{"pageNumber":"2345","pageRowStart":"58600","pageSize":"25","recordCount":184617,"records":[{"id":70032174,"text":"70032174 - 2007 - Denitrification in the shallow ground water of a tile-drained, agricultural watershed","interactions":[],"lastModifiedDate":"2012-03-12T17:21:27","indexId":"70032174","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Denitrification in the shallow ground water of a tile-drained, agricultural watershed","docAbstract":"Nonpoint-source pollution of surface water by N is considered a major cause of hypoxia. Because Corn Belt watersheds have been identified as major sources of N in the Mississippi River basin, the fate and transport of N from midwestern agricultural watersheds have received considerable interest. The fate and transport of N in the shallow ground water of these watersheds still needs additional research. Our purpose was to estimate denitrification in the shallow ground water of a tile-drained, Corn Belt watershed with fine-grained soils. Over a 3-yr period, N was monitored in the surface and ground water of an agricultural watershed in central Illinois. A significant amount of N was transported past the tile drains and into shallow ground water. The ground water nitrate was isotopically heavier than tile drain nitrate, which can be explained by denitrification in the subsurface. Denitrifying bacteria were found at depths to 10 m throughout the watershed. Laboratory and push-pull tests showed that a significant fraction of nitrate could be denitrified rapidly. We estimated that the N denitrified in shallow ground water was equivalent to 0.3 to 6.4% of the applied N or 9 to 27% of N exported via surface water. These estimates varied by water year and peaked in a year of normal precipitation after 2 yr of below average precipitation. Three years of monitoring data indicate that shallow ground water in watersheds with fine-grained soils may be a significant N sink compared with N exported via surface water. ?? ASA, CSSA, SSSA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2006.0096","issn":"00472425","usgsCitation":"Mehnert, E., Hwang, H., Johnson, T., Sanford, R., Beaumont, W., and Holm, T., 2007, Denitrification in the shallow ground water of a tile-drained, agricultural watershed: Journal of Environmental Quality, v. 36, no. 1, p. 80-90, https://doi.org/10.2134/jeq2006.0096.","startPage":"80","endPage":"90","numberOfPages":"11","costCenters":[],"links":[{"id":242800,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215033,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2006.0096"}],"volume":"36","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe9be4b0c8380cd4ee14","contributors":{"authors":[{"text":"Mehnert, E.","contributorId":64830,"corporation":false,"usgs":true,"family":"Mehnert","given":"E.","email":"","affiliations":[],"preferred":false,"id":434868,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hwang, H.-H.","contributorId":6981,"corporation":false,"usgs":true,"family":"Hwang","given":"H.-H.","email":"","affiliations":[],"preferred":false,"id":434865,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnson, T.M.","contributorId":22332,"corporation":false,"usgs":true,"family":"Johnson","given":"T.M.","affiliations":[],"preferred":false,"id":434866,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sanford, R.A.","contributorId":6722,"corporation":false,"usgs":true,"family":"Sanford","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":434864,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Beaumont, W.C.","contributorId":38026,"corporation":false,"usgs":true,"family":"Beaumont","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":434867,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Holm, T.R.","contributorId":98543,"corporation":false,"usgs":true,"family":"Holm","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":434869,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70032214,"text":"70032214 - 2007 - Litterfall production along successional and altitudinal gradients of subtropical monsoon evergreen broadleaved forests in Guangdong, China","interactions":[],"lastModifiedDate":"2017-04-14T13:14:41","indexId":"70032214","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3086,"text":"Plant Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Litterfall production along successional and altitudinal gradients of subtropical monsoon evergreen broadleaved forests in Guangdong, China","docAbstract":"Evaluation of litterfall production is important for understanding nutrient cycling, forest growth, successional pathways, and interactions with environmental variables in forest ecosystems. Litterfall was intensively studied during the period of 1982-2001 in two subtropical monsoon vegetation gradients in the Dinghushan Biosphere Reserve, Guangdong Province, China. The two gradients include: (1) a successional gradient composed of pine forest (PF), mixed pine and broadleaved forest (MF) and monsoon evergreen broadleaved forest (BF), and (2) an altitudinal gradient composed of Baiyunci ravine rain forest (BRF), Qingyunci ravine rain forest (QRF), BF and mountainous evergreen broadleaved forest (MMF). Mean annual litterfall production was 356, 861 and 849 g m-2 for PF, MF and BF of the successional gradient, and 1016, 1061, 849 and 489 g m-2 for BRF, QRF, BF and MMF of the altitudinal gradient, respectively. As expected, mean annual litterfall of the pioneer forest PF was the lowest, but rapidly increased over the observation period while those in other forests were relatively stable, confirming that forest litterfall production is closely related to successional stages and growth patterns. Leaf proportions of total litterfall in PF, MF, BF, BRF, QRF and MMF were 76.4%, 68.4%, 56.8%, 55.7%, 57.6% and 69.2%, respectively, which were consistent with the results from studies in other evergreen broadleaved forests. Our analysis on litterfall monthly distributions indicated that litterfall production was much higher during the period of April to September compared to other months for all studied forest types. Although there were significant impacts of some climate variables (maximum and effective temperatures) on litterfall production in some of the studied forests, the mechanisms of how climate factors (temperature and rainfall) interactively affect litterfall await further study. ?? 2006 Springer Science+Business Media B.V.","language":"English","publisher":"Springer","doi":"10.1007/s11258-006-9149-9","issn":"13850237","usgsCitation":"Zhou, G., Guan, L., Wei, X., Zhang, D., Zhang, Q., Yan, J., Wen, D., Liu, J., Liu, S., Huang, Z., Kong, G., Mo, J., and Yu, Q., 2007, Litterfall production along successional and altitudinal gradients of subtropical monsoon evergreen broadleaved forests in Guangdong, China: Plant Ecology, v. 188, no. 1, p. 77-89, https://doi.org/10.1007/s11258-006-9149-9.","productDescription":"13 