, such as the cumulative distribution and the semivariogram. Consideration of the distance to the nearest neighbor allows preparation of resampled sets that produce comparable results to those from previously proposed methods. Clustered sampling of size 140, taken from an exhaustive sampling, is employed to illustrate this approach. ?? International Association for Mathematical Geology 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mathematical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11004-007-9108-6","issn":"08828121","usgsCitation":"Olea, R., 2007, Declustering of clustered preferential sampling for histogram and semivariogram inference: Mathematical Geology, v. 39, no. 5, p. 453-467, https://doi.org/10.1007/s11004-007-9108-6.","startPage":"453","endPage":"467","numberOfPages":"15","costCenters":[],"links":[{"id":212961,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11004-007-9108-6"},{"id":240532,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-08-22","publicationStatus":"PW","scienceBaseUri":"5059fe12e4b0c8380cd4eada","contributors":{"authors":[{"text":"Olea, Ricardo A. 0000-0003-4308-0808","orcid":"https://orcid.org/0000-0003-4308-0808","contributorId":26436,"corporation":false,"usgs":true,"family":"Olea","given":"Ricardo A.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":425367,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70030020,"text":"70030020 - 2007 - Courtship and mating in free-living spotted hyenas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030020","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":986,"text":"Behaviour","active":true,"publicationSubtype":{"id":10}},"title":"Courtship and mating in free-living spotted hyenas","docAbstract":"Female spotted hyenas (Crocuta crocuta) are larger and more aggressive than males, and their genitalia are heavily 'masculinized'. These odd traits in females pose unusual challenges for males during courtship and copulation. Here our goals were to describe and quantify the behavior patterns involved in courtship and copulation in Crocuta, and determine whether rates of affiliative behavior directed toward females by males vary with female age, social rank, or time to conception. We also inquired whether consort formation with a particular female was necessary for a male to sire that female's cubs. Behavioral observations and paternity data based on 12 microsatellite loci were collected over 11 years from free-ranging hyenas in Kenya. Several of the courtship displays exhibited by male hyenas differed from those found in other carnivores, and appeared to reflect intense motivational conflict between tendencies to approach and flee from females. Most male advances were either ignored by females or elicited aggression from females toward males. Rates of male affiliative behavior toward females peaked around the time of conception. Although males behaved similarly toward young and old females in the highest social rank category, males directed more affiliative behavior toward older than younger females that were mid- and low-ranking. Multiple short mounts usually preceded a long mount, but intromission and ejaculation appeared to occur only during long mounts. Female receptivity was indicated by inhibited aggression toward the male and assumption of a distinctive receptive stance. The only behavior indicative of female proceptivity was following of the male by the female in mating contexts. Some males who sired cubs formed consortships with females whereas others did not, suggesting that individual male hyenas may adopt alternative reproductive tactics to attract and acquire mates. Our results also suggest that low fertility may be an important cost of female virilization in this species. ?? 2007 Brill Academic Publishers.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Behaviour","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1163/156853907781476418","issn":"00057959","usgsCitation":"Szykman, M., Van Horn, R.C., Engh, A., Boydston, E., and Holekamp, K., 2007, Courtship and mating in free-living spotted hyenas: Behaviour, v. 144, no. 7, p. 815-846, https://doi.org/10.1163/156853907781476418.","startPage":"815","endPage":"846","numberOfPages":"32","costCenters":[],"links":[{"id":212960,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1163/156853907781476418"},{"id":240531,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"144","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc8ee4b0c8380cd4e301","contributors":{"authors":[{"text":"Szykman, M.","contributorId":50858,"corporation":false,"usgs":true,"family":"Szykman","given":"M.","affiliations":[],"preferred":false,"id":425363,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Horn, R. C.","contributorId":53745,"corporation":false,"usgs":true,"family":"Van Horn","given":"R.