We examined seasonal and spatial variation in bacterioplankton composition in the Sacramento-San Joaquin River Delta (CA) using terminal restriction fragment length polymorphism (T-RFLP) analysis. Cloned 16S rRNA genes from this system were used for putative identification of taxa dominating the T-RFLP profiles. Both cloning and T-RFLP analysis indicated that Actinobacteria, Verrucomicrobia, Cytophaga-Flavobacterium and Proteobacteria were the most abundant bacterioplankton groups in the Delta. Despite the broad variety of sampled habitats (deep water channels, lakes, marshes, agricultural drains, freshwater and brackish areas), and the spatial and temporal differences in hydrology, temperature and water chemistry among the sampling campaigns, T-RFLP electropherograms from all samples were similar, indicating that the same bacterioplankton phylotypes dominated in the various habitats of the Delta throughout the year. However, principal component analysis (PCA) and partial least-squares regression (PLS) of T-RFLP profiles revealed consistent grouping of samples on a seasonal, but not a spatial, basis. b-Proteobacteria related to Ralstonia, Actinobacteria related to Microthrix, and b-Proteobacteria identical to the environmental Clone LD12 had the highest relative abundance in summer/fall T-RFLP profiles and were associated with low river flow, high pH, and a number of optical and chemical characteristics of dissolved organic carbon (DOC) indicative of an increased proportion of phytoplankton-produced organic material as opposed to allochthonous, terrestrially derived organic material. On the other hand, Geobacter-related b-Proteobacteria showed a relative increase in abundance in T-RFLP analysis during winter/spring, and probably were washed out from watershed soils or sediment. Various phylotypes associated with the same phylogenetic division, based on tentative identification of T-RFLP fragments, exhibited diverse seasonal patterns, suggesting that ecological roles of Delta bacterioplankton were partitioned at the genus or species level.
","language":"English","publisher":"Inter-Research Science Publisher","doi":"10.3354/ame031085","issn":"09483055","usgsCitation":"Stepanauskas, R., Moran, M., Bergamaschi, B., and Hollibaugh, J., 2003, Covariance of bacterioplankton composition and environmental variables in a temperate delta system: Aquatic Microbial Ecology, v. 31, no. 1, p. 85-98, https://doi.org/10.3354/ame031085.","productDescription":"14 p.","startPage":"85","endPage":"98","costCenters":[],"links":[{"id":478479,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/ame031085","text":"Publisher Index Page"},{"id":387208,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc90e4b0c8380cd4e30d","contributors":{"authors":[{"text":"Stepanauskas, R.","contributorId":61937,"corporation":false,"usgs":true,"family":"Stepanauskas","given":"R.","affiliations":[],"preferred":false,"id":407164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moran, M.A.","contributorId":62385,"corporation":false,"usgs":true,"family":"Moran","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":407165,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergamaschi, B.A. 0000-0002-9610-5581","orcid":"https://orcid.org/0000-0002-9610-5581","contributorId":22401,"corporation":false,"usgs":true,"family":"Bergamaschi","given":"B.A.","affiliations":[],"preferred":false,"id":407162,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hollibaugh, J.T.","contributorId":22886,"corporation":false,"usgs":true,"family":"Hollibaugh","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":407163,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70025910,"text":"70025910 - 2003 - Use of hydraulic head to estimate volumetric gas content and ebullition flux in northern peatlands","interactions":[],"lastModifiedDate":"2018-11-16T08:40:41","indexId":"70025910","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","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":"Use of hydraulic head to estimate volumetric gas content and ebullition flux in northern peatlands","docAbstract":"Hydraulic head was overpressured at middepth in a 4.2‐m thick raised bog in the Glacial Lake Agassiz peatlands of northern Minnesota, and fluctuated in response to atmospheric pressure. Barometric efficiency (BE), determined by calculating ratios of change in hydraulic head to change in atmospheric pressure, ranged from 0.05 to 0.15 during July through November of both 1997 and 1998. The overpressuring and a BE response were caused by free‐phase gas contained primarily in the center of the peat column between two or more semielastic, semiconfining layers of more competent peat. Two methods were used to determine the volume of gas bubbles contained in the peat, one using the degree of overpressuring in the middepth of the peat, and the other relating BE to specific yield of the shallow peat. The volume of gas calculated from the overpressuring method averaged 9%, assuming that the gas was distributed over a 2‐m thick overpressured interval. The volume of gas using the BE method averaged 13%. Temporal changes in overpressuring and in BE indicate that the volume of gaseous‐phase gas also changed with time, most likely because of rapid degassing (ebullition) that allowed sudden loss of gas to the atmosphere. Estimates of gas released during the largest ebullition events ranged from 0.3 to 0.7 mol m−2 d−1. These ebullition events may contribute a significant source of methane and carbon dioxide to the atmosphere that has so far largely gone unmeasured by gas‐flux chambers or tower‐mounted sensors.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2002WR001377","usgsCitation":"Rosenberry, D.O., Glaser, P.H., Siegel, D.I., and Weeks, E.P., 2003, Use of hydraulic head to estimate volumetric gas content and ebullition flux in northern peatlands: Water Resources Research, v. 39, no. 3, p. 13-1-13-10, https://doi.org/10.1029/2002WR001377.","productDescription":"Article 1066; 10 p.","startPage":"13-1","endPage":"13-10","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":478572,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2002wr001377","text":"Publisher Index Page"},{"id":234908,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"3","noUsgsAuthors":false,"publicationDate":"2003-03-20","publicationStatus":"PW","scienceBaseUri":"505bbf25e4b08c986b3299a3","contributors":{"authors":[{"text":"Rosenberry, Donald O. 0000-0003-0681-5641 rosenber@usgs.gov","orcid":"https://orcid.org/0000-0003-0681-5641","contributorId":1312,"corporation":false,"usgs":true,"family":"Rosenberry","given":"Donald","email":"rosenber@usgs.gov","middleInitial":"O.","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":407042,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Glaser, Paul H.","contributorId":178129,"corporation":false,"usgs":false,"family":"Glaser","given":"Paul","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":407041,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Siegel, Donald I.","contributorId":178130,"corporation":false,"usgs":false,"family":"Siegel","given":"Donald","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":407044,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Weeks, Edwin P. epweeks@usgs.gov","contributorId":2576,"corporation":false,"usgs":true,"family":"Weeks","given":"Edwin","email":"epweeks@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":407043,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70025867,"text":"70025867 - 2003 - Herbicides and transformation products in surface waters of the Midwestern United States","interactions":[],"lastModifiedDate":"2018-11-19T10:39:55","indexId":"70025867","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","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":"Herbicides and transformation products in surface waters of the Midwestern United States","docAbstract":"Most herbicides applied to crops are adsorbed by plants or transformed (degraded) in the soil, but small fractions are lost from fields and either move to streams in overland runoff, near surface flow, or subsurface drains, or they infiltrate slowly to ground water. Herbicide transformation products (TPs) can be more or less mobile and more or less toxic in the environment than their source herbicides. To obtain information on the concentrations of selected herbicides and TPs in surface waters of the Midwestern United States, 151 water samples were collected from 71 streams and five reservoir outflows in 1998. These samples were analyzed for 13 herbicides and 10 herbicide TPs. Herbicide TPs were found to occur as frequently or more frequently than source herbicides and at concentrations that were often larger than their source herbicides. Most samples contained a mixture of more than 10 different herbicides or TPs. The ratios of TPs to herbicide concentrations can be used to determine the source of herbicides in streams. Results of a two-component mixing model suggest that on average 90 percent or more of the herbicide mass in Midwestern streams during early summer runoff events