{"pageNumber":"255","pageRowStart":"6350","pageSize":"25","recordCount":16446,"records":[{"id":70031701,"text":"70031701 - 2007 - Near infrared spectroscopic examination of charred pine wood, bark, cellulose and lignin: Implications for the quantitative determination of charcoal in soils","interactions":[],"lastModifiedDate":"2018-10-17T08:11:56","indexId":"70031701","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2398,"text":"Journal of Near Infrared Spectroscopy","active":true,"publicationSubtype":{"id":10}},"title":"Near infrared spectroscopic examination of charred pine wood, bark, cellulose and lignin: Implications for the quantitative determination of charcoal in soils","docAbstract":"

The objective of this research was to investigate the effect of charring on near infrared spectra of materials likely to be present in forest fires in order to determine the feasibility of determining charred carbon in soils. Four materials (cellulose, lignin, pine bark and pine wood) and char from these materials created by charring for various durations (1 to 168 h) and at various temperatures (200 to 450??C) were studied. Near infrared spectra and measures of acidity (total acids, carboxylic acids, lactones and phenols as determined by titration) were available for 56 different samples (Not all samples charred at all temperatures/durations). Results showed spectral changes that varied with the material, temperature and duration of charring. Examination of spectra and correlation plots indicated that changes in the constituents of the materials in question, such as loss of OH groups in carbohydrates, rather than direct determination of typical products produced by charring, such as carboxylic acids, lactones and phenols, were the basis for the spectral changes. Finally, while the spectral changes resulting from charring appeared to be relatively unique to each material, PLS calibrations for total acids, carboxylic acids, lactones and phenols were successfully created (with R2 of 0.991, 0.943, 0.931 and 0.944, respectively) indicating that there is a sufficient commonality in the changes to develop calibrations without the need for unique calibrations for each specific set of charring conditions (i.e. material, temperature and time of heating).

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Near Infrared Spectroscopy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1255/jnirs.742","issn":"09670335","usgsCitation":"Reeves, J.B., McCarty, G.W., Rutherford, D.W., and Wershaw, R.L., 2007, Near infrared spectroscopic examination of charred pine wood, bark, cellulose and lignin: Implications for the quantitative determination of charcoal in soils: Journal of Near Infrared Spectroscopy, v. 15, no. 5, p. 307-315, https://doi.org/10.1255/jnirs.742.","productDescription":"9 p.","startPage":"307","endPage":"315","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240081,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212578,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1255/jnirs.742"}],"volume":"15","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-10-01","publicationStatus":"PW","scienceBaseUri":"505a63d2e4b0c8380cd726fe","contributors":{"authors":[{"text":"Reeves, James B. III","contributorId":40693,"corporation":false,"usgs":true,"family":"Reeves","given":"James","suffix":"III","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":432750,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCarty, Gregory W.","contributorId":192367,"corporation":false,"usgs":false,"family":"McCarty","given":"Gregory","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":432748,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rutherford, David W. dwruther@usgs.gov","contributorId":1325,"corporation":false,"usgs":true,"family":"Rutherford","given":"David","email":"dwruther@usgs.gov","middleInitial":"W.","affiliations":[],"preferred":true,"id":432747,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wershaw, Robert L. rwershaw@usgs.gov","contributorId":4856,"corporation":false,"usgs":true,"family":"Wershaw","given":"Robert","email":"rwershaw@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":432749,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031648,"text":"70031648 - 2007 - A ~25 ka Indian Ocean monsoon variability record from the Andaman Sea","interactions":[],"lastModifiedDate":"2015-04-06T09:33:14","indexId":"70031648","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"A ~25 ka Indian Ocean monsoon variability record from the Andaman Sea","docAbstract":"

Recent paleoclimatic work on terrestrial and marine deposits from Asia and the Indian Ocean has indicated abrupt changes in the strength of the Asian monsoon during the last deglaciation. Comparison of marine paleoclimate records that track salinity changes from Asian rivers can help evaluate the coherence of the Indian Ocean monsoon (IOM) with the larger Asian monsoon. Here we present paired Mg/Ca and δ18O data on the planktic foraminifer Globigerinoides ruber (white) from Andaman Sea core RC12-344 that provide records of sea-surface temperature (SST) and δ18O of seawater (δ18Osw) over the past 25,000 years (ka) before present (BP). Age control is based on nine accelerator mass spectrometry (AMS) dates on mixed planktic foraminifera. Mg/Ca-SST data indicate that SST was ∼3 °C cooler during the last glacial maximum (LGM) than the late Holocene. Andaman Sea δ18Osw exhibited higher than present values during the Lateglacial interval ca 19–15 ka BP and briefly during the Younger Dryas ca 12 ka BP. Lower than present δ18Osw values during the BØlling/AllerØd ca 14.5–12.6 ka BP and during the early Holocene ca 10.8–5.5 ka BP are interpreted to indicate lower salinity, reflect some combination of decreased evaporation–precipitation (E–P) over the Andaman Sea and increased Irrawaddy River outflow. Our results are consistent with the suggestion that IOM intensity was stronger than present during the BØlling/AllerØd and early Holocene, and weaker during the late glaciation, Younger Dryas, and the late Holocene. These findings support the hypothesis that rapid climate change during the last deglaciation and Holocene included substantial hydrologic changes in the IOM system that were coherent with the larger Asian monsoon.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.quascirev.2007.07.002","issn":"02773791","usgsCitation":"Rashid, I., Flower, B., Poore, R., and Quinn, T.M., 2007, A ~25 ka Indian Ocean monsoon variability record from the Andaman Sea: Quaternary Science Reviews, v. 26, no. 19-21, p. 2586-2597, https://doi.org/10.1016/j.quascirev.2007.07.002.","productDescription":"12 p.","startPage":"2586","endPage":"2597","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":239833,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212361,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quascirev.2007.07.002"}],"otherGeospatial":"Andaman Sea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 92.3291015625,\n 5.090944175033399\n ],\n [\n 92.3291015625,\n 17.26672782352052\n ],\n [\n 100.546875,\n 17.26672782352052\n ],\n [\n 100.546875,\n 5.090944175033399\n ],\n [\n 92.3291015625,\n 5.090944175033399\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"26","issue":"19-21","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5523ae2de4b027f0aee3d121","contributors":{"authors":[{"text":"Rashid, I.","contributorId":53600,"corporation":false,"usgs":false,"family":"Rashid","given":"I.","email":"","affiliations":[],"preferred":false,"id":432500,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flower, B.P.","contributorId":7301,"corporation":false,"usgs":true,"family":"Flower","given":"B.P.","email":"","affiliations":[],"preferred":false,"id":432498,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Poore, R.Z.","contributorId":35314,"corporation":false,"usgs":true,"family":"Poore","given":"R.Z.","email":"","affiliations":[],"preferred":false,"id":432499,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Quinn, T. M.","contributorId":71320,"corporation":false,"usgs":true,"family":"Quinn","given":"T.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":432501,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031596,"text":"70031596 - 2007 - Assessing the likely value of gravity and drawdown measurements to constrain estimates of hydraulic conductivity and specific yield during unconfined aquifer testing","interactions":[],"lastModifiedDate":"2018-04-03T17:22:22","indexId":"70031596","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":"Assessing the likely value of gravity and drawdown measurements to constrain estimates of hydraulic conductivity and specific yield during unconfined aquifer testing","docAbstract":"

Pumping of an unconfined aquifer can cause local desaturation detectable with high‐resolution gravimetry. A previous study showed that signal‐to‐noise ratios could be predicted for gravity measurements based on a hydrologic model. We show that although changes should be detectable with gravimeters, estimations of hydraulic conductivity and specific yield based on gravity data alone are likely to be unacceptably inaccurate and imprecise. In contrast, a transect of low‐quality drawdown data alone resulted in accurate estimates of hydraulic conductivity and inaccurate and imprecise estimates of specific yield. Combined use of drawdown and gravity data, or use of high‐quality drawdown data alone, resulted in unbiased and precise estimates of both parameters. This study is an example of the value of a staged assessment regarding the likely significance of a new measurement method or monitoring scenario before collecting field data.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR005678","usgsCitation":"Blainey, J.B., Ferré, T., and Cordova, J., 2007, Assessing the likely value of gravity and drawdown measurements to constrain estimates of hydraulic conductivity and specific yield during unconfined aquifer testing: Water Resources Research, v. 43, no. 12, Article W12408; 9 p., https://doi.org/10.1029/2006WR005678.","productDescription":"Article W12408; 9 p.","costCenters":[],"links":[{"id":240111,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-12-20","publicationStatus":"PW","scienceBaseUri":"5059edece4b0c8380cd49aea","contributors":{"authors":[{"text":"Blainey, Joan B.","contributorId":54284,"corporation":false,"usgs":true,"family":"Blainey","given":"Joan","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":432261,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ferré, Ty P.A.","contributorId":35647,"corporation":false,"usgs":false,"family":"Ferré","given":"Ty P.A.","affiliations":[],"preferred":false,"id":432260,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cordova, Jeffrey T. jcordova@usgs.gov","contributorId":1845,"corporation":false,"usgs":true,"family":"Cordova","given":"Jeffrey T.","email":"jcordova@usgs.gov","affiliations":[{"id":472,"text":"New Mexico Water Science Center","active":true,"usgs":true}],"preferred":false,"id":432259,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031594,"text":"70031594 - 2007 - Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California","interactions":[],"lastModifiedDate":"2023-07-05T12:17:18.464508","indexId":"70031594","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3746,"text":"Western North American Naturalist","onlineIssn":"1944-8341","printIssn":"1527-0904","active":true,"publicationSubtype":{"id":10}},"title":"Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California","docAbstract":"

Corbicula fluminea is well known as an invasive filter-feeding freshwater bivalve with a variety of effects on ecosystem processes. However, C. fluminea has been relatively unstudied in the rivers of the western United States. In June 2003, we sampled C. fluminea at 16 sites in the San Joaquin River watershed of California, which was invaded by C. fluminea in the 1940s. Corbicula fluminea was common in 2 tributaries to the San Joaquin River, reaching densities of 200 clams · m−2, but was rare in the San Joaquin River. Biomass followed a similar pattern. Clams of the same age were shorter in the San Joaquin River than in the tributaries. Distribution of clams was different in the 2 tributaries, but the causes of the difference are unknown. The low density and biomass of clams in the San Joaquin River was likely due to stressful habitat or to water quality, because food was abundant. The success of C. fluminea invasions and subsequent effects on trophic processes likely depends on multiple factors. As C. fluminea continues to expand its range around the world, questions regarding invasion success and effects on ecosystems will become important in a wide array of environmental settings.