p.","startPage":"77","endPage":"89","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":214629,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11258-006-9149-9"},{"id":242371,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"188","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-04-27","publicationStatus":"PW","scienceBaseUri":"505a48afe4b0c8380cd68051","contributors":{"authors":[{"text":"Zhou, G.","contributorId":12604,"corporation":false,"usgs":true,"family":"Zhou","given":"G.","email":"","affiliations":[],"preferred":false,"id":435065,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Guan, L.","contributorId":63132,"corporation":false,"usgs":true,"family":"Guan","given":"L.","email":"","affiliations":[],"preferred":false,"id":435074,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wei, X.","contributorId":50636,"corporation":false,"usgs":true,"family":"Wei","given":"X.","email":"","affiliations":[],"preferred":false,"id":435072,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zhang, Dongxiao","contributorId":26409,"corporation":false,"usgs":true,"family":"Zhang","given":"Dongxiao","email":"","affiliations":[],"preferred":false,"id":435070,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zhang, Q.","contributorId":84163,"corporation":false,"usgs":true,"family":"Zhang","given":"Q.","email":"","affiliations":[],"preferred":false,"id":435076,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yan, J.","contributorId":24480,"corporation":false,"usgs":true,"family":"Yan","given":"J.","email":"","affiliations":[],"preferred":false,"id":435068,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wen, D.","contributorId":45588,"corporation":false,"usgs":true,"family":"Wen","given":"D.","email":"","affiliations":[],"preferred":false,"id":435071,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Liu, J.","contributorId":23672,"corporation":false,"usgs":false,"family":"Liu","given":"J.","affiliations":[],"preferred":false,"id":435067,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Liu, S.","contributorId":93170,"corporation":false,"usgs":true,"family":"Liu","given":"S.","affiliations":[],"preferred":false,"id":435077,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Huang, Z.","contributorId":18238,"corporation":false,"usgs":true,"family":"Huang","given":"Z.","email":"","affiliations":[],"preferred":false,"id":435066,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kong, G.","contributorId":59690,"corporation":false,"usgs":true,"family":"Kong","given":"G.","email":"","affiliations":[],"preferred":false,"id":435073,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mo, J.","contributorId":81299,"corporation":false,"usgs":true,"family":"Mo","given":"J.","email":"","affiliations":[],"preferred":false,"id":435075,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Yu, Q.","contributorId":26163,"corporation":false,"usgs":true,"family":"Yu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":435069,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70031934,"text":"70031934 - 2007 - Anguilliform larvae collected off North Carolina","interactions":[],"lastModifiedDate":"2012-03-12T17:21:26","indexId":"70031934","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2660,"text":"Marine Biology","active":true,"publicationSubtype":{"id":10}},"title":"Anguilliform larvae collected off North Carolina","docAbstract":"The distinctive larval stage of eels (leptocephalus) facilitates dispersal through prolonged life in the open ocean. Leptocephali are abundant and diverse off North Carolina, yet data on distributions and biology are lacking. The water column (from surface to 1,293 m) was sampled in or near the Gulf Stream off Cape Hatteras, Cape Lookout, and Cape Fear, North Carolina during summer through fall of 1999-2005, and leptocephali were collected by neuston net, plankton net, Tucker trawl, and dip net. Additional samples were collected nearly monthly from a transect across southern Onslow Bay, North Carolina (from surface to 91 m) from April 2000 to December 2001 by bongo and neuston nets, Methot frame trawl, and Tucker trawl. Overall, 584 tows were completed, and 224 of these yielded larval eels. The 1,295 eel leptocephali collected (combining all methods and areas) represented at least 63 species (nine families). Thirteen species were not known previously from the area. Dominant families for all areas were Congridae (44% of individuals, 11 species), Ophichthidae (30% of individuals, 27 species), and Muraenidae (22% of individuals, ten species). Nine taxa accounted for 70% of the overall leptocephalus catches (in order of decreasing abundance): Paraconger caudilimbatus (Poey), Gymnothorax ocellatus Agassiz complex, Ariosoma balearicum (Delaroche), Ophichthus gomesii (Castelnau), Callechelys muraena Jordan and Evermann, Letharchus aliculatus McCosker, Rhynchoconger flavus (Goode and Bean), Ophichthus cruentifer (Goode and Bean), Rhynchoconger gracilior (Ginsburg). The top three species represented 52% of the total eel larvae collected. Most leptocephali were collected at night (79%) and at depths > 45 m. Eighty percent of the eels collected in discrete depth Tucker trawls at night ranged from mean depths of 59-353 m. A substantial number (38% of discrete depth sample total) of larval eels were also collected at the surface (neuston net) at night. Daytime leptocephalus distributions were less clear partly due to low catches and lower Tucker trawl sampling effort. While net avoidance may account for some of the low daytime catches, an alternative explanation is that many species of larval eels occur during the day at depths > 350 m. Larvae of 21 taxa of typically shallow water eels were collected at depths > 350 m, but additional discrete depth diel sampling is needed to resolve leptocephalus vertical distributions. The North Carolina adult eel fauna (estuary to at least 2,000 m) consists of 51 species, 41% of which were represented in these collections. Many species of leptocephali collected are not yet known to have juveniles or adults established in the South Atlantic Bight or north of Cape Hatteras. Despite Gulf Stream transport and a prolonged larval stage, many of these eel leptocephali may not contribute to their respective populations. ?? 2006 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00227-006-0388-z","issn":"00253162","usgsCitation":"Ross, S.W., Casazza, T., Quattrini, A., and Sulak, K., 2007, Anguilliform larvae collected off North Carolina: Marine Biology, v. 150, no. 4, p. 681-695, https://doi.org/10.1007/s00227-006-0388-z.","startPage":"681","endPage":"695","numberOfPages":"15","costCenters":[],"links":[{"id":214958,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00227-006-0388-z"},{"id":242720,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"150","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-07-12","publicationStatus":"PW","scienceBaseUri":"5059ebfde4b0c8380cd49001","contributors":{"authors":[{"text":"Ross, Steve W.","contributorId":72543,"corporation":false,"usgs":false,"family":"Ross","given":"Steve","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":433784,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Casazza, T.L.","contributorId":96473,"corporation":false,"usgs":true,"family":"Casazza","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":433786,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Quattrini, A.M.","contributorId":70985,"corporation":false,"usgs":true,"family":"Quattrini","given":"A.M.","affiliations":[],"preferred":false,"id":433783,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sulak, K. J. 0000-0002-4795-9310","orcid":"https://orcid.org/0000-0002-4795-9310","contributorId":76690,"corporation":false,"usgs":true,"family":"Sulak","given":"K. J.","affiliations":[],"preferred":false,"id":433785,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032179,"text":"70032179 - 2007 - Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA","interactions":[],"lastModifiedDate":"2023-10-03T11:25:27.364711","indexId":"70032179","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":"Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA","docAbstract":"<p>Geochemical