originates from the runoff and 10 percent or less comes from increased ground water discharge.","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.2003.tb04402.x","issn":"1093474X","usgsCitation":"Battaglin, W., Thurman, E., Kalkhoff, S., and Porter, S.D., 2003, Herbicides and transformation products in surface waters of the Midwestern United States: Journal of the American Water Resources Association, v. 39, no. 4, p. 743-756, https://doi.org/10.1111/j.1752-1688.2003.tb04402.x.","productDescription":"14 p.","startPage":"743","endPage":"756","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":234755,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"505a306de4b0c8380cd5d631","contributors":{"authors":[{"text":"Battaglin, W.A.","contributorId":16376,"corporation":false,"usgs":true,"family":"Battaglin","given":"W.A.","email":"","affiliations":[],"preferred":false,"id":406877,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thurman, E.M.","contributorId":102864,"corporation":false,"usgs":true,"family":"Thurman","given":"E.M.","affiliations":[],"preferred":false,"id":406879,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kalkhoff, S. J.","contributorId":28967,"corporation":false,"usgs":true,"family":"Kalkhoff","given":"S. J.","affiliations":[],"preferred":false,"id":406878,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Porter, S. D.","contributorId":8882,"corporation":false,"usgs":true,"family":"Porter","given":"S.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":406876,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70025864,"text":"70025864 - 2003 - Effects of water level, shade and time on germination and growth of freshwater marsh plants along a simulated successional gradient","interactions":[],"lastModifiedDate":"2012-03-12T17:20:23","indexId":"70025864","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2242,"text":"Journal of Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Effects of water level, shade and time on germination and growth of freshwater marsh plants along a simulated successional gradient","docAbstract":"1. We examined the effect of soil organic content (1.4, 3.6, 7.2% soil C), water level (+2, -1, -4 cm from soil surface) and duration (13 or 33 days) on 10 species that varied in abundance during succession in freshwater marshes. We also determined the effect of shade (0, 40, 80% shade) and soil organic content (1.4 and 7.2% soil C) on germination of six species over 62 days with water 0.5 cm below the soil surface. 2. Water level consistently affected species germination on both dates. Above-ground biomass was generally higher with increasing organic content of soil, but shade had little effect on germination or height. 3 The hydrologic zone in which species were found in the field was a good indicator of the response of germination to hydrology. Both early successional species and species wide-spread across the successional gradient show similar germination on all organic contents, while later successional species appear to germinate best at higher organic contents. 4. Successional changes in soils are capable of affecting plant community development, independent of disturbance.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1046/j.1365-2745.2003.00764.x","issn":"00220477","usgsCitation":"Kellogg, C., Bridgham, S., and Leicht, S.A., 2003, Effects of water level, shade and time on germination and growth of freshwater marsh plants along a simulated successional gradient: Journal of Ecology, v. 91, no. 2, p. 274-282, https://doi.org/10.1046/j.1365-2745.2003.00764.x.","startPage":"274","endPage":"282","numberOfPages":"9","costCenters":[],"links":[{"id":208749,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1046/j.1365-2745.2003.00764.x"},{"id":234717,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0837e4b0c8380cd51a15","contributors":{"authors":[{"text":"Kellogg, C.H.","contributorId":82903,"corporation":false,"usgs":true,"family":"Kellogg","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":406864,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bridgham, S.D.","contributorId":40775,"corporation":false,"usgs":true,"family":"Bridgham","given":"S.D.","affiliations":[],"preferred":false,"id":406863,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Leicht, S. A.","contributorId":20951,"corporation":false,"usgs":false,"family":"Leicht","given":"S.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":406862,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70025838,"text":"70025838 - 2003 - Dissolved nickel and benthic flux in South San Francisco Bay: A potential for natural sources to dominate","interactions":[],"lastModifiedDate":"2018-11-16T08:03:57","indexId":"70025838","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1103,"text":"Bulletin of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Dissolved nickel and benthic flux in South San Francisco Bay: A potential for natural sources to dominate","docAbstract":"No abstract available.
","language":"English","publisher":"Springer","doi":"10.1007/s00128-003-0129-7","issn":"00074861","usgsCitation":"Topping, B., and Kuwabara, J., 2003, Dissolved nickel and benthic flux in South San Francisco Bay: A potential for natural sources to dominate: Bulletin of Environmental Contamination and Toxicology, v. 71, no. 1, p. 46-51, https://doi.org/10.1007/s00128-003-0129-7.","productDescription":"6 p.","startPage":"46","endPage":"51","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":208833,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00128-003-0129-7"},{"id":234868,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"South San Francisco Bay","volume":"71","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0237e4b0c8380cd4ff50","contributors":{"authors":[{"text":"Topping, B.R.","contributorId":97541,"corporation":false,"usgs":true,"family":"Topping","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":406768,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kuwabara, J.S.","contributorId":57905,"corporation":false,"usgs":true,"family":"Kuwabara","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":406767,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70025805,"text":"70025805 - 2003 - Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities: Implications for reactive transport modeling and performance assessments of nuclear waste disposal sites","interactions":[],"lastModifiedDate":"2018-11-19T09:14:44","indexId":"70025805","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities: Implications for reactive transport modeling and performance assessments of nuclear waste disposal sites","docAbstract":"One-dimensional (1D) geochemical transport modeling is used to demonstrate the effects of speciation and sorption reactions on the ground-water transport of Np and Pu, two redox-sensitive elements. Earlier 1D simulations (Reardon, 1981) considered the kinetically limited dissolution of calcite and its effect on ion-exchange reactions (involving 90Sr, Ca, Na, Mg and K), and documented the spatial variation of a 90Sr partition coefficient under both transient and steady-state chemical conditions. In contrast, the simulations presented here assume local equilibrium for all reactions, and consider sorption on constant potential, rather than constant charge, surfaces. Reardon's (1981) seminal findings on the spatial and temporal variability of partitioning (of 90Sr) are reexamined and found partially caused by his assumption of a kinetically limited reaction.
In the present work, sorption is assumed the predominant retardation process controlling Pu and Np transport, and is simulated using a diffuse-double-layer-surface-complexation (DDLSC) model. Transport simulations consider the infiltration of Np- and Pu-contaminated waters into an initially uncontaminated environment, followed by the cleanup of the resultant contamination with uncontaminated water. Simulations are conducted using different spatial distributions of sorption capacities (with the same total potential sorption capacity, but with different variances and spatial correlation structures). Results obtained differ markedly from those that would be obtained in transport simulations using constant Kd, Langmuir or Freundlich sorption models. When possible, simulation results (breakthrough curves) are fitted to a constant Kdadvection–dispersion transport model and compared. Functional differences often are great enough that they prevent a meaningful fit of the simulation results with a constant Kd (or even a Langmuir or Freundlich) model, even in the case of Np, a weakly sorbed radionuclide under the simulation conditions. Functional behaviors that cannot be fit include concentration trend reversals and radionuclide desorption spikes. Other simulation results are fit successfully but the fitted parameters (Kd and dispersivity) vary significantly depending on simulation conditions (e.g. “infiltration” vs. “cleanup” conditions). Notably, an increase in the variance of the specified sorption capacities results in a marked increase in the dispersion of the radionuclides.