","language":"English","publisher":"BioOne","doi":"10.3398/1527-0904(2007)67[572:PDBAAS]2.0.CO;2","issn":"15270904","usgsCitation":"Brown, L.R., Thompson, J.K., Higgins, K., and Lucas, L.V., 2007, Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California: Western North American Naturalist, v. 67, no. 4, p. 572-586, https://doi.org/10.3398/1527-0904(2007)67[572:PDBAAS]2.0.CO;2.","productDescription":"15 p.","startPage":"572","endPage":"586","numberOfPages":"15","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":489791,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://scholarsarchive.byu.edu/wnan/vol67/iss4/10","text":"External Repository"},{"id":240074,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Joaquin River Watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.41195439667275,\n 38.415598404027605\n ],\n [\n -122.41195439667275,\n 37.69791363010357\n ],\n [\n -121.25888467133896,\n 37.69791363010357\n ],\n [\n -121.25888467133896,\n 38.415598404027605\n ],\n [\n -122.41195439667275,\n 38.415598404027605\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"67","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d3be4b0c8380cd79e1b","contributors":{"authors":[{"text":"Brown, Larry R. 0000-0001-6702-4531 lrbrown@usgs.gov","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":1717,"corporation":false,"usgs":true,"family":"Brown","given":"Larry","email":"lrbrown@usgs.gov","middleInitial":"R.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":432254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":432255,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Higgins, K.","contributorId":32734,"corporation":false,"usgs":true,"family":"Higgins","given":"K.","affiliations":[],"preferred":false,"id":432252,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lucas, Lisa V.","contributorId":80992,"corporation":false,"usgs":true,"family":"Lucas","given":"Lisa","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":432253,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031543,"text":"70031543 - 2007 - Population demographics of Hiodon tergisus (Mooneye) in the lower Tallapoosa River","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031543","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3444,"text":"Southeastern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Population demographics of Hiodon tergisus (Mooneye) in the lower Tallapoosa River","docAbstract":"We describe age structure, growth, and fecundity of Hiodon tergisus (Mooneye) from the lower Tallapoosa River, AL. Mooneye (N = 49, 214-316 mm total length, 79-284 g) were aged using otoliths, and a von Bertalanffy growth model was derived for the species (L??? = 316, K = 0.285, to = -0.7). Growth rates of Mooneye differed between the Tallapoosa River population and a previously studied population from the northern extent of the species' range (Assiniboine River, MB, Canada). In addition, fecundity of Mooneye from the Tallapoosa River was similar to the northern population, ranging from 5321 to 7432 eggs per female. Because the species is declining throughout its range in Alabama, we recommend that managers use our findings in conservation efforts. Future studies should investigate how hydrology influences the spawning success and early growth and development of Mooneye in regulated systems. More information about this species is needed regarding their early life history, including early growth, survival, and habitat use.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Southeastern Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1656/1528-7092(2007)6[461:PDOHTM]2.0.CO;2","issn":"15287092","usgsCitation":"Katechis, C., Sakaris, P., and Irwin, E., 2007, Population demographics of Hiodon tergisus (Mooneye) in the lower Tallapoosa River: Southeastern Naturalist, v. 6, no. 3, p. 461-470, https://doi.org/10.1656/1528-7092(2007)6[461:PDOHTM]2.0.CO;2.","startPage":"461","endPage":"470","numberOfPages":"10","costCenters":[],"links":[{"id":212269,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1656/1528-7092(2007)6[461:PDOHTM]2.0.CO;2"},{"id":239731,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d36e4b0c8380cd79dfb","contributors":{"authors":[{"text":"Katechis, C.T.","contributorId":67287,"corporation":false,"usgs":true,"family":"Katechis","given":"C.T.","email":"","affiliations":[],"preferred":false,"id":432022,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sakaris, P.C.","contributorId":18954,"corporation":false,"usgs":true,"family":"Sakaris","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":432021,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Irwin, E.R.","contributorId":90269,"corporation":false,"usgs":true,"family":"Irwin","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":432023,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031528,"text":"70031528 - 2007 - Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031528","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2040,"text":"International Journal of Environmental Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","docAbstract":"The Soil and Water Assessment Tool (SWAT) was used to characterize the fate and transport of fluometuron (a herbicide used on cotton) in the Bogue Phalia Basin in northwestern Mississippi, USA. SWAT is a basin-scale watershed model, able to simulate hydrological, chemical, and sediment transport processes. After adjustments to a few parameters (specifically the SURLAG variable, the runoff curve number, Manning's N for overland flow, soil available water capacity, and the base-flow alpha factor) the SWAT model fit the observed streamflow well (the Coefficient of Efficiency and R2 were greater than 60). The results from comparing observed fluometuron concentrations with simulated concentrations were reasonable. The simulated concentrations (which were daily averages) followed the pattern of observed concentrations (instantaneous values) closely, but could be off in magnitude at times. Further calibration might have improved the fit, but given the uncertainties in the input data, it was not clear that any improvement would be due to a better understanding of the input variables. ?? 2007 Taylor & Francis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Environmental Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/03067310701627819","issn":"03067319","usgsCitation":"Coupe, R., 2007, Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water: International Journal of Environmental Analytical Chemistry, v. 87, no. 13-14, p. 883-896, https://doi.org/10.1080/03067310701627819.","startPage":"883","endPage":"896","numberOfPages":"14","costCenters":[],"links":[{"id":212538,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/03067310701627819"},{"id":240035,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"13-14","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbea1e4b08c986b3296cc","contributors":{"authors":[{"text":"Coupe, R.H.","contributorId":84778,"corporation":false,"usgs":true,"family":"Coupe","given":"R.H.","affiliations":[],"preferred":false,"id":431965,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70031526,"text":"70031526 - 2007 - A simple pore water hydrogen diffusion syringe sampler","interactions":[],"lastModifiedDate":"2018-10-16T09:32:52","indexId":"70031526","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":"A simple pore water hydrogen diffusion syringe sampler","docAbstract":"

Molecular hydrogen (H2) is an important intermediate product and electron donor in microbial metabolism. Concentrations of dissolved H 2 are often diagnostic of the predominant terminal electron-accepting processes in ground water systems or aquatic sediments. H2 concentrations are routinely measured in ground water monitoring wells but are rarely measured in saturated aquatic sediments due to a lack of simple and practical sampling methods. This report describes the design and development (including laboratory and field testing) of a simple, syringe-based H 2 sampler in (1) saturated, riparian sediments, (2) surface water bed sediments, and (3) packed intervals of a fractured bedrock borehole that are inaccessible by standard pumped methods.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00362.x","issn":"0017467X","usgsCitation":"Vroblesky, D., Chapelle, F.H., and Bradley, P.M., 2007, A simple pore water hydrogen diffusion syringe sampler: Ground Water, v. 45, no. 6, p. 798-802, https://doi.org/10.1111/j.1745-6584.2007.00362.x.","productDescription":"5 p.","startPage":"798","endPage":"802","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240033,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212536,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00362.x"}],"volume":"45","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-08-09","publicationStatus":"PW","scienceBaseUri":"5059e591e4b0c8380cd46e2b","contributors":{"authors":[{"text":"Vroblesky, Don vroblesk@usgs.gov","contributorId":207411,"corporation":false,"usgs":true,"family":"Vroblesky","given":"Don","email":"vroblesk@usgs.gov","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431958,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":431959,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"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":431957,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031443,"text":"70031443 - 2007 - Composition of pore water in lake sediments, research site \"B\", Osage County, Oklahoma: Implications for lake water quality and benthic organisms","interactions":[],"lastModifiedDate":"2020-09-17T20:39:56.522711","indexId":"70031443","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Composition of pore water in lake sediments, research site \"B\", Osage County, Oklahoma: Implications for lake water quality and benthic organisms","docAbstract":"