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":425365,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Engh, A.L.","contributorId":50860,"corporation":false,"usgs":true,"family":"Engh","given":"A.L.","affiliations":[],"preferred":false,"id":425364,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boydston, E. E.","contributorId":106045,"corporation":false,"usgs":false,"family":"Boydston","given":"E. E.","affiliations":[],"preferred":false,"id":425366,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Holekamp, K.E.","contributorId":34077,"corporation":false,"usgs":true,"family":"Holekamp","given":"K.E.","affiliations":[],"preferred":false,"id":425362,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030019,"text":"70030019 - 2007 - Communication using eye roll reflective signalling","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030019","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3174,"text":"Proceedings of the Royal Society B: Biological Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Communication using eye roll reflective signalling","docAbstract":"Body reflections in the ultraviolet (UV) are a common occurrence in nature. Despite the abundance of such signals and the presence of UV cones in the retinas of many vertebrates, the function of UV cones in the majority of taxa remains unclear. Here, we report on an unusual communication system in the razorback sucker, Xyrauchen texanus, that involves flash signals produced by quick eye rolls. Behavioural experiments and field observations indicate that this form of communication is used to signal territorial presence between males. The flash signal shows highest contrast in the UV region of fhe visual spectrum (??max???380 nm), corresponding to the maximum wavelength of absorption of the UV cone mechanism in suckers. Furthermore, these cones are restricted to the dorsal retina of the animal and the upwelling light background is such that their relative sensitivity would be enhanced by chromatic adaptation of the other cone mechanisms. Thus, the UV cones in the sucker have optimal characteristics (both in terms of absorbance and retinal topography) to constitute the main detectors of the flash signal. Our findings provide the first ecological evidence for restricted distribution of UV cones in the retina of a vertebrate. ?? 2007 The Royal Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the Royal Society B: Biological Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1098/rspb.2006.0246","issn":"09628436","usgsCitation":"Flamarique, I., Mueller, G., Cheng, C., and Figiel, C., 2007, Communication using eye roll reflective signalling: Proceedings of the Royal Society B: Biological Sciences, v. 274, no. 1611, p. 877-882, https://doi.org/10.1098/rspb.2006.0246.","startPage":"877","endPage":"882","numberOfPages":"6","costCenters":[],"links":[{"id":476970,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://doi.org/10.1098/rspb.2006.0246","text":"External Repository"},{"id":212932,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1098/rspb.2006.0246"},{"id":240500,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"274","issue":"1611","noUsgsAuthors":false,"publicationDate":"2007-01-02","publicationStatus":"PW","scienceBaseUri":"5059f806e4b0c8380cd4ce2a","contributors":{"authors":[{"text":"Flamarique, I.N.","contributorId":18981,"corporation":false,"usgs":true,"family":"Flamarique","given":"I.N.","email":"","affiliations":[],"preferred":false,"id":425359,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mueller, G.A.","contributorId":9205,"corporation":false,"usgs":true,"family":"Mueller","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":425358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cheng, C.L.","contributorId":84983,"corporation":false,"usgs":true,"family":"Cheng","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":425361,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Figiel, C.R.","contributorId":53167,"corporation":false,"usgs":true,"family":"Figiel","given":"C.R.","affiliations":[],"preferred":false,"id":425360,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030017,"text":"70030017 - 2007 - The colonial ascidian Didemnum sp. A: current distribution, basic biology and potential threat to marine communities of the northeast and west coasts of North America","interactions":[],"lastModifiedDate":"2017-10-04T14:41:43","indexId":"70030017","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2277,"text":"Journal of Experimental Marine Biology and Ecology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The colonial ascidian Didemnum sp. A: current distribution, basic biology and potential threat to marine communities of the northeast and west coasts of North America","title":"The colonial ascidian Didemnum sp. A: current distribution, basic biology and potential threat to marine communities of the northeast and west coasts of North America","docAbstract":"

