{"pageNumber":"189","pageRowStart":"4700","pageSize":"25","recordCount":16504,"records":[{"id":70035179,"text":"70035179 - 2011 - Magnetic susceptibility as a proxy for investigating microbially mediated iron reduction","interactions":[],"lastModifiedDate":"2020-01-21T08:47:39","indexId":"70035179","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Magnetic susceptibility as a proxy for investigating microbially mediated iron reduction","docAbstract":"<p>We investigated magnetic susceptibility (MS) variations in hydrocarbon contaminated sediments. Our objective was to determine if MS can be used as an intrinsic bioremediation indicator due to the activity of iron-reducing bacteria. A contaminated and an uncontaminated core were retrieved from a site contaminated with crude oil near Bemidji, Minnesota and subsampled for MS measurements. The contaminated core revealed enriched MS zones within the hydrocarbon smear zone, which is related to iron-reduction coupled to oxidation of hydrocarbon compounds and the vadose zone, which is coincident with a zone of methane depletion suggesting aerobic or anaerobic oxidation of methane is coupled to iron-reduction. The latter has significant implications for methane cycling. We conclude that MS can serve as a proxy for intrinsic bioremediation due to the activity of iron-reducing bacteria iron-reducing bacteria and for the application of geophysics to iron cycling studies.&nbsp;</p>","language":"English","publisher":"AGU","doi":"10.1029/2011GL049271","issn":"00948276","usgsCitation":"Mewafy, F., Atekwana, E., Werkema, D., Slater, L., Ntarlagiannis, D., Revil, A., Skold, M., and Delin, G.N., 2011, Magnetic susceptibility as a proxy for investigating microbially mediated iron reduction: Geophysical Research Letters, v. 38, no. 21, 5 p., https://doi.org/10.1029/2011GL049271.","productDescription":"5 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":475135,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2011gl049271","text":"Publisher Index Page"},{"id":243195,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215395,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2011GL049271"}],"country":"United States","state":"Minnesota ","city":"Bemidji","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -95.3173828125,\n              47.30903424774781\n            ],\n            [\n              -94.537353515625,\n              47.30903424774781\n            ],\n            [\n              -94.537353515625,\n              47.754097979680026\n            ],\n            [\n              -95.3173828125,\n              47.754097979680026\n            ],\n            [\n              -95.3173828125,\n              47.30903424774781\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"38","issue":"21","noUsgsAuthors":false,"publicationDate":"2011-11-09","publicationStatus":"PW","scienceBaseUri":"505a4b8de4b0c8380cd69619","contributors":{"authors":[{"text":"Mewafy, F.M.","contributorId":54032,"corporation":false,"usgs":true,"family":"Mewafy","given":"F.M.","affiliations":[],"preferred":false,"id":449618,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atekwana, E.A.","contributorId":94504,"corporation":false,"usgs":true,"family":"Atekwana","given":"E.A.","affiliations":[],"preferred":false,"id":449623,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Werkema, D.D.","contributorId":60021,"corporation":false,"usgs":true,"family":"Werkema","given":"D.D.","affiliations":[],"preferred":false,"id":449620,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Slater, L.D.","contributorId":63229,"corporation":false,"usgs":true,"family":"Slater","given":"L.D.","email":"","affiliations":[],"preferred":false,"id":449621,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ntarlagiannis, D.","contributorId":57287,"corporation":false,"usgs":true,"family":"Ntarlagiannis","given":"D.","email":"","affiliations":[],"preferred":false,"id":449619,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Revil, A.","contributorId":49627,"corporation":false,"usgs":true,"family":"Revil","given":"A.","affiliations":[],"preferred":false,"id":449617,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Skold, M.","contributorId":71021,"corporation":false,"usgs":true,"family":"Skold","given":"M.","email":"","affiliations":[],"preferred":false,"id":449622,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Delin, Geoffrey N. 0000-0001-7991-6158 delin@usgs.gov","orcid":"https://orcid.org/0000-0001-7991-6158","contributorId":2610,"corporation":false,"usgs":true,"family":"Delin","given":"Geoffrey","email":"delin@usgs.gov","middleInitial":"N.","affiliations":[{"id":5063,"text":"Central Water Science Field Team","active":true,"usgs":true}],"preferred":true,"id":779878,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70034618,"text":"70034618 - 2011 - From deposition to erosion: Spatial and temporal variability of sediment sources, storage, and transport in a small agricultural watershed","interactions":[],"lastModifiedDate":"2017-10-30T12:54:01","indexId":"70034618","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1801,"text":"Geomorphology","active":true,"publicationSubtype":{"id":10}},"title":"From deposition to erosion: Spatial and temporal variability of sediment sources, storage, and transport in a small agricultural watershed","docAbstract":"The spatial and temporal variability of sediment sources, storage, and transport were investigated in a small agricultural watershed draining the Coast Ranges and Sacramento Valley in central California. Results of field, laboratory, and historical data analysis in the Willow Slough fluvial system document changes that transformed a transport-limited depositional system to an effective erosion and transport system, despite a large sediment supply. These changes were caused by a combination of factors: (i) an increase in transport capacity, and (ii) hydrologic alteration. Alteration of the riparian zone and drainage network pattern during the past ~ 150 years included a twofold increase in straightened channel segments along with a baselevel change from excavation that increased slope, and increased sediment transport capacity by ~ 7%. Hydrologic alteration from irrigation water contributions also increased transport capacity, by extending the period with potential for sediment transport and erosion by ~ 6 months/year. Field measurements document Quaternary Alluvium as a modern source of fine sediment with grain size distributions characterized by 5 to 40% fine material. About 60% of an upland and 30% of a lowland study reach incised into this deposit exhibit bank erosion. During this study, the wet 2006 and relatively dry 2007 water years exhibited a range of total annual suspended sediment load spanning two orders of magnitude: ~ 108,500 kg/km<sup>2</sup>/year during 2006 and 5,950 kg/km<sup>2</sup>/year during 2007, only 5% of that during the previous year. Regional implications of this work are illustrated by the potential for a small tributary such as Willow Slough to contribute sediment – whereas large dams limit sediment supply from larger tributaries – to the Sacramento River and San Francisco Bay Delta and Estuary. This work is relevant to lowland agricultural river–floodplain systems globally in efforts to restore aquatic and riparian functions and where water quality management includes reducing fine sediment contributions that can couple with other pollutants.","language":"English","publisher":"Elsevier","doi":"10.1016/j.geomorph.2011.04.037","issn":"0169555X","usgsCitation":"Florsheim, J., Pellerin, B., Oh, N., Ohara, N., Bachand, P., Bachand, S., Bergamaschi, B., Hernes, P., and Kavvas, M., 2011, From deposition to erosion: Spatial and temporal variability of sediment sources, storage, and transport in a small agricultural watershed: Geomorphology, v. 132, no. 3-4, p. 272-286, https://doi.org/10.1016/j.geomorph.2011.04.037.","productDescription":"15 p.","startPage":"272","endPage":"286","ipdsId":"IP-027109","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true}],"links":[{"id":243817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.41,32.53 ], [ -124.41,42.0 ], [ -114.13,42.0 ], [ -114.13,32.53 ], [ -124.41,32.53 ] ] ] } } ] }","volume":"132","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a13f8e4b0c8380cd5484e","contributors":{"authors":[{"text":"Florsheim, J.L.","contributorId":101876,"corporation":false,"usgs":true,"family":"Florsheim","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":446694,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pellerin, B.A.","contributorId":81233,"corporation":false,"usgs":true,"family":"Pellerin","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":446692,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Oh, N.H.","contributorId":22987,"corporation":false,"usgs":true,"family":"Oh","given":"N.H.","email":"","affiliations":[],"preferred":false,"id":446688,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ohara, N.","contributorId":60045,"corporation":false,"usgs":true,"family":"Ohara","given":"N.","email":"","affiliations":[],"preferred":false,"id":446690,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bachand, P.A.M.","contributorId":9857,"corporation":false,"usgs":true,"family":"Bachand","given":"P.A.M.","email":"","affiliations":[],"preferred":false,"id":446686,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bachand, Sandra M.","contributorId":45542,"corporation":false,"usgs":false,"family":"Bachand","given":"Sandra M.","affiliations":[{"id":12526,"text":"Bachand & Associates","active":true,"usgs":false}],"preferred":false,"id":446689,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bergamaschi, B.A. 0000-0002-9610-5581","orcid":"https://orcid.org/0000-0002-9610-5581","contributorId":22401,"corporation":false,"usgs":true,"family":"Bergamaschi","given":"B.A.","affiliations":[],"preferred":false,"id":446687,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hernes, P.J.","contributorId":89651,"corporation":false,"usgs":true,"family":"Hernes","given":"P.J.","affiliations":[],"preferred":false,"id":446693,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Kavvas, M.L.","contributorId":63642,"corporation":false,"usgs":true,"family":"Kavvas","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":446691,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70035273,"text":"70035273 - 2011 - Exchange of groundwater and surface-water mediated by permafrost response to seasonal and long term air temperature variation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035273","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Exchange of groundwater and surface-water mediated by permafrost response to seasonal and long term air temperature variation","docAbstract":"Permafrost dynamics impact hydrologic cycle processes by promoting or impeding groundwater and surface water exchange. Under seasonal and decadal air temperature variations, permafrost temperature changes control the exchanges between groundwater and surface water. A coupled heat transport and groundwater flow model, SUTRA, was modified to simulate groundwater flow and heat transport in the subsurface containing permafrost. The northern central Tibet Plateau was used as an example of model application. Modeling results show that in a yearly cycle, groundwater flow occurs in the active layer from May to October. Maximum groundwater discharge to the surface lags the maximum subsurface temperature by two months. Under an increasing air temperature scenario of 3C per 100 years, over the initial 40-year period, the active layer thickness can increase by three-fold. Annual groundwater discharge to the surface can experience a similar three-fold increase in the same period. An implication of these modeling results is that with increased warming there will be more groundwater flow in the active layer and therefore increased groundwater discharge to rivers. However, this finding only holds if sufficient upgradient water is available to replenish the increased discharge. Otherwise, there will be an overall lowering of the water table in the recharge portion of the catchment. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2011GL047911","issn":"00948276","usgsCitation":"Ge, S., McKenzie, J., Voss, C., and Wu, Q., 2011, Exchange of groundwater and surface-water mediated by permafrost response to seasonal and long term air temperature variation: Geophysical Research Letters, v. 38, no. 14, https://doi.org/10.1029/2011GL047911.","costCenters":[],"links":[{"id":475059,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2011gl047911","text":"Publisher Index Page"},{"id":243101,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215306,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2011GL047911"}],"volume":"38","issue":"14","noUsgsAuthors":false,"publicationDate":"2011-07-30","publicationStatus":"PW","scienceBaseUri":"505a0da8e4b0c8380cd53121","contributors":{"authors":[{"text":"Ge, S.","contributorId":37905,"corporation":false,"usgs":true,"family":"Ge","given":"S.","email":"","affiliations":[],"preferred":false,"id":449978,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McKenzie, J.","contributorId":30375,"corporation":false,"usgs":true,"family":"McKenzie","given":"J.","affiliations":[],"preferred":false,"id":449977,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Voss, C.","contributorId":104723,"corporation":false,"usgs":true,"family":"Voss","given":"C.","email":"","affiliations":[],"preferred":false,"id":449980,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wu, Q.","contributorId":93291,"corporation":false,"usgs":true,"family":"Wu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":449979,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034584,"text":"70034584 - 2011 - Projected evolution of California's San Francisco bay-delta-river system in a century of climate change","interactions":[],"lastModifiedDate":"2020-01-11T12:15:17","indexId":"70034584","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Projected evolution of California's San Francisco bay-delta-river system in a century of climate change","docAbstract":"Background: Accumulating evidence shows that the planet is warming as a response to human emissions of greenhouse gases. Strategies of adaptation to climate change will require quantitative projections of how altered regional patterns of temperature, precipitation and sea level could cascade to provoke local impacts such as modified water supplies, increasing risks of coastal flooding, and growing challenges to sustainability of native species. Methodology/Principal Findings: We linked a series of models to investigate responses of California's San Francisco Estuary-Watershed (SFEW) system to two contrasting scenarios of climate change. Model outputs for scenarios of fast and moderate warming are presented as 2010-2099 projections of nine indicators of changing climate, hydrology and habitat quality. Trends of these indicators measure rates of: increasing air and water temperatures, salinity and sea level; decreasing precipitation, runoff, snowmelt contribution to runoff, and suspended sediment concentrations; and increasing frequency of extreme environmental conditions such as water temperatures and sea level beyond the ranges of historical observations. Conclusions/Significance: Most of these environmental indicators change substantially over the 21st century, and many would present challenges to natural and managed systems. Adaptations to these changes will require flexible planning to cope with growing risks to humans and the challenges of meeting demands for fresh water and sustaining native biota. Programs of ecosystem rehabilitation and biodiversity conservation in coastal landscapes will be most likely to meet their objectives if they are designed from considerations that include: (1) an integrated perspective that river-estuary systems are influenced by effects of climate change operating on both watersheds and oceans; (2) varying sensitivity among environmental indicators to the uncertainty of future climates; (3) inevitability of biological community changes as responses to cumulative effects of climate change and other drivers of habitat transformations; and (4) anticipation and adaptation to the growing probability of ecosystem regime shifts.","language":"English","publisher":"PLoS","doi":"10.1371/journal.pone.0024465","issn":"19326203","usgsCitation":"Cloern, J.E., Knowles, N., Brown, L.R., Cayan, D.R., Dettinger, M., Morgan, T., Schoellhamer, D., Stacey, M., Van der Wegen, M., Wagner, R., and Jassby, A.D., 2011, Projected evolution of California's San Francisco bay-delta-river system in a century of climate change: PLoS ONE, v. 6, no. 9, e24465, 13 p., https://doi.org/10.1371/journal.pone.0024465.","productDescription":"e24465, 13 p.","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":487226,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0024465","text":"Publisher Index Page"},{"id":243755,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.09631347656249,\n              37.391981943533544\n            ],\n            [\n              -121.87683105468749,\n              37.391981943533544\n            ],\n            [\n              -121.87683105468749,\n              38.302869955150044\n            ],\n            [\n              -123.09631347656249,\n              38.302869955150044\n            ],\n            [\n              -123.09631347656249,\n              37.391981943533544\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"6","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-09-21","publicationStatus":"PW","scienceBaseUri":"505a8ef7e4b0c8380cd7f4c9","contributors":{"authors":[{"text":"Cloern, James E. 0000-0002-5880-6862 jecloern@usgs.gov","orcid":"https://orcid.org/0000-0002-5880-6862","contributorId":1488,"corporation":false,"usgs":true,"family":"Cloern","given":"James","email":"jecloern@usgs.gov","middleInitial":"E.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":446508,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knowles, Noah 0000-0001-5652-1049 nknowles@usgs.gov","orcid":"https://orcid.org/0000-0001-5652-1049","contributorId":1380,"corporation":false,"usgs":true,"family":"Knowles","given":"Noah","email":"nknowles@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":446509,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Larry R. 0000-0001-6702-4531 lrbrown@usgs.gov","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":1717,"corporation":false,"usgs":true,"family":"Brown","given":"Larry","email":"lrbrown@usgs.gov","middleInitial":"R.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":446510,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cayan, Daniel R. 0000-0002-2719-6811 drcayan@usgs.gov","orcid":"https://orcid.org/0000-0002-2719-6811","contributorId":1494,"corporation":false,"usgs":true,"family":"Cayan","given":"Daniel","email":"drcayan@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":false,"id":446506,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dettinger, Michael D. 0000-0002-7509-7332 mddettin@usgs.gov","orcid":"https://orcid.org/0000-0002-7509-7332","contributorId":146383,"corporation":false,"usgs":true,"family":"Dettinger","given":"Michael D.","email":"mddettin@usgs.gov","affiliations":[],"preferred":false,"id":446513,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Morgan, Tara L. 0000-0001-5632-5232","orcid":"https://orcid.org/0000-0001-5632-5232","contributorId":29124,"corporation":false,"usgs":true,"family":"Morgan","given":"Tara L.","affiliations":[],"preferred":false,"id":446507,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Schoellhamer, David H. 0000-0001-9488-7340 dschoell@usgs.gov","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":631,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"David H.","email":"dschoell@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":446512,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Stacey, Mark T.","contributorId":13367,"corporation":false,"usgs":true,"family":"Stacey","given":"Mark T.","affiliations":[],"preferred":false,"id":446511,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Van der Wegen, Mick","contributorId":191095,"corporation":false,"usgs":false,"family":"Van der Wegen","given":"Mick","email":"","affiliations":[],"preferred":false,"id":446514,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Wagner, R.W.","contributorId":48784,"corporation":false,"usgs":true,"family":"Wagner","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":446505,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Jassby, Alan D.","contributorId":66403,"corporation":false,"usgs":true,"family":"Jassby","given":"Alan","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":446504,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70035298,"text":"70035298 - 2011 - Impacts of agricultural land use on biological integrity: A causal analysis","interactions":[],"lastModifiedDate":"2021-02-25T18:59:27.608483","indexId":"70035298","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Impacts of agricultural land use on biological integrity: A causal analysis","docAbstract":"<p><span>Agricultural land use has often been linked to nutrient enrichment, habitat degradation, hydrologic alteration, and loss of biotic integrity in streams. The U.S. Geological Survey's National Water Quality Assessment Program sampled 226 stream sites located in eight agriculture‐dominated study units across the United States to investigate the geographic variability and causes of agricultural impacts on stream biotic integrity. In this analysis we used structural equation modeling (SEM) to develop a national and set of regional causal models linking agricultural land use to measured instream conditions. We then examined the direct, indirect, and total effects of agriculture on biotic integrity as it acted through multiple water quality and habitat pathways. In our nation‐wide model, cropland affected benthic communities by both altering structural habitats and by imposing water quality‐related stresses. Region‐specific modeling demonstrated that geographic context altered the relative importance of causal pathways through which agricultural activities affected stream biotic integrity. Cropland had strong negative total effects on the invertebrate community in the national, Midwest, and Western models, but a very weak effect in the Eastern Coastal Plain model. In the Western Arid and Eastern Coastal Plain study regions, cropland impacts were transmitted primarily through dissolved water quality contaminants, but in the Midwestern region, they were transmitted primarily through particulate components of water quality. Habitat effects were important in the Western Arid model, but negligible in the Midwest and Eastern Coastal Plain models. The relative effects of riparian forested wetlands also varied regionally, having positive effects on biotic integrity in the Eastern Coastal Plain and Western Arid region models, but no statistically significant effect in the Midwest. These differences in response to cropland and riparian cover suggest that best management practices and planning for the mitigation of agricultural land use impacts on stream ecosystems should be regionally focused.</span></p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/11-0077.1","issn":"10510761","usgsCitation":"Riseng, C., Wiley, M., Black, R.W., and Munn, M., 2011, Impacts of agricultural land use on biological integrity: A causal analysis: Ecological Applications, v. 21, no. 8, p. 3128-3146, https://doi.org/10.1890/11-0077.1.","productDescription":"19 p.","startPage":"3128","endPage":"3146","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":475137,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/2027.42/116919","text":"External Repository"},{"id":383621,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a38e0e4b0c8380cd61706","contributors":{"authors":[{"text":"Riseng, C.M.","contributorId":9481,"corporation":false,"usgs":true,"family":"Riseng","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":450072,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wiley, M.J.","contributorId":68976,"corporation":false,"usgs":true,"family":"Wiley","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":450073,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Black, Robert W. 0000-0002-4748-8213 rwblack@usgs.gov","orcid":"https://orcid.org/0000-0002-4748-8213","contributorId":1820,"corporation":false,"usgs":true,"family":"Black","given":"Robert","email":"rwblack@usgs.gov","middleInitial":"W.","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":450075,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Munn, M.D.","contributorId":77908,"corporation":false,"usgs":true,"family":"Munn","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":450074,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70189939,"text":"70189939 - 2011 - Mechanics of flow and sediment transport in delta distributary channels","interactions":[],"lastModifiedDate":"2018-04-04T11:34:11","indexId":"70189939","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Mechanics of flow and sediment transport in delta distributary channels","docAbstract":"Predicting the planform and dimensions of a channel downstream from a confluence of two smaller channels with known sediment and water supplies is a fundamental, well-studied problem in geomorphology and engineering. An analogous but less well