Shallow ground water at US Geological Survey research site B in northeastern Oklahoma is contaminated with NaCl-rich brine from past and present oil production operations. Contaminated ground water provides a potential source of salts, metals, and hydrocarbons to sediment and water of adjacent Skiatook Lake. A former brine storage pit 10 m in diameter that is now submerged just offshore from site B provides an additional source of contamination. Cores of the upper 16–40 cm of lake sediment were taken at the submerged brine pit, near an offshore saline seep, and at a location containing relatively uncontaminated lake sediment. Pore waters from each 2-cm interval were separated by centrifugation and analyzed for dissolved anions, cations, and trace elements. High concentrations of dissolved Cl− in pore waters (200–5000 mg/L) provide the most direct evidence of contamination, and contrast sharply with an average value of only about 37 mg/L in Skiatook Lake. Chloride/Br− mass ratios of 220–240 in contaminated pore waters are comparable to values in contaminated well waters collected onshore. Dissolved concentrations of Se, Pb, Cu and Ni in Cl−-rich pore waters exceed current US Environmental Protection Agency criteria for probable toxicity to aquatic life. At the submerged brine storage pit, the increase of Cl− concentration with depth is consistent with diffusion-dominant transport from deeper contaminated sediments. Near the offshore saline seep, pore water Cl− concentrations are consistently high and vary irregularly with depth, indicating probable Cl− transport by layer-directed advective flow. Estimated annual contributions of Cl− to the lake from the brine storage pit (∼20 kg) and the offshore seep (∼9 kg) can be applied to any number of similar sources. Generous estimates of the number of such sources at site B indicate minimal impact on water quality in the local inlet of Skiatook Lake. Similar methodologies can be applied at other sites of NaCl contamination surrounding Skiatook Lake and elsewhere.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.04.013","usgsCitation":"Zielinski, R.A., Herkelrath, W.N., and Otton, J.K., 2007, Composition of pore water in lake sediments, research site \"B\", Osage County, Oklahoma: Implications for lake water quality and benthic organisms: Applied Geochemistry, v. 22, no. 10, p. 2177-2192, https://doi.org/10.1016/j.apgeochem.2007.04.013.","productDescription":"16 p.","startPage":"2177","endPage":"2192","numberOfPages":"16","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239822,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oklahoma","county":"Osage","otherGeospatial":"Skiatook Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -96.29825592041016,\n 36.28967012684225\n ],\n [\n -96.06994628906249,\n 36.28967012684225\n ],\n [\n -96.06994628906249,\n 36.446694448546836\n ],\n [\n -96.29825592041016,\n 36.446694448546836\n ],\n [\n -96.29825592041016,\n 36.28967012684225\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"22","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f92ae4b0c8380cd4d490","contributors":{"authors":[{"text":"Zielinski, Robert A. 0000-0002-4047-5129 rzielinski@usgs.gov","orcid":"https://orcid.org/0000-0002-4047-5129","contributorId":1593,"corporation":false,"usgs":true,"family":"Zielinski","given":"Robert","email":"rzielinski@usgs.gov","middleInitial":"A.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":431517,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Herkelrath, William N. 0000-0002-6149-5524 wnherkel@usgs.gov","orcid":"https://orcid.org/0000-0002-6149-5524","contributorId":2612,"corporation":false,"usgs":true,"family":"Herkelrath","given":"William","email":"wnherkel@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431516,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Otton, James K. jkotton@usgs.gov","contributorId":1170,"corporation":false,"usgs":true,"family":"Otton","given":"James","email":"jkotton@usgs.gov","middleInitial":"K.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":431515,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031439,"text":"70031439 - 2007 - Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA","interactions":[],"lastModifiedDate":"2017-03-03T13:53:19","indexId":"70031439","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA","docAbstract":"

Geochemical tracer data (i.e., 222Rn and four naturally occurring Ra isotopes), electromagnetic (EM) seepage meter results, and high-resolution, stationary electrical resistivity images were used to examine the bi-directional (i.e., submarine groundwater discharge and recharge) exchange of a coastal aquifer with seawater. Our study site for these experiments was Lynch Cove, the terminus of Hood Canal, WA, where fjord-like conditions dramatically limit water column circulation that can lead to recurring summer-time hypoxic events. In such a system a precise nutrient budget may be particularly sensitive to groundwater-derived nutrient loading. Shore-perpendicular time-series subsurface resistivity profiles show clear, decimeter-scale tidal modulation of the coastal aquifer in response to large, regional hydraulic gradients, hydrologically transmissive glacial terrain, and large (4-5 m) tidal amplitudes. A 5-day 222Rn time-series shows a strong inverse covariance between 222Rn activities (0.5−29 dpm L-1) and water level fluctuations, and provides compelling evidence for tidally modulated exchange of groundwater across the sediment/water interface. Mean Rn-derived submarine groundwater discharge (SGD) rates of 85 ± 84 cm d-1 agree closely in the timing and magnitude with EM seepage meter results that showed discharge during low tide and recharge during high tide events. To evaluate the importance of fresh versus saline SGD, Rn-derived SGD rates (as a proxy of total SGD) were compared to excess 226Ra-derived SGD rates (as a proxy for the saline contribution of SGD). The calculated SGD rates, which include a significant (>80%) component of recycled seawater, are used to estimate associated nutrient (NH4+, Si, PO43-, NO3 + NO2, TDN) loads to Lynch Cove. The dissolved inorganic nitrogen (DIN = NH4 + NO2 + NO3) SGD loading estimate of 5.9 × 104 mol d-1 is 1−2 orders of magnitude larger than similar estimates derived from atmospheric deposition and surface water runoff, respectively.

","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070881a","issn":"0013936X","usgsCitation":"Swarzenski, P., Simonds, F., Paulson, A., Kruse, S., and Reich, C., 2007, Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA: Environmental Science & Technology, v. 41, no. 20, p. 7022-7029, https://doi.org/10.1021/es070881a.","productDescription":"8 p.","startPage":"7022","endPage":"7029","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":239757,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Hood Canal, Lynch Cove","volume":"41","issue":"20","noUsgsAuthors":false,"publicationDate":"2007-09-19","publicationStatus":"PW","scienceBaseUri":"505a15d0e4b0c8380cd54f58","contributors":{"authors":[{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":431505,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simonds, F. W.","contributorId":54616,"corporation":false,"usgs":true,"family":"Simonds","given":"F. W.","affiliations":[],"preferred":false,"id":431508,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paulson, A.J. apaulson@usgs.gov","contributorId":89617,"corporation":false,"usgs":true,"family":"Paulson","given":"A.J.","email":"apaulson@usgs.gov","affiliations":[],"preferred":false,"id":431509,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kruse, S.","contributorId":33103,"corporation":false,"usgs":true,"family":"Kruse","given":"S.","email":"","affiliations":[],"preferred":false,"id":431506,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reich, C.","contributorId":41787,"corporation":false,"usgs":true,"family":"Reich","given":"C.","email":"","affiliations":[],"preferred":false,"id":431507,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031412,"text":"70031412 - 2007 - Ammonia-oxidizing bacterial community composition in estuarine and oceanic environments assessed using a functional gene microarray","interactions":[],"lastModifiedDate":"2018-10-11T19:10:15","indexId":"70031412","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1548,"text":"Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"title":"Ammonia-oxidizing bacterial community composition in estuarine and oceanic environments assessed using a functional gene microarray","docAbstract":"