The results presented have implications for the simulation of radionuclide migration in performance assessments of nuclear waste-disposal sites, for the future monitoring of those sites, and more generally for modeling contaminant transport in ground-water environments.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0098-3004(03)00009-8","issn":"00983004","usgsCitation":"Glynn, P.D., 2003, Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities: Implications for reactive transport modeling and performance assessments of nuclear waste disposal sites: Computers & Geosciences, v. 29, no. 3, p. 331-349, https://doi.org/10.1016/S0098-3004(03)00009-8.","productDescription":"19 p.","startPage":"331","endPage":"349","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":235008,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208915,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0098-3004(03)00009-8"}],"volume":"29","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5bcae4b0c8380cd6f7e0","contributors":{"authors":[{"text":"Glynn, P. D.","contributorId":7008,"corporation":false,"usgs":true,"family":"Glynn","given":"P.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":406640,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70025773,"text":"70025773 - 2003 - Baseflow and stormflow metal fluxes from two small agricultural catchments in the Coastal Plain of the Chesapeake Bay Basin, United States","interactions":[],"lastModifiedDate":"2012-03-12T17:20:23","indexId":"70025773","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Baseflow and stormflow metal fluxes from two small agricultural catchments in the Coastal Plain of the Chesapeake Bay Basin, United States","docAbstract":"Annual yields (fluxes per unit area) of Al, Mn, Fe, Ni, Cd, Pb, Zn, Cu, Cr, Co, As and Se were estimated for two small non-tidal stream catchments on the Eastern Shore of the Chesapeake Bay, United States - a poorly drained dissected-upland watershed in the Nanticoke River Basin, and a well-drained feeder tributary in the lower reaches of the Chester River Basin. Both watersheds are dominated by agriculture. A hydrograph-separation technique was used to determine the baseflow and stormflow components of metal yields, thus providing important insights into the effects of hydrology and climate on the transport of metals. Concentrations of suspended-sediment were used as a less-costly proxy of metal concentrations which are generally associated with particles. Results were compared to other studies in Chesapeake Bay and to general trends in metal concentrations across the United States. The study documented a larger than background yield of Zn and Co from the upper Nanticoke River Basin and possibly enriched concentrations of As, Cd and Se from both the upper Nanticoke River and the Chesterville Branch (a tributary of the lower Chester River). The annual yield of total Zn from the Nanticoke River Basin in 1998 was 18,000 g/km2/a, and was two to three times higher than yields reported from comparable river basins in the region. Concentrations of Cd also were high in both basins when compared to crustal concentrations and to other national data, but were within reasonable agreement with other Chesapeake Bay studies. Thus, Cd may be enriched locally either in natural materials or from agriculture.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0883-2927(02)00103-8","issn":"08832927","usgsCitation":"Miller, C., Foster, G., and Majedi, B., 2003, Baseflow and stormflow metal fluxes from two small agricultural catchments in the Coastal Plain of the Chesapeake Bay Basin, United States: Applied Geochemistry, v. 18, no. 4, p. 483-501, https://doi.org/10.1016/S0883-2927(02)00103-8.","startPage":"483","endPage":"501","numberOfPages":"19","costCenters":[],"links":[{"id":208628,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0883-2927(02)00103-8"},{"id":234498,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059efd4e4b0c8380cd4a48c","contributors":{"authors":[{"text":"Miller, C.V.","contributorId":41026,"corporation":false,"usgs":true,"family":"Miller","given":"C.V.","email":"","affiliations":[],"preferred":false,"id":406524,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, G.D.","contributorId":98464,"corporation":false,"usgs":true,"family":"Foster","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":406525,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Majedi, B.F.","contributorId":108289,"corporation":false,"usgs":true,"family":"Majedi","given":"B.F.","affiliations":[],"preferred":false,"id":406526,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70025747,"text":"70025747 - 2003 - Stable isotope fractionation of selenium by natural microbial consortia","interactions":[],"lastModifiedDate":"2018-11-16T07:56:53","indexId":"70025747","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Stable isotope fractionation of selenium by natural microbial consortia","docAbstract":"The mobility and bioavailability of Se depend on its redox state, and reduction of Se oxyanions to less mobile, reduced species controls transport of this potentially toxic element in the environment. Stable isotope fractionation of Se is currently being developed as an indicator of Se immobilization through reduction. In this study, Se isotope fractionation resulting from reduction of Se(VI) and Se(IV) oxyanions by natural microbial consortia was measured in sediment slurry experiments under nearly natural conditions, with no substrate added. Experiments were conducted with a wide range of initial Se concentrations and with sediment and water from three locations with contrasting environmental settings. The products of Se(VI) and Se(IV) reduction were enriched in the lighter isotopes relative to the reactants. Shifts of -2.60/00 to -3.10/00 and -5.50/00 to -5.70/00, respectively, were observed in the 80Se/76Se ratio. These isotopic fractionations did not depend significantly on initial Se concentrations, which were varied from 22 μg/l to 8 mg/l, or on geochemical differences among the sediments. These results provide estimates of Se isotope fractionation in organic-rich wetland environments but may not be appropriate for substrate-poor aquifers and marine sediments.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0009-2541(02)00391-1","issn":"00092541","usgsCitation":"Ellis, A., Johnson, T., Herbel, M., and Bullen, T., 2003, Stable isotope fractionation of selenium by natural microbial consortia: Chemical Geology, v. 195, no. 1-4, p. 119-129, https://doi.org/10.1016/S0009-2541(02)00391-1.","productDescription":"11 p.","startPage":"119","endPage":"129","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":234674,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208720,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0009-2541(02)00391-1"}],"volume":"195","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9677e4b08c986b31b512","contributors":{"authors":[{"text":"Ellis, A.S.","contributorId":10586,"corporation":false,"usgs":true,"family":"Ellis","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":406421,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, T.M.","contributorId":22332,"corporation":false,"usgs":true,"family":"Johnson","given":"T.M.","affiliations":[],"preferred":false,"id":406422,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Herbel, M.J.","contributorId":57232,"corporation":false,"usgs":true,"family":"Herbel","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":406423,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bullen, T.D.","contributorId":79911,"corporation":false,"usgs":true,"family":"Bullen","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":406424,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70194921,"text":"70194921 - 2003 - Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions: Appendix A of Heat as a tool for studying the movement of ground water near streams (Cir1260)","interactions":[{"subject":{"id":70194921,"text":"70194921 - 2003 - Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions: Appendix A of Heat as a tool for studying the movement of ground water near streams (Cir1260)","indexId":"70194921","publicationYear":"2003","noYear":false,"chapter":"Appendix A","title":"Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions: Appendix A of Heat as a tool for studying the movement of ground water near streams (Cir1260)"},"predicate":"IS_PART_OF","object":{"id":52668,"text":"cir1260 - 2003 - Heat as a tool for studying the movement of ground water near streams","indexId":"cir1260","publicationYear":"2003","noYear":false,"title":"Heat as a tool for studying the movement of ground water near streams"},"id":1}],"isPartOf":{"id":52668,"text":"cir1260 - 2003 - Heat as a tool for studying the movement of ground water near streams","indexId":"cir1260","publicationYear":"2003","noYear":false,"title":"Heat as a tool for studying the movement of ground water near streams"},"lastModifiedDate":"2020-02-09T17:10:25","indexId":"70194921","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"chapter":"Appendix A","title":"Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions: Appendix A of Heat as a tool for studying the movement of ground water near streams (Cir1260)","docAbstract":"Advances in electronics leading to improved sensor technologies, large-scale circuit integration, and attendant miniaturization have created new opportunities to use heat as a tracer of subsurface flow. Because nature provides abundant thermal forcing at the land surface, heat is particularly useful in studying stream-groundwater interactions. This appendix describes methods for obtaining the thermal data needed in heat-based investigations of shallow subsurface flow.