Didemnum sp. A is a colonial ascidian with rapidly expanding populations on the east and west coasts of North America. The origin of Didemum sp. A is unknown. Populations were first observed on the northeast coast of the U.S. in the late 1980s and on the west coast during the 1990s. It is currently undergoing a massive population explosion and is now a dominant member of many subtidal communities on both coasts. To determine Didemnum sp. A's current distribution, we conducted surveys from Maine to Virginia on the east coast and from British Columbia to southern California on the west coast of the U.S. between 1998 and 2005. In nearshore locations Didemnum sp. A currently ranges from Eastport, Maine to Shinnecock Bay, New York on the east coast. On the west coast it has been recorded from Humboldt Bay to Port San Luis in California, several sites in Puget Sound, Washington, including a heavily fouled mussel culture facility, and several sites in southwestern British Columbia on and adjacent to oyster and mussel farms. The species also occurs at deeper subtidal sites (up to 81 m) off New England, including Georges, Stellwagen and Tillies Banks. On Georges Bank numerous sites within a 230 km2 area are 50–90% covered by Didemnum sp. A; large colonies cement the pebble gravel into nearly solid mats that may smother infaunal organisms. These observations suggest that Didemnum sp. A has the potential to alter marine communities and affect economically important activities such as fishing and aquaculture.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.jembe.2006.10.020","issn":"00220981","usgsCitation":"Bullard, S., Lambert, G., Carman, M., Byrnes, J., Whitlatch, R., Ruiz, G., Miller, R.J., Harris, L., Valentine, P.C., Collie, J., Pederson, J., McNaught, D., Cohen, A., Asch, R.G., Dijkstra, J., and Heinonen, K., 2007, The colonial ascidian Didemnum sp. A: current distribution, basic biology and potential threat to marine communities of the northeast and west coasts of North America: Journal of Experimental Marine Biology and Ecology, v. 342, no. 1, p. 99-108, https://doi.org/10.1016/j.jembe.2006.10.020.","productDescription":"10 p.","startPage":"99","endPage":"108","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477099,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.uri.edu/gsofacpubs/663","text":"External Repository"},{"id":240465,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, California, Connecticut, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, 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J.","contributorId":34326,"corporation":false,"usgs":true,"family":"Byrnes","given":"J.","email":"","affiliations":[],"preferred":false,"id":425341,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Whitlatch, R.B.","contributorId":28023,"corporation":false,"usgs":true,"family":"Whitlatch","given":"R.B.","affiliations":[],"preferred":false,"id":425340,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ruiz, G.","contributorId":88956,"corporation":false,"usgs":true,"family":"Ruiz","given":"G.","email":"","affiliations":[],"preferred":false,"id":425347,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Miller, R. J.","contributorId":9225,"corporation":false,"usgs":true,"family":"Miller","given":"R.","middleInitial":"J.","affiliations":[],"preferred":false,"id":425335,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Harris, L.","contributorId":23493,"corporation":false,"usgs":true,"family":"Harris","given":"L.","affiliations":[],"preferred":false,"id":425338,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Valentine, P. C.","contributorId":46505,"corporation":false,"usgs":true,"family":"Valentine","given":"P.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":425342,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Collie, J.S.","contributorId":102217,"corporation":false,"usgs":true,"family":"Collie","given":"J.S.","affiliations":[],"preferred":false,"id":425350,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Pederson, J.","contributorId":11413,"corporation":false,"usgs":true,"family":"Pederson","given":"J.","email":"","affiliations":[],"preferred":false,"id":425336,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"McNaught, D.C.","contributorId":92871,"corporation":false,"usgs":true,"family":"McNaught","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":425348,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Cohen, A.N.","contributorId":84544,"corporation":false,"usgs":true,"family":"Cohen","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":425345,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Asch, R. G.","contributorId":65289,"corporation":false,"usgs":false,"family":"Asch","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":425343,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Dijkstra, J.","contributorId":86175,"corporation":false,"usgs":true,"family":"Dijkstra","given":"J.","email":"","affiliations":[],"preferred":false,"id":425346,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Heinonen, K.","contributorId":98117,"corporation":false,"usgs":true,"family":"Heinonen","given":"K.","email":"","affiliations":[],"preferred":false,"id":425349,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70030016,"text":"70030016 - 2007 - Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA","interactions":[],"lastModifiedDate":"2016-05-06T11:33:51","indexId":"70030016","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2411,"text":"Journal of Paleolimnology","active":true,"publicationSubtype":{"id":10}},"title":"Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA","docAbstract":"