The relationship between environmental factors and functional gene diversity of ammonia-oxidizing bacteria (AOB) was investigated across a transect from the freshwater portions of the Chesapeake Bay and Choptank River out into the Sargasso Sea. Oligonucleotide probes (70-bp) designed to represent the diversity of ammonia monooxygenase (amoA) genes from Chesapeake Bay clone libraries and cultivated AOB were used to construct a glass slide microarray. Hybridization patterns among the probes in 14 samples along the transect showed clear variations in amoA community composition. Probes representing uncultivated members of the Nitrosospira-like AOB dominated the probe signal, especially in the more marine samples. Of the cultivated species, only Nitrosospira briensis was detected at appreciable levels. Discrimination analysis of hybridization signals detected two guilds. Guild 1 was dominated by the marine Nitrosospira-like probe signal, and Guild 2???s largest contribution was from upper bay (freshwater) sediment probes. Principal components analysis showed that Guild 1 was positively correlated with salinity, temperature and chlorophyll a concentration, while Guild 2 was positively correlated with concentrations of oxygen, dissolved organic carbon, and particulate nitrogen and carbon, suggesting that different amoA sequences represent organisms that occupy different ecological niches within the estuarine/marine environment. The trend from most diversity of AOB in the upper estuary towards dominance of a single type in the polyhaline region of the Bay is consistent with the declining importance of AOB with increasing salinity, and with the idea that AO-Archaea are the more important ammonia oxidizers in the ocean.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Microbiology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1462-2920.2007.01371.x","issn":"14622912","usgsCitation":"Ward, B., Eveillard, D., Kirshtein, J.D., Nelson, J., Voytek, M.A., and Jackson, G.A., 2007, Ammonia-oxidizing bacterial community composition in estuarine and oceanic environments assessed using a functional gene microarray: Environmental Microbiology, v. 9, no. 10, p. 2522-2538, https://doi.org/10.1111/j.1462-2920.2007.01371.x.","productDescription":"17 p.","startPage":"2522","endPage":"2538","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239923,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212435,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1462-2920.2007.01371.x"}],"country":"United States","volume":"9","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-06-27","publicationStatus":"PW","scienceBaseUri":"5059e9bee4b0c8380cd48416","contributors":{"authors":[{"text":"Ward, B.B.","contributorId":7023,"corporation":false,"usgs":true,"family":"Ward","given":"B.B.","email":"","affiliations":[],"preferred":false,"id":431393,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eveillard, D.","contributorId":78549,"corporation":false,"usgs":true,"family":"Eveillard","given":"D.","email":"","affiliations":[],"preferred":false,"id":431398,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kirshtein, Julie D.","contributorId":26033,"corporation":false,"usgs":true,"family":"Kirshtein","given":"Julie","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":431394,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nelson, J.D.","contributorId":58101,"corporation":false,"usgs":true,"family":"Nelson","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":431396,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Voytek, Mary A.","contributorId":91943,"corporation":false,"usgs":true,"family":"Voytek","given":"Mary","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":431395,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jackson, G. A.","contributorId":73138,"corporation":false,"usgs":true,"family":"Jackson","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":431397,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031407,"text":"70031407 - 2007 - Ordination of breeding birds in relation to environmental gradients in three southeastern United States floodplain forests","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031407","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":"Ordination of breeding birds in relation to environmental gradients in three southeastern United States floodplain forests","docAbstract":"We used an ordination approach to identify factors important to the organization of breeding bird communities in three floodplains: Cache River, Arkansas (AR), Iatt Creek, Louisiana (LA), and the Coosawhatchie River, South Carolina (SC), USA. We used 5-min point counts to sample birds in each study area each spring from 1995 to 1998, and measured ground-surface elevations and a suite of other habitat variables to investigate bird distributions and community characteristics in relation to important environmental gradients. In both AR and SC, the average number of Neotropical migrant species detected was lowest in semipermanently flooded Nyssa aquatica Linnaeus habitats and greatest in the highest elevation floodplain zone. Melanerpes carolinus Linnaeus, Protonotaria citrea Boddaert, Quiscalus quiscula Linnaeus, and other species were more abundant in N. aquatica habitats, whereas Wilsonia citrina Boddaert, Oporornis formosus Wilson, Vireo griseus Boddaert, and others were more abundant in drier floodplain zones. In LA, there were no significant differences in community metrics or bird species abundances among forest types. Canonical correspondence analyses revealed that structural development of understory vegetation was the most important factor affecting bird distributions in all three study areas; however, potential causes of these structural gradients differed. In AR and SC, differences in habitat structure were related to the hydrologic gradient, as indexed by ground-surface elevation. In LA, structural variations were related mainly to the frequency of canopy gaps. Thus, bird communities in all three areas appeared to be organized primarily in response to repeated localized disturbance. Our results suggest that regular disturbance due to flooding plays an important role in structuring breeding bird communities in floodplains subject to prolonged inundation, whereas other agents of disturbance (e.g., canopy gaps) may be more important in headwater systems subject to only short-duration flooding. Management for avian community integrity in these systems should strive to maintain forest zonation and natural disturbance regimes. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands Ecology and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11273-007-9040-z","issn":"09234861","usgsCitation":"Wakeley, J., Guilfoyle, M., Antrobus, T.J., Fischer, R., Barrow, W., and Hamel, P., 2007, Ordination of breeding birds in relation to environmental gradients in three southeastern United States floodplain forests: Wetlands Ecology and Management, v. 15, no. 5, p. 417-439, https://doi.org/10.1007/s11273-007-9040-z.","startPage":"417","endPage":"439","numberOfPages":"23","costCenters":[],"links":[{"id":212349,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11273-007-9040-z"},{"id":239820,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-05-22","publicationStatus":"PW","scienceBaseUri":"505a6f44e4b0c8380cd759f8","contributors":{"authors":[{"text":"Wakeley, J.S.","contributorId":103996,"corporation":false,"usgs":true,"family":"Wakeley","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":431375,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Guilfoyle, M.P.","contributorId":59145,"corporation":false,"usgs":true,"family":"Guilfoyle","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":431372,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Antrobus, T. J.","contributorId":63117,"corporation":false,"usgs":true,"family":"Antrobus","given":"T.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431373,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fischer, R.A.","contributorId":21763,"corporation":false,"usgs":true,"family":"Fischer","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":431371,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Barrow, W.C. Jr. 0000-0003-4671-2823","orcid":"https://orcid.org/0000-0003-4671-2823","contributorId":11183,"corporation":false,"usgs":true,"family":"Barrow","given":"W.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":431370,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hamel, P.B.","contributorId":88444,"corporation":false,"usgs":true,"family":"Hamel","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":431374,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031406,"text":"70031406 - 2007 - Influence of groundwater pumping on streamflow restoration following upstream dam removal","interactions":[],"lastModifiedDate":"2023-07-21T11:15:19.852527","indexId":"70031406","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Influence of groundwater pumping on streamflow restoration following upstream dam removal","docAbstract":"

We compared streamflow in basins under the combined impacts of an upland dam and groundwater pumping withdrawals, by examining streamflow in the presence and absence of each impact. As a qualitative analysis, inter-watershed streamflow comparisons were performed for several rivers flowing into the east side of the Central Valley, CA. Results suggest that, in the absence of upland dams supporting large reservoirs, some reaches of these rivers might develop ephemeral streamflow in late summer. As a quantitative analysis, we conducted a series of streamflow/groundwater simulations (using MODFLOW-2000 plus the streamflow routing package, SFR1) for a representative hypothetical watershed, with an upland dam and groundwater pumping in the downstream basin, under humid, semi-arid, and arid conditions. As a result of including the impact of groundwater pumping, post-dam removal simulated streamflow was significantly less than natural streamflow. The model predicts extensive ephemeral conditions in the basin during September for both the arid and semi-arid cases. The model predicts continued perennial conditions in the humid case, but spatially weighted, average streamflow of only 71% of natural September streamflow, as a result of continued pumping after dam removal. 