and isotopic tools were applied at aquifer, transect, and subtransect scales to provide a framework for understanding sources, transport, and fate of dissolved inorganic N in a sandy aquifer near La Pine, Oregon. NO3 is a common contaminant in shallow ground water in this area, whereas high concentrations of NH4-N (up to 39 mg/L) are present in deep ground water. N concentrations, N/Cl ratios, tracer-based apparent ground-water ages, N isotope data, and hydraulic gradients indicate that septic tank effluent is the primary source of NO3. N isotope data, N/Cl and N/C relations, 3H data, and hydraulic considerations point to a natural, sedimentary organic matter source for the high concentrations of NH4, and are inconsistent with an origin as septic tank N. Low recharge rates and flow velocities have largely restricted anthropogenic NO3 to isolated plumes within several meters of the water table. A variety of geochemical and isotopic data indicate that denitrification also affects NO3 gradients in the aquifer. Ground water in the La Pine aquifer evolves from oxic to increasingly reduced conditions. Suboxic conditions are achieved after about 15-30 y of transport below the water table. NO3 is denitrified near the oxic/suboxic boundary. Denitrification in the La Pine aquifer is characterized well at the aquifer scale with a redox boundary approach that inherently captures spatial variability in the distribution of electron donors.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2006.09.013","issn":"00221694","usgsCitation":"Hinkle, S.R., Bohlke, J.K., Duff, J.H., Morgan, D.S., and Weick, R.J., 2007, Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA: Journal of Hydrology, v. 333, no. 2-4, p. 486-503, https://doi.org/10.1016/j.jhydrol.2006.09.013.","productDescription":"18 p.","startPage":"486","endPage":"503","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242337,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","city":"La Pine","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.75,43.5 ], [ -121.75,44 ], [ -121.33333333333333,44 ], [ -121.33333333333333,43.5 ], [ -121.75,43.5 ] ] ] } } ] }","volume":"333","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed25e4b0c8380cd4965e","contributors":{"authors":[{"text":"Hinkle, Stephen R. srhinkle@usgs.gov","contributorId":1171,"corporation":false,"usgs":true,"family":"Hinkle","given":"Stephen","email":"srhinkle@usgs.gov","middleInitial":"R.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":434887,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bohlke, John Karl 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":127841,"corporation":false,"usgs":true,"family":"Bohlke","given":"John","email":"jkbohlke@usgs.gov","middleInitial":"Karl","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":434888,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Duff, John H. jhduff@usgs.gov","contributorId":961,"corporation":false,"usgs":true,"family":"Duff","given":"John","email":"jhduff@usgs.gov","middleInitial":"H.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":434886,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Morgan, David S.","contributorId":73181,"corporation":false,"usgs":true,"family":"Morgan","given":"David","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":434885,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weick, Rodney J.","contributorId":79560,"corporation":false,"usgs":true,"family":"Weick","given":"Rodney","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434889,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032181,"text":"70032181 - 2007 - Paleoecology reconstruction from trapped gases in a fulgurite from the late Pleistocene of the Libyan Desert","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032181","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":"Paleoecology reconstruction from trapped gases in a fulgurite from the late Pleistocene of the Libyan Desert","docAbstract":"When lightning strikes the ground, it heats, melts, and fuses the sand in soils to form glass tubes known as fulgurites. We report here the composition of CO2, CO, and NO contained within the glassy bubbles of a fulgurite from the Libyan Desert. The results show that the fulgurite formed when the ground contained 0.1 wt% organic carbon with a C/N ratio of 10-15 and a ??13C of -13.96???, compositions similar to those found in the present-day semiarid region of the Sahel, where the vegetation is dominated by C4, plants. Thermoluminescence dating indicates that this fulgurite formed ???15 k.y. ago. These results imply that the semiarid Sahel (at 17??N) reached at least to 24??N at this time, and demonstrate that fulgurite gases and luminescence geochronology can be used in quantitative paleoecology. ?? 2007 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23246A.1","issn":"00917613","usgsCitation":"Navarro, G.R., Mahan, S., Singhvi, A., Navarro-Aceves, R., Rajot, J., McKay, C., Coll, P., and Raulin, F., 2007, Paleoecology reconstruction from trapped gases in a fulgurite from the late Pleistocene of the Libyan Desert: Geology, v. 35, no. 2, p. 171-174, https://doi.org/10.1130/G23246A.1.","startPage":"171","endPage":"174","numberOfPages":"4","costCenters":[],"links":[{"id":242369,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214627,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23246A.1"}],"volume":"35","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a73dde4b0c8380cd772be","contributors":{"authors":[{"text":"Navarro, Gonzalez R.","contributorId":55295,"corporation":false,"usgs":true,"family":"Navarro","given":"Gonzalez","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":434901,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mahan, S. A. 0000-0001-5214-7774","orcid":"https://orcid.org/0000-0001-5214-7774","contributorId":94333,"corporation":false,"usgs":true,"family":"Mahan","given":"S. A.","affiliations":[],"preferred":false,"id":434906,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Singhvi, A.K.","contributorId":64435,"corporation":false,"usgs":true,"family":"Singhvi","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":434902,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Navarro-Aceves, R.","contributorId":78207,"corporation":false,"usgs":true,"family":"Navarro-Aceves","given":"R.","email":"","affiliations":[],"preferred":false,"id":434903,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rajot, J.-L.","contributorId":83403,"corporation":false,"usgs":true,"family":"Rajot","given":"J.