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Heat as a tool for studying the movement of ground water near streams (Cir1260)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Stonestrom, D.A., and Blasch, K.W., 2003, Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions: Appendix A of Heat as a tool for studying the movement of ground water near streams (Cir1260), 8 p.","productDescription":"8 p.","startPage":"73","endPage":"80","costCenters":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":350768,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/2003/circ1260/pdf/Circ1260.pdf#page=73"},{"id":350769,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a7040d8e4b06e28e9cae501","contributors":{"editors":[{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":726126,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Constantz, Jim","contributorId":66338,"corporation":false,"usgs":true,"family":"Constantz","given":"Jim","affiliations":[],"preferred":false,"id":726127,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":726124,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blasch, Kyle W. 0000-0002-0590-0724 kblasch@usgs.gov","orcid":"https://orcid.org/0000-0002-0590-0724","contributorId":1631,"corporation":false,"usgs":true,"family":"Blasch","given":"Kyle","email":"kblasch@usgs.gov","middleInitial":"W.","affiliations":[{"id":5050,"text":"WY-MT Water Science Center","active":true,"usgs":true}],"preferred":true,"id":726125,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1015333,"text":"1015333 - 2003 - Multiple pathways for woody plant establishment on floodplains at local to regional scales","interactions":[],"lastModifiedDate":"2017-12-26T10:27:13","indexId":"1015333","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2242,"text":"Journal of Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Multiple pathways for woody plant establishment on floodplains at local to regional scales","docAbstract":"1. The structure and functioning of riverine ecosystems is dependent upon regional setting and the interplay of hydrologic regime and geomorphologic processes. We used a retrospective analysis to study recruitment along broad, alluvial valley segments (parks) and canyon segments of the unregulated Yampa River and the regulated Green River in the upper Colorado River basin, USA. We precisely aged 811 individuals of Populus deltoides ssp. wislizenii (native) and Tamarix ramosissima (exotic) from 182 wooded patches and determined the elevation and character of the germination surface for each. We used logistic regression to relate recruitment events (presence or absence of cohort) to five flow and two weather parameters.
2. Woody plant establishment occurred via multiple pathways at patch, reach and segment scales. Recruitment occurred through establishment on (1) vertically accreting bars in the unregulated alluvial valley, (2) high alluvial floodplain surfaces during rare large flood events, (3) vertically accreting channel margin deposits in canyon pools and eddies, (4) vertically accreting intermittent/abandoned channels, (5) low elevation gravel bars and debris fans in canyons during multi-year droughts, and (6) bars and channels formed prior to flow regulation on the dammed river during controlled flood events.
3. The Yampa River's peak flow was rarely included in models estimating the likelihood that recruitment would occur in any year. Flow variability and the interannual pattern of flows, rather than individual large floods, control most establishment.
4. Regulation of the Green River flow since 1962 has had different effects on woody vegetation recruitment in canyons and valleys. The current regime mimics drought in a canyon setting, accelerating Tamarix invasion whereas in valleys the ongoing geomorphic adjustment of the channel, combined with reduced flow variability, has nearly eliminated Populus establishment.
5. A single year's flow or a particular pattern of flows over a sequence of years, whether natural or man-made, produces different recruitment opportunities in alluvial and canyon reaches, in diverse landforms within a particular river reach, and for Populus and Tamarix. The design of flows to restore riparian ecosystems must consider these multiple pathways and adjust the seasonal timing, magnitude and interannual frequency of flows to match the desired outcome.
The U.S. Fish and Wildlife Service proposed the restoration of wetlands impacted by a series of drainage ditches and pools located in an extensive undeveloped peatland in the Seney National Wildlife Refuge, Michigan. This study examined the nature and extent of degradation to the Marsh Creek wetlands caused by alteration of natural hydrology by a water-storage pool (C-3 Pool) that intersects the Marsh Creek channel. We tested the hypothesis that a reduction in moderate-intensity disturbance associated with natural water-level fluctuations below the C-3 dike contributed to lower species richness, reduced floristic quality and a larger tree and shrub component than vegetation upstream from the pool. Wetland plant communities were sampled quantitatively and analyzed for species richness, floristic quality and physiognomy. Aerial photographs, GIS databases and GPS data contributed to the characterization and analysis of the Marsh Creek wetlands. Results showed that there was lower species richness in vegetated areas downstream from the pool, but not the anticipated growth in shrubs. Wetland vegetation upstream and downstream from the pool had similar floristic quality, except for a greater number of weedy taxa above the pool. Seepage through the pool dike and localized ground-water discharge created conditions very similar to those observed around beaver dams in Marsh Creek. In essence, the dike containing the C-3 Pool affected hydrology and wetland plant communities in a manner similar to an enormous beaver dam, except that it did not allow seasonal flooding episodes to occur. Management actions to release water from the pool into the original Marsh Creek channel at certain times and in certain amounts that mimic the natural flow regime would be expected to promote greater plant species richness and minimize the negative impacts of the dike.
","language":"English","publisher":"BioOne","doi":"10.1674/0003-0031(2003)150[0199:DISFVU]2.0.CO;2","usgsCitation":"Kowalski, K., and Wilcox, D.A., 2003, Differences in sedge fen vegetation upstream and downstream from a managed impoundment: American Midland Naturalist, v. 150, no. 2, p. 199-220, https://doi.org/10.1674/0003-0031(2003)150[0199:DISFVU]2.0.CO;2.","productDescription":"22 p.","startPage":"199","endPage":"220","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":478476,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/20.500.12648/2330","text":"External Repository"},{"id":387203,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"150","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d75a","contributors":{"authors":[{"text":"Kowalski, Kurt P. 0000-0002-8424-4701 kkowalski@usgs.gov","orcid":"https://orcid.org/0000-0002-8424-4701","contributorId":3768,"corporation":false,"usgs":true,"family":"Kowalski","given":"Kurt P.","email":"kkowalski@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":310222,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilcox, Douglas A.","contributorId":36880,"corporation":false,"usgs":true,"family":"Wilcox","given":"Douglas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":310223,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1015080,"text":"1015080 - 2003 - Lake-specific responses to elevated atmospheric nitrogen deposition in the Colorado Rocky Mountains, U.S.A","interactions":[],"lastModifiedDate":"2021-03-17T14:14:47.708225","indexId":"1015080","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Lake-specific responses to elevated atmospheric nitrogen deposition in the Colorado Rocky Mountains, U.S.A","docAbstract":"We explored variability among subalpine lakes sharing very similar climate and atmospheric conditions, but differing in watershed characteristics, hydrology, and food web structure. Special attention was given to nitrogen (N) dynamics because the study area receives some of the highest levels of atmospheric N deposition in the Rocky Mountains. We asked if the effect of regional N deposition would be manifested uniformly among neighboring lakes both in terms of ambient conditions and responses to greater nutrient inputs. Catchment vegetation appeared to be the main determinant of ambient nitrate (NO3), phosphate (PO4), and dissolved organic carbon (DOC) concentrations, although in-lake differences in recycling produced variable and contrasting NH4 levels. Phytoplankton chlorophyll atemporarily responded to early season NO3 peaks in the lakes with rocky watersheds, but chlorophyll means over the ice-free season were remarkably similar among lakes despite differences in both nutrient supply and zooplankton grazing. In most cases, phosphorus was limiting to phytoplankton growth, although the importance of N deficiencies was greater in lakes with forested watersheds and fringing wetlands.