","language":"English","publisher":"Wiley","doi":"10.1002/hyp.6520","issn":"08856087","usgsCitation":"Constantz, J., and Essaid, H.I., 2007, Influence of groundwater pumping on streamflow restoration following upstream dam removal: Hydrological Processes, v. 21, no. 21, p. 2823-2834, https://doi.org/10.1002/hyp.6520.","productDescription":"12 p.","startPage":"2823","endPage":"2834","numberOfPages":"12","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239819,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Central Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.9921875,\n 40.78054143186033\n ],\n [\n -122.431640625,\n 40.78054143186033\n ],\n [\n -123.26660156249999,\n 40.01078714046552\n ],\n [\n -122.16796875,\n 38.34165619279595\n ],\n [\n -120.4541015625,\n 35.567980458012094\n ],\n [\n -118.65234374999999,\n 34.813803317113155\n ],\n [\n -118.47656249999999,\n 36.10237644873644\n ],\n [\n -120.4541015625,\n 38.37611542403604\n ],\n [\n -121.9921875,\n 40.78054143186033\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"21","issue":"21","noUsgsAuthors":false,"publicationDate":"2006-12-21","publicationStatus":"PW","scienceBaseUri":"505a3b3de4b0c8380cd6235e","contributors":{"authors":[{"text":"Constantz, James E. 0000-0002-4062-2096 jconstan@usgs.gov","orcid":"https://orcid.org/0000-0002-4062-2096","contributorId":1962,"corporation":false,"usgs":true,"family":"Constantz","given":"James E.","email":"jconstan@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431368,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Essaid, Hedeff I. 0000-0003-0154-8628 hiessaid@usgs.gov","orcid":"https://orcid.org/0000-0003-0154-8628","contributorId":2284,"corporation":false,"usgs":true,"family":"Essaid","given":"Hedeff","email":"hiessaid@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431369,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031388,"text":"70031388 - 2007 - Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031388","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana","docAbstract":"Cleats and fractures in Pennsylvanian coals in southwestern Indiana were described, statistically analyzed, and subsequently interpreted in terms of their origin, relation to geologic lineaments, and significance for coal permeability and coalbed gas generation and storage. These cleats can be interpreted as the result of superimposed endogenic and exogenic processes. Endogenic processes are associated with coalification (i.e., matrix dehydration and shrinkage), while exogenic processes are mainly associated with larger-scale phenomena, such as tectonic stress. At least two distinct generations of cleats were identified on the basis of field reconnaissance and microscopic study: a first generation of cleats that developed early on during coalification and a second generation that cuts through the previous one at an angle that mimics the orientation of the present-day stress field. The observed parallelism between early-formed cleats and mapped lineaments suggests a well-established tectonic control during early cleat formation. Authigenic minerals filling early cleats represent the vestiges of once open hydrologic regimes. The second generation of cleats is characterized by less prominent features (i.e., smaller apertures) with a much less pronounced occurrence of authigenic mineralization. Our findings suggest a multistage development of cleats that resulted from tectonic stress regimes that changed orientation during coalification and basin evolution. The coals studied are characterized by a macrocleat distribution similar to that of well-developed coalbed methane basins (e.g., Black Warrior Basin, Alabama). Scatter plots and regression analyses of meso- and microcleats reveal a power-law distribution between spacing and cleat aperture. The same distribution was observed for fractures at microscopic scale. Our observations suggest that microcleats enhance permeability by providing additional paths for migration of gas out of the coal matrix, in addition to providing access for methanogenic bacteria. The abundance, distribution, and orientation of cleats control coal fabric and are crucial features in all stages of coalbed gas operations (i.e., exploration and production). Understanding coal fabric is important for coal gas exploration as it may be related to groundwater migration and the occurrence of methanogenic bacteria, prerequisite to biogenic gas accumulations. Likewise, the distribution of cleats in coal also determines pathways for migration and accumulation of thermogenic gas generated during coalification. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2007.02.004","issn":"01665162","usgsCitation":"Solano-Acosta, W., Mastalerz, M., and Schimmelmann, A., 2007, Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana: International Journal of Coal Geology, v. 72, no. 3-4, p. 187-208, https://doi.org/10.1016/j.coal.2007.02.004.","startPage":"187","endPage":"208","numberOfPages":"22","costCenters":[],"links":[{"id":212589,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2007.02.004"},{"id":240095,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f643e4b0c8380cd4c643","contributors":{"authors":[{"text":"Solano-Acosta, W.","contributorId":29212,"corporation":false,"usgs":true,"family":"Solano-Acosta","given":"W.","email":"","affiliations":[],"preferred":false,"id":431296,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mastalerz, Maria","contributorId":78065,"corporation":false,"usgs":true,"family":"Mastalerz","given":"Maria","affiliations":[],"preferred":false,"id":431297,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schimmelmann, A.","contributorId":28348,"corporation":false,"usgs":false,"family":"Schimmelmann","given":"A.","affiliations":[],"preferred":false,"id":431295,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031372,"text":"70031372 - 2007 - Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA)","interactions":[],"lastModifiedDate":"2017-03-15T14:58:12","indexId":"70031372","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA)","docAbstract":"Dissolved organic matter (DOM) concentration and composition in riverine and stream systems are known to vary with hydrological and productivity cycles over the annual and interannual time scales. Rivers are commonly perceived as homogeneous with respect to DOM concentration and composition, particularly under steady flow conditions over short time periods. However, few studies have evaluated the impact of short term variability ( < 1 day) on DOM dynamics. This study examined whether diurnal processes measurably altered DOM concentration and composition in the hypereutrophic San Joaquin River (California) during a relatively quiescent period. We evaluated the efficacy of using optical in situ measurements to reveal changes in DOM which may not be evident from bulk dissolved organic carbon (DOC) measurement alone. The in situ optical measurements described in this study clearly showed for the first time diurnal variations in DOM measurements, which have previously been related to both composition and concentration, even though diurnal changes were not well reflected in bulk DOC concentrations. An apparent asynchronous trend of DOM absorbance and chlorophyll-a in comparison to chromophoric dissolved organic matter (CDOM) fluorescence and spectral slope S290-350 suggests that no one specific CDOM spectrophotometric measurement explains absolutely DOM diurnal variation in this system; the measurement of multiple optical parameters is therefore recommended. The observed diurnal changes in DOM composition, measured by in situ optical instrumentation likely reflect both photochemical and biologically-mediated processes. The results of this study highlight that short-term variability in DOM composition may complicate trends for studies aiming to distinguish different DOM sources in riverine systems and emphasizes the importance of sampling specific study sites to be compared at the same time of day. The utilization of in situ optical technology allows short-term variability in DOM dynamics to be monitored and serves to increase our understanding of its processing and fundamental role in the aquatic environment. Copyright ?? 2007 John Wiley & Sons, Ltd.","language":"English","publisher":"Wiley","doi":"10.1002/hyp.6887","issn":"08856087","usgsCitation":"Spencer, R., Pellerin, B., Bergamaschi, B., Downing, B., Kraus, T., Smart, D., Dahlgren, R., and Hernes, P., 2007, Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA): Hydrological Processes, v. 21, no. 23, p. 3181-3189, https://doi.org/10.1002/hyp.6887.","productDescription":"9 p.","startPage":"3181","endPage":"3189","numberOfPages":"9","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":239818,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212347,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6887"}],"volume":"21","issue":"23","noUsgsAuthors":false,"publicationDate":"2007-09-25","publicationStatus":"PW","scienceBaseUri":"505a0343e4b0c8380cd503bf","contributors":{"authors":[{"text":"Spencer, R.G.M.","contributorId":60361,"corporation":false,"usgs":true,"family":"Spencer","given":"R.G.M.","email":"","affiliations":[],"preferred":false,"id":431237,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pellerin, B.A.","contributorId":81233,"corporation":false,"usgs":true,"family":"Pellerin","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":431239,"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":431235,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Downing, B.D. 0000-0002-2007-5304","orcid":"https://orcid.org/0000-0002-2007-5304","contributorId":71681,"corporation":false,"usgs":true,"family":"Downing","given":"B.D.","affiliations":[],"preferred":false,"id":431238,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kraus, T.E.C. 0000-0002-5187-8644","orcid":"https://orcid.org/0000-0002-5187-8644","contributorId":9758,"corporation":false,"usgs":true,"family":"Kraus","given":"T.E.C.","affiliations":[],"preferred":false,"id":431234,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smart, D.R.","contributorId":99774,"corporation":false,"usgs":true,"family":"Smart","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":431241,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Dahlgren, R.A.","contributorId":28409,"corporation":false,"usgs":true,"family":"Dahlgren","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":431236,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hernes, P.J.","contributorId":89651,"corporation":false,"usgs":true,"family":"Hernes","given":"P.J.","affiliations":[],"preferred":false,"id":431240,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70031337,"text":"70031337 - 2007 - Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis","interactions":[],"lastModifiedDate":"2018-10-17T12:20:35","indexId":"70031337","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis","docAbstract":"

Steep biogeochemical gradients were measured at mixing interfaces in a wetland-aquifer system impacted by landfill leachate in Norman, Oklahoma. The system lies within a reworked alluvial plain and is characterized by layered low hydraulic conductivity wetland sediments interbedded with sandy aquifer material. Using cm-scale passive diffusion samplers, \"peepers\", water samples were collected in a depth profile to span interfaces between surface water and a sequence of deeper sedimentary layers. Geochemical indicators including electron acceptors, low-molecular-weight organic acids, base cations, and NH4+ were analyzed by capillary electrophoresis (CE) and field techniques to maximize the small sample volumes available from the centimeter-scale peepers. Steep concentration gradients of biogeochemical indicators were observed at various interfaces including those created at sedimentary boundaries and boundaries created by heterogeneities in organic C and available electron acceptors. At the sediment-water interface, chemical profiles with depth suggest that SO42 - and Fe reduction dominate driven by inputs of organic C from the wetland and availability of electron acceptors. Deeper in the sediments (not associated with a lithologic boundary), a steep gradient of organic acids (acetate maximum 8.8 mM) and NH4+ (maximum 36 mM) is observed due to a localized source of organic matter coupled with the lack of electron acceptor inputs. These findings highlight the importance of quantifying the redox reactions occurring in small interface zones and assessing their role on biogeochemical cycling at the system scale.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.06.003","issn":"08832927","usgsCitation":"Baez-Cazull, S., McGuire, J., Cozzarelli, I.M., Raymond, A., and Welsh, L., 2007, Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis: Applied Geochemistry, v. 22, no. 12, p. 2664-2683, https://doi.org/10.1016/j.apgeochem.2007.06.003.","productDescription":"20 p.","startPage":"2664","endPage":"2683","numberOfPages":"20","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239783,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212317,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.06.003"}],"country":"United States","state":"Oklahoma","city":"Norman","volume":"22","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f3ede4b0c8380cd4ba31","contributors":{"authors":[{"text":"Baez-Cazull, S.","contributorId":47583,"corporation":false,"usgs":true,"family":"Baez-Cazull","given":"S.","affiliations":[],"preferred":false,"id":431105,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, J.T.","contributorId":17023,"corporation":false,"usgs":true,"family":"McGuire","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":431102,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":431103,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Raymond, A.","contributorId":14118,"corporation":false,"usgs":true,"family":"Raymond","given":"A.","email":"","affiliations":[],"preferred":false,"id":431101,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Welsh, L.","contributorId":30038,"corporation":false,"usgs":true,"family":"Welsh","given":"L.","email":"","affiliations":[],"preferred":false,"id":431104,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031327,"text":"70031327 - 2007 - Sources and transport of algae and nutrients in a Californian river in a semi-arid climate","interactions":[],"lastModifiedDate":"2023-07-07T11:21:19.941508","indexId":"70031327","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1696,"text":"Freshwater Biology","active":true,"publicationSubtype":{"id":10}},"title":"Sources and transport of algae and nutrients in a Californian river in a semi-arid climate","docAbstract":"

1. To elucidate factors contributing to dissolved oxygen (DO) depletion in the Stockton Deep Water Ship Channel in the lower San Joaquin River, spatial and temporal changes in algae and nutrient concentrations were investigated in relation to flow regime under the semiarid climate conditions. 2. Chlorophyll-a (chl-a) concentration and loads indicated that most algal biomass was generated by in-stream growth in the main stem of the river. The addition of algae from tributaries and drains was small (c.15% of total chl-a load), even though high concentrations of chl-a were measured in some source waters. 3. Nitrate and soluble-reactive phosphorus (SRP) were available in excess as a nutrient source for algae. Although nitrate and SRP from upstream tributaries contributed (16.9% of total nitrate load and 10.8% of total SRP load), nutrients derived from agriculture and other sources in the middle and lower river reaches were mostly responsible (20.2% for nitrate and 48.0% for SRP) for maintaining high nitrate and SRP concentrations in the main stem. 4. A reduction in nutrient discharge would attenuate the algal blooms that accelerate DO depletion in the Stockton Deep Water Ship Channel. The N : P ratio, in the main stem suggests that SRP reduction would be a more viable option for algae reduction than nitrogen reduction. 5. Very high algal growth rates in the main stem suggest that reducing the algal seed source in upstream areas would also be an effective strategy.

