[1] Chemical conditions were perturbed in an aquifer with an ambient pH of 5.9 and wastewater-derived adsorbed zinc (Zn) and phosphate (P) contamination by injecting a pulse of amended groundwater. The injected groundwater had low concentrations of dissolved Zn and P, a pH value of 4.5 resulting from equilibration with carbon dioxide gas, and added potassium bromide (KBr). Downgradient of the injection, breakthrough of nonreactive Br and total dissolved carbonate concentrations in excess of ambient values (excess TCO2) were accompanied by a decrease in pH values and over twentyfold increases in dissolved Zn concentrations above preinjection values. Peak concentrations of Br and excess TCO2 were followed by slow increases in pH values accompanied by significant increases in dissolved P above preinjection concentrations. The injected tracers mobilized a significant mass of wastewater-derived Zn. Reactive transport simulations incorporating surface complexation models for adsorption of Zn, P, hydrogen ions, and major cations onto the aquifer sediments, calibrated using laboratory experimental data, captured most of the important trends observed during the experiment. These include increases in Zn concentrations in response to the pH perturbation, perturbations in major cation concentrations, attenuation of the pH perturbation with transport distance, and increases in alkalinity with transport distance. Observed desorption of P in response to chemical perturbations was not predicted, possibly because of a disparity between the range of chemical conditions in the calibration data set and those encountered during the field experiment. Zinc and P desorbed rapidly in response to changing chemical conditions despite decades of contact with the sediments. Surface complexation models with relatively few parameters in the form of logK values and site concentrations show considerable promise for describing the influence of variable chemistry on the transport of adsorbing contaminants.
Populations of chemotactic bacteria are able to sense and respond to chemical gradients in their surroundings and direct their migration toward increasing concentrations of chemicals that they perceive to be beneficial to their survival. It has been suggested that this phenomenon may facilitate bioremediation processes by bringing bacteria into closer proximity to the chemical contaminants that they degrade. To determine the significance of chemotaxis in these processes it is necessary to quantify the magnitude of the response and compare it to other groundwater processes that affect the fate and transport of bacteria. We present a systematic approach toward quantifying the chemotactic response of bacteria in laboratory scale experiments by starting with simple, well-defined systems and gradually increasing their complexity. Swimming properties of individual cells were assessed from trajectories recorded by a tracking microscope. These properties were used to calculate motility and chemotaxis coefficients of bacterial populations in bulk aqueous media which were compared to experimental results of diffusion studies. Then effective values of motility and chemotaxis coefficients in single pores, pore networks and packed columns were analyzed. These were used to estimate the magnitude of the chemotactic response in porous media and to compare with dispersion coefficients reported in the field. This represents a compilation of many studies over a number of years. While there are certainly limitations with this approach for ultimately quantifying motility and chemotaxis in granular aquifer media, it does provide insight into what order of magnitude responses are possible and which characteristics of the bacteria and media are expected to be important.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Water Resources","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.advwatres.2006.05.019","issn":"03091708","usgsCitation":"Ford, R., and Harvey, R.W., 2007, Role of chemotaxis in the transport of bacteria through saturated porous media: Advances in Water Resources, v. 30, no. 6-7, p. 1608-1617, https://doi.org/10.1016/j.advwatres.2006.05.019.","productDescription":"10 p.","startPage":"1608","endPage":"1617","numberOfPages":"10","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":213030,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.advwatres.2006.05.019"},{"id":240610,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"6-7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aae49e4b0c8380cd87072","contributors":{"authors":[{"text":"Ford, R.M.","contributorId":95689,"corporation":false,"usgs":true,"family":"Ford","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":424118,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":424117,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030196,"text":"70030196 - 2007 - Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development","interactions":[],"lastModifiedDate":"2018-04-03T13:21:21","indexId":"70030196","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development","docAbstract":"Bedrock groundwater in alpine watersheds is poorly understood, mainly because of a scarcity of wells in alpine settings. Groundwater noble gas, age, and temperature data were collected from springs and wells with depths of 3–342 m in Handcart Gulch, an alpine watershed in Colorado. Temperature profiles indicate active groundwater circulation to a maximum depth (aquifer thickness) of about 200 m, or about 150 m below the water table. Dissolved noble gas data show unusually high excess air concentrations (>0.02 cm3 STP/g, ΔNe > 170%) in the bedrock, consistent with unusually large seasonal water table fluctuations (up to 50 m) observed in the upper part of the watershed. Apparent 3H/3He ages are positively correlated with sample depth and excess air concentrations. Integrated samples were collected from artesian bedrock wells near the trunk stream and are assumed to approximate flow‐weighted samples reflecting bedrock aquifer mean residence times. Exponential mean ages for these integrated samples are remarkably consistent along the stream, four of five being from 8 to 11 years. The tracer data in combination with other hydrologic and geologic data support a relatively simple conceptual model of groundwater flow in the watershed in which (1) permeability is primarily a function of depth; (2) water table fluctuations increase with distance from the stream; and (3) recharge, aquifer thickness, and porosity are relatively uniform throughout the watershed in spite of the geological complexity of the Proterozoic crystalline rocks that underlie it.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR005349","usgsCitation":"Manning, A.H., and Caine, J.S., 2007, Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development: Water Resources Research, v. 43, no. 4, Article W04404; 16 p., https://doi.org/10.1029/2006WR005349.","productDescription":"Article W04404; 16 p.","costCenters":[],"links":[{"id":477130,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr005349","text":"Publisher Index Page"},{"id":239611,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-04-04","publicationStatus":"PW","scienceBaseUri":"505a2dabe4b0c8380cd5bf9a","contributors":{"authors":[{"text":"Manning, Andrew H. 0000-0002-6404-1237 amanning@usgs.gov","orcid":"https://orcid.org/0000-0002-6404-1237","contributorId":1305,"corporation":false,"usgs":true,"family":"Manning","given":"Andrew","email":"amanning@usgs.gov","middleInitial":"H.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":426091,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Caine, Jonathan S. 0000-0002-7269-6989 jscaine@usgs.gov","orcid":"https://orcid.org/0000-0002-7269-6989","contributorId":1272,"corporation":false,"usgs":true,"family":"Caine","given":"Jonathan","email":"jscaine@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":426092,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030183,"text":"70030183 - 2007 - A classification of U.S. estuaries based on physical and hydrologic attributes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030183","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"A classification of U.S. estuaries based on physical and hydrologic attributes","docAbstract":"A classification of U.S. estuaries is presented based on estuarine characteristics that have been identified as important for quantifying stressor-response relationships in coastal systems. Estuaries within a class have similar physical and hydrologic characteristics and would be expected to demonstrate similar biological responses to stressor loads from the adjacent watersheds. Nine classes of estuaries were identified by applying cluster analysis to a database for 138 U.S. estuarine drainage areas. The database included physical measures of estuarine areas, depth and volume, as well as hydrologic parameters (i.e., tide height, tidal prism volume, freshwater inflow rates, salinity, and temperature). The ability of an estuary to dilute or flush pollutants can be estimated using physical and hydrologic properties such as volume, bathymetry, freshwater inflow and tidal exchange rates which influence residence time and affect pollutant loading rates. Thus, physical and hydrologic characteristics can be used to estimate the susceptibility of estuaries to pollutant effects. This classification of estuaries can be used by natural resource managers to describe and inventory coastal systems, understand stressor impacts, predict which systems are most sensitive to stressors, and manage and protect coastal resources. ?? Springer Science+Business Media B.V. 