understood problem is found\nwell downstream of such confluences, where large river channels split into two or more distributary channels on a river delta. In this case, both the flow and sediment supplies in the downstream distributaries are set by the dynamics near the bifurcation of the upstream channel and by downstream\nboundary conditions. Over time, the pattern of erosion and deposition in the distributary channels gives rise to variations in the amount of water and sediment routed into them. In the simplest case, this results in channel switching on deltas, but in a more general sense these dynamics produce a rich suite of interesting morphologic change contributing both to the evolution of the channel distributary network and the overall evolution of the delta. As part of a study to develop a better understanding of these processes, we conducted a field study measuring the detailed morphology of the Hong-Luoc junction on the Red River downstream of Hanoi, Vietnam. This junction was selected for such a study because it has a 1,000-year history, modern observations suggest that it is currently switching (changing the proportion of sediment and streamflow provided to each of the distributary channels), and hydrologic configuration of the junction allows for the study of two bifurcations and one confluence in a single junction complex. In this paper, our morphologic observations are used in computational flow models to show how flow and sediment transport changes as a function of total discharge upstream of the junction. This is a key component of understanding how the junction attains stability over a range of flows or how imbalances in the distribution of flow and sediment transport lead to destabilization of the channel bifurcation.","conferenceTitle":"2011 EIT International Conference on Water Resources Engineering","language":"English","publisher":"Proceeding of the 2011 EIT International Conference on Water Resources Engineering","usgsCitation":"Nelson, J.M., Kinzel, P.J., Duc Toan, D., Shimizu, Y., and McDonald, R.R., 2011, Mechanics of flow and sediment transport in delta distributary channels, 2011 EIT International Conference on Water Resources Engineering, p. 8-14.","productDescription":"7 p.","startPage":"8","endPage":"14","ipdsId":"IP-030356","costCenters":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":353146,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5afef572e4b0da30c1bfc90e","contributors":{"authors":[{"text":"Nelson, Jonathan M. 0000-0002-7632-8526 jmn@usgs.gov","orcid":"https://orcid.org/0000-0002-7632-8526","contributorId":2812,"corporation":false,"usgs":true,"family":"Nelson","given":"Jonathan","email":"jmn@usgs.gov","middleInitial":"M.","affiliations":[{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":706822,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kinzel, Paul J. 0000-0002-6076-9730 pjkinzel@usgs.gov","orcid":"https://orcid.org/0000-0002-6076-9730","contributorId":743,"corporation":false,"usgs":true,"family":"Kinzel","given":"Paul","email":"pjkinzel@usgs.gov","middleInitial":"J.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":706823,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Duc Toan, Duong","contributorId":195348,"corporation":false,"usgs":false,"family":"Duc Toan","given":"Duong","affiliations":[],"preferred":false,"id":706825,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shimizu, Yasuyuki","contributorId":28875,"corporation":false,"usgs":false,"family":"Shimizu","given":"Yasuyuki","affiliations":[{"id":25249,"text":"Univ. of Hokkaido, Sapporo,Japan","active":true,"usgs":false}],"preferred":false,"id":706827,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McDonald, Richard R. 0000-0002-0703-0638 rmcd@usgs.gov","orcid":"https://orcid.org/0000-0002-0703-0638","contributorId":2428,"corporation":false,"usgs":true,"family":"McDonald","given":"Richard","email":"rmcd@usgs.gov","middleInitial":"R.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":732671,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034573,"text":"70034573 - 2011 - Mercury export from the Yukon River Basin and potential response to a changing climate","interactions":[],"lastModifiedDate":"2018-11-15T10:02:09","indexId":"70034573","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","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":"Mercury export from the Yukon River Basin and potential response to a changing climate","docAbstract":"<p><span>We measured mercury (Hg) concentrations and calculated export and yield from the Yukon River Basin (YRB) to quantify Hg flux from a large, permafrost-dominated, high-latitude watershed. Exports of Hg averaged 4400 kg Hg yr</span><sup>–1</sup><span>. The average annual yield for the YRB during the study period was 5.17 μg m</span><sup>–2</sup><span><span>&nbsp;</span>yr</span><sup>–1</sup><span>, which is 3–32 times more than Hg yields reported for 8 other major northern hemisphere river basins. The vast majority (90%) of Hg export is associated with particulates. Half of the annual export of Hg occurred during the spring with about 80% of 34 samples exceeding the U.S. EPA Hg standard for adverse chronic effects to biota. Dissolved and particulate organic carbon exports explained 81% and 50%, respectively, of the variance in Hg exports, and both were significantly (</span><i>p</i><span><span>&nbsp;</span>&lt; 0.001) correlated with water discharge. Recent measurements indicate that permafrost contains a substantial reservoir of Hg. Consequently, climate warming will likely accelerate the mobilization of Hg from thawing permafrost increasing the export of organic carbon associated Hg and thus potentially exacerbating the production of bioavailable methylmercury from permafrost-dominated northern river basins.</span></p>","language":"English","publisher":"ACS Publications","doi":"10.1021/es202068b","usgsCitation":"Schuster, P.F., Striegl, R.G., Aiken, G.R., Krabbenhoft, D., Dewild, J.F., Butler, K., Kamark, B., and Dornblaser, M., 2011, Mercury export from the Yukon River Basin and potential response to a changing climate: Environmental Science & Technology, v. 45, no. 21, p. 9262-9267, https://doi.org/10.1021/es202068b.","productDescription":"6 p.","startPage":"9262","endPage":"9267","numberOfPages":"6","costCenters":[{"id":381,"text":"Mercury Research Laboratory","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":350828,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"21","noUsgsAuthors":false,"publicationDate":"2011-10-06","publicationStatus":"PW","scienceBaseUri":"505a5404e4b0c8380cd6ce66","contributors":{"authors":[{"text":"Schuster, P. F.","contributorId":117616,"corporation":false,"usgs":true,"family":"Schuster","given":"P.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":513987,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":false,"id":513990,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aiken, G. R.","contributorId":118978,"corporation":false,"usgs":true,"family":"Aiken","given":"G.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":513989,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":118001,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David P.","email":"dpkrabbe@usgs.gov","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":513988,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dewild, J. F.","contributorId":119858,"corporation":false,"usgs":true,"family":"Dewild","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":513991,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Butler, K.","contributorId":73842,"corporation":false,"usgs":true,"family":"Butler","given":"K.","affiliations":[],"preferred":false,"id":513985,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kamark, B.","contributorId":83758,"corporation":false,"usgs":true,"family":"Kamark","given":"B.","affiliations":[],"preferred":false,"id":513986,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Dornblaser, M.","contributorId":39605,"corporation":false,"usgs":true,"family":"Dornblaser","given":"M.","email":"","affiliations":[],"preferred":false,"id":513984,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70034541,"text":"70034541 - 2011 - Landscape evolution in south-central Minnesota and the role of geomorphic history on modern erosional processes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70034541","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Landscape evolution in south-central Minnesota and the role of geomorphic history on modern erosional processes","docAbstract":"The Minnesota River Valley was carved during catastrophic drainage of glacial Lake Agassiz at the end of the late Pleistocene. The ensuing base-level drop on tributaries created knickpoints that excavated deep valleys as they migrated upstream. A sediment budget compiled in one of these tributaries, the Le Sueur River, shows that these deep valleys are now the primary source of sediment to the Minnesota River. To compare modern sediment loads with pre-European settlement erosion rates, we analyzed incision history using fluvial terrace ages to constrain a valley incision model. Results indicate that even thoughthe dominant sediment sources are derived from natural sources (bluffs, ravines, and streambanks), erosion rates have increased substantially, due in part to pervasive changes in watershed hydrology.","largerWorkTitle":"GSA Today","language":"English","doi":"10.1130/G121A.1","issn":"10525173","usgsCitation":"Gran, K., Belmont, P., Day, S., Finnegan, N., Jennings, C., Lauer, J., and Wilcock, P., 2011, Landscape evolution in south-central Minnesota and the role of geomorphic history on modern erosional processes, <i>in</i> GSA Today, v. 21, no. 9, p. 7-9, https://doi.org/10.1130/G121A.1.","startPage":"7","endPage":"9","numberOfPages":"3","costCenters":[],"links":[{"id":243566,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215743,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G121A.1"}],"volume":"21","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a440ee4b0c8380cd66800","contributors":{"authors":[{"text":"Gran, K.B.","contributorId":44688,"corporation":false,"usgs":true,"family":"Gran","given":"K.B.","affiliations":[],"preferred":false,"id":446303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Belmont, P.","contributorId":67322,"corporation":false,"usgs":true,"family":"Belmont","given":"P.","email":"","affiliations":[],"preferred":false,"id":446304,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day, S.S.","contributorId":42805,"corporation":false,"usgs":true,"family":"Day","given":"S.S.","email":"","affiliations":[],"preferred":false,"id":446302,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Finnegan, N.","contributorId":106727,"corporation":false,"usgs":true,"family":"Finnegan","given":"N.","email":"","affiliations":[],"preferred":false,"id":446307,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jennings, C.","contributorId":78536,"corporation":false,"usgs":true,"family":"Jennings","given":"C.","email":"","affiliations":[],"preferred":false,"id":446305,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lauer, J.W.","contributorId":104303,"corporation":false,"usgs":true,"family":"Lauer","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":446306,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wilcock, P.R.","contributorId":36709,"corporation":false,"usgs":true,"family":"Wilcock","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":446301,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70034509,"text":"70034509 - 2011 - In situ rates of sulfate reduction in response to geochemical perturbations","interactions":[],"lastModifiedDate":"2020-01-28T14:06:23","indexId":"70034509","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"In situ rates of sulfate reduction in response to geochemical perturbations","docAbstract":"<p>Rates of in situ microbial sulfate reduction in response to geochemical perturbations were determined using Native Organism Geochemical Experimentation Enclosures (NOGEEs), a new in situ technique developed to facilitate evaluation of controls on microbial reaction rates. NOGEEs function by first trapping a native microbial community in situ and then subjecting it to geochemical perturbations through the introduction of various test solutions. On three occasions, NOGEEs were used at the Norman Landfill research site in Norman, Oklahoma, to evaluate sulfate-reduction rates in wetland sediments impacted by landfill leachate. The initial experiment, in May 2007, consisted of five introductions of a sulfate test solution over 11 d. Each test stimulated sulfate reduction with rates increasing until an apparent maximum was achieved. Two subsequent experiments, conducted in October 2007 and February 2008, evaluated the effects of concentration on sulfate-reduction rates. Results from these experiments showed that faster sulfate-reduction rates were associated with increased sulfate concentrations. Understanding variability in sulfate-reduction rates in response to perturbations may be an important factor in predicting rates of natural attenuation and bioremediation of contaminants in systems not at biogeochemical equilibrium.