","largerWorkTitle":"Freshwater Biology","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-2427.2007.01849.x","issn":"00465070","usgsCitation":"Ohte, N., Dahlgren, R., Silva, S.R., Kendall, C., Kratzer, C.R., and Doctor, D.H., 2007, Sources and transport of algae and nutrients in a Californian river in a semi-arid climate: Freshwater Biology, v. 52, no. 12, p. 2476-2493, https://doi.org/10.1111/j.1365-2427.2007.01849.x.","productDescription":"18 p.","startPage":"2476","endPage":"2493","numberOfPages":"18","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":212169,"rank":2,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2427.2007.01849.x"},{"id":239616,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Joaquin River","volume":"52","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-08-08","publicationStatus":"PW","scienceBaseUri":"505b935fe4b08c986b31a470","contributors":{"authors":[{"text":"Ohte, Nobuhito","contributorId":73363,"corporation":false,"usgs":false,"family":"Ohte","given":"Nobuhito","email":"","affiliations":[],"preferred":false,"id":431063,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dahlgren, Randy A.","contributorId":48630,"corporation":false,"usgs":true,"family":"Dahlgren","given":"Randy A.","affiliations":[],"preferred":false,"id":431066,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Silva, Steven R. srsilva@usgs.gov","contributorId":3162,"corporation":false,"usgs":true,"family":"Silva","given":"Steven","email":"srsilva@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431065,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431067,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kratzer, Charles R.","contributorId":30619,"corporation":false,"usgs":true,"family":"Kratzer","given":"Charles","email":"","middleInitial":"R.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":431064,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Doctor, Daniel H. 0000-0002-8338-9722 dhdoctor@usgs.gov","orcid":"https://orcid.org/0000-0002-8338-9722","contributorId":2037,"corporation":false,"usgs":true,"family":"Doctor","given":"Daniel","email":"dhdoctor@usgs.gov","middleInitial":"H.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":431068,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031310,"text":"70031310 - 2007 - Cloud water in windward and leeward mountain forests: The stable isotope signature of orographic cloud water","interactions":[],"lastModifiedDate":"2018-04-03T17:17:35","indexId":"70031310","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":"Cloud water in windward and leeward mountain forests: The stable isotope signature of orographic cloud water","docAbstract":"

Cloud water can be a significant hydrologic input to mountain forests. Because it is a precipitation source that is vulnerable to climate change, it is important to quantify amounts of cloud water input at watershed and regional scales. During this study, cloud water and rain samples were collected monthly for 2 years at sites on windward and leeward East Maui. The difference in isotopic composition between volume‐weighted average cloud water and rain samples was 1.4‰ δ18O and 12‰ δ2H for the windward site and 2.8‰ δ18O and 25‰ δ2H for the leeward site, with the cloud water samples enriched in 18O and 2H relative to the rain samples. A summary of previous literature shows that fog and/or cloud water is enriched in 18O and 2H compared to rain at many locations around the world; this study documents cloud water and rain isotopic composition resulting from weather patterns common to montane environments in the trade wind latitudes. An end‐member isotopic composition for cloud water was identified for each site and was used in an isotopic mixing model to estimate the proportion of precipitation input from orographic clouds. Orographic cloud water input was 37% of the total precipitation at the windward site and 46% at the leeward site. This represents an estimate of water input to the forest that could be altered by changes in cloud base altitude resulting from global climate change or deforestation.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2007WR006011","usgsCitation":"Scholl, M.A., Giambelluca, T., Gingerich, S.B., Nullet, M., and Loope, L., 2007, Cloud water in windward and leeward mountain forests: The stable isotope signature of orographic cloud water: Water Resources Research, v. 43, no. 12, Article W12411; 13 p., https://doi.org/10.1029/2007WR006011.","productDescription":"Article W12411; 13 p.","costCenters":[],"links":[{"id":477236,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007wr006011","text":"Publisher Index Page"},{"id":239918,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-12-20","publicationStatus":"PW","scienceBaseUri":"5059f676e4b0c8380cd4c79a","contributors":{"authors":[{"text":"Scholl, M. A.","contributorId":86365,"corporation":false,"usgs":true,"family":"Scholl","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430993,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Giambelluca, T. W.","contributorId":90115,"corporation":false,"usgs":false,"family":"Giambelluca","given":"T. W.","affiliations":[],"preferred":false,"id":430994,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gingerich, S. B.","contributorId":83958,"corporation":false,"usgs":true,"family":"Gingerich","given":"S.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":430992,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nullet, M.A.","contributorId":72596,"corporation":false,"usgs":true,"family":"Nullet","given":"M.A.","affiliations":[],"preferred":false,"id":430991,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Loope, L.L.","contributorId":43126,"corporation":false,"usgs":true,"family":"Loope","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":430990,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031253,"text":"70031253 - 2007 - Input, flux, and persistence of six select pesticides in San Francisco Bay","interactions":[],"lastModifiedDate":"2018-10-17T09:43:05","indexId":"70031253","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2040,"text":"International Journal of Environmental Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Input, flux, and persistence of six select pesticides in San Francisco Bay","docAbstract":"

Temporal patterns of pesticide inputs to San Francisco Bay were identified and correlated with timing of application and transport mechanism. Fluxes were calculated from measured concentrations and estimated flow. Persistence of the pesticides under typical riverine or estuarine conditions were estimated from laboratory experiments. Simazine was detected most frequently and had the highest flux into the Bay, which could be explained by its continuous use and long half-life. In comparison, diazinon was detected at lower concentrations and had a lower flux which corresponded to its lower use and shorter half-life. The order-of-magnitude lower fluxes of carbofuran and methidathion corresponded to their lower use and expected hydrolysis. Molinate was detected at the highest concentration but its flux was lower than expected, considering its very high use and persistence in the laboratory experiments. Additional loss of molinate is likely to occur from volatilization and photodegradation on the rice fields. Although thiobencarb had the second highest use, it had the lowest flux of the six pesticides, which can be attributed to its loss via hydrolysis, photodegradation, volatilization, and sorption to sediments. Fluxes into San Francisco Bay were equal to or greater than those reported for other estuaries, except for the Gulf of Mexico.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Environmental Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/03067310701619014","issn":"03067319","usgsCitation":"Kuivila, K., and Jennings, B., 2007, Input, flux, and persistence of six select pesticides in San Francisco Bay: International Journal of Environmental Analytical Chemistry, v. 87, no. 13-14, p. 897-911, https://doi.org/10.1080/03067310701619014.","productDescription":"15 p.","startPage":"897","endPage":"911","numberOfPages":"15","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":238620,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211345,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/03067310701619014"}],"country":"United States","state":"California","city":"San Francisco","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 -122.64862060546875,\n 37.391981943533544\n ],\n [\n -121.74362182617188,\n 37.391981943533544\n ],\n [\n -121.74362182617188,\n 38.238180119798635\n ],\n [\n -122.64862060546875,\n 38.238180119798635\n ],\n [\n -122.64862060546875,\n 37.391981943533544\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"87","issue":"13-14","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3c10e4b0c8380cd62a40","contributors":{"authors":[{"text":"Kuivila, Kathryn 0000-0001-7940-489X kkuivila@usgs.gov","orcid":"https://orcid.org/0000-0001-7940-489X","contributorId":190790,"corporation":false,"usgs":true,"family":"Kuivila","given":"Kathryn","email":"kkuivila@usgs.gov","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":430746,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jennings, B.E.","contributorId":44050,"corporation":false,"usgs":true,"family":"Jennings","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":430747,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031188,"text":"70031188 - 2007 - Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","interactions":[],"lastModifiedDate":"2018-10-17T08:25:36","indexId":"70031188","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","docAbstract":"

Kohout convection is the name given to the circulation of saline groundwater deep within carbonate platforms, first proposed by F.A. Kohout in the 1960s for south Florida. It is now seen as an Mg pump for dolomitization by seawater. As proposed by Kohout, cold seawater is drawn into the Florida platform from the deep Straits of Florida as part of a geothermally driven circulation in which the seawater then rises in the interior of the platform to mix and exit with the discharging meteoric water of the Floridan aquifer system. Simulation of the asymmetrically emergent Florida platform with the new three-dimensional (3-D), finite-element groundwater flow and transport model SUTRA-MS, which couples salinity- and temperature-dependent density variations, allows analysis of how much of the cyclic flow is due to geothermal heating (free convection) as opposed to mixing with meteoric water discharging to the shoreline (forced convection). Simulation of the system with and without geothermal heating reveals that the inflow of seawater from the Straits of Florida would be similar without the heat flow, but the distribution would differ significantly. The addition of heat flow reduces the asymmetry of the circulation: it decreases seawater inflows on the Atlantic side by 8% and on the Guff of Mexico side by half. The study illustrates the complex interplay of freshwater-saltwater mixing, geothermal heat flow, and projected dolomitization in complicated 3-D settings with asymmetric boundary conditions and realistic horizontal and vertical variations in hydraulic properties.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23374A.1","issn":"00917613","usgsCitation":"Hughes, J., Vacher, H.L., and Sanford, W.E., 2007, Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality: Geology, v. 35, no. 7, p. 663-666, https://doi.org/10.1130/G23374A.1.","productDescription":"4 p.","startPage":"663","endPage":"666","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211521,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23374A.1"}],"country":"United States","state":"Florida","volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb327e4b08c986b325bf4","contributors":{"authors":[{"text":"Hughes, J.D.","contributorId":25539,"corporation":false,"usgs":true,"family":"Hughes","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":430430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vacher, H. Leonard","contributorId":90529,"corporation":false,"usgs":false,"family":"Vacher","given":"H.","email":"","middleInitial":"Leonard","affiliations":[],"preferred":false,"id":430431,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanford, Ward E. 0000-0002-6624-0280 wsanford@usgs.gov","orcid":"https://orcid.org/0000-0002-6624-0280","contributorId":2268,"corporation":false,"usgs":true,"family":"Sanford","given":"Ward","email":"wsanford@usgs.gov","middleInitial":"E.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":430432,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031179,"text":"70031179 - 2007 - Rainfall limit of the N cycle on Earth","interactions":[],"lastModifiedDate":"2023-07-26T11:49:58.222091","indexId":"70031179","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1836,"text":"Global Biogeochemical Cycles","active":true,"publicationSubtype":{"id":10}},"title":"Rainfall limit of the N cycle on Earth","docAbstract":"