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10661-006-9372-9","issn":"01676369","usgsCitation":"Engle, V., Kurtz, J., Smith, L., Chancy, C., and Bourgeois, P., 2007, A classification of U.S. estuaries based on physical and hydrologic attributes: Environmental Monitoring and Assessment, v. 129, no. 1-3, p. 397-412, https://doi.org/10.1007/s10661-006-9372-9.","startPage":"397","endPage":"412","numberOfPages":"16","costCenters":[],"links":[{"id":211995,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9372-9"},{"id":239392,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"129","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-02-03","publicationStatus":"PW","scienceBaseUri":"5059e342e4b0c8380cd45ef6","contributors":{"authors":[{"text":"Engle, V.D.","contributorId":15562,"corporation":false,"usgs":true,"family":"Engle","given":"V.D.","email":"","affiliations":[],"preferred":false,"id":426051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kurtz, J.C.","contributorId":63616,"corporation":false,"usgs":true,"family":"Kurtz","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":426052,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, L.M.","contributorId":82650,"corporation":false,"usgs":true,"family":"Smith","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":426054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chancy, C.","contributorId":72202,"corporation":false,"usgs":true,"family":"Chancy","given":"C.","email":"","affiliations":[],"preferred":false,"id":426053,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bourgeois, P.","contributorId":94498,"corporation":false,"usgs":true,"family":"Bourgeois","given":"P.","affiliations":[],"preferred":false,"id":426055,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030175,"text":"70030175 - 2007 - The collapse of pelagic fishes in the upper San Francisco estuary","interactions":[],"lastModifiedDate":"2021-03-30T14:40:57.645549","indexId":"70030175","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1657,"text":"Fisheries","onlineIssn":"1548-8446","printIssn":"0363-2415","active":true,"publicationSubtype":{"id":10}},"title":"The collapse of pelagic fishes in the upper San Francisco estuary","docAbstract":"Although the pelagic fish community of the upper San Francisco Estuary historically has shown substantial variability, a recent collapse has captured the attention of resource managers, scientists, legislators, and the general public. The ecological and management consequences of the decline are most serious for delta smelt (Hypomesus transpacificus), a threatened species whose narrow range overlaps with large water diversions that supply water to over 25 million people. The decline occurred despite recent moderate hydrology, which typically results in at least modest recruitment, and investments of hundreds of millions of dollars in habitat restoration and environmental water allocations to support native fishes. In response to the pelagic fish collapse, an ambitious multi-hyphen;agency research team has been working since 2005 to evaluate the causes of the decline, which likely include a combination of factors: stock-recruitment effects, a decline in habitat quality, increased mortality rates, and reduced food availability due to invasive species.
","language":"English","publisher":"Taylor & Francis","doi":"10.1577/1548-8446(2007)32[270:TCOPFI]2.0.CO;2","usgsCitation":"Sommer, T., Armor, C., Baxter, R., Breuer, R., Brown, L., Chotkowski, M., Culberson, S., Feyrer, F., Gingras, M., Herbold, B., Kimmerer, W., Mueller-Solger, A., Nobriga, M., and Souza, K., 2007, The collapse of pelagic fishes in the upper San Francisco estuary: Fisheries, v. 32, no. 6, p. 270-277, https://doi.org/10.1577/1548-8446(2007)32[270:TCOPFI]2.0.CO;2.","productDescription":"8 p.","startPage":"270","endPage":"277","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":239257,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Upper San Francisco Estuary","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.39044189453124,\n 37.78916666399649\n ],\n [\n -122.28607177734376,\n 37.832564787218985\n ],\n [\n -122.31903076171875,\n 37.91278405007035\n ],\n [\n -122.38082885742189,\n 37.95827503526034\n ],\n [\n -122.23114013671875,\n 38.06106741381201\n ],\n [\n -122.29843139648436,\n 38.23494411562881\n ],\n [\n -122.43988037109374,\n 38.13455657705411\n ],\n [\n -122.49481201171875,\n 38.11727165830543\n ],\n [\n -122.50717163085938,\n 38.005902055387054\n ],\n [\n -122.508544921875,\n 37.92903406232562\n ],\n [\n -122.50442504882814,\n 37.87702138607635\n ],\n [\n -122.47695922851562,\n 37.82280243352756\n ],\n [\n -122.464599609375,\n 37.801103690609615\n ],\n [\n -122.39044189453124,\n 37.78916666399649\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"32","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa3ce4b08c986b32277f","contributors":{"authors":[{"text":"Sommer, T.","contributorId":106703,"corporation":false,"usgs":true,"family":"Sommer","given":"T.","email":"","affiliations":[],"preferred":false,"id":426015,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Armor, C.","contributorId":76942,"corporation":false,"usgs":true,"family":"Armor","given":"C.","email":"","affiliations":[],"preferred":false,"id":426011,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baxter, R.","contributorId":48758,"corporation":false,"usgs":true,"family":"Baxter","given":"R.","email":"","affiliations":[],"preferred":false,"id":426006,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Breuer, R.","contributorId":16219,"corporation":false,"usgs":true,"family":"Breuer","given":"R.","email":"","affiliations":[],"preferred":false,"id":426003,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brown, L. 0000-0001-6702-4531","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":56995,"corporation":false,"usgs":true,"family":"Brown","given":"L.","affiliations":[],"preferred":false,"id":426007,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chotkowski, M.","contributorId":78543,"corporation":false,"usgs":true,"family":"Chotkowski","given":"M.","affiliations":[],"preferred":false,"id":426012,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Culberson, S.","contributorId":96480,"corporation":false,"usgs":true,"family":"Culberson","given":"S.","affiliations":[],"preferred":false,"id":426014,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Feyrer, F. 0000-0003-1253-2349","orcid":"https://orcid.org/0000-0003-1253-2349","contributorId":6254,"corporation":false,"usgs":true,"family":"Feyrer","given":"F.","affiliations":[],"preferred":false,"id":426002,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Gingras, M.","contributorId":58093,"corporation":false,"usgs":true,"family":"Gingras","given":"M.","affiliations":[],"preferred":false,"id":426008,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Herbold, B.","contributorId":66062,"corporation":false,"usgs":true,"family":"Herbold","given":"B.","affiliations":[],"preferred":false,"id":426009,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kimmerer, W.","contributorId":38325,"corporation":false,"usgs":false,"family":"Kimmerer","given":"W.","email":"","affiliations":[],"preferred":false,"id":426005,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mueller-Solger, A.","contributorId":16220,"corporation":false,"usgs":true,"family":"Mueller-Solger","given":"A.","affiliations":[],"preferred":false,"id":426004,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Nobriga, M.","contributorId":67284,"corporation":false,"usgs":true,"family":"Nobriga","given":"M.","affiliations":[],"preferred":false,"id":426010,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Souza, K.","contributorId":84157,"corporation":false,"usgs":true,"family":"Souza","given":"K.","email":"","affiliations":[],"preferred":false,"id":426013,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70030122,"text":"70030122 - 2007 - Quasi-horizontal circulation cells in 3D seawater intrusion","interactions":[],"lastModifiedDate":"2018-10-16T10:29:57","indexId":"70030122","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Quasi-horizontal circulation cells in 3D seawater intrusion","docAbstract":"The seawater intrusion process is characterized by the difference in freshwater and seawater density that causes freshwater to float on seawater. Many confined aquifers have a large horizontal extension with respect to thickness. In these cases, while buoyancy acts in the vertical direction, flow is confined between the upper and bottom boundaries and the effect of gravity is controlled by variations of aquifer elevation. Therefore, the effective gravity is controlled by the slope and the shape of the aquifer boundaries. Variability in the topography of the aquifer boundaries is one case where 3D analysis is necessary. In this work, density-dependent flow processes caused by 3D aquifer geometry are studied numerically and specifically, considering a lateral slope of the aquifer boundaries. Sub-horizontal circulation cells are formed in the saltwater entering the aquifer. The penetration of the saltwater can be quantified by a dimensionless buoyancy number that measures the lateral slope of the aquifer relative to freshwater flux. The penetration of the seawater intrusion wedge is controlled more by this slope than by the aquifer thickness and dispersivity. Thus, the slope must be taken into account in order to accurately evaluate seawater intrusion.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.02.017","issn":"00221694","usgsCitation":"Abarca, E., Carrera, J., Sanchez-Vila, X., and Voss, C.I., 2007, Quasi-horizontal circulation cells in 3D seawater intrusion: Journal of Hydrology, v. 339, no. 3-4, p. 118-129, https://doi.org/10.1016/j.jhydrol.2007.02.017.","productDescription":"12 p.","startPage":"118","endPage":"129","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477026,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.scipedia.com/public/Abarca_et_al_2007b","text":"External Repository"},{"id":213020,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.02.017"},{"id":240600,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"339","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9279e4b0c8380cd80894","contributors":{"authors":[{"text":"Abarca, E.","contributorId":28077,"corporation":false,"usgs":true,"family":"Abarca","given":"E.","affiliations":[],"preferred":false,"id":425806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carrera, J.","contributorId":68536,"corporation":false,"usgs":true,"family":"Carrera","given":"J.","email":"","affiliations":[],"preferred":false,"id":425807,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanchez-Vila, X.","contributorId":106716,"corporation":false,"usgs":true,"family":"Sanchez-Vila","given":"X.","email":"","affiliations":[],"preferred":false,"id":425809,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":425808,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030101,"text":"70030101 - 2007 - Estimation of evapotranspiration by reed canarygrass using field observations and model simulations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70030101","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of evapotranspiration by reed canarygrass using field observations and model simulations","docAbstract":"Reed canarygrass (Phalaris arundinacea) commonly invades meadow wetlands, effectively dominating water use and outcompeting native plants. Objectives of this study were to (i) estimate daily, seasonal and annual water use by reed canarygrass using shallow water table fluctuations; and (ii) calibrate the ALMANAC (Agricultural Land Management Alternative with Numerical Assessment Criteria) model to accurately simulate water uptake by this grass. Using a groundwater well, the water table under an area in Iowa dominated by reed canarygrass was monitored hourly. Differences between water level measurements taken each hour were averaged to determine the hourly water table change in each month. Using these estimates of water use, the ALMANAC model was then calibrated to simulate plant transpiration values close to these water table use rates. Average monthly calculated daily plant water use rates were 3.3 mm d-1 in July and 2.3-2.8 mm d-1 in May, June, August, and September. Simulated bimonthly values for measured water use and plant transpiration simulated by the ALMANAC model differed by 14% or less. From May to October the mean ratio of measured to simulated values was 94%. Thus, the similarity between simulated plant transpiration and water use from the water table showed promise that this process-based model can realistically simulate water use under such grassland systems. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.02.003","issn":"00221694","usgsCitation":"Schilling, K.E., and Kiniry, J.R., 2007, Estimation of evapotranspiration by reed canarygrass using field observations and model simulations: Journal of Hydrology, v. 337, no. 3-4, p. 356-363, https://doi.org/10.1016/j.jhydrol.2007.02.003.","startPage":"356","endPage":"363","numberOfPages":"8","costCenters":[],"links":[{"id":212728,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.02.003"},{"id":240260,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"337","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b87e4b0c8380cd52774","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":425717,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kiniry, James R.","contributorId":66918,"corporation":false,"usgs":true,"family":"Kiniry","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425718,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033223,"text":"70033223 - 2007 - The influence of major dams on hydrology through the drainage network of the Sacramento River basin, California","interactions":[],"lastModifiedDate":"2012-03-12T17:21:35","indexId":"70033223","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"The influence of major dams on hydrology through the drainage network of the Sacramento River basin, California","docAbstract":"This paper reports basinwide patterns of hydrograph alteration via statistical and graphical analysis from a network of long-term streamflow gauges located various distances downstream of major dams and confluences in the Sacramento River basin in California, USA. Streamflow data from 10 gauging stations downstream of major dams were divided into hydrologic series corresponding to the periods before and after dam construction. Pre- and post-dam flows were compared with respect to hydrograph characteristics representing frequency, magnitude and shape: annual flood peak, annual flow trough, annual flood volume, time to flood peak, flood drawdown time and interarrival time. The use of such a suite of characteristics within a statistical and graphical framework allows for generalising distinct strategies of flood control operation that can be identified without any a priori knowledge of operations rules. Dam operation is highly dependent on the ratio of reservoir capacity to annual flood volume (impounded runoff index). Dams with high values of this index generally completely cut off flood peaks thus reducing time to peak, drawdown time and annual flood volume. Those with low values conduct early and late flow releases to extend the hydrograph, increasing time to peak, drawdown time and annual flood volume. The analyses reveal minimal flood control benefits from foothill dams in the lower Sacramento River (i.e. dissipation of the down-valley flood control signal). The lower part of the basin is instead reliant on a weir and bypass system to control lowland flooding. Data from a control gauge (i.e. with no upstream dams) suggest a background signature of global climate change expressed as shortened flood hydrograph falling limbs and lengthened flood interarrival times at low exceedence probabilities. This research has implications for flood control, water resource management, aquatic and riparian ecosystems and for rehabilitation strategies involving flow alteration and/or manipulation of sediment supplies. Copyright ?? 2006 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.968","issn":"15351459","usgsCitation":"Singer, M., 2007, The influence of major dams on hydrology through the drainage network of the Sacramento River basin, California: River Research and Applications, v. 23, no. 1, p. 55-72, https://doi.org/10.1002/rra.968.","startPage":"55","endPage":"72","numberOfPages":"18","costCenters":[],"links":[{"id":213187,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.968"},{"id":240790,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-10-26","publicationStatus":"PW","scienceBaseUri":"505bad2de4b08c986b323a2a","contributors":{"authors":[{"text":"Singer, M.B.","contributorId":67274,"corporation":false,"usgs":true,"family":"Singer","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":439906,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70033546,"text":"70033546 - 2007 - The effects of flooding and sedimentation on seed germination of two bottomland hardwood tree species","interactions":[],"lastModifiedDate":"2017-05-17T09:33:08","indexId":"70033546","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"The effects of flooding and sedimentation on seed germination of two bottomland hardwood tree species","docAbstract":"Flooding and sedimentation are two of the dominant disturbances that influence tree species composition and succession in floodplain forests. The importance of these disturbances may be most notable during the germination and establishment phases of plant succession. Channelization of most alluvial systems in the southeastern United States has caused dramatic and systematic alterations to both hydrologic and sedimentation processes of floodplain systems. We determined the influence of these altered abiotic processes on the germination and growth of two common floodplain tree species: swamp chestnut oak (Quercus michauxii Nutt.) and overcup oak (Q. lyrata Walt.). Flood durations of 0 days, 15 days, and 30 days prior to germination was a factor in germination, but the effect varied by species. For instance, ovcrcup oak, which has a higher tolerance to flooding than swamp chestnut oak, had higher germination rates in the flooded treatments (15-day x?? = 78% and 30-day x?? = 85%) compared to the non-flooded treatment (x?? = 54%). In contrast, germination rates of swamp chestnut oak were negatively affected by the 30-day flood treatment. Sediment deposition rates of 2 cm of top soil, 2 cm of sand, and 8 cm of sand also affected germination, but were secondary to flood duration. The main effect of the sediment treatment in this experiment was a reduction in above-ground height of seedlings. Our study provides evidence for the importance of both flooding and sedimentation in determining tree species composition in floodplain systems, and that tolerance levels to such stressors vary by species. ?? 2007, The Society of Wetland Scientists.","language":"English","publisher":"Springer","doi":"10.1672/0277-5212(2007)27[588:TEOFAS]2.0.CO;2","issn":"02775","usgsCitation":"Pierce, A.R., and King, S., 2007, The effects of flooding and sedimentation on seed germination of two bottomland hardwood tree species: Wetlands, v. 27, no. 3, p. 588-594, https://doi.org/10.1672/0277-5212(2007)27[588:TEOFAS]2.0.CO;2.","productDescription":"7 p.","startPage":"588","endPage":"594","costCenters":[],"links":[{"id":242117,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bab7be4b08c986b322e8f","contributors":{"authors":[{"text":"Pierce, Aaron R.","contributorId":94421,"corporation":false,"usgs":false,"family":"Pierce","given":"Aaron","email":"","middleInitial":"R.","affiliations":[{"id":33463,"text":"Nicholls State University, Thibodaux, LA","active":true,"usgs":false}],"preferred":false,"id":441387,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, S.L.","contributorId":105663,"corporation":false,"usgs":true,"family":"King","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":441388,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033219,"text":"70033219 - 2007 - Impacts of waste from concentrated animal feeding operations on water quality","interactions":[],"lastModifiedDate":"2018-10-26T07:57:46","indexId":"70033219","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1542,"text":"Environmental Health Perspectives","active":true,"publicationSubtype":{"id":10}},"title":"Impacts of waste from concentrated animal feeding operations on water quality","docAbstract":"Waste from agricultural livestock operations has been a long-standing concern with respect to contamination of water resources, particularly in terms of nutrient pollution. However, the recent growth of concentrated animal feeding operations (CAFOs) presents a greater risk to water quality because of both the increased volume of waste and to contaminants that may be present (e.g., antibiotics and other veterinary drugs) that may have both environmental and public health importance. Based on available data, generally accepted livestock waste management practices do not adequately or effectively protect water resources from contamination with excessive nutrients, microbial pathogens, and pharmaceuticals present in the waste. Impacts on surface water sources and wildlife have been documented in many agricultural areas in the United States. Potential impacts on human and environmental health from long-term inadvertent exposure to water contaminated with pharmaceuticals and other compounds are a growing public concern. This workgroup, which is part of the Conference on Environmental Health Impacts of Concentrated Animal Feeding Operations: Anticipating Hazards-Searching for Solutions, identified needs for rigorous ecosystem monitoring in the vicinity of CAFOs and for improved characterization of major toxicants affecting the environment and human health. Last, there is a need to promote and enforce best practices to minimize inputs of nutrients and toxicants from CAFOs into freshwater and marine ecosystems.