&nbsp;</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.2010.00782.x","issn":"0017467X","usgsCitation":"Kneeshaw, T., McGuire, J., Cozzarelli, I.M., and Smith, E., 2011, In situ rates of sulfate reduction in response to geochemical perturbations: Ground Water, v. 49, no. 6, p. 903-913, https://doi.org/10.1111/j.1745-6584.2010.00782.x.","productDescription":"11 p.","startPage":"903","endPage":"913","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243596,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-01-04","publicationStatus":"PW","scienceBaseUri":"505a3985e4b0c8380cd6195b","contributors":{"authors":[{"text":"Kneeshaw, T.A.","contributorId":78552,"corporation":false,"usgs":true,"family":"Kneeshaw","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":446140,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, J.T.","contributorId":17023,"corporation":false,"usgs":true,"family":"McGuire","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":446138,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":780606,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, E.W.","contributorId":15411,"corporation":false,"usgs":true,"family":"Smith","given":"E.W.","email":"","affiliations":[],"preferred":false,"id":446137,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034482,"text":"70034482 - 2011 - Refuge habitats for fishes during seasonal drying in an intermittent stream: Movement, survival and abundance of three minnow species","interactions":[],"lastModifiedDate":"2021-04-19T20:41:47.368478","indexId":"70034482","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":873,"text":"Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Refuge habitats for fishes during seasonal drying in an intermittent stream: Movement, survival and abundance of three minnow species","docAbstract":"<p><span>Drought and summer drying can be important disturbance events in many small streams leading to intermittent or isolated habitats. We examined what habitats act as refuges for fishes during summer drying, hypothesizing that pools would act as refuge habitats. We predicted that during drying fish would show directional movement into pools from riffle habitats, survival rates would be greater in pools than in riffles, and fish abundance would increase in pool habitats. We examined movement, survival and abundance of three minnow species, bigeye shiner (</span><i>Notropis boops</i><span>), highland stoneroller (</span><i>Campostoma spadiceum</i><span>) and creek chub (</span><i>Semotilus atromaculatus</i><span>), during seasonal stream drying in an Ozark stream using a closed robust multi-strata mark-recapture sampling. Population parameters were estimated using plausible models within program MARK, where a priori models are ranked using Akaike’s Information Criterion. Creek chub showed directional movement into pools and increased survival and abundance in pools during drying. Highland stonerollers showed strong directional movement into pools and abundance increased in pools during drying, but survival rates were not significantly greater in pools than riffles. Bigeye shiners showed high movement rates during drying, but the movement was non-directional, and survival rates were greater in riffles than pools. Therefore, creek chub supported our hypothesis and pools appear to act as refuge habitats for this species, whereas highland stonerollers partly supported the hypothesis and bigeye shiners did not support the pool refuge hypothesis. Refuge habitats during drying are species dependent. An urgent need exists to further understand refuge habitats in streams given projected changes in climate and continued alteration of hydrological regimes.</span></p>","language":"English","publisher":"Springer Link","doi":"10.1007/s00027-011-0206-7","issn":"10151621","usgsCitation":"Hodges, S., and Magoulick, D., 2011, Refuge habitats for fishes during seasonal drying in an intermittent stream: Movement, survival and abundance of three minnow species: Aquatic Sciences, v. 73, no. 4, p. 513-522, https://doi.org/10.1007/s00027-011-0206-7.","productDescription":"10 p.","startPage":"513","endPage":"522","costCenters":[],"links":[{"id":243718,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215883,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00027-011-0206-7"}],"volume":"73","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-05-17","publicationStatus":"PW","scienceBaseUri":"50e4a450e4b0e8fec6cdbb25","contributors":{"authors":[{"text":"Hodges, S.W.","contributorId":98563,"corporation":false,"usgs":true,"family":"Hodges","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":446028,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Magoulick, D.D.","contributorId":80862,"corporation":false,"usgs":true,"family":"Magoulick","given":"D.D.","affiliations":[],"preferred":false,"id":446027,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034477,"text":"70034477 - 2011 - A computer program for flow-log analysis of single holes (FLASH)","interactions":[],"lastModifiedDate":"2020-01-11T11:33:46","indexId":"70034477","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"A computer program for flow-log analysis of single holes (FLASH)","docAbstract":"<p>A new computer program, FLASH (Flow-Log Analysis of Single Holes), is presented for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady-state multilayer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multilayer aquifers. Given vertical flow profiles collected under both ambient and stressed (pumping or injection) conditions, the user can estimate fracture (or layer) transmissivities and far-field hydraulic heads. FLASH is coded in Microsoft Excel with Visual Basic for Applications routines. The code supports manual and automated model calibration.</p>","language":"English","publisher":"National Groundwater Association","doi":"10.1111/j.1745-6584.2011.00798.x","issn":"0017467X","usgsCitation":"Day-Lewis, F., Johnson, C., Paillet, F.L., and Halford, K.J., 2011, A computer program for flow-log analysis of single holes (FLASH): Ground Water, v. 49, no. 6, p. 926-931, https://doi.org/10.1111/j.1745-6584.2011.00798.x.","productDescription":"6 p.","startPage":"926","endPage":"931","numberOfPages":"6","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":438829,"rank":1,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/F7319SZC","text":"USGS data release","linkHelpText":"FLASH: A Computer Program for Flow-Log Analysis of Single Holes"},{"id":243652,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-02-09","publicationStatus":"PW","scienceBaseUri":"5059e2d3e4b0c8380cd45c8c","contributors":{"authors":[{"text":"Day-Lewis, F. D. 0000-0003-3526-886X","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":35773,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"F. D.","affiliations":[],"preferred":false,"id":446004,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, C. D.","contributorId":8120,"corporation":false,"usgs":true,"family":"Johnson","given":"C. D.","affiliations":[],"preferred":false,"id":446003,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paillet, Frederick L.","contributorId":63820,"corporation":false,"usgs":true,"family":"Paillet","given":"Frederick","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":446006,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Halford, K. J. 0000-0002-7322-1846","orcid":"https://orcid.org/0000-0002-7322-1846","contributorId":61077,"corporation":false,"usgs":true,"family":"Halford","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":446005,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70035362,"text":"70035362 - 2011 - Effect of tidal fluctuations on transient dispersion of simulated contaminant concentrations in coastal aquifers","interactions":[],"lastModifiedDate":"2026-01-27T18:49:50.904694","indexId":"70035362","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Effect of tidal fluctuations on transient dispersion of simulated contaminant concentrations in coastal aquifers","docAbstract":"<p>Variable-density groundwater models require extensive computational resources, particularly for simulations representing short-term hydrologic variability such as tidal fluctuations. Saltwater-intrusion models usually neglect tidal fluctuations and this may introduce errors in simulated concentrations. The effects of tides on simulated concentrations in a coastal aquifer were assessed. Three analyses are reported: in the first, simulations with and without tides were compared for three different dispersivity values. Tides do not significantly affect the transfer of a hypothetical contaminant into the ocean; however, the concentration difference between tidal and non-tidal simulations could be as much as 15%. In the second analysis, the dispersivity value for the model without tides was increased in a zone near the ocean boundary. By slightly increasing dispersivity in this zone, the maximum concentration difference between the simulations with and without tides was reduced to as low as 7%. In the last analysis, an apparent dispersivity value was calculated for each model cell using the simulated velocity variations from the model with tides. Use of apparent dispersivity values in models with a constant ocean boundary seems to provide a reasonable approach for approximating tidal effects in simulations where explicit representation of tidal fluctuations is not feasible.</p>","language":"English, French, Spanish","doi":"10.1007/s10040-011-0763-9","issn":"14312174","usgsCitation":"La Licata, I., Langevin, C.D., Dausman, A.M., and Alberti, L., 2011, Effect of tidal fluctuations on transient dispersion of simulated contaminant concentrations in coastal aquifers: Hydrogeology Journal, v. 19, no. 7, p. 1313-1322, https://doi.org/10.1007/s10040-011-0763-9.","productDescription":"10 p.","startPage":"1313","endPage":"1322","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":242940,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215161,"rank":2,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-011-0763-9"}],"volume":"19","issue":"7","noUsgsAuthors":false,"publicationDate":"2011-07-21","publicationStatus":"PW","scienceBaseUri":"505a0625e4b0c8380cd51108","contributors":{"authors":[{"text":"La Licata, Ivana","contributorId":15922,"corporation":false,"usgs":true,"family":"La Licata","given":"Ivana","email":"","affiliations":[],"preferred":false,"id":450334,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langevin, Christian D. 0000-0001-5610-9759 langevin@usgs.gov","orcid":"https://orcid.org/0000-0001-5610-9759","contributorId":1030,"corporation":false,"usgs":true,"family":"Langevin","given":"Christian","email":"langevin@usgs.gov","middleInitial":"D.","affiliations":[{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":450332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dausman, Alyssa M. adausman@usgs.gov","contributorId":1545,"corporation":false,"usgs":true,"family":"Dausman","given":"Alyssa","email":"adausman@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":false,"id":450335,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Alberti, Luca","contributorId":34817,"corporation":false,"usgs":true,"family":"Alberti","given":"Luca","email":"","affiliations":[],"preferred":false,"id":450333,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70036492,"text":"70036492 - 2011 - Wetland vegetation in Manzala lagoon, Nile Delta coast, Egypt: Rapid responses of pollen to altered nile hydrology and land use","interactions":[],"lastModifiedDate":"2021-01-08T17:43:46.295068","indexId":"70036492","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Wetland vegetation in Manzala lagoon, Nile Delta coast, Egypt: Rapid responses of pollen to altered nile hydrology and land use","docAbstract":"<p><span>The pollen record in a sediment core from Manzala lagoon on the Nile delta coastal margin of Egypt, deposited from&nbsp;</span><i>ca.</i><span>&nbsp;AD 1860 to 1990, indicates rapid coastal wetland vegetation responses to two primary periods of human activity. These are associated with artificially altered Nile hydrologic regimes in proximal areas and distal sectors located to ∼1200&nbsp;km south of Manzala. Freshwater wetland plants that were dominant, such as&nbsp;</span><i>Typha</i><span>&nbsp;and&nbsp;</span><i>Phragmites</i><span>, decreased rapidly, whereas in the early 1900s, brackish water wetland species (</span><i>e.g.