In most climates on Earth, biological processes control soil N. In the Atacama Desert of Chile, aridity severely limits biology, and soils accumulate atmospheric NO3−. We examined this apparent transformation of the soil N cycle using a series of ancient Atacama Desert soils (>2 My) that vary in rainfall (21 to <2 mm yr−1). With decreasing rainfall, soil organic C decreases to 0.3 kg C m−2 and biological activity becomes minimal, while soil NO3− and organic N increase to 4 kg N m−2 and 1.4 kg N m−2, respectively. Atmospheric NO3− (Δ17O = 23.0‰) increases from 39% to 80% of total soil NO3− as rainfall decreases. These soils capture the transition from a steady state, biologically mediated soil N cycle to a dominantly abiotic, transient state of slowly accumulating atmospheric N. This transition suggests that oxidized soil N may be present in an even more arid and abiotic environment: Mars.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006GB002838","issn":"08866236","usgsCitation":"Ewing, S.A., Michalski, G., Thiemens, M., Quinn, R., Macalady, J.L., Kohl, S., Wankel, S.D., Kendall, C., McKay, C.P., and Amundson, R., 2007, Rainfall limit of the N cycle on Earth: Global Biogeochemical Cycles, v. 21, no. 3, GB3009, 12 p., https://doi.org/10.1029/2006GB002838.","productDescription":"GB3009, 12 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477068,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gb002838","text":"Publisher Index Page"},{"id":238787,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-08-08","publicationStatus":"PW","scienceBaseUri":"505a9461e4b0c8380cd81396","contributors":{"authors":[{"text":"Ewing, Stephanie A.","contributorId":50065,"corporation":false,"usgs":true,"family":"Ewing","given":"Stephanie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430391,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Michalski, Greg","contributorId":187898,"corporation":false,"usgs":false,"family":"Michalski","given":"Greg","email":"","affiliations":[{"id":28086,"text":"University of California San Diego","active":true,"usgs":false}],"preferred":false,"id":430384,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thiemens, Mark","contributorId":187899,"corporation":false,"usgs":false,"family":"Thiemens","given":"Mark","email":"","affiliations":[{"id":28086,"text":"University of California San Diego","active":true,"usgs":false}],"preferred":false,"id":430387,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Quinn, R.C.","contributorId":30437,"corporation":false,"usgs":true,"family":"Quinn","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":430382,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Macalady, J. L.","contributorId":95600,"corporation":false,"usgs":false,"family":"Macalady","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430389,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kohl, S.","contributorId":68531,"corporation":false,"usgs":true,"family":"Kohl","given":"S.","affiliations":[],"preferred":false,"id":430388,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wankel, Scott D.","contributorId":98076,"corporation":false,"usgs":true,"family":"Wankel","given":"Scott","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":430390,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":430383,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"McKay, Christopher P","contributorId":191268,"corporation":false,"usgs":false,"family":"McKay","given":"Christopher","email":"","middleInitial":"P","affiliations":[{"id":24796,"text":"NASA Ames Research Center","active":true,"usgs":false}],"preferred":false,"id":430385,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Amundson, Ronald","contributorId":59925,"corporation":false,"usgs":true,"family":"Amundson","given":"Ronald","email":"","affiliations":[],"preferred":false,"id":430386,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70031134,"text":"70031134 - 2007 - Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA","interactions":[],"lastModifiedDate":"2018-10-16T10:12:17","indexId":"70031134","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":"Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA","docAbstract":"

Few detailed evaporation studies exist for small lakes or reservoirs in mountainous settings. A detailed evaporation study was conducted at Mirror Lake, a 0.15 km2 lake in New Hampshire, northeastern USA, as part of a long-term investigation of lake hydrology. Evaporation was determined using 14 alternate evaporation methods during six open-water seasons and compared with values from the Bowen-ratio energy-budget (BREB) method, considered the standard. Values from the Priestley-Taylor, deBruin-Keijman, and Penman methods compared most favorably with BREB-determined values. Differences from BREB values averaged 0.19, 0.27, and 0.20 mm d-1, respectively, and results were within 20% of BREB values during more than 90% of the 37 monthly comparison periods. All three methods require measurement of net radiation, air temperature, change in heat stored in the lake, and vapor pressure, making them relatively data intensive. Several of the methods had substantial bias when compared with BREB values and were subsequently modified to eliminate bias. Methods that rely only on measurement of air temperature, or air temperature and solar radiation, were relatively cost-effective options for measuring evaporation at this small New England lake, outperforming some methods that require measurement of a greater number of variables. It is likely that the atmosphere above Mirror Lake was affected by occasional formation of separation eddies on the lee side of nearby high terrain, although those influences do not appear to be significant to measured evaporation from the lake when averaged over monthly periods.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.03.018","issn":"00221694","usgsCitation":"Rosenberry, D.O., Winter, T.C., Buso, D., and Likens, G., 2007, Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA: Journal of Hydrology, v. 340, no. 3-4, p. 149-166, https://doi.org/10.1016/j.jhydrol.2007.03.018.","productDescription":"18 p.","startPage":"149","endPage":"166","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":211430,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.03.018"},{"id":238716,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Hampshire","otherGeospatial":"Mirror Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.27243041992188,\n 43.628620426937886\n ],\n [\n -71.27225875854492,\n 43.63035994642008\n ],\n [\n -71.27157211303711,\n 43.631229687282\n ],\n [\n -71.27037048339842,\n 43.631602429512775\n ],\n [\n -71.26934051513672,\n 43.631602429512775\n ],\n [\n -71.2664222717285,\n 43.63110543935801\n ],\n [\n -71.26453399658203,\n 43.629738695241485\n ],\n [\n -71.26350402832031,\n 43.628620426937886\n ],\n [\n -71.26144409179688,\n 43.628620426937886\n ],\n [\n -71.25904083251953,\n 43.628620426937886\n ],\n [\n -71.2576675415039,\n 43.62638382791399\n ],\n [\n -71.25749588012695,\n 43.62377435720275\n ],\n [\n -71.25646591186523,\n 43.622034647131954\n ],\n [\n -71.25423431396483,\n 43.62079196625865\n ],\n [\n -71.2544059753418,\n 43.618182252818265\n ],\n [\n -71.2576675415039,\n 43.617685151701174\n ],\n [\n -71.25972747802734,\n 43.617436599601476\n ],\n [\n -71.25938415527344,\n 43.61519958447072\n ],\n [\n -71.26144409179688,\n 43.61507530341222\n ],\n [\n -71.26298904418945,\n 43.6159452654277\n ],\n [\n -71.26487731933594,\n 43.61669093713797\n ],\n [\n -71.26676559448242,\n 43.618057977924266\n ],\n [\n -71.26676559448242,\n 43.619673531511516\n ],\n [\n -71.26728057861328,\n 43.62128904169025\n ],\n [\n -71.2679672241211,\n 43.622034647131954\n ],\n [\n -71.26882553100586,\n 43.62265597793652\n ],\n [\n -71.27243041992188,\n 43.62265597793652\n ],\n [\n -71.27500534057617,\n 43.62340156642572\n ],\n [\n -71.2767219543457,\n 43.62377435720275\n ],\n [\n -71.2767219543457,\n 43.62675660019726\n ],\n [\n -71.27552032470703,\n 43.62787490317682\n ],\n [\n -71.27449035644531,\n 43.62799915777916\n ],\n [\n -71.27243041992188,\n 43.628620426937886\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"340","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f83de4b0c8380cd4cf7c","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":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":430188,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Winter, Thomas C.","contributorId":84736,"corporation":false,"usgs":true,"family":"Winter","given":"Thomas","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430186,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buso, D.C.","contributorId":31392,"corporation":false,"usgs":true,"family":"Buso","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":430187,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Likens, G.E.","contributorId":68893,"corporation":false,"usgs":true,"family":"Likens","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":430189,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031085,"text":"70031085 - 2007 - Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach","interactions":[],"lastModifiedDate":"2018-10-17T11:32:08","indexId":"70031085","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach","docAbstract":"