","language":"English","publisher":"National Institute of Environmental Health Sciences","doi":"10.1289/ehp.8839","issn":"00916765","usgsCitation":"Burkholder, J., Libra, B., Weyer, P., Heathcote, S., Kolpin, D., Thorne, P., and Wichman, M., 2007, Impacts of waste from concentrated animal feeding operations on water quality: Environmental Health Perspectives, v. 115, no. 2, p. 308-312, https://doi.org/10.1289/ehp.8839.","productDescription":"5 p.","startPage":"308","endPage":"312","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":487774,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1289/ehp.8839","text":"Publisher Index Page"},{"id":240724,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"115","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3901e4b0c8380cd61781","contributors":{"authors":[{"text":"Burkholder, J.","contributorId":7091,"corporation":false,"usgs":true,"family":"Burkholder","given":"J.","email":"","affiliations":[],"preferred":false,"id":439880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Libra, B.","contributorId":73016,"corporation":false,"usgs":true,"family":"Libra","given":"B.","email":"","affiliations":[],"preferred":false,"id":439885,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weyer, P.","contributorId":76947,"corporation":false,"usgs":true,"family":"Weyer","given":"P.","email":"","affiliations":[],"preferred":false,"id":439886,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Heathcote, S.","contributorId":20163,"corporation":false,"usgs":true,"family":"Heathcote","given":"S.","email":"","affiliations":[],"preferred":false,"id":439882,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kolpin, D.","contributorId":18128,"corporation":false,"usgs":true,"family":"Kolpin","given":"D.","email":"","affiliations":[],"preferred":false,"id":439881,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Thorne, P.S.","contributorId":31986,"corporation":false,"usgs":true,"family":"Thorne","given":"P.S.","email":"","affiliations":[],"preferred":false,"id":439883,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wichman, M.","contributorId":49983,"corporation":false,"usgs":true,"family":"Wichman","given":"M.","affiliations":[],"preferred":false,"id":439884,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70033214,"text":"70033214 - 2007 - Sediment discharge into a subsiding Louisiana deltaic estuary through a Mississippi River diversion","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70033214","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Sediment discharge into a subsiding Louisiana deltaic estuary through a Mississippi River diversion","docAbstract":"Wetlands of the Mississippi River deltaic plain in southeast Louisiana have been hydrologically isolated from the Mississippi River by containment levees for nearly a century. The ensuing lack of fluvial sediment inputs, combined with natural submergence processes, has contributed to high coastal land loss rates. Controlled river diversions have since been constructed to reconnect the marshes of the deltaic plain with the river. This study examines the impact of a pulsed diversion management plan on sediment discharge into the Breton Sound estuary, in which duplicate 185 m3 s-1-diversions lasting two weeks each were conducted in the spring of 2002 and 2003. Sediment delivery during each pulse was highly variable (11,300-43,800 metric tons), and was greatest during rising limbs of Mississippi River flood events. Overland flow, a necessary transport mechanism for river sediments to reach the subsiding backmarsh regions, was induced only when diversion discharge exceeded 100 m3 s-1. These results indicate that timing and magnitude of diversion events are both important factors governing marsh sediment deposition in the receiving basins of river diversions. Though the diversion serves as the primary source of river sediments to the estuary, the inputs observed here were several orders of magnitude less than historical sediment discharge through crevasses and uncontrolled diversions in the region, and are insufficient to offset present rates of relative sea level rise. ?? 2006 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Estuarine, Coastal and Shelf Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.ecss.2006.06.035","issn":"02727714","usgsCitation":"Snedden, G., Cable, J., Swarzenski, C., and Swenson, E., 2007, Sediment discharge into a subsiding Louisiana deltaic estuary through a Mississippi River diversion: Estuarine, Coastal and Shelf Science, v. 71, no. 1-2, p. 181-193, https://doi.org/10.1016/j.ecss.2006.06.035.","startPage":"181","endPage":"193","numberOfPages":"13","costCenters":[],"links":[{"id":213562,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecss.2006.06.035"},{"id":241196,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8983e4b08c986b316dfd","contributors":{"authors":[{"text":"Snedden, G.A. 0000-0001-7821-3709","orcid":"https://orcid.org/0000-0001-7821-3709","contributorId":37535,"corporation":false,"usgs":true,"family":"Snedden","given":"G.A.","affiliations":[],"preferred":false,"id":439863,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cable, J.E.","contributorId":25963,"corporation":false,"usgs":true,"family":"Cable","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":439862,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swarzenski, C.","contributorId":96096,"corporation":false,"usgs":true,"family":"Swarzenski","given":"C.","email":"","affiliations":[],"preferred":false,"id":439864,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swenson, E.","contributorId":99784,"corporation":false,"usgs":true,"family":"Swenson","given":"E.","affiliations":[],"preferred":false,"id":439865,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70033123,"text":"70033123 - 2007 - Physical and temporal isolation of mountain headwater streams in the western Mojave Desert, Southern California","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70033123","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Physical and temporal isolation of mountain headwater streams in the western Mojave Desert, Southern California","docAbstract":"Streams draining mountain headwater areas of the western Mojave Desert are commonly physically isolated from downstream hydrologic systems such as springs, playa lakes, wetlands, or larger streams and rivers by stream reaches that are dry much of the time. The physical isolation of surface flow in these streams may be broken for brief periods after rainfall or snowmelt when runoff is sufficient to allow flow along the entire stream reach. Despite the physical isolation of surface flow in these streams, they are an integral part of the hydrologic cycle. Water infiltrated from headwater streams moves through the unsaturated zone to recharge the underlying ground-water system and eventually discharges to support springs, streamflow, isolated wetlands, or native vegetation. Water movement through thick unsaturated zones may require several hundred years and subsequent movement through the underlying ground-water systems may require many thousands of years - contributing to the temporal isolation of mountain headwater streams. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00004.x","issn":"1093474X","usgsCitation":"Izbicki, J., 2007, Physical and temporal isolation of mountain headwater streams in the western Mojave Desert, Southern California: Journal of the American Water Resources Association, v. 43, no. 1, p. 26-40, https://doi.org/10.1111/j.1752-1688.2007.00004.x.","startPage":"26","endPage":"40","numberOfPages":"15","costCenters":[],"links":[{"id":240784,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213184,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00004.x"}],"volume":"43","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-01-26","publicationStatus":"PW","scienceBaseUri":"505a7a91e4b0c8380cd78f94","contributors":{"authors":[{"text":"Izbicki, J. A. 0000-0003-0816-4408","orcid":"https://orcid.org/0000-0003-0816-4408","contributorId":28244,"corporation":false,"usgs":true,"family":"Izbicki","given":"J. A.","affiliations":[],"preferred":false,"id":439465,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70031517,"text":"70031517 - 2007 - Dust emission from wet and dry playas in the Mojave Desert, USA","interactions":[],"lastModifiedDate":"2023-07-21T11:11:38.741333","indexId":"70031517","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Dust emission from wet and dry playas in the Mojave Desert, USA","docAbstract":"The interactions between playa hydrology and playa-surface sediments are important factors that control the type and amount of dust emitted from playas as a result of wind erosion. The production of evaporite minerals during evaporative loss of near-surface ground water results in both the creation and maintenance of several centimeters or more of loose sediment on and near the surfaces of wet playas. Observations that characterize the texture, mineralogic composition and hardness of playa surfaces at Franklin Lake, Soda Lake and West Cronese Lake playas in the Mojave Desert (California), along with imaging of dust emission using automated digital photography, indicate that these kinds of surface sediment are highly susceptible to dust emission. The surfaces of wet playas are dynamic - surface texture and sediment availability to wind erosion change rapidly, primarily in response to fluctuations in water-table depth, rainfall and rates of evaporation. In contrast, dry playas are characterized by ground water at depth. Consequently, dry playas commonly have hard surfaces that produce little or no dust if undisturbed except for transient silt and clay deposited on surfaces by wind and water. Although not the dominant type of global dust, salt-rich dusts from wet playas may be important with respect to radiative properties of dust plumes, atmospheric chemistry, windborne nutrients and human health.","language":"English","publisher":"Wiley","doi":"10.1002/esp.1515","issn":"01979337","usgsCitation":"Reynolds, R.L., Yount, J., Reheis, M.C., Goldstein, H.L., Chavez, P.F., Fulton, R.E., Whitney, J.W., Fuller, C.C., and Forester, R.M., 2007, Dust emission from wet and dry playas in the Mojave Desert, USA: Earth Surface Processes and Landforms, v. 32, no. 12, p. 1811-1827, https://doi.org/10.1002/esp.1515.","productDescription":"17 p.","startPage":"1811","endPage":"1827","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239862,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119,\n 34\n ],\n [\n -113,\n 34\n ],\n [\n -113,\n 37\n ],\n [\n -119,\n 37\n ],\n [\n -119,\n 34\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"32","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-04-19","publicationStatus":"PW","scienceBaseUri":"505a041de4b0c8380cd507c1","contributors":{"authors":[{"text":"Reynolds, Richard L. 0000-0002-4572-2942 rreynolds@usgs.gov","orcid":"https://orcid.org/0000-0002-4572-2942","contributorId":441,"corporation":false,"usgs":true,"family":"Reynolds","given":"Richard","email":"rreynolds@usgs.gov","middleInitial":"L.","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":true,"id":431895,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yount, James C.","contributorId":39341,"corporation":false,"usgs":true,"family":"Yount","given":"James C.","affiliations":[],"preferred":false,"id":431893,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reheis, Marith C. 0000-0002-8359-323X mreheis@usgs.gov","orcid":"https://orcid.org/0000-0002-8359-323X","contributorId":138571,"corporation":false,"usgs":true,"family":"Reheis","given":"Marith","email":"mreheis@usgs.gov","middleInitial":"C.