</i><span>, Amaranthaceae) increased. This change occurred after closure of the Aswan Low Dam in 1902. The second major modification in the pollen record occurred in the early 1970s, after Aswan High Dam closure from 1965 to 1970, when&nbsp;</span><i>Typha</i><span>&nbsp;pollen abundance increased rapidly. Massive population growth occurred along the Nile during the 130&nbsp;years represented by the core section. During this time, the total volume of lagoon water decreased because of conversion of wetland areas to agricultural land, and input of organic-rich sediment, sewage (municipal, agricultural, industrial), and fertilizer in Manzala lagoon increased markedly. Although the wetland plant community has continued to respond to increasingly intensified and varied human-induced pressures in proximal sectors, the two most marked changes in Manzala pollen best correlate with distal events (</span><i>i.e.</i><span>, closure of the two dams at Aswan). The study also shows that the two major vegetation changes in Manzala lagoon each occurred less than 10&nbsp;years after closure upriver of the Low and High dams that markedly altered the Nile regime from Upper Egypt to the coast.</span></p>","language":"English","publisher":"BioOne","doi":"10.2112/10A-00001.1","issn":"07490208","usgsCitation":"Bernhardt, C., Stanley, J., and Horton, B.P., 2011, Wetland vegetation in Manzala lagoon, Nile Delta coast, Egypt: Rapid responses of pollen to altered nile hydrology and land use: Journal of Coastal Research, v. 27, no. 4, p. 731-737, https://doi.org/10.2112/10A-00001.1.","productDescription":"7 p.","startPage":"731","endPage":"737","costCenters":[],"links":[{"id":246452,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218442,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2112/10A-00001.1"}],"country":"Egypt","otherGeospatial":"Manzala Lagoon","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              31.716156005859375,\n              30.99173704508671\n            ],\n            [\n              32.416534423828125,\n              30.99173704508671\n            ],\n            [\n              32.416534423828125,\n              31.60310089533651\n            ],\n            [\n              31.716156005859375,\n              31.60310089533651\n            ],\n            [\n              31.716156005859375,\n              30.99173704508671\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"27","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd024e4b08c986b32ecc8","contributors":{"authors":[{"text":"Bernhardt, C.E.","contributorId":65554,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":456404,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stanley, J.-D.","contributorId":19001,"corporation":false,"usgs":true,"family":"Stanley","given":"J.-D.","email":"","affiliations":[],"preferred":false,"id":456403,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Horton, B. P.","contributorId":96816,"corporation":false,"usgs":false,"family":"Horton","given":"B.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":456405,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034840,"text":"70034840 - 2011 - Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler","interactions":[],"lastModifiedDate":"2017-12-20T13:07:41","indexId":"70034840","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler","docAbstract":"<p>A negative bias in discharge measurements made with an acoustic Doppler current profiler (ADCP) can be caused by the movement of sediment on or near the streambed. The integration of a global positioning system (GPS) to track the movement of the ADCP can be used to avoid the systematic negative bias associated with a moving streambed. More than 500 discharge transects from 63 discharge measurements with GPS data were collected at sites throughout the US, Canada, and New Zealand with no moving bed to compare GPS and bottom-track-referenced discharges. Although the data indicated some statistical bias depending on site conditions and type of GPS data used, these biases were typically about 0.5% or less. An assessment of differential correction sources was limited by a lack of data collected in a range of different correction sources and different GPS receivers at the same sites. Despite this limitation, the data indicate that the use of Wide Area Augmentation System (WAAS) corrected positional data is acceptable for discharge measurements using GGA as the boat-velocity reference. The discharge data based on GPS-referenced boat velocities from the VTG data string, which does not require differential correction, were comparable to the discharges based on GPS-referenced boat velocities from the differentially-corrected GGA data string. Spatial variability of measure discharges referenced to GGA, VTG and bottom-tracking is higher near the channel banks. The spatial variability of VTG-referenced discharges is correlated with the spatial distribution of maximum Horizontal Dilution of Precision (HDOP) values and the spatial variability of GGA-referenced discharges is correlated with proximity to channel banks.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2011.02.025","issn":"00221694","usgsCitation":"Wagner, C., and Mueller, D.S., 2011, Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler: Journal of Hydrology, v. 401, no. 3-4, p. 250-258, https://doi.org/10.1016/j.jhydrol.2011.02.025.","productDescription":"9 p.","startPage":"250","endPage":"258","costCenters":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true}],"links":[{"id":243801,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"401","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f853e4b0c8380cd4d015","contributors":{"authors":[{"text":"Wagner, Chad R. 0000-0002-9602-7413 cwagner@usgs.gov","orcid":"https://orcid.org/0000-0002-9602-7413","contributorId":1530,"corporation":false,"usgs":true,"family":"Wagner","given":"Chad R.","email":"cwagner@usgs.gov","affiliations":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true},{"id":38131,"text":"WMA - Office of Planning and Programming","active":true,"usgs":true}],"preferred":false,"id":447888,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mueller, David S. dmueller@usgs.gov","contributorId":1499,"corporation":false,"usgs":true,"family":"Mueller","given":"David","email":"dmueller@usgs.gov","middleInitial":"S.","affiliations":[{"id":502,"text":"Office of Surface Water","active":true,"usgs":true}],"preferred":true,"id":447887,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70036485,"text":"70036485 - 2011 - Estimation of mussel population response to hydrologic alteration in a southeastern U.S. stream","interactions":[],"lastModifiedDate":"2021-01-08T18:43:19.217828","indexId":"70036485","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1547,"text":"Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of mussel population response to hydrologic alteration in a southeastern U.S. stream","docAbstract":"<p><span>The southeastern United States has experienced severe, recurrent drought, rapid human population growth, and increasing agricultural irrigation during recent decades, resulting in greater demand for the water resources. During the same time period, freshwater mussels (</span><i>Unioniformes</i><span>) in the region have experienced substantial population declines. Consequently, there is growing interest in determining how mussel population declines are related to activities associated with water resource development. Determining the causes of mussel population declines requires, in part, an understanding of the factors influencing mussel population dynamics. We developed Pradel reverse-time, tag-recapture models to estimate survival, recruitment, and population growth rates for three federally endangered mussel species in the Apalachicola–Chattahoochee–Flint River Basin, Georgia. The models were parameterized using mussel tag-recapture data collected over five consecutive years from Sawhatchee Creek, located in southwestern Georgia. Model estimates indicated that mussel survival was strongly and negatively related to high flows during the summer, whereas recruitment was strongly and positively related to flows during the spring and summer. Using these models, we simulated mussel population dynamics under historic (1940–1969) and current (1980–2008) flow regimes and under increasing levels of water use to evaluate the relative effectiveness of alternative minimum flow regulations. The simulations indicated that the probability of simulated mussel population extinction was at least 8 times greater under current hydrologic regimes. In addition, simulations of mussel extinction under varying levels of water use indicated that the relative risk of extinction increased with increased water use across a range of minimum flow regulations. The simulation results also indicated that our estimates of the effects of water use on mussel extinction were influenced by the assumptions about the dynamics of the system, highlighting the need for further study of mussel population dynamics.</span></p>","language":"English","publisher":"Springer Link","doi":"10.1007/s00267-011-9688-2","issn":"0364152X","usgsCitation":"Peterson, J., Wisniewski, J., Shea, C., and Rhett, J.C., 2011, Estimation of mussel population response to hydrologic alteration in a southeastern U.S. stream: Environmental Management, v. 48, no. 1, p. 109-122, https://doi.org/10.1007/s00267-011-9688-2.","productDescription":"14 p.","startPage":"109","endPage":"122","ipdsId":"IP-026955","costCenters":[],"links":[{"id":246353,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218353,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00267-011-9688-2"}],"country":"United States","state":"Georgia","otherGeospatial":"Sawhatchee Creek","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -84.891357421875,\n              30.69933500437198\n            ],\n            [\n              -84.53979492187499,\n              30.704058230919504\n            ],\n            [\n              -84.48486328124999,\n              31.04822792454978\n            ],\n            [\n              -85.0396728515625,\n              31.024694128525137\n            ],\n            [\n              -84.979248046875,\n              30.817346256492073\n            ],\n            [\n              -84.9407958984375,\n              30.685163937659564\n            ],\n            [\n              -84.891357421875,\n              30.69933500437198\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"48","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-05-12","publicationStatus":"PW","scienceBaseUri":"505a0b99e4b0c8380cd527bd","contributors":{"authors":[{"text":"Peterson, James T. 0000-0002-7709-8590 james_peterson@usgs.gov","orcid":"https://orcid.org/0000-0002-7709-8590","contributorId":2111,"corporation":false,"usgs":true,"family":"Peterson","given":"James","email":"james_peterson@usgs.gov","middleInitial":"T.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":456367,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wisniewski, J.M.","contributorId":65688,"corporation":false,"usgs":true,"family":"Wisniewski","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":456369,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shea, C.P.","contributorId":92885,"corporation":false,"usgs":true,"family":"Shea","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":456370,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rhett, Jackson C.","contributorId":54054,"corporation":false,"usgs":true,"family":"Rhett","given":"Jackson","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":456368,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034725,"text":"70034725 - 2011 - Global patterns of phytoplankton dynamics in coastal ecosystems","interactions":[],"lastModifiedDate":"2020-01-11T11:57:23","indexId":"70034725","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Global patterns of phytoplankton dynamics in coastal ecosystems","docAbstract":"Scientific Committee on Ocean Research Working Group 137 Meeting; Hangzhou, China, 17-21 October 2010; Phytoplankton biomass and community structure have undergone dramatic changes in coastal ecosystems over the past several decades in response to climate variability and human disturbance. These changes have short- and long-term impacts on global carbon and nutrient cycling, food web structure and productivity, and coastal ecosystem services. There is a need to identify the underlying processes and measure the rates at which they alter coastal ecosystems on a global scale. Hence, the Scientific Committee on Ocean Research (SCOR) formed Working Group 137 (WG 137), \"Global Patterns of Phytoplankton Dynamics in Coastal Ecosystems: A Comparative Analysis of Time Series Observations\" (http://wg137.net/). This group evolved from a 2007 AGU-sponsored Chapman Conference entitled \"Long Time-Series Observations in Coastal Ecosystems: Comparative Analyses of Phytoplankton Dynamics on Regional to Global Scales.