-L.","email":"","affiliations":[],"preferred":false,"id":434905,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"McKay, C.P.","contributorId":41122,"corporation":false,"usgs":true,"family":"McKay","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":434900,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Coll, P.","contributorId":26176,"corporation":false,"usgs":true,"family":"Coll","given":"P.","email":"","affiliations":[],"preferred":false,"id":434899,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Raulin, F.","contributorId":82566,"corporation":false,"usgs":true,"family":"Raulin","given":"F.","email":"","affiliations":[],"preferred":false,"id":434904,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70031740,"text":"70031740 - 2007 - Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates","interactions":[],"lastModifiedDate":"2017-08-29T14:01:16","indexId":"70031740","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates","docAbstract":"<p>Sedimentary records of naturally occurring and fallout-derived radionuclides are widely used as tools for estimating both the ages of recent sediments and rates of sedimentation and bioturbation. Developing these records to the point of data interpretation requires careful sample collection, processing, analysis and data modeling. In this work, we document a number of potential pitfalls that can impact sediment core records and their interpretation. This paper is not intended as an exhaustive treatment of these potential problems. Rather, the emphasis is on potential problems that are not well documented in the literature, as follows: (1) the mere sampling of sediment cores at a resolution that is too coarse can result in an apparent diffusive mixing of the sedimentary record at rates comparable to diffusive bioturbation rates observed in many locations; (2) <sup>210</sup>Pb profiles in slowly accumulating sediments can easily be misinterpreted to be driven by sedimentation, when in fact bioturbation is the dominant control. Multiple isotopes of different half lives and/or origin may help to distinguish between these two possible interpretations; (3) apparent mixing can occur due simply to numerical artifacts inherent in the finite difference approximations of the advection diffusion equation used to model sedimentation and bioturbation. Model users need to be aware of this potential problem. Solutions to each of these potential pitfalls are offered to ensure the best possible sediment age estimates and/or sedimentation and bioturbation rates can be obtained.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2006.09.006","issn":"02727714","usgsCitation":"Crusius, J., and Kenna, T.C., 2007, Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates: Estuarine, Coastal and Shelf Science, v. 71, no. 3-4, p. 537-544, https://doi.org/10.1016/j.ecss.2006.09.006.","productDescription":"8 p.","startPage":"537","endPage":"544","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477154,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1603","text":"External Repository"},{"id":239642,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a097ee4b0c8380cd51f43","contributors":{"authors":[{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":432925,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kenna, Timothy C.","contributorId":36754,"corporation":false,"usgs":true,"family":"Kenna","given":"Timothy","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":432926,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031771,"text":"70031771 - 2007 - Characterization of post-fire surface cover, soils, and burn severity at the Cerro Grande Fire, New Mexico, using hyperspectral and multispectral remote sensing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031771","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of post-fire surface cover, soils, and burn severity at the Cerro Grande Fire, New Mexico, using hyperspectral and multispectral remote sensing","docAbstract":"Forest fires leave behind a changed ecosystem with a patchwork of surface cover that includes ash, charred organic matter, soils and soil minerals, and dead, damaged, and living vegetation. The distributions of these materials affect post-fire processes of erosion, nutrient cycling, and vegetation regrowth. We analyzed high spatial resolution (2.4??m pixel size) Airborne Visible and Infrared Imaging Spectrometer (AVIRIS) data collected over the Cerro Grande fire, to map post-fire surface cover into 10 classes, including ash, soil minerals, scorched conifer trees, and green vegetation. The Cerro Grande fire occurred near Los Alamos, New Mexico, in May 2000. The AVIRIS data were collected September 3, 2000. The surface cover map revealed complex patterns of ash, iron oxide minerals, and clay minerals in areas of complete combustion. Scorched conifer trees, which retained dry needles heated by the fire but not fully combusted by the flames, were found to cover much of the post-fire landscape. These scorched trees were found in narrow zones at the edges of completely burned areas. A surface cover map was also made using Landsat Enhanced Thematic Mapper plus (ETM+) data, collected September 5, 2000, and a maximum likelihood, supervised classification. When compared to AVIRIS, the Landsat classification grossly overestimated cover by dry conifer and ash classes and severely underestimated soil and green vegetation cover. In a comparison of AVIRIS surface cover to the Burned Area Emergency Rehabilitation (BAER) map of burn severity, the BAER high burn severity areas did not capture the variable patterns of post-fire surface cover by ash, soil, and scorched conifer trees seen in the AVIRIS map. The BAER map, derived from air photos, also did not capture the distribution of scorched trees that were observed in the AVIRIS map. Similarly, the moderate severity class of Landsat-derived burn severity maps generated from the differenced Normalized Burn Ratio (dNBR) calculation had low agreement with the AVIRIS classes of scorched conifer trees. Burn severity and surface cover images were found to contain complementary information, with the dNBR map presenting an image of degree of change caused by fire and the AVIRIS-derived map showing specific surface cover resulting from fire.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing of Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.rse.2006.08.006","issn":"00344257","usgsCitation":"Kokaly, R., Rockwell, B., Haire, S., and King, T.V., 2007, Characterization of post-fire surface cover, soils, and burn severity at the Cerro Grande Fire, New Mexico, using hyperspectral and multispectral remote sensing: Remote Sensing of Environment, v. 106, no. 3, p. 305-325, https://doi.org/10.1016/j.rse.2006.08.006.","startPage":"305","endPage":"325","numberOfPages":"21","costCenters":[],"links":[{"id":239678,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212224,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.08.006"}],"volume":"106","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4d6e4b0c8380cd4bf5a","contributors":{"authors":[{"text":"Kokaly, R.F. 0000-0003-0276-7101","orcid":"https://orcid.org/0000-0003-0276-7101","contributorId":42381,"corporation":false,"usgs":true,"family":"Kokaly","given":"R.F.","affiliations":[],"preferred":false,"id":433047,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rockwell, B.W.","contributorId":73396,"corporation":false,"usgs":true,"family":"Rockwell","given":"B.W.","email":"","affiliations":[],"preferred":false,"id":433048,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haire, S.L.","contributorId":23503,"corporation":false,"usgs":true,"family":"Haire","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":433046,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"King, T. V. V.","contributorId":6192,"corporation":false,"usgs":true,"family":"King","given":"T.","email":"","middleInitial":"V. V.","affiliations":[],"preferred":false,"id":433045,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031739,"text":"70031739 - 2007 - Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA","interactions":[],"lastModifiedDate":"2023-10-03T11:20:41.383437","indexId":"70031739","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 local- to regional-scale estimates of ground-water recharge in Minnesota, USA","docAbstract":"<p><span>Regional ground-water recharge estimates for Minnesota were compared to