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":431890,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goldstein, Harland L. 0000-0002-6092-8818 hgoldstein@usgs.gov","orcid":"https://orcid.org/0000-0002-6092-8818","contributorId":147881,"corporation":false,"usgs":true,"family":"Goldstein","given":"Harland","email":"hgoldstein@usgs.gov","middleInitial":"L.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":431896,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chavez, Pat F. Jr.","contributorId":101738,"corporation":false,"usgs":true,"family":"Chavez","given":"Pat","suffix":"Jr.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":431891,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fulton, Robert E.","contributorId":139055,"corporation":false,"usgs":false,"family":"Fulton","given":"Robert","email":"","middleInitial":"E.","affiliations":[{"id":12637,"text":"California State University, Desert Studies Center, Baker, CA","active":true,"usgs":false}],"preferred":false,"id":431889,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":431892,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"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":431897,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Forester, Richard M.","contributorId":71961,"corporation":false,"usgs":true,"family":"Forester","given":"Richard","email":"","middleInitial":"M.","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":false,"id":431894,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70029774,"text":"70029774 - 2007 - The science and practice of environmental flows and the role of hydrogeologists","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029774","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"The science and practice of environmental flows and the role of hydrogeologists","docAbstract":"Conflicts between ecosystems and human needs for fresh water are increasing. The purpose of this paper is to raise awareness in the hydrogeologic community of environmental flows (EFs) and to address the major challenges involved in their protection. Ground water is a key component of EFs, and therefore hydrogeologists are called upon to get involved in the ongoing debates about maintaining healthy riverine ecosystems. Promising opportunities for achieving EFs in both underallocated and overallocated basins as well as new methods for protecting fresh water ecosystems developed in different countries are outlined. EF protection measures include private water trusts, \"upside-down instream flow water rights,\" the \"public trust\" doctrine, and water markets, among other measures. A number of knowledge gaps are identified, to which hydrogeologists could contribute, such as our rudimentary knowledge about ground water-dependent ecosystems, aspects of stream-aquifer interactions, and the impacts of land-use changes. The values that society places on the different uses of water ultimately determine where the water is allocated. EF requirements can be legitimately recognized and addressed by basing the environmental needs of hydrologic systems on robust science, focusing on increasing the productivity of water use, engaging society in understanding the benefits and costs of decisions that affect ecosystems, and taking advantage of various opportunities for achieving EF goals. ?? 2007 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00322.x","issn":"0017467X","usgsCitation":"Sophocleous, M., 2007, The science and practice of environmental flows and the role of hydrogeologists: Ground Water, v. 45, no. 4, p. 393-401, https://doi.org/10.1111/j.1745-6584.2007.00322.x.","startPage":"393","endPage":"401","numberOfPages":"9","costCenters":[],"links":[{"id":212834,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00322.x"},{"id":240383,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-05-04","publicationStatus":"PW","scienceBaseUri":"505bafb6e4b08c986b3249c4","contributors":{"authors":[{"text":"Sophocleous, M.","contributorId":13373,"corporation":false,"usgs":true,"family":"Sophocleous","given":"M.","email":"","affiliations":[],"preferred":false,"id":424236,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70029818,"text":"70029818 - 2007 - Hydrologic significance of carbon monoxide concentrations in ground water","interactions":[],"lastModifiedDate":"2018-10-16T10:55:13","indexId":"70029818","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Hydrologic significance of carbon monoxide concentrations in ground water","docAbstract":"Dissolved carbon monoxide (CO) is present in ground water produced from a variety of aquifer systems at concentrations ranging from 0.2 to 20 nanomoles per liter (0.0056 to 0.56 μg/L). In two shallow aquifers, one an unconsolidated coastal plain aquifer in Kings Bay, Georgia, and the other a fractured‐bedrock aquifer in West Trenton, New Jersey, long‐term monitoring showed that CO concentrations varied over time by as much as a factor of 10. Field and laboratory evidence suggests that the delivery of dissolved oxygen to the soil zone and underlying aquifers by periodic recharge events stimulates oxic metabolism and produces transiently high CO concentrations. In between recharge events, the aquifers become anoxic and more substrate limited, CO is consumed as a carbon source, and CO concentrations decrease. According to this model, CO concentrations provide a transient record of oxic metabolism affecting ground water systems after dissolved oxygen has been fully consumed. Because the delivery of oxygen affects the fate and transport of natural and anthropogenic contaminants in ground water, CO concentration changes may be useful for identifying predominantly anoxic ground water systems subject to periodic oxic or microaerophilic conditions.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00284.x","issn":"0017467X","usgsCitation":"Chapelle, F.H., and Bradley, P.M., 2007, Hydrologic significance of carbon monoxide concentrations in ground water: Ground Water, v. 45, no. 3, p. 272-280, https://doi.org/10.1111/j.1745-6584.2007.00284.x.","productDescription":"9 p.","startPage":"272","endPage":"280","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240551,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212976,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00284.x"}],"volume":"45","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-03-12","publicationStatus":"PW","scienceBaseUri":"505a368ae4b0c8380cd607c7","contributors":{"authors":[{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424458,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424457,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030117,"text":"70030117 - 2007 - Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions","interactions":[],"lastModifiedDate":"2018-10-17T09:53:20","indexId":"70030117","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions","docAbstract":"A detailed local-scale monitoring network was used to assess CFC distribution in an unconfined sand aquifer in southwestern Ontario where the zone of 1–5-year-old groundwater was known with certainty because of prior use of a bromide tracer. Groundwater ⩽5 years old was confined to an aerobic zone at ⩽5 m depth and had CFC concentrations consistent with modern atmospheric mixing ratios at recharge temperatures of 7–11 °C, as was observed in the 3-m thick vadose zone at the site. At depths below 6 m, the groundwater became progressively more reducing, however, with a denitrifying horizon at 6–7 m depth, and a Mn and Fe reducing zone below 7 m depth. In the anaerobic zone, 3H/3He ratios indicated that groundwater-age continued to increase uniformly with depth, to a maximum value of 27 years at 13 m depth. CFC concentrations, however, decreased abruptly within the denitrifying zone, leading to substantial age overestimation compared to the 3H/3He ages. Noble gas data indicated that the apparent CFC mass loss was not likely the result of gas stripping from possible bubble formation; thus, CFC degradation was indicated in the anoxic zone. The field data are consistent with first-order degradation rates of 0.3 yr−1 for CFC-12, 0.7 yr−1 for CFC-11, and 1.6 yr−1 for CFC-113. CFC attenuation at this site coincides with a zone where reduced S (pyrite) is actively oxidized by NO3 and dissolved oxygen (DO). Similar behavior has been observed at other sites [Tesoriero, A.J., Liebscher, H., Cox, S.E., 2000. Mechanism and rate of denitrification in an agricultural watershed: electron and mass balance along groundwater flow path. Water Resour. Res. 36 (6), 1545–1559; Hinsby, K., Hojberg, A.L., Engesgaard, P., Jensen, K.H., Larsen, F., Plummer, L.N., Busenberg, E., Accepted for publication. Transport and degradation of chlorofluorocarbons (CFCs) in a pyritic aquifer, Rabis Creek, Denmark. Water Resour. Res.], further demonstrating that the use of CFCs for age-dating anaerobic groundwater should be approached with caution, particularly if the sediment contains pyrite.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.08.009","issn":"00221694","usgsCitation":"Sebol, L., Robertson, W., Busenberg, E., Plummer, N., Ryan, M., and Schiff, S., 2007, Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions: Journal of Hydrology, v. 347, no. 1-2, p. 1-12, https://doi.org/10.1016/j.jhydrol.2007.08.009.","productDescription":"12 p.","startPage":"1","endPage":"12","numberOfPages":"12","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240537,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212965,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.08.009"}],"volume":"347","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d5ce4b0c8380cd52f92","contributors":{"authors":[{"text":"Sebol, L.A.","contributorId":74204,"corporation":false,"usgs":true,"family":"Sebol","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":425776,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robertson, W.D.","contributorId":40807,"corporation":false,"usgs":true,"family":"Robertson","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":425774,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":425775,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":425777,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ryan, M.C.","contributorId":105535,"corporation":false,"usgs":true,"family":"Ryan","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":425778,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schiff, S.L.","contributorId":13001,"corporation":false,"usgs":true,"family":"Schiff","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":425773,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031242,"text":"70031242 - 2007 - Diel cycling of zinc in a stream impacted by acid rock drainage: Initial results from a new in situ Zn analyzer","interactions":[],"lastModifiedDate":"2018-10-17T13:28:33","indexId":"70031242","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Diel cycling of zinc in a stream impacted by acid rock drainage: Initial results from a new in situ Zn analyzer","docAbstract":"Recent work has demonstrated that many trace metals undergo dramatic diel (24-h) cycles in near neutral pH streams with metal concentrations reproducibly changing up to 500% during the diel period (Nimick et al., 2003). To examine diel zinc cycles in streams affected by acid rock drainage, we have developed a novel instrument, the Zn-DigiScan, to continuously monitor in situ zinc concentrations in near real-time. Initial results from a 3-day deployment at Fisher Creek, Montana have demonstrated the ability of the Zn-DigiScan to record diel Zn cycling at levels below 100 μg/l. Longer deployments of this instrument could be used to examine the effects of episodic events such as rainstorms and snowmelt pulses on zinc loading in streams affected by acid rock drainage.