We reconstruct postglacial lake-level history within the Lake Michigan basin using soil stratigraphy, ground-penetrating radar (GPR), sedimentology and 14C data from the Silver Lake basin, which lies adjacent to Lake Michigan. Stratigraphy in nine vibracores recovered from the floor of Silver Lake appears to reflect fluctuation of water levels in the Lake Michigan basin. Aeolian activity within the study area from 3,000 years (cal yr. B.P.) to the present was inferred from analysis of buried soils, an aerial photograph sequence, and GPR. Sediments in and around Silver Lake appear to contain a paleoenvironmental record that spans the entire post-glacial history of the Lake Michigan basin. We suggest that (1) a pre-Nipissing rather than a Nipissing barrier separated Silver Lake basin from the Lake Michigan basin, (2) that the Nipissing transgression elevated the water table in the Silver Lake basin about 6,500 cal yr. B.P., resulting in reestablishment of a lake within the basin, and (3) that recent dune migration into Silver Lake is associated with levels of Lake Michigan.

","language":"English","publisher":"Springer","doi":"10.1007/s10933-006-9053-2","issn":"09212728","usgsCitation":"Fisher, T., Loope, W., Pierce, W., and Jol, H., 2007, Big lake records preserved in a little lake's sediment: An example from Silver Lake, Michigan, USA: Journal of Paleolimnology, v. 37, no. 3, p. 365-382, https://doi.org/10.1007/s10933-006-9053-2.","productDescription":"18 p.","startPage":"365","endPage":"382","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":240464,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212899,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10933-006-9053-2"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-01-11","publicationStatus":"PW","scienceBaseUri":"5059f128e4b0c8380cd4aa86","contributors":{"authors":[{"text":"Fisher, T.G.","contributorId":67754,"corporation":false,"usgs":true,"family":"Fisher","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":425333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Loope, W.L.","contributorId":22280,"corporation":false,"usgs":true,"family":"Loope","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":425332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pierce, W.","contributorId":17493,"corporation":false,"usgs":true,"family":"Pierce","given":"W.","affiliations":[],"preferred":false,"id":425331,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jol, H.M.","contributorId":77717,"corporation":false,"usgs":true,"family":"Jol","given":"H.M.","affiliations":[],"preferred":false,"id":425334,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030014,"text":"70030014 - 2007 - Development and certification of the new SRM 695 trace elements in multi-nutrient fertilizer","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030014","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Development and certification of the new SRM 695 trace elements in multi-nutrient fertilizer","docAbstract":"During the past seven years, several states within the US have enacted regulations that limit the amounts of selected non-nutritive elements in fertilizers. Internationally, several countries, including Japan, China, and Australia, and the European Union also limit the amount of selected elements in fertilizers. The elements of interest include As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Se, and Zn. Fertilizer manufacturers and state regulatory authorities, faced with meeting and verifying these limits, need to develop analytical methods for determination of the elements of concern and to validate results obtained using these methods. Until now, there were no certified reference materials available with certified mass fraction values for all elements of interest in a blended, multi-nutrient fertilizer matrix. A new standard reference material (SRM) 695 trace elements in multi-nutrient fertilizer, has been developed to help meet these needs. SRM 695 has recently been issued with certified mass fraction values for seventeen elements, reference values for an additional five elements, and information values for two elements. The certificate of analysis includes an addendum listing percentage recovery for eight of these elements, determined using an acid-extraction inductively-coupled plasma optical-emission spectrometry (ICP-OES) method recently developed and tested by members of the Association of American Plant Food Control Officials. ?? Springer-Verlag 2007.","largerWorkTitle":"Analytical and Bioanalytical