Bromide and resting-cell bacteria tracer tests conducted in a sandy aquifer at the U.S. Geological Survey Cape Cod site in 1987 were reinterpreted using a three-dimensional stochastic approach. Bacteria transport was coupled to colloid filtration theory through functional dependence of local-scale colloid transport parameters upon hydraulic conductivity and seepage velocity in a stochastic advection - dispersion/attachment - detachment model. Geostatistical information on the hydraulic conductivity (K) field that was unavailable at the time of the original test was utilized as input. Using geostatistical parameters, a groundwater flow and particle-tracking model of conservative solute transport was calibrated to the bromide-tracer breakthrough data. An optimization routine was employed over 100 realizations to adjust the mean and variance ofthe natural-logarithm of hydraulic conductivity (InK) field to achieve best fit of a simulated, average bromide breakthrough curve. A stochastic particle-tracking model for the bacteria was run without adjustments to the local-scale colloid transport parameters. Good predictions of mean bacteria breakthrough were achieved using several approaches for modeling components of the system. Simulations incorporating the recent Tufenkji and Elimelech (Environ. Sci. Technol. 2004, 38, 529-536) correlation equation for estimating single collector efficiency were compared to those using the older Rajagopalan and Tien (AIChE J. 1976, 22, 523-533) model. Both appeared to work equally well at predicting mean bacteria breakthrough using a constant mean bacteria diameter for this set of field conditions. Simulations using a distribution of bacterial cell diameters available from original field notes yielded a slight improvement in the model and data agreement compared to simulations using an average bacterial diameter. The stochastic approach based on estimates of local-scale parameters for the bacteria-transport process reasonably captured the mean bacteria transport behavior and calculated an envelope of uncertainty that bracketed the observations in most simulation cases.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Chemical Society","doi":"10.1021/es062693a","issn":"0013936X","usgsCitation":"Maxwell, R.M., Welty, C., and Harvey, R.W., 2007, Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach: Environmental Science & Technology, v. 41, no. 15, p. 5548-5558, https://doi.org/10.1021/es062693a.","productDescription":"11 p.","startPage":"5548","endPage":"5558","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":486982,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://figshare.com/articles/journal_contribution/Revisiting_the_Cape_Cod_Bacteria_Injection_Experiment_Using_a_Stochastic_Modeling_Approach/2993503","text":"External Repository"},{"id":239045,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211703,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es062693a"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape Cod","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.69427490234375,\n 41.509605687197975\n ],\n [\n -70.69427490234375,\n 42.10943017110108\n ],\n [\n -69.90463256835938,\n 42.10943017110108\n ],\n [\n -69.90463256835938,\n 41.509605687197975\n ],\n [\n -70.69427490234375,\n 41.509605687197975\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"41","issue":"15","noUsgsAuthors":false,"publicationDate":"2007-06-30","publicationStatus":"PW","scienceBaseUri":"505aad2de4b0c8380cd86e4e","contributors":{"authors":[{"text":"Maxwell, Reed M.","contributorId":95373,"corporation":false,"usgs":true,"family":"Maxwell","given":"Reed","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":429956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Welty, Claire","contributorId":39416,"corporation":false,"usgs":true,"family":"Welty","given":"Claire","email":"","affiliations":[],"preferred":false,"id":429957,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"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":429955,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031084,"text":"70031084 - 2007 - Water table fluctuations under three riparian land covers, Iowa (USA)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70031084","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Water table fluctuations under three riparian land covers, Iowa (USA)","docAbstract":"Water table depth is known to play an important role in nitrogen cycling in riparian zones, but little detailed monitoring of water table fluctuations has been reported. In this study, results of high-resolution water table monitoring under three common riparian land covers (forest, cool season grass, corn) were analysed to gain a better understanding of the relation of vegetation cover to water table depth. Three riparian wells located at the Neal Smith National Wildlife Refuge in Jasper County, Iowa, were instrumented with data loggers to record hourly water table behaviour from July to December 2004. Water table depth under the forest showed a diurnal pattern of rising and falling water levels, whereas the grass and corn exhibited a stepped pattern of greater drawdown during the day and less drainage at night. Clear daytime and night-time water table signals were related to daily plant water demands and lateral groundwater flow. Using two estimates of specific yield, hourly and daily ET rates were estimated to be higher under the forest cover than the grass and corn, with peak ET rates in July ranging from 5.02 to 6.32 mm day-1 for forest and from 1.81 to 4.13 mm day-1 for corn and grass. Following plant senescence in October, water table declines were associated with lateral flow to Walnut Creek. The results from this study suggest that consideration should be given to monitoring water table behaviour more frequently to capture daily and seasonal patterns related to riparian vegetation type. Copyright ?? 2007 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.6393","issn":"08856087","usgsCitation":"Schilling, K.E., 2007, Water table fluctuations under three riparian land covers, Iowa (USA): Hydrological Processes, v. 21, no. 18, p. 2415-2424, https://doi.org/10.1002/hyp.6393.","startPage":"2415","endPage":"2424","numberOfPages":"10","costCenters":[],"links":[{"id":239010,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211674,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6393"}],"volume":"21","issue":"18","noUsgsAuthors":false,"publicationDate":"2007-01-30","publicationStatus":"PW","scienceBaseUri":"505bcc8ce4b08c986b32dbdc","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":429954,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70031051,"text":"70031051 - 2007 - Climate variability controls on unsaturated water and chemical movement, High Plains aquifer, USA","interactions":[],"lastModifiedDate":"2023-07-28T11:47:45.07131","indexId":"70031051","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3674,"text":"Vadose Zone Journal","active":true,"publicationSubtype":{"id":10}},"title":"Climate variability controls on unsaturated water and chemical movement, High Plains aquifer, USA","docAbstract":"

Responses in the vadose zone and groundwater to interannual, interdecadal, and multidecadal climate variability have important implications for groundwater resource sustainability, yet they are poorly documented and not well understood in most aquifers of the USA. This investigation systematically examines the role of interannual to multidecadal climate variability on groundwater levels, deep infiltration (3–23 m) events, and downward displacement (>1 m) of chloride and nitrate reservoirs in thick (15–50 m) vadose zones across the regionally extensive High Plains aquifer. Such vadose zone responses are unexpected across much of the aquifer given a priori that unsaturated total-potential profiles indicate upward water movement from the water table toward the root zone, mean annual potential evapotranspiration exceeds mean annual precipitation, and millennia-scale evapoconcentration results in substantial vadose zone chloride and nitrate reservoirs. Using singular spectrum analysis (SSA) to reconstruct precipitation and groundwater level time-series components, variability was identified in all time series as partially coincident with known climate cycles, such as the Pacific Decadal Oscillation (PDO) (10–25 yr) and the El Niño/Southern Oscillation (ENSO) (2–6 yr). Using these lag-correlated hydrologic time series, a new method is demonstrated to estimate climate-varying unsaturated water flux. The results suggest the importance of interannual to interdecadal climate variability on water-flux estimation in thick vadose zones and provide better understanding of the climate-induced transients responsible for the observed deep infiltration and chemical-mobilization events. Based on these results, we discuss implications for climate-related sustainability of the High Plains aquifer.

","language":"English","publisher":"ACSESS","doi":"10.2136/vzj2006.0087","issn":"15391663","usgsCitation":"Gurdak, J., Hanson, R.T., McMahon, P., Bruce, B.W., McCray, J., Thyne, G., and Reedy, R., 2007, Climate variability controls on unsaturated water and chemical movement, High Plains aquifer, USA: Vadose Zone Journal, v. 6, no. 3, p. 533-547, https://doi.org/10.2136/vzj2006.0087.","productDescription":"15 p.","startPage":"533","endPage":"547","numberOfPages":"15","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"links":[{"id":239007,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f655e4b0c8380cd4c6cd","contributors":{"authors":[{"text":"Gurdak, J.J.","contributorId":35119,"corporation":false,"usgs":true,"family":"Gurdak","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":429782,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hanson, R. T.","contributorId":91148,"corporation":false,"usgs":true,"family":"Hanson","given":"R.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":429784,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McMahon, P.B. 0000-0001-7452-2379","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":10762,"corporation":false,"usgs":true,"family":"McMahon","given":"P.B.","affiliations":[],"preferred":false,"id":429779,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bruce, B. W.","contributorId":19577,"corporation":false,"usgs":true,"family":"Bruce","given":"B.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":429780,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McCray, J.E.","contributorId":31985,"corporation":false,"usgs":true,"family":"McCray","given":"J.E.","affiliations":[],"preferred":false,"id":429781,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Thyne, G.D.","contributorId":104352,"corporation":false,"usgs":true,"family":"Thyne","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":429785,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Reedy, R.C.","contributorId":80880,"corporation":false,"usgs":true,"family":"Reedy","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":429783,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70031041,"text":"70031041 - 2007 - Distribution of selected halogenated organic compounds among suspended particulate, colloid, and aqueous phases in the Mississippi River and major tributaries","interactions":[],"lastModifiedDate":"2018-10-16T09:00:55","indexId":"70031041","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Distribution of selected halogenated organic compounds among suspended particulate, colloid, and aqueous phases in the Mississippi River and major tributaries","docAbstract":"

Suspended particulate, colloid, and aqueous phases were separated and analyzed to determine spatial variation of specific organic compound transport associated with each phase in a dynamic river system. Sixteen sites along the Mississippi River and its major tributaries were sampled at low-flow conditions to maximize the possibility of equilibrium. Across the solubility range studied, the proportion transported by each phase depended on the compound solubility, with more water-soluble compounds (dacthal, trifluralin) transported predominantly in the aqueous phase and less-water soluble compounds (polychlorinated biphenyls, chlordane-related compounds) transported predominantly in the particulate and colloid phases.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Archives of Environmental Contamination and Toxicology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00244-005-0056-1","issn":"00904341","usgsCitation":"Rostad, C.E., and Daniel, S., 2007, Distribution of selected halogenated organic compounds among suspended particulate, colloid, and aqueous phases in the Mississippi River and major tributaries: Archives of Environmental Contamination and Toxicology, v. 53, no. 2, p. 151-158, https://doi.org/10.1007/s00244-005-0056-1.","productDescription":"8 p.","startPage":"151","endPage":"158","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238810,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211511,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00244-005-0056-1"}],"country":"United States","volume":"53","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-11","publicationStatus":"PW","scienceBaseUri":"505a02fde4b0c8380cd502b9","contributors":{"authors":[{"text":"Rostad, Colleen E. cerostad@usgs.gov","contributorId":833,"corporation":false,"usgs":true,"family":"Rostad","given":"Colleen","email":"cerostad@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":429742,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Daniel, S.R.","contributorId":28379,"corporation":false,"usgs":true,"family":"Daniel","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":429741,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}