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1007/s10661-006-9569-y","issn":"01676369","usgsCitation":"Chapin, T.P., Nimick, D.A., Gammons, C.H., and Wanty, R.B., 2007, Diel cycling of zinc in a stream impacted by acid rock drainage: Initial results from a new in situ Zn analyzer: Environmental Monitoring and Assessment, v. 133, no. 1-3, p. 161-167, https://doi.org/10.1007/s10661-006-9569-y.","productDescription":"7 p.","startPage":"161","endPage":"167","numberOfPages":"7","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238586,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211317,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9569-y"}],"country":"United States","state":"Montana","otherGeospatial":"Fisher Creek","volume":"133","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2006-12-16","publicationStatus":"PW","scienceBaseUri":"505a00c0e4b0c8380cd4f8cf","contributors":{"authors":[{"text":"Chapin, Thomas P.","contributorId":96184,"corporation":false,"usgs":true,"family":"Chapin","given":"Thomas","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":430689,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nimick, David A. dnimick@usgs.gov","contributorId":421,"corporation":false,"usgs":true,"family":"Nimick","given":"David","email":"dnimick@usgs.gov","middleInitial":"A.","affiliations":[{"id":573,"text":"Special Applications Science Center","active":true,"usgs":true},{"id":5050,"text":"WY-MT Water Science Center","active":true,"usgs":true}],"preferred":true,"id":430691,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gammons, Chris","contributorId":140801,"corporation":false,"usgs":false,"family":"Gammons","given":"Chris","affiliations":[{"id":13574,"text":"Montana Tech of the University of Montana, Butte, MT","active":true,"usgs":false}],"preferred":false,"id":430688,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wanty, Richard B. 0000-0002-2063-6423 rwanty@usgs.gov","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":443,"corporation":false,"usgs":true,"family":"Wanty","given":"Richard","email":"rwanty@usgs.gov","middleInitial":"B.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":430690,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029705,"text":"70029705 - 2007 - Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA","interactions":[],"lastModifiedDate":"2016-08-17T11:54:12","indexId":"70029705","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA","docAbstract":"Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 °C during the 20th century, and that warming induced by increasing concentrations of greenhouse gases is likely to continue in the 21st century, accompanied by changes in the hydrologic cycle. Climate change has important implications in the Catskill region of southeastern New York State, because the region is a source of water supply for New York City. We used the non-parametric Mann–Kendall test to evaluate annual, monthly, and multi-month trends in air temperature, precipitation amount, stream runoff, and potential evapotranspiration (PET) in the region during 1952–2005 based on data from 9 temperature sites, 12 precipitation sites, and 8 stream gages. A general pattern of warming temperatures and increased precipitation, runoff, and PET is evident in the region. Regional annual mean air temperature increased significantly by 0.6 °C per 50 years during the period; the greatest increases and largest number of significant upward trends were in daily minimum air temperature. Daily maximum air temperature showed the greatest increase during February through April, whereas minimum air temperature showed the greatest increase during May through September. Regional mean precipitation increased significantly by 136 mm per 50 years, nearly double that of the regional mean increase in runoff, which was not significant. Regional mean PET increased significantly by 19 mm per 50 years, about one-seventh that of the increase in precipitation amount, and broadly consistent with increased runoff during 1952–2005, despite the lack of significance in the mean regional runoff trend. Peak snowmelt as approximated by the winter–spring center of volume of stream runoff generally shifted from early April at the beginning of the record to late March at the end of the record, consistent with a decreasing trend in April runoff and an increasing trend in maximum March air temperature. This change indicates an increased supply of water to reservoirs earlier in the year. Additionally, the supply of water to reservoirs at the beginning of winter is greater as indicated by the timing of the greatest increases in precipitation and runoff—both occurred during summer and fall. The future balance between changes in air temperature and changes in the timing and amount of precipitation in the region will have important implications for the available water supply in the region.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2006.12.019","issn":"00221694","usgsCitation":"Burns, D.A., Klaus, J., and McHale, M.R., 2007, Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA: Journal of Hydrology, v. 336, no. 1-2, p. 155-170, https://doi.org/10.1016/j.jhydrol.2006.12.019.","productDescription":"16 p.","startPage":"155","endPage":"170","numberOfPages":"16","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":240479,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Catskill region","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.3607177734375,\n 42.004407212963585\n ],\n [\n -75.3277587890625,\n 41.96357478222518\n ],\n [\n -75.26184082031249,\n 41.93088998442502\n ],\n [\n -75.2508544921875,\n 41.87774145109676\n ],\n [\n -75.1959228515625,\n 41.85319643776675\n ],\n [\n -75.157470703125,\n 41.84501267270692\n ],\n [\n -75.1080322265625,\n 41.832735062152615\n ],\n [\n -75.1025390625,\n 41.78769700539063\n ],\n [\n -75.047607421875,\n 41.73852846935917\n ],\n [\n -75.05859375,\n 41.66060124302088\n ],\n [\n -75.05859375,\n 41.60722821271717\n ],\n [\n -75.03662109375,\n 41.549700145132725\n ],\n [\n -74.9871826171875,\n 41.492120839687786\n ],\n [\n -74.937744140625,\n 41.47154438707647\n ],\n [\n -74.8883056640625,\n 41.45507852101139\n ],\n [\n -74.8388671875,\n 41.430371882652814\n ],\n [\n -74.77294921875,\n 41.42625319507272\n ],\n [\n -74.7344970703125,\n 41.413895564677304\n ],\n [\n -74.7015380859375,\n 41.372686481864655\n ],\n [\n -74.68505859374999,\n 41.35207214451295\n ],\n [\n -74.50927734375,\n 41.281934557995356\n ],\n [\n -74.3719482421875,\n 41.33970040774419\n ],\n [\n -74.102783203125,\n 41.430371882652814\n ],\n [\n -73.85009765625,\n 41.51680395810118\n ],\n [\n -73.7841796875,\n 41.590796851056005\n ],\n [\n -73.7017822265625,\n 41.70982942509964\n ],\n [\n -73.6468505859375,\n 41.83682786072714\n ],\n [\n -73.6138916015625,\n 42.04521345501039\n ],\n [\n -73.6688232421875,\n 42.313877566161864\n ],\n [\n -73.707275390625,\n 42.45588764197166\n ],\n [\n -73.7841796875,\n 42.742978093466434\n ],\n [\n -73.8885498046875,\n 42.867912483915305\n ],\n [\n -74.1522216796875,\n 42.93631775765237\n ],\n [\n -74.498291015625,\n 42.93631775765237\n ],\n [\n -74.86083984375,\n 42.93631775765237\n ],\n [\n -75.1409912109375,\n 42.81555136172695\n ],\n [\n -75.25634765625,\n 42.68243539838623\n ],\n [\n -75.35522460937499,\n 42.459940352216556\n ],\n [\n -75.3607177734375,\n 42.004407212963585\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"336","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a95f0e4b0c8380cd81d0b","contributors":{"authors":[{"text":"Burns, Douglas A. 0000-0001-6516-2869","orcid":"https://orcid.org/0000-0001-6516-2869","contributorId":29450,"corporation":false,"usgs":true,"family":"Burns","given":"Douglas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":423932,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaus, Julian","contributorId":173770,"corporation":false,"usgs":false,"family":"Klaus","given":"Julian","email":"","affiliations":[{"id":7107,"text":"Univ. of Freiburg, Germany","active":true,"usgs":false}],"preferred":false,"id":423934,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McHale, Michael R. 0000-0003-3780-1816 mmchale@usgs.gov","orcid":"https://orcid.org/0000-0003-3780-1816","contributorId":1735,"corporation":false,"usgs":true,"family":"McHale","given":"Michael","email":"mmchale@usgs.gov","middleInitial":"R.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":423933,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029706,"text":"70029706 - 2007 - Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70029706","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA","docAbstract":"Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the basin and uplands along the eastern margin, are defined by mean annual precipitation that exceeds approximately 60 cm. A third recharge area coincides with the extensive irrigation canal system in the south central part of the basin. The stable isotope signature for Cascade Range groundwater falls near the global meteoric water line (GMWL). The stable isotope signature for the groundwater of the eastern basin uplands also falls near the GMWL, but is depleted in heavy isotopes relative to the Cascade Range groundwater. The stable isotope signature for water from the irrigation canal system deviates from the GMWL in a manner indicative of fractionation by evaporation. Groundwater provenance was previously unknown for two aquifers of interest: that supplying deep (225-792 m), large-capacity irrigation wells along the Oregon-California border, and that of the geothermal system near Klamath Falls. Groundwater produced by the deep irrigation wells along the Oregon-California border appears to be a mixture of eastern-basin groundwater and water with an evaporative isotopic signature. The component with an evaporative isotopic signature appears in some places to consist of infiltrated irrigation water. Chloride data suggest that much of the component with the evaporative isotopic signature may be coming from an adjacent subbasin. After accounting for the 18O shift common in geothermal waters, isotope data suggest that the geothermal groundwater in the upper Klamath Basin may emanate from the eastern basin uplands. Findings demonstrate that stable isotope and chloride data can illuminate certain details of a regional groundwater flow system in a complex geologic setting where other hydrologic data are ambiguous. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2006.12.008","issn":"00221694","usgsCitation":"Palmer, P., Gannett, M.W., and Hinkle, S., 2007, Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA: Journal of Hydrology, v. 336, no. 1-2, p. 17-29, https://doi.org/10.1016/j.jhydrol.2006.12.008.","startPage":"17","endPage":"29","numberOfPages":"13","costCenters":[],"links":[{"id":212943,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2006.12.008"},{"id":240512,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"336","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3f9be4b0c8380cd64661","contributors":{"authors":[{"text":"Palmer, P.C.","contributorId":86972,"corporation":false,"usgs":true,"family":"Palmer","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":423937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gannett, M. W.","contributorId":75569,"corporation":false,"usgs":true,"family":"Gannett","given":"M.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":423936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hinkle, S.R.","contributorId":74778,"corporation":false,"usgs":true,"family":"Hinkle","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":423935,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029730,"text":"70029730 - 2007 - Phosphorus budgets in Everglades wetland ecosystems: The effects of hydrology and nutrient enrichment","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029730","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3751,"text":"Wetlands Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Phosphorus budgets in Everglades wetland ecosystems: The effects of hydrology and nutrient enrichment","docAbstract":"The Florida Everglades is a naturally oligotrophic hydroscape that has experienced large changes in ecosystem structure and function as the result of increased anthropogenic phosphorus (P) loading and hydrologic changes. We present whole-ecosystem models of P cycling for Everglades wetlands with differing hydrology and P enrichment with the goal of synthesizing existing information into ecosystem P budgets. Budgets were developed for deeper water oligotrophic wet prairie/slough ('Slough'), shallower water oligotrophic Cladium jamaicense ('Cladium'), partially enriched C. jamaicense/Typha spp. mixture ('Cladium/Typha'), and enriched Typha spp. ('Typha') marshes. The majority of ecosystem P was stored in the soil in all four ecosystem types, with the flocculent detrital organic matter (floc) layer at the bottom of the water column storing the next largest proportion of ecosystem P pools. However, most P cycling involved ecosystem components in the water column (periphyton, floc, and consumers) in deeper water, oligotrophic Slough marsh. Fluxes of P associated with macrophytes were more important in the shallower water, oligotrophic Cladium marsh. The two oligotrophic ecosystem types had similar total ecosystem P stocks and cycling rates, and low rates of P cycling associated with soils. Phosphorus flux rates cannot be estimated for ecosystem components residing in the water column in Cladium/Typha or Typha marshes due to insufficient data. Enrichment caused a large increase in the importance of macrophytes to P cycling in Everglades wetlands. The flux of P from soil to the water column, via roots to live aboveground tissues to macrophyte detritus, increased from 0.03 and 0.2 g P m-2 yr-1 in oligotrophic Slough and Cladium marsh, respectively, to 1.1 g P m-2 yr -1 in partially enriched Cladium/Typha, and 1.6 g P m-2 yr-1 in enriched Typha marsh. This macrophyte translocation P flux represents a large source of internal eutrophication to surface waters in P-enriched areas of the Everglades. ?? 2007 Springer Science+Business Media, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands Ecology and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11273-006-9023-5","issn":"09234861","usgsCitation":"Noe, G., and Childers, D., 2007, Phosphorus budgets in Everglades wetland ecosystems: The effects of hydrology and nutrient enrichment: Wetlands Ecology and Management, v. 15, no. 3, p. 189-205, https://doi.org/10.1007/s11273-006-9023-5.","startPage":"189","endPage":"205","numberOfPages":"17","costCenters":[],"links":[{"id":212800,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11273-006-9023-5"},{"id":240342,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-01-16","publicationStatus":"PW","scienceBaseUri":"505a78b4e4b0c8380cd7876a","contributors":{"authors":[{"text":"Noe, G.B.","contributorId":66464,"corporation":false,"usgs":true,"family":"Noe","given":"G.B.","email":"","affiliations":[],"preferred":false,"id":424039,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Childers, D.L.","contributorId":44334,"corporation":false,"usgs":true,"family":"Childers","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":424038,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029731,"text":"70029731 - 2007 - Bedrock aquifers and population growth in the Denver Basin, Colorado, USA","interactions":[],"lastModifiedDate":"2018-04-10T11:05:50","indexId":"70029731","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1582,"text":"Episodes","active":true,"publicationSubtype":{"id":10}},"title":"Bedrock aquifers and population growth in the Denver Basin, Colorado, USA","docAbstract":"The Denver Basin bedrock aquifer system consists of Tertiary and Cretaceous age sedimentary rocks known as the Dawson, Denver, Arapahoe and Laramie-Fox Hills aquifers. The number of bedrock wells has increased from 12,000 in 1985 to over 33,700 in 2001 and the withdrawal of groundwater has caused water level declines in excess of 75 meters. Water level declines now range from 3 to 12 meters per year in the critical Arapahoe Aquifer. The groundwater supplies were once thought to be sufficient for 100 years but there is concern that they may be depleted in 10 to 15 years in areas on the west side of the basin. Groundwater is being mined from the aquifer system because the withdrawal through wells exceeds the rate of recharge. Increased groundwater withdrawal will cause further water level declines, increased costs to pump groundwater, and reduced yield from existing wells. In the Denver Basin, hydrologists have some capability to monitor declines in water levels for the Arapaho Aquifer, but generally have a limited ability to monitor water use. More complete and accurate water use data are needed to predict groundwater longevity for the Arapahoe Aquifer. The life of the Arapahoe Aquifer can be extended with artificial recharge using imported surface water, water reuse, restrictions on lawn watering, well permit restrictions and other conservation measures. Availability of groundwater may limit growth in the Denver Basin over the next 20 years unless residents are willing to pay for additional new sources of supply.","language":"English","publisher":"International Union of Geological Sciences","issn":"07053797","usgsCitation":"Moore, J., Raynolds, R., and Dechesne, M., 2007, Bedrock aquifers and population growth in the Denver Basin, Colorado, USA: Episodes, v. 30, no. 2, p. 115-118.","productDescription":"4 p.","startPage":"115","endPage":"118","numberOfPages":"4","costCenters":[],"links":[{"id":240343,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265825,"type":{"id":15,"text":"Index Page"},"url":"https://www.episodes.org/journalArchive.do"}],"volume":"30","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f048e4b0c8380cd4a6bf","contributors":{"authors":[{"text":"Moore, J.E.","contributorId":34927,"corporation":false,"usgs":true,"family":"Moore","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":424040,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raynolds, R.G.","contributorId":39006,"corporation":false,"usgs":true,"family":"Raynolds","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":424041,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dechesne, M.","contributorId":72207,"corporation":false,"usgs":true,"family":"Dechesne","given":"M.","affiliations":[],"preferred":false,"id":424042,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029938,"text":"70029938 - 2007 - Biotransformation of caffeine, cotinine, and nicotine in stream sediments: Implications for use as wastewater indicators","interactions":[],"lastModifiedDate":"2018-10-17T10:55:33","indexId":"70029938","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Biotransformation of caffeine, cotinine, and nicotine in stream sediments: Implications for use as wastewater indicators","docAbstract":"Microbially catalyzed cleavage of the imadazole ring of caffeine was observed in stream sediments collected upstream and downstream of municipal wastewater treatment plants (WWTP) in three geographically separate stream systems. Microbial demethylation of the N-methyl component of cotinine and its metabolic precursor, nicotine, also was observed in these sediments. These findings indicate that stream sediment microorganisms are able to substantially alter the chemical structure and thus the analytical signatures of these candidate waste indicator compounds. The potential for in situ biotransformation must be considered if these compounds are employed as markers to identify the sources and track the fate of wastewater compounds in surface-water systems.