estimates made on the basis of four local- and basin-scale methods. Three local-scale methods (unsaturated-zone water balance, water-table fluctuations (WTF) using three approaches, and age dating of ground water) yielded point estimates of recharge that represent spatial scales from about 1 to about 1000&nbsp;m</span><sup>2</sup><span>. A fourth method (RORA, a basin-scale analysis of streamflow records using a recession-curve-displacement technique) yielded recharge estimates at a scale of 10&ndash;1000s of km</span><sup>2</sup><span>. The RORA basin-scale recharge estimates were regionalized to estimate recharge for the entire State of Minnesota on the basis of a regional regression recharge (RRR) model that also incorporated soil and climate data. Recharge rates estimated by the RRR model compared favorably to the local and basin-scale recharge estimates. RRR estimates at study locations were about 41% less on average than the unsaturated-zone water-balance estimates, ranged from 44% greater to 12% less than estimates that were based on the three WTF approaches, were about 4% less than the age dating of ground-water estimates, and were about 5% greater than the RORA estimates. Of the methods used in this study, the WTF method is the simplest and easiest to apply. Recharge estimates made on the basis of the UZWB method were inconsistent with the results from the other methods. Recharge estimates using the RRR model could be a good source of input for regional ground-water flow models; RRR model results currently are being applied for this purpose in USGS studies elsewhere.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2006.10.010","issn":"00221694","usgsCitation":"Delin, G., Healy, R.W., Lorenz, D., and Nimmo, J., 2007, Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA: Journal of Hydrology, v. 334, no. 1-2, p. 231-249, https://doi.org/10.1016/j.jhydrol.2006.10.010.","productDescription":"19 p.","startPage":"231","endPage":"249","numberOfPages":"19","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"links":[{"id":239641,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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N.","contributorId":12834,"corporation":false,"usgs":true,"family":"Delin","given":"G. N.","affiliations":[],"preferred":false,"id":432922,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Healy, R. W.","contributorId":89872,"corporation":false,"usgs":true,"family":"Healy","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":432924,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lorenz, D. L.","contributorId":10776,"corporation":false,"usgs":true,"family":"Lorenz","given":"D. L.","affiliations":[],"preferred":false,"id":432921,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nimmo, J. R. 0000-0001-8191-1727","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":58304,"corporation":false,"usgs":true,"family":"Nimmo","given":"J. R.","affiliations":[],"preferred":false,"id":432923,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031042,"text":"70031042 - 2007 - Microbial reduction of structural Fe3+ in nontronite by a thermophilic bacterium and its role in promoting the smectite to illite reaction","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70031042","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Microbial reduction of structural Fe3+ in nontronite by a thermophilic bacterium and its role in promoting the smectite to illite reaction","docAbstract":"The illitization process of Fe-rich smectite (nontronite NAu-2) promoted by microbial reduction of structural Fe3+ was investigated by using a thermophilic metal-reducing bacterium, Thermoanaerobacter ethanolicus, isolated from the deep subsurface. T. ethanolicus was incubated with lactate as the sole electron donor and structural Fe3+ in nontronite as the sole electron acceptor, and anthraquinone-2, 6-disulfonate (AQDS) as an electron shuttle in a growth medium (pH 6.2 and 9.2, 65 ??C) with or without an external supply of Al and K sources. With an external supply of Al and K, the extent of reduction of Fe3+ in NAu-2 was 43.7 and 40.4% at pH 6.2 and 9.2, respectively. X-ray diffraction and scanning and transmission electron microscopy revealed formation of discrete illite at pH 9.2 with external Al and K sources, while mixed layers of illite/smectite or highly charged smectite were detected under other conditions. The morphology of biogenic illite evolved from lath and flake to pseudo-hexagonal shape. An external supply of Al and K under alkaline conditions enhances the smectite-illite reaction during microbial Fe3+ reduction of smectite. Biogenic SiO2 was observed as a result of bioreduction under all conditions. The microbially promoted smectite-illite reaction proceeds via dissolution of smectite and precipitation of illite. Thermophilic iron reducing bacteria have a significant role in promoting the smectite to illite reaction under conditions common in sedimentary basins.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2138/am.2007.2498","issn":"0003004X","usgsCitation":"Zhang, G., Dong, H., Kim, J., and Eberl, D.D., 2007, Microbial reduction of structural Fe3+ in nontronite by a thermophilic bacterium and its role in promoting the smectite to illite reaction: American Mineralogist, v. 92, no. 8-9, p. 1411-1419, https://doi.org/10.2138/am.2007.2498.","startPage":"1411","endPage":"1419","numberOfPages":"9","costCenters":[],"links":[{"id":211538,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2138/am.2007.2498"},{"id":238840,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"8-9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a565ce4b0c8380cd6d531","contributors":{"authors":[{"text":"Zhang, G.","contributorId":12636,"corporation":false,"usgs":true,"family":"Zhang","given":"G.","email":"","affiliations":[],"preferred":false,"id":429744,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dong, H.","contributorId":94086,"corporation":false,"usgs":true,"family":"Dong","given":"H.","email":"","affiliations":[],"preferred":false,"id":429746,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kim, J.","contributorId":9813,"corporation":false,"usgs":true,"family":"Kim","given":"J.","email":"","affiliations":[],"preferred":false,"id":429743,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Eberl, D. D.","contributorId":66282,"corporation":false,"usgs":true,"family":"Eberl","given":"D.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":429745,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031772,"text":"70031772 - 2007 - The stratigraphic utility of the trace fossil Pteridichnites biseriatus in the Upper Devonian of eastern West Virginia and western Virginia, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031772","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3443,"text":"Southeastern Geology","active":true,"publicationSubtype":{"id":10}},"title":"The stratigraphic utility of the trace fossil Pteridichnites biseriatus in the Upper Devonian of eastern West Virginia and western Virginia, USA","docAbstract":"Similar lithologies and lithofacies are present in two Upper Devonian siliciclastic units, the Brallier and Foreknobs formations, in eastern West Virginia and western Virginia, USA. Specimens of an unusual trace fossil, Pteridichnites biseriatus, occur in variable numbers throughout both stratigraphic units. P. biseriatus is present in abundance in the lowermost Brallier and this abundance-zone serves as a local stratigraphic marker for the Brallier. The trace fossil, originally suggested as an indication of polychaete or arthropod locomotion, is herein proposed as the locomotion trace of an unidentified ophiuroid.