","language":"English","publisher":"Springer","doi":"10.1023/B:HYDR.0000008636.13361.47","usgsCitation":"Nydick, K., LaFrancois, B., Baron, J., and Johnson, B., 2003, Lake-specific responses to elevated atmospheric nitrogen deposition in the Colorado Rocky Mountains, U.S.A: Hydrobiologia, v. 510, no. 1-3, p. 103-114, https://doi.org/10.1023/B:HYDR.0000008636.13361.47.","productDescription":"12 p.","startPage":"103","endPage":"114","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":129950,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Rocky Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -108.643798828125,\n 37.020098201368114\n ],\n [\n -104.8974609375,\n 37.020098201368114\n ],\n [\n -104.8974609375,\n 40.88029480552824\n ],\n [\n -108.643798828125,\n 40.88029480552824\n ],\n [\n -108.643798828125,\n 37.020098201368114\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"510","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b42b8","contributors":{"authors":[{"text":"Nydick, K. R.","contributorId":9991,"corporation":false,"usgs":false,"family":"Nydick","given":"K. R.","affiliations":[],"preferred":false,"id":322078,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"LaFrancois, B. M.","contributorId":34457,"corporation":false,"usgs":false,"family":"LaFrancois","given":"B. M.","affiliations":[],"preferred":false,"id":322080,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baron, Jill 0000-0002-5902-6251 jill_baron@usgs.gov","orcid":"https://orcid.org/0000-0002-5902-6251","contributorId":194124,"corporation":false,"usgs":true,"family":"Baron","given":"Jill","email":"jill_baron@usgs.gov","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":322079,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, B. M.","contributorId":71511,"corporation":false,"usgs":false,"family":"Johnson","given":"B. M.","affiliations":[],"preferred":false,"id":322081,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70025850,"text":"70025850 - 2003 - Geomorphic and hydrologic assessment of erosion hazards at the Norman municipal landfill, Canadian River floodplain, central Oklahoma","interactions":[],"lastModifiedDate":"2018-11-16T10:21:33","indexId":"70025850","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1574,"text":"Environmental & Engineering Geoscience","printIssn":"1078-7275","active":true,"publicationSubtype":{"id":10}},"title":"Geomorphic and hydrologic assessment of erosion hazards at the Norman municipal landfill, Canadian River floodplain, central Oklahoma","docAbstract":"The Norman, Oklahoma, municipal landfill closed in 1985 after 63 years of operation, because it was identified as a point source of hazardous leachate composed of organic and inorganic compounds. The landfill is located on the floodplain of the Canadian River, a sand-bed river characterized by erodible channel boundaries and by large variation in mean monthly discharges. In 1986, floodwaters eroded riprap protection at the southern end of the landfill and penetrated the landfill's clay cap, thereby exposing the landfill contents. The impact of this moderate-magnitude flood event (Q12) was the catalyst to investigate erosion hazards at the Norman landfill. This geomorphic investigation analyzed floodplain geomorphology and historical channel changes, flood-frequency distributions, an erosion threshold, the geomorphic effectiveness of discharge events, and other factors that influence erosion hazards at the landfill site. The erosion hazard at the Norman landfill is a function of the location of the landfill with respect to the channel thalweg, erosional resistance of the channel margins, magnitude and duration of discrete discharge events, channel form and hydraulic geometry, and cumulative effects related to a series of discharge events. Based on current climatic conditions and historical channel changes, a minimum erosion threshold is set at bankfull discharge (Q = 572 m3/s). The annual probability of exceeding this threshold is 0.53. In addition, this analysis indicates that peak stream power is less informative than total energy expenditures when estimating the erosion potential or geomorphic effectiveness of discrete discharge events. On the Canadian River, long-duration, moderate-magnitude floods can have larger total energy expenditures than shorter-duration, high-magnitude floods and therefore represent the most serious erosion hazard to floodplain structures.
","language":"English","publisher":"Geological Society of America","doi":"10.2113/9.3.241","issn":"10787275","usgsCitation":"Curtis, J.A., and Whitney, J.W., 2003, Geomorphic and hydrologic assessment of erosion hazards at the Norman municipal landfill, Canadian River floodplain, central Oklahoma: Environmental & Engineering Geoscience, v. 9, no. 3, p. 241-252, https://doi.org/10.2113/9.3.241.","productDescription":"12 p.","startPage":"241","endPage":"252","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":234503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208632,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/9.3.241"}],"volume":"9","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a277de4b0c8380cd5992f","contributors":{"authors":[{"text":"Curtis, Jennifer A. 0000-0001-7766-994X jacurtis@usgs.gov","orcid":"https://orcid.org/0000-0001-7766-994X","contributorId":927,"corporation":false,"usgs":true,"family":"Curtis","given":"Jennifer","email":"jacurtis@usgs.gov","middleInitial":"A.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":406816,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":406815,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185657,"text":"70185657 - 2003 - CALFED: An experiment in science and decisionmaking","interactions":[],"lastModifiedDate":"2021-07-28T16:14:22.114083","indexId":"70185657","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1522,"text":"Environment","active":true,"publicationSubtype":{"id":10}},"title":"CALFED: An experiment in science and decisionmaking","docAbstract":"The CALFED Bay-Delta Program faces a challenging assignment: to develop a collaborative state-federal management plan for the complex river system and involve multiple stakeholders (primarily municipal, agricultural, and environmental entities) whose interests frequently are in direct conflict. Although many resource-management issues involve multiple stakeholders and conflict is integral to their discussion, the CALFED experience is unique because of its shared state and federal roles, the magnitude and significance of stakeholder participation, and the complexity of the scientific issues involved.