Chemistry","language":"English","doi":"10.1007/s00216-007-1124-3","issn":"16182642","usgsCitation":"MacKey, E., Cronise, M., Fales, C., Greenberg, R., Leigh, S., Long, S., Marlow, A., Murphy, K., Oflaz, R., Sieber, J., Rearick, M., Wood, L., Yu, L., Wilson, S., Briggs, P., Brown, Z.A., Budahn, J., Kane, P., and Hall, W., 2007, Development and certification of the new SRM 695 trace elements in multi-nutrient fertilizer, in Analytical and Bioanalytical Chemistry, v. 387, no. 7, p. 2401-2409, https://doi.org/10.1007/s00216-007-1124-3.","startPage":"2401","endPage":"2409","numberOfPages":"9","costCenters":[],"links":[{"id":212872,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00216-007-1124-3"},{"id":240431,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"387","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-01-30","publicationStatus":"PW","scienceBaseUri":"505a001de4b0c8380cd4f5c6","contributors":{"authors":[{"text":"MacKey, E.A.","contributorId":20160,"corporation":false,"usgs":true,"family":"MacKey","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":425309,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cronise, M.P.","contributorId":89725,"corporation":false,"usgs":true,"family":"Cronise","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":425322,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fales, C.N.","contributorId":59633,"corporation":false,"usgs":true,"family":"Fales","given":"C.N.","email":"","affiliations":[],"preferred":false,"id":425318,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Greenberg, R.R.","contributorId":45120,"corporation":false,"usgs":true,"family":"Greenberg","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":425314,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Leigh, S.D.","contributorId":45510,"corporation":false,"usgs":true,"family":"Leigh","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":425315,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Long, S.E.","contributorId":47580,"corporation":false,"usgs":true,"family":"Long","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":425316,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Marlow, A.F.","contributorId":48761,"corporation":false,"usgs":true,"family":"Marlow","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":425317,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Murphy, K.E.","contributorId":14642,"corporation":false,"usgs":true,"family":"Murphy","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":425308,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Oflaz, R.","contributorId":94865,"corporation":false,"usgs":true,"family":"Oflaz","given":"R.","email":"","affiliations":[],"preferred":false,"id":425323,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Sieber, J.R.","contributorId":44354,"corporation":false,"usgs":true,"family":"Sieber","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":425313,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Rearick, M.S.","contributorId":88156,"corporation":false,"usgs":true,"family":"Rearick","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":425321,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Wood, L.J.","contributorId":85777,"corporation":false,"usgs":true,"family":"Wood","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":425320,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Yu, L.L.","contributorId":100197,"corporation":false,"usgs":true,"family":"Yu","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":425325,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Wilson, S. 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Jr.","contributorId":98542,"corporation":false,"usgs":true,"family":"Hall","given":"W.L.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":425324,"contributorType":{"id":1,"text":"Authors"},"rank":19}]}} ,{"id":70030012,"text":"70030012 - 2007 - Impact of recent extreme Arizona storms","interactions":[],"lastModifiedDate":"2021-05-26T17:36:54.838746","indexId":"70030012","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Impact of recent extreme Arizona storms","docAbstract":"

Heavy rainfall on 27–31 July 2006 led to record flooding and triggered an historically unprecedented number of debris flows in the Santa Catalina Mountains north of Tucson, Ariz. The U.S. Geological Survey (USGS) documented record floods along four watercourses in the Tucson basin, and at least 250 hillslope failures spawned damaging debris flows in an area where less than 10 small debris flows had been documented in the past 25 years. At least 18 debris flows destroyed infrastructure in the heavily used Sabino Canyon Recreation Area (http://wwwpaztcn.wr.usgs.gov/rsch_highlight/articles/20061 l.html). In four adjacent canyons, debris flows reached the heads of alluvial fans at the boundary of the Tucson metropolitan area. While landuse planners in southeastern Arizona evaluate the potential threat of this previously little recognized hazard to residents along the mountain front, an interdisciplinary group of scientists has collaborated to better understand this extreme event.