\".","largerWorkTitle":"Eos","language":"English","doi":"10.1029/2011EO100007","issn":"00963941","usgsCitation":"Paerl, H., Yin, K., Cloern, J., and Cloern, J.E., 2011, Global patterns of phytoplankton dynamics in coastal ecosystems, <i>in</i> Eos, v. 92, no. 10, p. 85-85, https://doi.org/10.1029/2011EO100007.","productDescription":"1 p.","startPage":"85","endPage":"85","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":487835,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2011eo100007","text":"Publisher Index Page"},{"id":243450,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-03-08","publicationStatus":"PW","scienceBaseUri":"505a2954e4b0c8380cd5a876","contributors":{"authors":[{"text":"Paerl, H.","contributorId":101478,"corporation":false,"usgs":true,"family":"Paerl","given":"H.","email":"","affiliations":[],"preferred":false,"id":447219,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yin, Kedong","contributorId":94879,"corporation":false,"usgs":true,"family":"Yin","given":"Kedong","email":"","affiliations":[],"preferred":false,"id":447218,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cloern, J.","contributorId":51567,"corporation":false,"usgs":true,"family":"Cloern","given":"J.","affiliations":[],"preferred":false,"id":447217,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cloern, James E. 0000-0002-5880-6862 jecloern@usgs.gov","orcid":"https://orcid.org/0000-0002-5880-6862","contributorId":1488,"corporation":false,"usgs":true,"family":"Cloern","given":"James","email":"jecloern@usgs.gov","middleInitial":"E.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":779346,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70189217,"text":"70189217 - 2011 - Fluorescent microspheres as surrogates in evaluating the efficacy of riverbank filtration for removing Cryptosporidium parvum oocysts and other pathogens","interactions":[],"lastModifiedDate":"2018-08-29T09:52:55","indexId":"70189217","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"displayTitle":"Fluorescent microspheres as surrogates in evaluating the efficacy of riverbank filtration for removing <i>Cryptosporidium parvum</i> oocysts and other pathogens","title":"Fluorescent microspheres as surrogates in evaluating the efficacy of riverbank filtration for removing Cryptosporidium parvum oocysts and other pathogens","docAbstract":"<p><span>A major benefit of riverbank filtration (RBF) is that it provides a relatively effective means for pathogen removal. There is a need to conduct more injection-and-recovery transport studies at operating RBF sites in order to properly assess the combined effects of the site heterogeneities and ambient physicochemical conditions, which are difficult to replicate in the lab. For field transport studies involving pathogens, there is considerable interest in using fluorescent carboxylated microspheres (FCM) as surrogates, because they are chemically inert, negatively charged, easy to detect, available in a wide variety of sizes, and have been found to be nonhazardous in tracer applications. Although there have been a number of in-situ studies comparing the subsurface transport behaviors of FCM to those of bacteria and viruses, much less is known about their suitability for investigations of protozoa. Oocysts of the intestinal protozoan pathogen&nbsp;</span><i class=\"EmphasisTypeItalic \">Cryptosporidium</i><span><span>&nbsp;</span>spp are of particular concern for many RBF operations because of their ubiquity and persistence in rivers and high resistance to chlorine disinfection. Although microspheres often have proven to be less-than-ideal analogs for capturing the abiotic transport behavior of viruses and bacteria, there is encouraging recent evidence regarding use of FCM as surrogates for<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">C. parvum</i><span><span>&nbsp;</span>oocysts. This chapter discusses the potential of fluorescent microspheres as safe and easy-to-detect surrogates for evaluating the efficacy of RBF operations for removing pathogens, particularly<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">Cryptosporidium</i><span>, from source waters at different points along the flow path.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Riverbank filtration for water security in desert countries. NATO Science for Peace and Security Series C: Environmental Security","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Springer","doi":"10.1007/978-94-007-0026-0_6","usgsCitation":"Harvey, R.W., Metge, D.W., Sheets, R., and Jasperse, J., 2011, Fluorescent microspheres as surrogates in evaluating the efficacy of riverbank filtration for removing Cryptosporidium parvum oocysts and other pathogens, chap. <i>of</i> Riverbank filtration for water security in desert countries. NATO Science for Peace and Security Series C: Environmental Security, p. 81-96, https://doi.org/10.1007/978-94-007-0026-0_6.","productDescription":"16 p.","startPage":"81","endPage":"96","ipdsId":"IP-019769","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":343445,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationDate":"2010-11-04","publicationStatus":"PW","scienceBaseUri":"595f4c47e4b0d1f9f057e383","contributors":{"authors":[{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703558,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Metge, David W. dwmetge@usgs.gov","contributorId":663,"corporation":false,"usgs":true,"family":"Metge","given":"David","email":"dwmetge@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703556,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sheets, Rodney A. rasheets@usgs.gov","contributorId":1848,"corporation":false,"usgs":true,"family":"Sheets","given":"Rodney A.","email":"rasheets@usgs.gov","affiliations":[{"id":35860,"text":"Ohio-Kentucky-Indiana Water Science Center","active":true,"usgs":true}],"preferred":true,"id":703557,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jasperse, Jay","contributorId":168661,"corporation":false,"usgs":false,"family":"Jasperse","given":"Jay","affiliations":[{"id":17863,"text":"Sonoma County Water Agency","active":true,"usgs":false}],"preferred":false,"id":703559,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70046785,"text":"70046785 - 2011 - A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS","interactions":[],"lastModifiedDate":"2013-07-08T13:04:35","indexId":"70046785","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":361,"text":"General Information","active":false,"publicationSubtype":{"id":6}},"title":"A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS","docAbstract":"A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program Major River Basin (MRB) study units 2, 3, 4, 5, and 7 (Preston and others, 2009).  MRB2, covers the South Atlantic-Gulf and Tennessee River basins.  MRB3, covers the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins.  MRB4, covers the Missouri River basins.  MRB5, covers the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins.  MRB7, covers the Pacific Northwest River basins. The digital hydrologic network described here represents surface-water pathways (MRB_E2RF1) and associated catchments (MRB_E2RF1WS). It serves as the fundamental framework to spatially reference and summarize explanatory information supporting nutrient SPARROW models (Brakebill and others, 2011; Wieczorek and LaMotte, 2011). The principal geospatial dataset used to support this regional effort was based on an enhanced version of a 1:500,000 scale digital stream-reach network (ERF1_2) (Nolan et al., 2002). Enhancements included associating over 3,500 water-quality monitoring sites to the reach network, improving physical locations of stream reaches at or near monitoring locations, and generating drainage catchments based on 100m elevation data. A unique number (MRB_ID) identifies each reach as a single unit. This unique number is also shared by the catchment area drained by the reach, thus spatially linking the hydrologically connected streams and the respective drainage area characteristics. In addition, other relevant physical, environmental, and monitoring information can be associated to the common network and accessed using the unique identification number.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/70046785","usgsCitation":"Brakebill, J., and Terziotti, S., 2011, A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS (1.0): General Information, Dataset, https://doi.org/10.3133/70046785.","productDescription":"Dataset","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":274631,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":274629,"type":{"id":16,"text":"Metadata"},"url":"https://water.usgs.gov/GIS/metadata/usgswrd/XML/mrb_e2rf1ws.xml"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -128.290499,23.033207 ], [ -128.290499,52.450082 ], [ -64.959844,52.450082 ], [ -64.959844,23.033207 ], [ -128.290499,23.033207 ] ] ] } } ] }","edition":"1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51dbdf64e4b0f81004b77c9f","contributors":{"authors":[{"text":"Brakebill, J. W.","contributorId":48206,"corporation":false,"usgs":true,"family":"Brakebill","given":"J. W.","affiliations":[],"preferred":false,"id":480249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Terziotti, S.E.","contributorId":6287,"corporation":false,"usgs":true,"family":"Terziotti","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":480248,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034662,"text":"70034662 - 2011 - A distribution-based parameterization for improved tomographic imaging of solute plumes","interactions":[],"lastModifiedDate":"2020-01-11T10:07:06","indexId":"70034662","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","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":"A distribution-based parameterization for improved tomographic imaging of solute plumes","docAbstract":"<p><span>Difference geophysical tomography (e.g. radar, resistivity and seismic) is used increasingly for imaging fluid flow and mass transport associated with natural and engineered hydrologic phenomena, including tracer experiments,&nbsp;</span><i>in situ</i><span>&nbsp;remediation and aquifer storage and recovery. Tomographic data are collected over time, inverted and differenced against a background image to produce ‘snapshots’ revealing changes to the system; these snapshots readily provide qualitative information on the location and morphology of plumes of injected tracer, remedial amendment or stored water. In principle, geometric moments (i.e. total mass, centres of mass, spread, etc.) calculated from difference tomograms can provide further quantitative insight into the rates of advection, dispersion and mass transfer; however, recent work has shown that moments calculated from tomograms are commonly biased, as they are strongly affected by the subjective choice of regularization criteria. Conventional approaches to regularization (Tikhonov) and parametrization (image pixels) result in tomograms which are subject to artefacts such as smearing or pixel estimates taking on the sign opposite to that expected for the plume under study. Here, we demonstrate a novel parametrization for imaging plumes associated with hydrologic phenomena. Capitalizing on the mathematical analogy between moment-based descriptors of plumes and the moment-based parameters of probability distributions, we design an inverse problem that (1) is overdetermined and computationally efficient because the image is described by only a few parameters, (2) produces tomograms consistent with expected plume behaviour (e.g. changes of one sign relative to the background image), (3) yields parameter estimates that are readily interpreted for plume morphology and offer direct insight into hydrologic processes and (4) requires comparatively few data to achieve reasonable model estimates. We demonstrate the approach in a series of numerical examples based on straight-ray difference-attenuation radar monitoring of the transport of an ionic tracer, and show that the methodology outlined here is particularly effective when limited data are available.