","language":"English","publisher":"Heldref Publications","doi":"10.1080/00139150309604521","usgsCitation":"Taylor, K.A., Jacobs, K.L., and Luoma, S.N., 2003, CALFED: An experiment in science and decisionmaking: Environment, v. 45, no. 1, p. 30-41, https://doi.org/10.1080/00139150309604521.","productDescription":"12 p.","startPage":"30","endPage":"41","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":387509,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58da251ce4b0543bf7fda810","contributors":{"authors":[{"text":"Taylor, Kimberly A. 0000-0002-0095-6403 ktaylor@usgs.gov","orcid":"https://orcid.org/0000-0002-0095-6403","contributorId":1601,"corporation":false,"usgs":true,"family":"Taylor","given":"Kimberly","email":"ktaylor@usgs.gov","middleInitial":"A.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":686255,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jacobs, Katharine L.","contributorId":189055,"corporation":false,"usgs":false,"family":"Jacobs","given":"Katharine","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":686256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luoma, Samuel N. 0000-0001-5443-5091 snluoma@usgs.gov","orcid":"https://orcid.org/0000-0001-5443-5091","contributorId":2287,"corporation":false,"usgs":true,"family":"Luoma","given":"Samuel","email":"snluoma@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":686257,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70185654,"text":"70185654 - 2003 - Atomic weights of the elements. Review 2000 (IUPAC Technical Report)","interactions":[],"lastModifiedDate":"2018-11-19T09:56:11","indexId":"70185654","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3207,"text":"Pure and Applied Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Atomic weights of the elements. Review 2000 (IUPAC Technical Report)","docAbstract":"Contaminant exposures in natural systems can be highly variable. This variability is superimposed upon cyclic variability in biological processes. Together, these factors can confound determination of contaminant effects. Long term, multidisciplined studies with high frequency sampling can be effective in overcoming such obstacles. While studying trace metal contamination in the tissues of the clam, Potamocorbula amurensis, in the northern reach of San Francisco Bay, an episode of high Ag concentrations was identified (maximum of 5.5 µg g−1) at two mid-estuary sites. High concentrations were not seen in clams up-estuary (maximum of 1.92 µg g−1) from these sites and were reduced down-estuary (maximum of 2.67 µg g−1). Silver is not common naturally in the environment, so its elevated presence is usually indicative of anthropogenic influences such as municipal and industrial discharge. Monthly sampling of reproductive status of clams characterized the reproductive cycle and differences in the patterns of reproductive activity that corresponded to changes in Ag tissue concentrations. The proportion of reproductive clams was less than 60% during periods when tissue concentrations were high (generally >2 µg g−1). When tissue concentrations of Ag decreased (≤1 µg g−1), the proportion of reproductive clams was 80 to 100%. A comparison between the annual proportion of reproductive clams and annual Ag tissue concentrations showed a significant negative correlation. No other measured environmental variables were correlated with reproductive impairment. The weight-of-evidence approach strongly supports a cause and effect relationship between Ag contamination and reduced reproductive activity in P. amurensis.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/713609854","usgsCitation":"Brown, C.L., Parchaso, F., Thompson, J.K., and Luoma, S.N., 2003, Assessing toxicant effects in a complex estuary--A case study of effects of silver on reproduction in the bivalve, Potamocurbula amurensis, in San Francisco Bay: Human and Ecological Risk Assessment, v. 9, no. 1, p. 95-119, https://doi.org/10.1080/713609854.","productDescription":"25 p. ","startPage":"95","endPage":"119","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338354,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay ","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.38906860351562,\n 38.19718009396176\n ],\n [\n -122.51815795898436,\n 38.111869281948955\n ],\n [\n -122.51953124999999,\n 38.00049145082287\n ],\n [\n -122.51266479492188,\n 37.90194871393947\n ],\n [\n -122.50305175781249,\n 37.84124135065978\n ],\n [\n -122.41241455078125,\n 37.667516276171426\n ],\n [\n -122.36160278320311,\n 37.568528265476075\n ],\n [\n -122.09243774414062,\n 37.41052799460727\n ],\n [\n -121.95510864257811,\n 37.41925395973696\n ],\n [\n -121.91802978515625,\n 37.46395857276409\n ],\n [\n -122.10479736328125,\n 37.61423141542417\n ],\n [\n -122.18170166015625,\n 37.75334401310656\n ],\n [\n -122.30804443359375,\n 37.91820111976663\n ],\n [\n -122.32177734375,\n 37.98642201062662\n ],\n [\n -122.22427368164064,\n 38.06647354576796\n ],\n [\n -122.244873046875,\n 38.124834313825076\n ],\n [\n -122.28332519531249,\n 38.226314067139185\n ],\n [\n -122.37808227539061,\n 38.20797181420939\n ],\n [\n -122.38906860351562,\n 38.19718009396176\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"9","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58da251ce4b0543bf7fda814","contributors":{"authors":[{"text":"Brown, Cynthia L. clbrown@usgs.gov","contributorId":206,"corporation":false,"usgs":true,"family":"Brown","given":"Cynthia","email":"clbrown@usgs.gov","middleInitial":"L.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":686236,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parchaso, Francis 0000-0002-9471-7787 parchaso@usgs.gov","orcid":"https://orcid.org/0000-0002-9471-7787","contributorId":173016,"corporation":false,"usgs":true,"family":"Parchaso","given":"Francis","email":"parchaso@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":686237,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, Janet K. 0000-0002-1528-8452 jthompso@usgs.gov","orcid":"https://orcid.org/0000-0002-1528-8452","contributorId":1009,"corporation":false,"usgs":true,"family":"Thompson","given":"Janet","email":"jthompso@usgs.gov","middleInitial":"K.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":686238,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Luoma, Samuel N. 0000-0001-5443-5091 snluoma@usgs.gov","orcid":"https://orcid.org/0000-0001-5443-5091","contributorId":2287,"corporation":false,"usgs":true,"family":"Luoma","given":"Samuel","email":"snluoma@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":686239,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70024699,"text":"70024699 - 2003 - Mass load estimation errors utilizing grab sampling strategies in a karst watershed","interactions":[],"lastModifiedDate":"2021-08-21T18:18:32.700036","indexId":"70024699","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","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":"Mass load estimation errors utilizing grab sampling strategies in a karst watershed","docAbstract":"Developing a mass load estimation method appropriate for a given stream and constituent is difficult due to inconsistencies in hydrologic and constituent characteristics. The difficulty may be increased in flashy flow conditions such as karst. Many projects undertaken are constrained by budget and manpower and do not have the luxury of sophisticated sampling strategies. The objectives of this study were to: (1) examine two grab sampling strategies with varying sampling intervals and determine the error in mass load estimates, and (2) determine the error that can be expected when a grab sample is collected at a time of day when the diurnal variation is most divergent from the daily mean. Results show grab sampling with continuous flow to be a viable data collection method for estimating mass load in the study watershed. Comparing weekly, biweekly, and monthly grab sampling, monthly sampling produces the best results with this method. However, the time of day the sample is collected is important. Failure to account for diurnal variability when collecting a grab sample may produce unacceptable error in mass load estimates. The best time to collect a sample is when the diurnal cycle is nearest the daily mean.