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A.","affiliations":[],"preferred":false,"id":425298,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70029979,"text":"70029979 - 2007 - Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029979","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2932,"text":"Oecologia","active":true,"publicationSubtype":{"id":10}},"title":"Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways","docAbstract":"Most nutrient enrichment studies in aquatic systems have focused on autotrophic food webs in systems where primary producers dominate the resource base. We tested the heterotrophic response to long-term nutrient enrichment in a forested, headwater stream. Our study design consisted of 2 years of pretreatment data in a reference and treatment stream and 2 years of continuous nitrogen (N) + phosphorus addition to the treatment stream. Studies were conducted with two leaf species that differed in initial C:N, Rhododendron maximum (rhododendron) and Acer rubrum (red maple). We determined the effects of nutrient addition on detrital resources (leaf breakdown rates, litter C:N and microbial activity) and tested whether nutrient enrichment affected macroinvertebrate consumers via increased biomass. Leaf breakdown rates were ca. 1.5 and 3?? faster during the first and second years of enrichment, respectively, in the treatment stream for both leaf types. Microbial respiration rates of both leaf types were 3?? higher with enrichment, and macroinvertebrate biomass associated with leaves increased ca. 2-3?? with enrichment. The mass of N in macroinvertebrate biomass relative to leaves tended to increase with enrichment up to 6?? for red maple and up to 44?? for rhododendron leaves. Lower quality (higher C:N) rhododendron leaves exhibited greater changes in leaf nutrient content and macroinvertebrate response to nutrient enrichment than red maple leaves, suggesting a unique response by different leaf species to nutrient enrichment. Nutrient concentrations used in this study were moderate and equivalent to those in streams draining watersheds with altered land use. Thus, our results suggest that similarly moderate levels of enrichment may affect detrital resource quality and subsequently lead to altered energy and nutrient flow in detrital food webs. ?? 2006 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Oecologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00442-006-0609-7","issn":"00298549","usgsCitation":"Greenwood, J., Rosemond, A., Wallace, J., Cross, W.F., and Weyers, H., 2007, Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways: Oecologia, v. 151, no. 4, p. 637-649, https://doi.org/10.1007/s00442-006-0609-7.","startPage":"637","endPage":"649","numberOfPages":"13","costCenters":[],"links":[{"id":240462,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212897,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00442-006-0609-7"}],"volume":"151","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-12-05","publicationStatus":"PW","scienceBaseUri":"505a69c1e4b0c8380cd73ea5","contributors":{"authors":[{"text":"Greenwood, J.L.","contributorId":92870,"corporation":false,"usgs":true,"family":"Greenwood","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":425164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosemond, A.D.","contributorId":96621,"corporation":false,"usgs":true,"family":"Rosemond","given":"A.D.","affiliations":[],"preferred":false,"id":425165,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wallace, J.B.","contributorId":10871,"corporation":false,"usgs":true,"family":"Wallace","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":425162,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cross, W. F.","contributorId":15412,"corporation":false,"usgs":true,"family":"Cross","given":"W.","email":"","middleInitial":"F.","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":425163,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weyers, H.S.","contributorId":8592,"corporation":false,"usgs":true,"family":"Weyers","given":"H.S.","email":"","affiliations":[],"preferred":false,"id":425161,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030001,"text":"70030001 - 2007 - Hydrology and water quality in two mountain basins of the northeastern US: Assessing baseline conditions and effects of ski area development","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030001","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Hydrology and water quality in two mountain basins of the northeastern US: Assessing baseline conditions and effects of ski area development","docAbstract":"Mountain regions throughout the world face intense