","language":"English","publisher":"Elsevier","doi":"10.1897/06-483R.1","issn":"07307268","usgsCitation":"Bradley, P.M., Barber, L.B., Kolpin, D.W., McMahon, P.B., and Chapelle, F.H., 2007, Biotransformation of caffeine, cotinine, and nicotine in stream sediments: Implications for use as wastewater indicators: Environmental Toxicology and Chemistry, v. 26, no. 6, p. 1116-1121, https://doi.org/10.1897/06-483R.1.","productDescription":"6 p.","startPage":"1116","endPage":"1121","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240320,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212782,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-483R.1"}],"country":"United States","state":"Colorado, Iowa","otherGeospatial":"Boulder Creek, Fourmile Creek, South Platte River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -93.63235473632812,\n 41.731354910056446\n ],\n [\n -93.61450195312499,\n 41.7180304600481\n ],\n [\n -93.57330322265625,\n 41.679066225164114\n ],\n [\n -93.58291625976561,\n 41.66265316924903\n ],\n [\n -93.52935791015625,\n 41.66060124302088\n ],\n [\n -93.5430908203125,\n 41.61749568924246\n ],\n [\n -93.51974487304688,\n 41.61030862727467\n ],\n [\n -93.51974487304688,\n 41.590796851056005\n ],\n [\n -93.51150512695312,\n 41.56819689811343\n ],\n [\n -93.51425170898438,\n 41.55381099217959\n ],\n [\n -93.526611328125,\n 41.580525125613846\n ],\n [\n -93.53622436523436,\n 41.6010669423553\n ],\n [\n -93.55682373046875,\n 41.61852234700827\n ],\n [\n -93.54995727539062,\n 41.64828831259535\n ],\n [\n -93.59527587890625,\n 41.66060124302088\n ],\n [\n -93.59527587890625,\n 41.68111756290652\n ],\n [\n -93.63784790039061,\n 41.724180549563606\n ],\n [\n -93.63235473632812,\n 41.731354910056446\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.2105712890625,\n 39.41497702499074\n ],\n [\n -105.303955078125,\n 39.236507954871094\n ],\n [\n -105.2325439453125,\n 39.232253141714885\n ],\n [\n -105.18310546875,\n 39.39375459224348\n ],\n [\n -105.029296875,\n 39.53793974517628\n ],\n [\n -104.9688720703125,\n 39.67759833072648\n ],\n [\n -104.974365234375,\n 39.774769485295465\n ],\n [\n -104.8150634765625,\n 39.9602803542957\n ],\n [\n -104.776611328125,\n 40.12009038025332\n ],\n [\n -104.82604980468749,\n 40.25856876391262\n ],\n [\n -104.600830078125,\n 40.39258071969131\n ],\n [\n -104.425048828125,\n 40.33817045213394\n ],\n [\n -104.3316650390625,\n 40.287906612507406\n ],\n [\n -104.10095214843749,\n 40.28371627054261\n ],\n [\n -104.0185546875,\n 40.34235741658332\n ],\n [\n -103.82080078125,\n 40.25856876391262\n ],\n [\n -103.6395263671875,\n 40.271143686084194\n ],\n [\n -103.4033203125,\n 40.396764305572056\n ],\n [\n -103.11767578124999,\n 40.61812224225511\n ],\n [\n -103.1011962890625,\n 40.697299008636755\n ],\n [\n -102.85400390625,\n 40.81796653313175\n ],\n [\n -102.5299072265625,\n 40.896905775860006\n ],\n [\n -102.3980712890625,\n 40.93841495689795\n ],\n [\n -102.249755859375,\n 40.9218144123785\n ],\n [\n -102.1563720703125,\n 41.00477542222949\n ],\n [\n -102.2332763671875,\n 41.0130657870063\n ],\n [\n -102.32666015625,\n 40.979898069620155\n ],\n [\n -102.4749755859375,\n 40.96330795307351\n ],\n [\n -102.755126953125,\n 40.89275342420696\n ],\n [\n -103.084716796875,\n 40.76806170936614\n ],\n [\n -103.17260742187499,\n 40.713955826286046\n ],\n [\n -103.29345703125,\n 40.57224011776902\n ],\n [\n -103.45275878906249,\n 40.45948689837198\n ],\n [\n -103.612060546875,\n 40.34235741658332\n ],\n [\n -103.77685546875,\n 40.300476079749494\n ],\n [\n -104.007568359375,\n 40.38839687388361\n ],\n [\n -104.150390625,\n 40.33817045213394\n ],\n [\n -104.32617187499999,\n 40.33817045213394\n ],\n [\n -104.4525146484375,\n 40.40931350359072\n ],\n [\n -104.61181640625,\n 40.44694705960048\n ],\n [\n -104.74365234375,\n 40.38839687388361\n ],\n [\n -104.90295410156249,\n 40.3130432088809\n ],\n [\n -104.886474609375,\n 40.22082997283287\n ],\n [\n -104.86450195312499,\n 40.07807142745009\n ],\n [\n -104.8699951171875,\n 39.95185892663005\n ],\n [\n -104.9853515625,\n 39.85915479295669\n ],\n [\n -105.062255859375,\n 39.75365697136308\n ],\n [\n -105.029296875,\n 39.64799732373418\n ],\n [\n -105.1007080078125,\n 39.52946653645165\n ],\n [\n -105.2105712890625,\n 39.41497702499074\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.01247406005858,\n 40.156310883032674\n ],\n [\n -105.00732421875,\n 40.15893480687665\n ],\n [\n -105.01762390136719,\n 40.139777831309495\n ],\n [\n -105.01522064208984,\n 40.12954106843822\n ],\n [\n -105.0354766845703,\n 40.10669965638878\n ],\n [\n -105.05058288574219,\n 40.094094213737755\n ],\n [\n -105.05573272705078,\n 40.0833252155441\n ],\n [\n -105.0677490234375,\n 40.072554513652655\n ],\n [\n -105.07942199707031,\n 40.06913905733146\n ],\n [\n -105.09796142578124,\n 40.05757778051925\n ],\n [\n -105.10379791259766,\n 40.0565266580714\n ],\n [\n -105.11650085449219,\n 40.04943115747162\n ],\n [\n -105.1336669921875,\n 40.044963241082975\n ],\n [\n -105.15495300292969,\n 40.0489055354487\n ],\n [\n -105.16834259033202,\n 40.0489055354487\n ],\n [\n -105.18482208251953,\n 40.0483799093726\n ],\n [\n -105.18482208251953,\n 40.052847601823984\n ],\n [\n -105.16319274902344,\n 40.053898781018304\n ],\n [\n -105.1498031616211,\n 40.05442436453555\n ],\n [\n -105.13469696044922,\n 40.04969396696316\n ],\n [\n -105.11993408203125,\n 40.053898781018304\n ],\n [\n -105.10379791259766,\n 40.06151934529636\n ],\n [\n -105.09212493896484,\n 40.0651979333746\n ],\n [\n -105.08216857910155,\n 40.07491896000657\n ],\n [\n -105.06156921386719,\n 40.08358789430713\n ],\n [\n -105.05744934082031,\n 40.09514475648848\n ],\n [\n -105.04783630371094,\n 40.11221380317288\n ],\n [\n -105.03616333007811,\n 40.12271570320351\n ],\n [\n -105.02037048339842,\n 40.13452840194915\n ],\n [\n -105.02208709716797,\n 40.141877489503514\n ],\n [\n -105.01728057861328,\n 40.152374807152206\n ],\n [\n -105.01247406005858,\n 40.156310883032674\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"26","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-01","publicationStatus":"PW","scienceBaseUri":"5059f1a4e4b0c8380cd4ad66","contributors":{"authors":[{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424981,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":424982,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kolpin, Dana W. 0000-0002-3529-6505 dwkolpin@usgs.gov","orcid":"https://orcid.org/0000-0002-3529-6505","contributorId":1239,"corporation":false,"usgs":true,"family":"Kolpin","given":"Dana","email":"dwkolpin@usgs.gov","middleInitial":"W.","affiliations":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424983,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McMahon, Peter B. 0000-0001-7452-2379 pmcmahon@usgs.gov","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":724,"corporation":false,"usgs":true,"family":"McMahon","given":"Peter","email":"pmcmahon@usgs.gov","middleInitial":"B.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424980,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424984,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029831,"text":"70029831 - 2007 - Role of hydrous iron oxide formation in attenuation and diel cycling of dissolved trace metals in a stream affected by acid rock drainage","interactions":[],"lastModifiedDate":"2018-10-17T13:19:06","indexId":"70029831","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3728,"text":"Water, Air, & Soil Pollution","onlineIssn":"1573-2932","printIssn":"0049-6979","active":true,"publicationSubtype":{"id":10}},"title":"Role of hydrous iron oxide formation in attenuation and diel cycling of dissolved trace metals in a stream affected by acid rock drainage","docAbstract":"Mining-impacted streams have been shown to undergo diel (24-h) fluctuations in concentrations of major and trace elements. Fisher Creek in south-central Montana, USA receives acid rock drainage (ARD) from natural and mining-related sources. A previous diel field study found substantial changes in dissolved metal concentrations at three sites with differing pH regimes during a 24-h period in August 2002. The current work discusses follow-up field sampling of Fisher Creek as well as field and laboratory experiments that examine in greater detail the underlying processes involved in the observed diel concentration changes. The field experiments employed in-stream chambers that were either transparent or opaque to light, filled with stream water and sediment (cobbles coated with hydrous Fe and Al oxides), and placed in the stream to maintain the same temperature. Three sets of laboratory experiments were performed: (1) equilibration of a Cu(II) and Zn(II) containing solution with Fisher Creek stream sediment at pH 6.9 and different temperatures; (2) titration of Fisher Creek water from pH 3.1 to 7 under four different isothermal conditions; and (3) analysis of the effects of temperature on the interaction of an Fe(II) containing solution with Fisher Creek stream sediment under non-oxidizing conditions. Results of these studies are consistent with a model in which Cu, Fe(II), and to a lesser extent Zn, are adsorbed or co-precipitated with hydrous Fe and Al oxides as the pH of Fisher Creek increases from 5.3 to 7.0. The extent of metal attenuation is strongly temperature-dependent, being more pronounced in warm vs. cold water. Furthermore, the sorption/co-precipitation process is shown to be irreversible; once the Cu, Zn, and Fe(II) are removed from solution in warm water, a decrease in temperature does not release the metals back to the water column.
","language":"English","publisher":"Springer","doi":"10.1007/s11270-006-9297-5","usgsCitation":"Parker, S.R., Gammons, C.H., Jones, C.A., and Nimick, D.A., 2007, Role of hydrous iron oxide formation in attenuation and diel cycling of dissolved trace metals in a stream affected by acid rock drainage: Water, Air, & Soil Pollution, v. 181, no. 1-4, p. 247-263, https://doi.org/10.1007/s11270-006-9297-5.","productDescription":"17 p.","startPage":"247","endPage":"263","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240209,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana","otherGeospatial":"Fisher Creek","volume":"181","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2006-12-08","publicationStatus":"PW","scienceBaseUri":"505aae55e4b0c8380cd87090","contributors":{"authors":[{"text":"Parker, Stephen R.","contributorId":140802,"corporation":false,"usgs":false,"family":"Parker","given":"Stephen","email":"","middleInitial":"R.","affiliations":[{"id":13574,"text":"Montana Tech of the University of Montana, Butte, MT","active":true,"usgs":false}],"preferred":false,"id":424517,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gammons, Chris","contributorId":140801,"corporation":false,"usgs":false,"family":"Gammons","given":"Chris","affiliations":[{"id":13574,"text":"Montana Tech of the University of Montana, Butte, MT","active":true,"usgs":false}],"preferred":false,"id":424516,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jones, Clain A.","contributorId":69917,"corporation":false,"usgs":false,"family":"Jones","given":"Clain","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424518,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nimick, David A. dnimick@usgs.gov","contributorId":421,"corporation":false,"usgs":true,"family":"Nimick","given":"David","email":"dnimick@usgs.gov","middleInitial":"A.","affiliations":[{"id":5050,"text":"WY-MT Water Science Center","active":true,"usgs":true},{"id":573,"text":"Special Applications Science Center","active":true,"usgs":true}],"preferred":true,"id":424519,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}