</span></p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.2011.05131.x","issn":"0956540X","usgsCitation":"Pidlisecky, A., Singha, K., and Day-Lewis, F., 2011, A distribution-based parameterization for improved tomographic imaging of solute plumes: Geophysical Journal International, v. 187, no. 1, p. 214-224, https://doi.org/10.1111/j.1365-246X.2011.05131.x.","productDescription":"11 p.","startPage":"214","endPage":"224","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":475438,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2011.05131.x","text":"Publisher Index Page"},{"id":243480,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"187","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-08-19","publicationStatus":"PW","scienceBaseUri":"5059e3c3e4b0c8380cd461ec","contributors":{"authors":[{"text":"Pidlisecky, Adam","contributorId":94877,"corporation":false,"usgs":true,"family":"Pidlisecky","given":"Adam","email":"","affiliations":[],"preferred":false,"id":446926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singha, K.","contributorId":51431,"corporation":false,"usgs":true,"family":"Singha","given":"K.","affiliations":[],"preferred":false,"id":446925,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day-Lewis, F. D. 0000-0003-3526-886X","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":35773,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"F. D.","affiliations":[],"preferred":false,"id":446924,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70189219,"text":"70189219 - 2011 - Effects of the antimicrobial sulfamethoxazole on groundwater bacterial enrichment","interactions":[],"lastModifiedDate":"2020-01-11T12:10:04","indexId":"70189219","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","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":"Effects of the antimicrobial sulfamethoxazole on groundwater bacterial enrichment","docAbstract":"<p><span>The effects of “trace” (environmentally relevant) concentrations of the antimicrobial agent sulfamethoxazole (SMX) on the growth, nitrate reduction activity, and bacterial composition of an enrichment culture prepared with groundwater from a pristine zone of a sandy drinking-water aquifer on Cape Cod, MA, were assessed by laboratory incubations. When the enrichments were grown under heterotrophic denitrifying conditions and exposed to SMX, noticeable differences from the control (no SMX) were observed. Exposure to SMX in concentrations as low as 0.005 μM delayed the initiation of cell growth by up to 1 day and decreased nitrate reduction potential (total amount of nitrate reduced after 19 days) by 47% (</span><i>p</i><span><span>&nbsp;</span>= 0.02). Exposure to 1 μM SMX, a concentration below those prescribed for clinical applications but higher than concentrations typically detected in aqueous environments, resulted in additional inhibitions: reduced growth rates (</span><i>p</i><span><span>&nbsp;</span>= 5 × 10</span><sup>−6</sup><span>), lower nitrate reduction rate potentials (</span><i>p</i><span><span>&nbsp;</span>= 0.01), and decreased overall representation of 16S rRNA gene sequences belonging to the genus<span>&nbsp;</span></span><i>Pseudomonas</i><span>. The reduced abundance of<span>&nbsp;</span></span><i>Pseudomonas</i><span><span>&nbsp;</span>sequences in the libraries was replaced by sequences representing the genus<span>&nbsp;</span></span><i>Variovorax</i><span>. Results of these growth and nitrate reduction experiments collectively suggest that subtherapeutic concentrations of SMX altered the composition of the enriched nitrate-reducing microcosms and inhibited nitrate reduction capabilities.</span></p>","language":"English","publisher":"ACS Publications","doi":"10.1021/es103605e","usgsCitation":"Underwood, J., Harvey, R.W., Metge, D.W., Repert, D.A., Baumgartner, L.K., Smith, R.L., Roane, T.M., and Barber, L.B., 2011, Effects of the antimicrobial sulfamethoxazole on groundwater bacterial enrichment: Environmental Science & Technology, v. 45, no. 7, p. 3096-3101, https://doi.org/10.1021/es103605e.","productDescription":"6 p.","startPage":"3096","endPage":"3101","ipdsId":"IP-023272","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":343389,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"7","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationDate":"2011-03-08","publicationStatus":"PW","scienceBaseUri":"595f4c47e4b0d1f9f057e381","contributors":{"authors":[{"text":"Underwood, Jennifer C. jcunder@usgs.gov","contributorId":4680,"corporation":false,"usgs":true,"family":"Underwood","given":"Jennifer C.","email":"jcunder@usgs.gov","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703568,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703567,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Metge, David W. dwmetge@usgs.gov","contributorId":663,"corporation":false,"usgs":true,"family":"Metge","given":"David","email":"dwmetge@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703565,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Repert, Deborah A. 0000-0001-7284-1456 darepert@usgs.gov","orcid":"https://orcid.org/0000-0001-7284-1456","contributorId":2578,"corporation":false,"usgs":true,"family":"Repert","given":"Deborah","email":"darepert@usgs.gov","middleInitial":"A.","affiliations":[{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":703564,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Baumgartner, Laura K.","contributorId":194245,"corporation":false,"usgs":false,"family":"Baumgartner","given":"Laura","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":703569,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smith, Richard L. 0000-0002-3829-0125 rlsmith@usgs.gov","orcid":"https://orcid.org/0000-0002-3829-0125","contributorId":1592,"corporation":false,"usgs":true,"family":"Smith","given":"Richard","email":"rlsmith@usgs.gov","middleInitial":"L.","affiliations":[{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":703566,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Roane, Timberly M.","contributorId":194246,"corporation":false,"usgs":false,"family":"Roane","given":"Timberly","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":703570,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Barber, Larry B. 0000-0002-0561-0831 lbbarber@usgs.gov","orcid":"https://orcid.org/0000-0002-0561-0831","contributorId":921,"corporation":false,"usgs":true,"family":"Barber","given":"Larry","email":"lbbarber@usgs.gov","middleInitial":"B.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":703571,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70034657,"text":"70034657 - 2011 - Metallothionein-like multinuclear clusters of mercury(II) and sulfur in peat","interactions":[],"lastModifiedDate":"2021-11-09T17:39:19.398815","indexId":"70034657","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","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":"Metallothionein-like multinuclear clusters of mercury(II) and sulfur in peat","docAbstract":"<div class=\"article_abstract\"><div class=\"container container_scaled-down\"><div class=\"row\"><div class=\"col-xs-12\"><div id=\"abstractBox\" class=\"article_abstract-content hlFld-Abstract\"><p class=\"articleBody_abstractText\">Strong mercury(II)–sulfur (Hg-SR) bonds in natural organic matter, which influence mercury bioavailability, are difficult to characterize. We report evidence for two new Hg-SR structures using X-ray absorption spectroscopy in peats from the Florida Everglades with added Hg. The first, observed at a mole ratio of organic reduced S to Hg (S<sub>red</sub>/Hg) between 220 and 1140, is a Hg<sub>4</sub>S<sub><i>x</i></sub><span>&nbsp;</span>type of cluster with each Hg atom bonded to two S atoms at 2.34 Å and one S at 2.53 Å, and all Hg atoms 4.12 Å apart. This model structure matches those of metal–thiolate clusters in metallothioneins, but not those of HgS minerals. The second, with one S atom at 2.34 Å and about six C atoms at 2.97 to 3.28 Å, occurred at S<sub>red</sub>/Hg between 0.80 and 4.3 and suggests Hg binding to a thiolated aromatic unit. The multinuclear Hg cluster indicates a strong binding environment to cysteinyl sulfur that might impede methylation. Along with a linear Hg(SR)<sub>2</sub><span>&nbsp;</span>unit with Hg—S bond lengths of 2.34 Å at S<sub>red</sub>/Hg of about 10 to 20, the new structures support a continuum in Hg-SR binding strength in natural organic matter.</p></div></div></div></div></div>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es201025v","issn":"0013936X","usgsCitation":"Nagy, K.L., Manceau, A., Gasper, J.D., Ryan, J.N., and Aiken, G., 2011, Metallothionein-like multinuclear clusters of mercury(II) and sulfur in peat: Environmental Science & Technology, v. 45, no. 17, p. 7298-7306, https://doi.org/10.1021/es201025v.","productDescription":"9 p.","startPage":"7298","endPage":"7306","numberOfPages":"9","ipdsId":"IP-028777","costCenters":[{"id":381,"text":"Mercury Research Laboratory","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243380,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"17","noUsgsAuthors":false,"publicationDate":"2011-08-02","publicationStatus":"PW","scienceBaseUri":"505a54f1e4b0c8380cd6d0a1","contributors":{"authors":[{"text":"Nagy, K. L.","contributorId":56408,"corporation":false,"usgs":true,"family":"Nagy","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":446891,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Manceau, A.","contributorId":80507,"corporation":false,"usgs":true,"family":"Manceau","given":"A.","affiliations":[],"preferred":false,"id":446893,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gasper, J. D.","contributorId":58837,"corporation":false,"usgs":true,"family":"Gasper","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":446892,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ryan, J. N.","contributorId":102649,"corporation":false,"usgs":true,"family":"Ryan","given":"J.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":446894,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":446890,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70044509,"text":"70044509 - 2011 - Measurement of net nitrogen and phosphorus mineralization in wetland soils using a modification of the resin-core technique","interactions":[],"lastModifiedDate":"2013-03-12T10:58:54","indexId":"70044509","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Measurement of net nitrogen and phosphorus mineralization in wetland soils using a modification of the resin-core technique","docAbstract":"A modification of the resin-core method was developed and tested for measuring in situ soil N and P net mineralization rates in wetland soils where temporal variation in bidirectional vertical water movement and saturation can complicate measurement. The modified design includes three mixed-bed ion-exchange resin bags located above and three resin bags located below soil incubating inside a core tube. The two inner resin bags adjacent to the soil capture NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup>, and soluble reactive phosphorus (SRP) transported out of the soil during incubation; the two outer resin bags remove inorganic nutrients transported into the modified resin core; and the two middle resin bags serve as quality-control checks on the function of the inner and outer resin bags. Modified resin cores were incubated monthly for a year along the hydrogeomorphic gradient through a floodplain wetland. Only small amounts of NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-<sup>, and SRP were found in the two middle resin bags, indicating that the modified resin-core design was effective. Soil moisture and pH inside the modified resin cores typically tracked changes in the surrounding soil abiotic environment. In contrast, use of the closed polyethylene bag method provided substantially different net P and N mineralization rates than modified resin cores and did not track changes in soil moisture or pH. Net ammonification, nitrifi cation, N mineralization, and P mineralization rates measured using modified resin cores varied through space and time associated with hydrologic, geomorphic, and climatic gradients in the floodplain wetland. The modified resin-core technique successfully characterized spatiotemporal variation of net mineralization fluxes in situ and is a viable technique for assessing soil nutrient availability and developing ecosystem budgets.