development pressures associated with recreational and tourism uses. Despite these pressures, much of the research on bio-geophysical impacts of humans in mountain regions has focused on the effects of natural resource extraction. This paper describes findings from the first 3 years of a study examining high elevation watershed processes in a region undergoing alpine resort development. Our study is designed as a paired-watershed experiment. The Ranch Brook watershed (9.6 km2) is a relatively pristine, forested watershed and serves as the undeveloped 'control' basin. West Branch (11.7 km2) encompasses an existing alpine ski resort, with approximately 17% of the basin occupied by ski trails and impervious surfaces, and an additional 7% slated for clearing and development. Here, we report results for water years 2001-2003 of streamflow and water quality dynamics for these watersheds. Precipitation increases significantly with elevation in the watersheds, and winter precipitation represents 36-46% of annual precipitation. Artificial snowmaking from water within West Branch watershed currently augments annual precipitation by only 3-4%. Water yield in the developed basin exceeded that in the control by 18-36%. Suspended sediment yield was more than two and a half times greater and fluxes of all major solutes were higher in the developed basin. Our study is the first to document the effects of existing ski area development on hydrology and water quality in the northeastern US and will serve as an important baseline for evaluating the effects of planned resort expansion activities in this area.","largerWorkTitle":"Hydrological Processes","language":"English","doi":"10.1002/hyp.6700","issn":"08856087","usgsCitation":"Wemple, B., Shanley, J., Denner, J., Ross, D., and Mills, K., 2007, Hydrology and water quality in two mountain basins of the northeastern US: Assessing baseline conditions and effects of ski area development, in Hydrological Processes, v. 21, no. 12, p. 1639-1650, https://doi.org/10.1002/hyp.6700.","startPage":"1639","endPage":"1650","numberOfPages":"12","costCenters":[],"links":[{"id":240220,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212695,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6700"}],"volume":"21","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-04-24","publicationStatus":"PW","scienceBaseUri":"505a36dde4b0c8380cd60a67","contributors":{"authors":[{"text":"Wemple, B.","contributorId":70257,"corporation":false,"usgs":true,"family":"Wemple","given":"B.","email":"","affiliations":[],"preferred":false,"id":425243,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shanley, J.","contributorId":37488,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","affiliations":[],"preferred":false,"id":425242,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Denner, J.","contributorId":31215,"corporation":false,"usgs":true,"family":"Denner","given":"J.","email":"","affiliations":[],"preferred":false,"id":425240,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ross, D.","contributorId":7049,"corporation":false,"usgs":true,"family":"Ross","given":"D.","affiliations":[],"preferred":false,"id":425239,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mills, K.","contributorId":37036,"corporation":false,"usgs":true,"family":"Mills","given":"K.","affiliations":[],"preferred":false,"id":425241,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030000,"text":"70030000 - 2007 - Detection, attribution, and sensitivity of trends toward earlier streamflow in the Sierra Nevada","interactions":[],"lastModifiedDate":"2016-07-27T12:22:06","indexId":"70030000","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2316,"text":"Journal of Geophysical Research D: Atmospheres","active":true,"publicationSubtype":{"id":10}},"title":"Detection, attribution, and sensitivity of trends toward earlier streamflow in the Sierra Nevada","docAbstract":"

Observed changes in the timing of snowmelt dominated streamflow in the western United States are often linked to anthropogenic or other external causes. We assess whether observed streamflow timing changes can be statistically attributed to external forcing, or whether they still lie within the bounds of natural (internal) variability for four large Sierra Nevada (CA) basins, at inflow points to major reservoirs. Streamflow timing is measured by \"center timing\" (CT), the day when half the annual flow has passed a given point. We use a physically based hydrology model driven by meteorological input from a global climate model to quantify the natural variability in CT trends. Estimated 50-year trends in CT due to natural climate variability often exceed