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Southeastern Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00383678","usgsCitation":"McDowell, R., Avary, K., Matchen, D., and Britton, J., 2007, The stratigraphic utility of the trace fossil Pteridichnites biseriatus in the Upper Devonian of eastern West Virginia and western Virginia, USA: Southeastern Geology, v. 44, no. 4, p. 191-201.","startPage":"191","endPage":"201","numberOfPages":"11","costCenters":[],"links":[{"id":239679,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb085e4b08c986b324ef2","contributors":{"authors":[{"text":"McDowell, R.R.","contributorId":9807,"corporation":false,"usgs":true,"family":"McDowell","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":433049,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Avary, K.L.","contributorId":44351,"corporation":false,"usgs":true,"family":"Avary","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":433051,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Matchen, D.L.","contributorId":44733,"corporation":false,"usgs":true,"family":"Matchen","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":433052,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Britton, J.Q.","contributorId":36755,"corporation":false,"usgs":true,"family":"Britton","given":"J.Q.","email":"","affiliations":[],"preferred":false,"id":433050,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031734,"text":"70031734 - 2007 - USGS: Science to understand and forecast change in coastal ecosystems","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70031734","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3363,"text":"Sea Technology","active":true,"publicationSubtype":{"id":10}},"title":"USGS: Science to understand and forecast change in coastal ecosystems","docAbstract":"The multidisciplinary approach of the US Geological Survey (USGS), a principal science agency of the US Department of the Interior (DOI), to address the complex and cumulative impacts of human activities and natural events on the US coastal ecosystems has been considered remarkable for understanding and forecasting the changes. The USGS helps explain geologic, hydrologic, and biologic systems and their connectivity across landscapes and seascapes along the coastline. The USGS coastal science programs effectively address science and information to other scientists, managers, policy makers, and the public. The USGS provides scientific expertise, capabilities, and services to collaborative federal, regional, and state-led efforts, which are in line with the goals of Ocean Action Plan (OAP) and Ocean Research Priorities Plan (ORPP). The organization is a leader in understanding terrestrial and marine environmental hazards such as earthquakes, tsunamis, floods, and landslides and assessing and forecasting coastal impacts using various specialized visualization techniques.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Sea Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00933651","usgsCitation":"Myers, M., 2007, USGS: Science to understand and forecast change in coastal ecosystems: Sea Technology, v. 48, no. 1, p. 11-12.","startPage":"11","endPage":"12","numberOfPages":"2","costCenters":[],"links":[{"id":240084,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbbf3e4b08c986b328920","contributors":{"authors":[{"text":"Myers, M.","contributorId":24176,"corporation":false,"usgs":true,"family":"Myers","given":"M.","email":"","affiliations":[],"preferred":false,"id":432903,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031564,"text":"70031564 - 2007 - Sequential solvent extraction for the modes of occurrence of selenium in coals of different ranks from the Huaibei Coalfield, China","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031564","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1755,"text":"Geochemical Transactions","active":true,"publicationSubtype":{"id":10}},"title":"Sequential solvent extraction for the modes of occurrence of selenium in coals of different ranks from the Huaibei Coalfield, China","docAbstract":"Forms of selenium in bituminous coal, anthracite, and cokeite (natural coke) from Huaibei Coalfield, Anhui, China, have been determined by sequential solvent extraction. The selenium content in bulk samples is 4.0, 2.4, and 2.0 ??g/g in bituminous coal, anthracite, and cokeite, respectively. The six forms of selenium determined by six-step solvent extraction are water-leachable, ion-exchangeable, organic matter-associated, carbonate-associated, silicate-associated, and sulfide-associated. The predominant forms of selenium in bituminous coal are organic matter-associated (39.0%), sulfide-associated (21.1%), and silicate bound (31.8%); these three forms account for 92% of the total. The organic matter bound-selenium decrease dramatically from bituminous coal (39.0%) to anthracite (11.6%) and to cokeite (0%), indicating that organic matter bound selenium is converted to other forms during metamorphism of the coal, most likely sulfide-form. The sulfide-associated form increased remarkably from bituminous coal (21.1%) to anthracite (50.4%) and cokeite (54.5%), indicating the formation of selenium sulfide, possibly in pyrite during the transformation of bituminous coal to anthracite and cokeite. The silicate-associated selenium in bituminous coal (31.8%) is much higher than that in anthracite (16.4%) and cokeite (15.8%), indicating that silicate-associated selenium is partly converted to sulfide during metamorphism. ?? 2007 Zhang et al; licensee BioMed Central Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochemical Transactions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1186/1467-4866-8-14","issn":"14674866","usgsCitation":"Zhang, Y., Liu, G., Chou, C.L., Wang, L., and Kang, Y., 2007, Sequential solvent extraction for the modes of occurrence of selenium in coals of different ranks from the Huaibei Coalfield, China: Geochemical Transactions, v. 8, https://doi.org/10.1186/1467-4866-8-14.","costCenters":[],"links":[{"id":477106,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/1467-4866-8-14","text":"Publisher Index Page"},{"id":212601,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1186/1467-4866-8-14"},{"id":240109,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","noUsgsAuthors":false,"publicationDate":"2007-12-20","publicationStatus":"PW","scienceBaseUri":"505b8d55e4b08c986b31834c","contributors":{"authors":[{"text":"Zhang, Y.","contributorId":59969,"corporation":false,"usgs":true,"family":"Zhang","given":"Y.","email":"","affiliations":[],"preferred":false,"id":432144,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, Gaisheng","contributorId":15158,"corporation":false,"usgs":true,"family":"Liu","given":"Gaisheng","email":"","affiliations":[],"preferred":false,"id":432141,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chou, C. L.","contributorId":32655,"corporation":false,"usgs":false,"family":"Chou","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":432142,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wang, L.","contributorId":76904,"corporation":false,"usgs":true,"family":"Wang","given":"L.","email":"","affiliations":[],"preferred":false,"id":432145,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kang, Y.","contributorId":54431,"corporation":false,"usgs":true,"family":"Kang","given":"Y.","email":"","affiliations":[],"preferred":false,"id":432143,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031498,"text":"70031498 - 2007 - Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","interactions":[],"lastModifiedDate":"2018-05-02T21:28:45","indexId":"70031498","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":"Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","docAbstract":"Concentrations of chlordane, a banned termiticide and pesticide, were examined in recently collected surficial sediment (10 sites) and sediment cores (4 sites) in Long Island Sound (LIS).The highest chlordane concentrations were observed in western LIS, near highly urbanized areas. Chlordane concentrations did not decrease significantly in the past decade when compared to the data collected in 1996, consistent with the observation of near-constant chlordane levels in blue mussel tissues collected during the same time period. Chlordane concentrations in many of the sites exceeded levels above which harmful effects on sediment-dwelling organisms are expected to frequently occur. Chlordane concentrations in two of the four sediment cores showed a peak below the sediment surface, suggesting reduced chlordane inputs in recent years. The lack of a chlordane concentration maximum below the sediment surface in the other two cores, coupled with the lack of a well-defined <sup>137</sup>Cs peak, indicated significant sediment mixing. Simulations of <sup>137</sup>Cs and <sup>210</sup>Pb profiles in sediment cores with a simple sediment-mixing model were used to constrain both the deposition rate and the bioturbation rate of the sediment. Simulations of the chlordane profiles indicated continued chlordane input to LIS long after chlordane was phased out in the U.S. Continued chlordane input and significant sediment mixing may have contributed to the persistent chlordane concentrations in surficial sediment, which poses long-term threats to benthic organisms in LIS.","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070749a","issn":"0013936X","usgsCitation":"Yang, L., Li, X., Crusius, J., Jans, U., Melcer, M., and Zhang, P., 2007, Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles: Environmental Science & Technology, v. 41, no. 22, p. 7723-7729, https://doi.org/10.1021/es070749a.","productDescription":"7 p.","startPage":"7723","endPage":"7729","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Long Island","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -74.674072265625,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              40.22082997283287\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"41","issue":"22","noUsgsAuthors":false,"publicationDate":"2007-10-16","publicationStatus":"PW","scienceBaseUri":"505a76f4e4b0c8380cd783b0","contributors":{"authors":[{"text":"Yang, L.","contributorId":6200,"corporation":false,"usgs":true,"family":"Yang","given":"L.","affiliations":[],"preferred":false,"id":431799,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Li, X.","contributorId":67635,"corporation":false,"usgs":true,"family":"Li","given":"X.","email":"","affiliations":[],"preferred":false,"id":431803,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":431801,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jans, U.","contributorId":35545,"corporation":false,"usgs":true,"family":"Jans","given":"U.","email":"","affiliations":[],"preferred":false,"id":431800,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Melcer, M.E.","contributorId":57270,"corporation":false,"usgs":true,"family":"Melcer","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":431802,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhang, P.","contributorId":92822,"corporation":false,"usgs":true,"family":"Zhang","given":"P.","email":"","affiliations":[],"preferred":false,"id":431804,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031052,"text":"70031052 - 2007 - A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico","interactions":[],"lastModifiedDate":"2016-10-12T09:48:20","indexId":"70031052","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2860,"text":"New Mexico Geology","active":true,"publicationSubtype":{"id":10}},"title":"A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico","docAbstract":"<p>The upper part of the Dakota Sandstone exposed on the Sevilleta National Wildlife Refuge, northern Socorro County, New Mexico, is a condensed, Upper Cretaceous, marine succession spanning the first five middle Cenomanian ammonite zones of the U.S. Western Interior. Farther north in New Mexico these five ammonite zones occur over a stratigraphic interval more than an order of magnitude thicker. The basal part of this marine sequence was deposited in Seboyeta Bay, an elongate east-west embayment into New Mexico that marked the initial transgression of the western shoreline of the Late Cretaceous seaway into New Mexico. </p><p>The primary mechanism for condensing this section was nearshore, submarine erosion, although nondeposition played a minor role. The ammonite fossils from each zone are generally fragments of internal molds that are corroded on one side, indicating submarine burial, erosion of the prefossilized steinkern, and corrosion on the sea floor. In addition, the base of the condensed succession is marked by a thin bed that contains abundant, white-weathering, spherical to cylindrical phosphate nodules, many of which contain a cylindrical axial cavity of unknown origin. </p><p>The nodules lie on the bedding surface of the highly burrowed, ridge-forming sandstone near the top of the Dakota and occur in the overlying breccia. The breccia consists of rip-up clasts of sandstone and eroded internal molds of the ammonite Conlinoceras tarrantense, the zonal index for the basal middle Cenomanian. The nodules below the breccia imply a time of erosion followed by nondeposition or sediment bypass during which the phosphatization occurred. The breccia implies a time of submarine erosion, probably storm-related. </p><p>Remarkably, this condensed succession and the basal part of the overlying Mancos Shale tongue contain one of the most complete middle Cenomanian ammonite sequences in the U.S. Western Interior. Five of the six ammonite zones that characterize the middle Cenomanian of the Western Interior are found on Sevilleta National Wildlife Refuge. Only representatives of the second oldest zone are missing, although stratigraphically there is room for this zone. Fossils from each zone occur in stratigraphically separated beds; no zone overlaps with or is superimposed on another.</p><p>Maps of the western shoreline of the seaway at the beginning and end of the time represented by the condensed succession show the progression of the Late Cretaceous seaway from embayment to ocean covering most of New Mexico. These maps, combined with the resolving power of the middle Cenomanian biostratigraphic framework, indicate that the southern shoreline of Seboyeta Bay, which was only a few miles south of Sevilleta National Wildlife Refuge, was virtually stationary for most of this time. This ensured that the refuge was under shallow, well-oxygenated, marine waters for much of middle Cenomanian time. It also ensured that deposited sediments would be subjected periodically to erosion by nearshore waves and currents. </p><p>This report marks the first recorded occurrence in New Mexico of the following ammonite species: <i>Acanthoceras muldoonense</i> (zonal index), <i>A. bellense</i> (zonal index), <i>Turrilites (Euturrilites) scheuchzerianus</i>, <i>Cunningtoniceras</i> cf. <i>C. cunningtoni</i>, and <i>Paraconlinoceras leonense</i>. The occurrences of the zonal indices in the Dakota Sandstone on and to the south of the refuge increase not only their geographic distributions, but also the biostratigraphic resolution in the middle Cenomanian of New Mexico.