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biogeochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, WI","doi":"10.2136/sssaj2010.0289","usgsCitation":"Noe, G., 2011, Measurement of net nitrogen and phosphorus mineralization in wetland soils using a modification of the resin-core technique: Biogeochemistry, v. 75, no. 2, p. 760-770, https://doi.org/10.2136/sssaj2010.0289.","productDescription":"5 p.","startPage":"760","endPage":"770","numberOfPages":"5","additionalOnlineFiles":"N","ipdsId":"IP-018892","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":269134,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2136/sssaj2010.0289"},{"id":269135,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51404e7fe4b089809dbf4482","contributors":{"authors":[{"text":"Noe, Gregory B.","contributorId":77805,"corporation":false,"usgs":true,"family":"Noe","given":"Gregory B.","affiliations":[],"preferred":false,"id":475774,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70044504,"text":"70044504 - 2011 - On the Hydrologic Adjustment of Climate-Model Projections: The Potential Pitfall of Potential Evapotranspiration","interactions":[],"lastModifiedDate":"2013-04-02T09:09:34","indexId":"70044504","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1421,"text":"Earth Interactions","active":true,"publicationSubtype":{"id":10}},"title":"On the Hydrologic Adjustment of Climate-Model Projections: The Potential Pitfall of Potential Evapotranspiration","docAbstract":"Hydrologic models often are applied to adjust projections of hydroclimatic change that come from climate models. Such adjustment includes climate-bias correction, spatial refinement (\"downscaling\"), and consideration of the roles of hydrologic processes that were neglected in the climate model. Described herein is a quantitative analysis of the effects of hydrologic adjustment on the projections of runoff change associated with projected twenty-first-century climate change. In a case study including three climate models and 10 river basins in the contiguous United States, the authors find that relative (i.e., fractional or percentage) runoff change computed with hydrologic adjustment more often than not was less positive (or, equivalently, more negative) than what was projected by the climate models. The dominant contributor to this decrease in runoff was a ubiquitous change in runoff (median -11%) caused by the hydrologic model’s apparent amplification of the climate-model-implied growth in potential evapotranspiration. Analysis suggests that the hydrologic model, on the basis of the empirical, temperature-based modified Jensen–Haise formula, calculates a change in potential evapotranspiration that is typically 3 times the change implied by the climate models, which explicitly track surface energy budgets. In comparison with the amplification of potential evapotranspiration, central tendencies of other contributions from hydrologic adjustment (spatial refinement, climate-bias adjustment, and process refinement) were relatively small. The authors’ findings highlight the need for caution when projecting changes in potential evapotranspiration for use in hydrologic models or drought indices to evaluate climate-change impacts on water.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth Interactions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Meteorological Society","publisherLocation":"Boston, MA","doi":"10.1175/2010EI363.1","usgsCitation":"Milly, P., and Dunne, K.A., 2011, On the Hydrologic Adjustment of Climate-Model Projections: The Potential Pitfall of Potential Evapotranspiration: Earth Interactions, v. 15, no. 1, p. 1-14, https://doi.org/10.1175/2010EI363.1.","productDescription":"15 p.","startPage":"1","endPage":"14","numberOfPages":"15","additionalOnlineFiles":"N","ipdsId":"IP-019747","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":475164,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/2010ei363.1","text":"Publisher Index Page"},{"id":270445,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":270444,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1175/2010EI363.1"}],"volume":"15","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-01-14","publicationStatus":"PW","scienceBaseUri":"515bfdf6e4b075500ee5ca7b","contributors":{"authors":[{"text":"Milly, Paul C.D. 0000-0003-4389-3139 cmilly@usgs.gov","orcid":"https://orcid.org/0000-0003-4389-3139","contributorId":2119,"corporation":false,"usgs":true,"family":"Milly","given":"Paul C.D.","email":"cmilly@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":475759,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dunne, Krista A. kadunne@usgs.gov","contributorId":3936,"corporation":false,"usgs":true,"family":"Dunne","given":"Krista","email":"kadunne@usgs.gov","middleInitial":"A.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":475760,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70036262,"text":"70036262 - 2011 - Evaluating the effects of future climate change and elevated CO<sub>2</sub> on the water use efficiency in terrestrial ecosystems of China","interactions":[],"lastModifiedDate":"2017-04-06T14:12:35","indexId":"70036262","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1458,"text":"Ecological Modelling","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating the effects of future climate change and elevated CO<sub>2</sub> on the water use efficiency in terrestrial ecosystems of China","docAbstract":"<p><span>Water use efficiency (WUE) is an important variable used in climate change and hydrological studies in relation to how it links ecosystem carbon cycles and hydrological cycles together. However, obtaining reliable WUE results based on site-level flux data remains a great challenge when scaling up to larger regional zones. Biophysical, process-based ecosystem models are powerful tools to study WUE at large spatial and temporal scales. The Integrated BIosphere Simulator (IBIS) was used to evaluate the effects of climate change and elevated CO</span><sub>2</sub><span> concentrations on ecosystem-level WUE (defined as the ratio of gross primary production (GPP) to evapotranspiration (ET)) in relation to terrestrial ecosystems in China for 2009–2099. Climate scenario data (IPCC SRES A2 and SRES B1) generated from the Third Generation Coupled Global Climate Model (CGCM3) was used in the simulations. Seven simulations were implemented according to the assemblage of different elevated CO</span><sub>2</sub><span> concentrations scenarios and different climate change scenarios. Analysis suggests that (1) further elevated CO</span><sub>2</sub><span>concentrations will significantly enhance the WUE over China by the end of the twenty-first century, especially in forest areas; (2) effects of climate change on WUE will vary for different geographical regions in China with negative effects occurring primarily in southern regions and positive effects occurring primarily in high latitude and altitude regions (Tibetan Plateau); (3) WUE will maintain the current levels for 2009–2099 under the constant climate scenario (i.e. using mean climate condition of 1951–2006 and CO</span><sub>2</sub><span>concentrations of the 2008 level); and (4) WUE will decrease with the increase of water resource restriction (expressed as evaporation ratio) among different ecosystems.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecolmodel.2010.09.035","issn":"03043800","usgsCitation":"Zhu, Q., Jiang, H., Peng, C., Liu, J., Wei, X., Fang, X., Liu, S., Zhou, G., and Yu, S., 2011, Evaluating the effects of future climate change and elevated CO<sub>2</sub> on the water use efficiency in terrestrial ecosystems of China: Ecological Modelling, v. 222, no. 14, p. 2414-2429, https://doi.org/10.1016/j.ecolmodel.2010.09.035.","productDescription":"16 p.","startPage":"2414","endPage":"2429","numberOfPages":"16","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":246437,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218430,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecolmodel.2010.09.035"}],"volume":"222","issue":"14","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0bf7e4b0c8380cd52989","contributors":{"authors":[{"text":"Zhu, Q.","contributorId":93711,"corporation":false,"usgs":true,"family":"Zhu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":455163,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jiang, H.","contributorId":83731,"corporation":false,"usgs":true,"family":"Jiang","given":"H.","affiliations":[],"preferred":false,"id":455161,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Peng, C.","contributorId":79314,"corporation":false,"usgs":true,"family":"Peng","given":"C.","email":"","affiliations":[],"preferred":false,"id":455160,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Liu, J.","contributorId":23672,"corporation":false,"usgs":false,"family":"Liu","given":"J.","affiliations":[],"preferred":false,"id":455156,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wei, X.","contributorId":50636,"corporation":false,"usgs":true,"family":"Wei","given":"X.","email":"","affiliations":[],"preferred":false,"id":455159,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fang, X.","contributorId":32288,"corporation":false,"usgs":true,"family":"Fang","given":"X.","email":"","affiliations":[],"preferred":false,"id":455158,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Liu, S.","contributorId":93170,"corporation":false,"usgs":true,"family":"Liu","given":"S.","affiliations":[],"preferred":false,"id":455162,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Zhou, G.","contributorId":12604,"corporation":false,"usgs":true,"family":"Zhou","given":"G.","email":"","affiliations":[],"preferred":false,"id":455155,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Yu, S.","contributorId":25771,"corporation":false,"usgs":true,"family":"Yu","given":"S.","email":"","affiliations":[],"preferred":false,"id":455157,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70032681,"text":"70032681 - 2011 - Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032681","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water","docAbstract":"Precipitation-induced overland and groundwater flow and mixing processes are quantified to analyze the temporal (event and pre-event water) and spatial (groundwater discharge and overland runoff) origins of water entering a stream. Using a distributed-parameter control volume finite-element simulator that can simultaneously solve the fully coupled partial differential equations describing 2-D Manning and 3-D Darcian flow and advective-dispersive transport, mechanical flow (driven by hydraulic potential) and tracer-based hydrograph separation (driven by dispersive mixing as well as mechanical flow) are simulated in response to precipitation events in two cross sections oriented parallel and perpendicular to a stream. The results indicate that as precipitation becomes more intense, the subsurface mechanical flow contributions tend to become less significant relative to the total pre-event stream discharge. Hydrodynamic mixing can play an important role in enhancing pre-event tracer signals in the stream. This implies that temporally tagged chemical signals introduced into surface-subsurface flow systems from precipitation may not be strong enough to detect the changes in the subsurface flow system. It is concluded that diffusive/dispersive mixing, capillary fringe groundwater ridging, and macropore flow can influence the temporal sources of water in the stream, but any sole mechanism may not fully explain the strong pre-event water discharge. Further investigations of the influence of heterogeneity, residence time, geomorphology, and root zone processes are required to confirm the conclusions of this study. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010WR010075","issn":"00431397","usgsCitation":"Park, Y., Sudicky, E., Brookfield, A., and Jones, J., 2011, Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water: Water Resources Research, v. 47, no. 12, https://doi.org/10.1029/2010WR010075.","costCenters":[],"links":[{"id":475150,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010wr010075","text":"Publisher Index Page"},{"id":213644,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010WR010075"},{"id":241291,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"12","noUsgsAuthors":false,"publicationDate":"2011-12-15","publicationStatus":"PW","scienceBaseUri":"505a3685e4b0c8380cd6079a","contributors":{"authors":[{"text":"Park, Y.-J.","contributorId":14645,"corporation":false,"usgs":true,"family":"Park","given":"Y.-J.","email":"","affiliations":[],"preferred":false,"id":437423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sudicky, E.A.","contributorId":67237,"corporation":false,"usgs":true,"family":"Sudicky","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":437425,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brookfield, A.E.","contributorId":38784,"corporation":false,"usgs":true,"family":"Brookfield","given":"A.E.","affiliations":[],"preferred":false,"id":437424,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jones, J.P.","contributorId":101093,"corporation":false,"usgs":true,"family":"Jones","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":437426,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}