estimated actual CT trends from 1950 to 1999. Thus, although observed trends in CT to date may be statistically significant, they cannot yet be statistically attributed to external influences on climate. We estimate that projected CT changes at the four major reservoir inflows will, with 90% confidence, exceed those from natural variability within 1-4 decades or 4-8 decades, depending on rates of future greenhouse gas emissions. To identify areas most likely to exhibit CT changes in response to rising temperatures, we calculate changes in CT under temperature increases from 1 to 5??. We find that areas with average winter temperatures between -2??C and -4??C are most likely to respond with significant CT shifts. Correspondingly, elevations from 2000 to 2800 in are most sensitive to temperature increases, with CT changes exceeding 45 days (earlier) relative to 1961-1990. Copyright 2007 by the American Geophysical Union.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research D: Atmospheres","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JD008088","issn":"01480227","usgsCitation":"Maurer, E., Stewart, I., Bonfils, C., Duffy, P.B., and Cayan, D., 2007, Detection, attribution, and sensitivity of trends toward earlier streamflow in the Sierra Nevada: Journal of Geophysical Research D: Atmospheres, v. 112, no. 11, https://doi.org/10.1029/2006JD008088.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":477109,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jd008088","text":"Publisher Index Page"},{"id":240219,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212694,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JD008088"}],"volume":"112","issue":"11","noUsgsAuthors":false,"publicationDate":"2007-06-13","publicationStatus":"PW","scienceBaseUri":"5059ff7de4b0c8380cd4f210","contributors":{"authors":[{"text":"Maurer, E.P.","contributorId":30338,"corporation":false,"usgs":true,"family":"Maurer","given":"E.P.","email":"","affiliations":[],"preferred":false,"id":425234,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, I.T.","contributorId":80062,"corporation":false,"usgs":true,"family":"Stewart","given":"I.T.","email":"","affiliations":[],"preferred":false,"id":425238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bonfils, Celine","contributorId":51542,"corporation":false,"usgs":true,"family":"Bonfils","given":"Celine","email":"","affiliations":[],"preferred":false,"id":425236,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Duffy, P. B.","contributorId":77742,"corporation":false,"usgs":false,"family":"Duffy","given":"P.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":425237,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cayan, D.","contributorId":49563,"corporation":false,"usgs":true,"family":"Cayan","given":"D.","email":"","affiliations":[],"preferred":false,"id":425235,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029999,"text":"70029999 - 2007 - Sizing up earthquake damage: Differing points of view","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70029999","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1829,"text":"Geotimes","active":true,"publicationSubtype":{"id":10}},"title":"Sizing up earthquake damage: Differing points of view","docAbstract":"When a catastrophic event strikes an urban area, many different professionals hit the ground running. Emergency responders respond, reporters report, and scientists and engineers collect and analyze data. Journalists and scientists may share interest in these events, but they have very different missions. To a journalist, earthquake damage is news. To a scientist or engineer, earthquake damage represents a valuable source of data that can help us understand how strongly the ground shook as well as how particular structures responded to the shaking.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geotimes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00168556","usgsCitation":"Hough, S., and Bolen, A., 2007, Sizing up earthquake damage: Differing points of view: Geotimes, v. 52, no. 7, p. 46-48.","startPage":"46","endPage":"48","numberOfPages":"3","costCenters":[],"links":[{"id":240188,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9124e4b08c986b319787","contributors":{"authors":[{"text":"Hough, S.","contributorId":54355,"corporation":false,"usgs":true,"family":"Hough","given":"S.","email":"","affiliations":[],"preferred":false,"id":425232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bolen, A.","contributorId":92057,"corporation":false,"usgs":true,"family":"Bolen","given":"A.","email":"","affiliations":[],"preferred":false,"id":425233,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}