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.2003.tb04423.x","issn":"1093474X","usgsCitation":"Fogle, A., Taraba, J., and Dinger, J., 2003, Mass load estimation errors utilizing grab sampling strategies in a karst watershed: Journal of the American Water Resources Association, v. 39, no. 6, p. 1361-1372, https://doi.org/10.1111/j.1752-1688.2003.tb04423.x.","productDescription":"12 p.","startPage":"1361","endPage":"1372","costCenters":[],"links":[{"id":388291,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"505a524ee4b0c8380cd6c2fe","contributors":{"authors":[{"text":"Fogle, A.W.","contributorId":96051,"corporation":false,"usgs":true,"family":"Fogle","given":"A.W.","email":"","affiliations":[],"preferred":false,"id":402321,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taraba, J.L.","contributorId":51062,"corporation":false,"usgs":true,"family":"Taraba","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":402319,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dinger, J.S.","contributorId":64416,"corporation":false,"usgs":true,"family":"Dinger","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":402320,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70024950,"text":"70024950 - 2003 - Effect of hydrologic and geochemical conditions on oxygen-enhanced bioremediation in a gasoline-contaminated aquifer","interactions":[],"lastModifiedDate":"2018-11-16T10:41:35","indexId":"70024950","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1042,"text":"Bioremediation Journal","active":true,"publicationSubtype":{"id":10}},"title":"Effect of hydrologic and geochemical conditions on oxygen-enhanced bioremediation in a gasoline-contaminated aquifer","docAbstract":"The effect of pre-existing factors, e.g., hydrologic, geochemical, and microbiological properties, on the results of oxygen addition to a reformulated gasoline-contaminated groundwater system was studied. Oxygen addition with an oxygen-release compound (a proprietary form of magnesium peroxide produced different results with respect to dissolved oxygen (DO) generation and contaminant decrease in the two locations. Oxygen-release compound injected at the former UST source area did not significantly change measured concentrations of DO, benzene, toluene, or MTBE. Conversely, oxygen-release compound injected 200 m downgradient of the former UST source area rapidly increased DO levels, and benzene, toluene, and MTBE concentrations decreased substantially. The different results could be related to differences in hydrologic and geochemical conditions that characterized the two locations prior to oxygen addition. The lack of recharge to ground water in the paved UST source area led to a much larger geochemical sink for DO compared to ground water in the unpaved area.","language":"English","publisher":"Taylor and Francis","doi":"10.1080/713607983","issn":"10889868","usgsCitation":"Landmeyer, J., and Bradley, P., 2003, Effect of hydrologic and geochemical conditions on oxygen-enhanced bioremediation in a gasoline-contaminated aquifer: Bioremediation Journal, v. 7, no. 3-4, p. 165-177, https://doi.org/10.1080/713607983.","productDescription":"13 p.","startPage":"165","endPage":"177","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":232834,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269728,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/713607983"}],"volume":"7","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05b6e4b0c8380cd50f07","contributors":{"authors":[{"text":"Landmeyer, J. E.","contributorId":91140,"corporation":false,"usgs":true,"family":"Landmeyer","given":"J. E.","affiliations":[],"preferred":false,"id":403227,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, P. M. 0000-0001-7522-8606","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":29465,"corporation":false,"usgs":true,"family":"Bradley","given":"P. M.","affiliations":[],"preferred":false,"id":403226,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70024926,"text":"70024926 - 2003 - Modeling radium and radon transport through soil and vegetation","interactions":[],"lastModifiedDate":"2012-03-12T17:20:05","indexId":"70024926","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Modeling radium and radon transport through soil and vegetation","docAbstract":"A one-dimensional flow and transport model was developed to describe the movement of two fluid phases, gas and water, within a porous medium and the transport of 226Ra and 222Rn within and between these two phases. Included in this model is the vegetative uptake of water and aqueous 226Ra and 222Rn that can be extracted from the soil via the transpiration stream. The mathematical model is formulated through a set of phase balance equations and a set of species balance equations. Mass exchange, sink terms and the dependence of physical properties upon phase composition couple the two sets of equations. Numerical solution of each set, with iteration between the sets, is carried out leading to a set-iterative compositional model. The Petrov-Galerkin finite element approach is used to allow for upstream weighting if required for a given simulation. Mass lumping improves solution convergence and stability behavior. The resulting numerical model was applied to four problems and was found to produce accurate, mass conservative solutions when compared to published experimental and numerical results and theoretical column experiments. Preliminary results suggest that the model can be used as an investigative tool to determine the feasibility of phytoremediating radium and radon-contaminated soil. ?? 2003 Elsevier Science B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0169-7722(03)00032-9","issn":"01697722","usgsCitation":"Kozak, J., Reeves, H.W., and Lewis, B., 2003, Modeling radium and radon transport through soil and vegetation: Journal of Contaminant Hydrology, v. 66, no. 3-4, p. 179-200, https://doi.org/10.1016/S0169-7722(03)00032-9.","startPage":"179","endPage":"200","numberOfPages":"22","costCenters":[],"links":[{"id":207815,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0169-7722(03)00032-9"},{"id":233039,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5c1fe4b0c8380cd6fa59","contributors":{"authors":[{"text":"Kozak, J.A.","contributorId":50326,"corporation":false,"usgs":true,"family":"Kozak","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":403145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reeves, H. W.","contributorId":53739,"corporation":false,"usgs":true,"family":"Reeves","given":"H.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":403146,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lewis, B.A.","contributorId":66450,"corporation":false,"usgs":true,"family":"Lewis","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":403147,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70024612,"text":"70024612 - 2003 - Vegetation, soil, and flooding relationships in a blackwater floodplain forest","interactions":[],"lastModifiedDate":"2012-03-12T17:20:06","indexId":"70024612","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","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":"Vegetation, soil, and flooding relationships in a blackwater floodplain forest","docAbstract":"Hydroperiod is considered the primary determinant of plant species distribution in temperate floodplain forests, but most studies have focused on alluvial (sediment-laden) river systems. Few studies have evaluated plant community relationships in blackwater river systems of the South Atlantic Coastal Plain of North America. In this study, we characterized the soils, hydroperiod, and vegetation communities and evaluated relationships between the physical and chemical environment and plant community structure on the floodplain of the Coosawhatchie River, a blackwater river in South Carolina, USA. The soils were similar to previous descriptions of blackwater floodplain soils but had greater soil N and P availability, substantially greater clay content, and lower soil silt content than was previously reported for other blackwater river floodplains. Results of a cluster analysis showed there were five forest communities on the site, and both short-term (4 years) and long-term (50 years) flooding records documented a flooding gradient: water tupelo community > swamp tupelo > laurel oak = overcup oak > mixed oak. The long-term hydrologic record showed that the floodplain has flooded less frequently from 1994 to present than in previous decades. Detrended correspondence analysis of environmental and relative basal area values showed that 27% of the variation in overstory community structure could be explained by the first two axes; however, fitting the species distributions to the DCA axes using Gaussian regression explained 67% of the variation. Axes were correlated with elevation (flooding intensity) and soil characteristics related to rooting volume and cation nutrient availability. Our study suggests that flooding is the major factor affecting community structure, but soil characteristics also may be factors in community structure in blackwater systems. ?? 2003, The Society of Wetland Scientists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"02775212","usgsCitation":"Burke, M., King, S., Gartner, D., and Eisenbies, M., 2003, Vegetation, soil, and flooding relationships in a blackwater floodplain forest: Wetlands, v. 23, no. 4, p. 988-1002.","startPage":"988","endPage":"1002","numberOfPages":"15","costCenters":[],"links":[{"id":233199,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc1eae4b08c986b32a80a","contributors":{"authors":[{"text":"Burke, M.K.","contributorId":87248,"corporation":false,"usgs":true,"family":"Burke","given":"M.K.","email":"","affiliations":[],"preferred":false,"id":401905,"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":401907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gartner, D.","contributorId":87249,"corporation":false,"usgs":true,"family":"Gartner","given":"D.","email":"","affiliations":[],"preferred":false,"id":401906,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Eisenbies, M.H.","contributorId":82420,"corporation":false,"usgs":true,"family":"Eisenbies","given":"M.H.","affiliations":[],"preferred":false,"id":401904,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70024925,"text":"70024925 - 2003 - The typological approach to submarine groundwater discharge (SGD)","interactions":[],"lastModifiedDate":"2012-03-12T17:20:05","indexId":"70024925","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"The typological approach to submarine groundwater discharge (SGD)","docAbstract":"Coastal zone managers need to factor submarine groundwater discharge (SGD) in their integration. SGD provides a pathway for the transfer of freshwater, and its dissolved chemical burden, from the land to the coastal ocean. SGD reduces salinities and provides nutrients to specialized coastal habitats. It also can be a pollutant source, often undetected, causing eutrophication and triggering nuisance algal blooms. Despite its importance, SGD remains somewhat of a mystery in most places because it is usually unseen and difficult to measure. SGD has been directly measured at only about a hundred sites worldwide. A typology generated by the Land-Ocean Interaction in the Coastal Zone (LOICZ) Project is one of the few tools globally available to coastal resource managers for identifying areas in their jurisdiction where SGD may be a confounding process. (LOICZ is a core project of the International Geosphere/Biosphere Programme.) Of the hundreds of globally distributed parameters in the LOICZ typology, a SGD subset of potentially relevant parameters may be culled. A quantitative combination of the relevant hydrological parameters can serve as a proxy for the SGD conditions not directly measured. Web-LOICZ View, geospatial software then provides an automated approach to clustering these data into groups of locations that have similar characteristics. It permits selection of variables, of the number of clusters desired, and of the clustering criteria, and provides means of testing predictive results against independent variables. Information on the occurrence of a variety of SGD indicators can then be incorporated into regional clustering analysis. With such tools, coastal managers can focus attention on the most likely sites of SGD in their jurisdiction and design the necessary measurement and modeling programs needed for integrated management.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biogeochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1023/B:BIOG.0000006125.10467.75","issn":"01682563","usgsCitation":"Bokuniewicz, H., Buddemeier, R., Maxwell, B., and Smith, C., 2003, The typological approach to submarine groundwater discharge (SGD): Biogeochemistry, v. 66, no. 1-2, p. 145-158, https://doi.org/10.1023/B:BIOG.0000006125.10467.75.","startPage":"145","endPage":"158","numberOfPages":"14","costCenters":[],"links":[{"id":207791,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1023/B:BIOG.0000006125.10467.75"},{"id":233005,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb145e4b08c986b3252a2","contributors":{"authors":[{"text":"Bokuniewicz, H.","contributorId":68928,"corporation":false,"usgs":true,"family":"Bokuniewicz","given":"H.","email":"","affiliations":[],"preferred":false,"id":403142,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Buddemeier, R.","contributorId":84543,"corporation":false,"usgs":true,"family":"Buddemeier","given":"R.","affiliations":[],"preferred":false,"id":403143,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maxwell, B.","contributorId":56615,"corporation":false,"usgs":true,"family":"Maxwell","given":"B.","email":"","affiliations":[],"preferred":false,"id":403141,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, C.","contributorId":96429,"corporation":false,"usgs":true,"family":"Smith","given":"C.","affiliations":[],"preferred":false,"id":403144,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70024870,"text":"70024870 - 2003 - The fate of wastewater-derived nitrate in the subsurface of the Florida Keys: Key Colony Beach, Florida","interactions":[],"lastModifiedDate":"2018-11-16T09:07:03","indexId":"70024870","displayToPublicDate":"2003-01-01T00:00:00","publicationYear":"2003","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":"The fate of wastewater-derived nitrate in the subsurface of the Florida Keys: Key Colony Beach, Florida","docAbstract":"Shallow injection is the predominant mode of wastewater disposal for most tourist-oriented facilities and some residential communities in the US Florida Keys National Marine Sanctuary. Concern has been expressed that wastewater nutrients may be escaping from the saline groundwater system into canals and surrounding coastal waters and perhaps to the reef tract 10 km offshore, promoting unwanted algal growth and degradation of water quality. We performed a field study of the fate of wastewater-derived nitrate in the subsurface of a Florida Keys residential community (Key Colony Beach, FL) that uses this disposal method, analyzing samples from 21 monitoring wells and two canal sites. The results indicate that wastewater injection at 18–27 m depth into saline groundwater creates a large buoyant plume that flows quickly (within days) upward to a confining layer 6 m below the surface, and then in a fast flow path toward a canal 200 m to the east within a period of weeks to months. Low-salinity groundwaters along the fast flow path have nitrate concentrations that are not significantly reduced from that of the injected wastewaters (ranging from 400 to 600 μmol kg−1). Portions of the low-salinity plume off the main axis of flow have relatively long residence times (>2 months) and have had their nitrate concentrations strongly reduced by a combination of mixing and denitrification. These waters have dissolved N2 concentrations up to 1.6 times air-saturation values with δ15 N[N2]=0.5-5‰, δ15N[NO3-]=16-26‰, and calculated isotope fractionation factors of about −12±4‰, consistent with denitrification as the predominant nitrate reduction reaction. Estimated rates of denitrification of wastewater in the aquifer are of the order of 4 μmol kg-1 N day-1 or 0.008 day-1. The data indicate that denitrification reduces the nitrate load of the injected wastewater substantially, but not completely, before it discharges to nearby canals.
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","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Erosion and sediment transport measurement: Technological and methodological advances: International Association for Hydrological Science Publication 283","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"International Association for Hydrological Science","usgsCitation":"Schoellhamer, D., and Wright, S., 2003, Continuous monitoring of suspended sediment discharge in rivers by use of optical backscatterance sensors, chap. of Erosion and sediment transport measurement: Technological and methodological advances: International Association for Hydrological Science Publication 283, p. 28-36.","productDescription":"9 p.","startPage":"28","endPage":"36","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":325716,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5799db40e4b0589fa1c7e78d","contributors":{"authors":[{"text":"Schoellhamer, D. 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These measurements and associated data were provided by a collection of instruments that included two 915 MHz wind profilers, two radio acoustic sounding systems, and two eddy correlation devices. The data from these devices were available through the Atmospheric Boundary Layer Experiment (ABLE) database operated by Argonne National Laboratory. A signal processing procedure outlined by Angevine et al. was adapted and further built upon to derive vertical velocity variance, w_pm???2, from 915 MHz wind profiler measurements in the mixed layer. The proposed procedure consisted of the application of a height-dependent signal-to-noise ratio (SNR) filter, removal of outliers plus and minus two standard deviations about the mean on the spectral width squared, and removal of the effects of beam broadening and vertical shearing of horizontal winds. The scatter associated with w_pm???2 was mainly affected by the choice of SNR filter cutoff values. 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B. selenitireducens was also able to reduce selenite [Se(IV)] through Se(0) to Se(-II). Reduction of Se(0) by B. selenitireducens was more rapid in cells grown on colloidal sulfur [S(0)] or Se(IV) as their electron acceptor than for cell lines grown on fumarate. In contrast, three cultures of selenate-respiring bacteria, Sulfurospirillum barnesii, B. arsenicoselenatis, and Selenihalanaerobacter shriftii either were unable to reduce Se(0) to Se(-II) or had only a very limited capacity to achieve this reduction. Biological reduction of Se(0) to Se(-II) was observed during incubation of estuarine sediment slurries, while no such activity was noted in formalin-killed controls. The majority of the Se(-II) produced was found in the sediments as a solid precipitate of FeSe, rather than in solution as HSe−. 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","language":"English","publisher":"Taylor & Francis","doi":"10.1080/713851163","issn":"01490451","usgsCitation":"Herbel, M., Blum, J., Oremland, R., and Borglin, S., 2003, Reduction of elemental selenium to selenide: Experiments with anoxic sediments and bacteria that respire Se-oxyanions: Geomicrobiology Journal, v. 20, no. 6, p. 587-602, https://doi.org/10.1080/713851163.","productDescription":"16 p.","startPage":"587","endPage":"602","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":233259,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a3dbe4b0e8fec6cdb9de","contributors":{"authors":[{"text":"Herbel, M.J.","contributorId":57232,"corporation":false,"usgs":true,"family":"Herbel","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":403331,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blum, J.S.","contributorId":105070,"corporation":false,"usgs":true,"family":"Blum","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":403334,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Oremland, R.S.","contributorId":97512,"corporation":false,"usgs":true,"family":"Oremland","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":403333,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Borglin, S.E.","contributorId":69334,"corporation":false,"usgs":true,"family":"Borglin","given":"S.E.","affiliations":[],"preferred":false,"id":403332,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}