</p>","language":"English","publisher":"New Mexico Bureau of Geology and Mineral Resources","issn":"0196948X","usgsCitation":"Hook, S.C., and Cobban, W., 2007, A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico: New Mexico Geology, v. 29, no. 3, p. 75-96.","productDescription":"22 p.","startPage":"75","endPage":"96","costCenters":[{"id":207,"text":"Core Research Center","active":true,"usgs":true}],"links":[{"id":239008,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":270669,"type":{"id":15,"text":"Index Page"},"url":"https://geoinfo.nmt.edu/publications/periodicals/nmg/backissues/home.cfml?SpecificYear=&FromYear=&ToYear=&Volume=29&Number=3&title=&author=&keywords=&NMcounty=ANY&Submit=Search"}],"country":"United States","state":"New Mexico","county":"Socorro County","otherGeospatial":"Sevilleta National Wildlife Refuge","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -107.0898,34.1882 ], [ -107.0898,34.422 ], [ -106.5139,34.422 ], [ -106.5139,34.1882 ], [ -107.0898,34.1882 ] ] ] } } ] }","volume":"29","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e395e4b0c8380cd460f2","contributors":{"authors":[{"text":"Hook, Stephen C.","contributorId":175265,"corporation":false,"usgs":false,"family":"Hook","given":"Stephen","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":429787,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cobban, William A.","contributorId":99529,"corporation":false,"usgs":true,"family":"Cobban","given":"William A.","affiliations":[],"preferred":false,"id":429786,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031036,"text":"70031036 - 2007 - Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031036","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis","docAbstract":"We evaluated the susceptibility of Rio Grande cutthroat trout (RGCT) Oncorhynchus clarkii virginalis to infection by Myxobolus cerebralis in a laboratory experiment. In the same experiment, rainbow trout (RBT) O. mykiss were similarly exposed to M. cerebralis as a reference of known sensitivity to the parasite. Treatments consisting of six parasite concentrations (0, 50, 100, 250, 500, and 1,000 triactinomyxons [TAMS] per fish) were randomized within a complete block design using RGCT and RBT fry beginning at 60 d posthatch (600 degree-days at 10??C). The laboratory experiment was terminated at 130 d postexposure (1,900 degree-days at 10??C). Diagnostic metrics included clinical signs (behavioral and black tail), survival, myxospore counts, histology, and a swimming performance challenge. Clinical signs of whirling disease were observed within both species at 500 and 1,000 TAMs/fish by 66 d postexposure to the disease. Rio Grande cutthroat trout exhibited significantly lower survival (50% cumulative mortality at 1,000 TAMs/fish) and a significant concentration response compared with RBT (8% cumulative mortality at 1,000 TAMs/fish). Histological scoring of cranial sections using a 0-5 scale of increasing pathogenic effect revealed greater disease severity in RGCT (3.20) than in RBT (2.43) at 100 TAMs/fish but no difference at 1,000 TAMs/fish (4.15 and 4.12, respectively). Swimming performance revealed detectably lower critical swimming speed in both RGCT and RBT in relation to increased parasite concentrations, the RGCT exhibiting detectably lower critical swimming speeds than the RBT at increased parasite concentration. If M. cerebralis were to spread to areas supporting RGCT, population-level effects may occur. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transactions of the American Fisheries Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/T06-251.1","issn":"00028487","usgsCitation":"DuBey, R., Caldwell, C., and Gould, W., 2007, Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis: Transactions of the American Fisheries Society, v. 136, no. 5, p. 1406-1414, https://doi.org/10.1577/T06-251.1.","startPage":"1406","endPage":"1414","numberOfPages":"9","costCenters":[],"links":[{"id":211451,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/T06-251.1"},{"id":238742,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"136","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-01-09","publicationStatus":"PW","scienceBaseUri":"505aa699e4b0c8380cd84f47","contributors":{"authors":[{"text":"DuBey, R.J.","contributorId":95265,"corporation":false,"usgs":true,"family":"DuBey","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":429715,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Caldwell, C.A. 0000-0002-4730-4867","orcid":"https://orcid.org/0000-0002-4730-4867","contributorId":24727,"corporation":false,"usgs":true,"family":"Caldwell","given":"C.A.","affiliations":[],"preferred":false,"id":429714,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gould, W.R.","contributorId":9746,"corporation":false,"usgs":true,"family":"Gould","given":"W.R.","affiliations":[],"preferred":false,"id":429713,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031508,"text":"70031508 - 2007 - Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","interactions":[],"lastModifiedDate":"2017-04-12T15:58:28","indexId":"70031508","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","docAbstract":"<p><span>Urban development in the Las Vegas Valley of Nevada (USA) has expanded rapidly over the past 50 years. The air quality in the valley has suffered owing to increases from anthropogenic emissions of carbon monoxide, ozone and criteria pollutants of particular matter. Air quality observations show that pollutant concentrations have apparent heterogeneous characteristics in the urban area. Quantified urban land use and land cover information derived from satellite remote sensing data indicate an apparent local influence of urban development density on air pollutant distributions. Multi‐year observational data collected by a network of local air monitoring stations specify that ozone maximums develop in the May and June timeframe, whereas minimum concentrations generally occur from November to February. The fine particulate matter maximum occurs in July. Ozone concentrations are highest on the west and northwest sides of the valley. Night‐time ozone reduction contributes to the heterogeneous features of the spatial distribution for average ozone levels in the Las Vegas metropolitan area. Decreased ozone levels associated with increased urban development density suggest that the highest ozone and lowest nitrogen oxides concentrations are associated with medium to low density urban development in Las Vegas.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160701227653","issn":"01431161","usgsCitation":"Xian, G., 2007, Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations: International Journal of Remote Sensing, v. 28, no. 24, p. 5427-5445, https://doi.org/10.1080/01431160701227653.","productDescription":"19 p.","startPage":"5427","endPage":"5445","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239729,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212267,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160701227653"}],"volume":"28","issue":"24","noUsgsAuthors":false,"publicationDate":"2007-12-21","publicationStatus":"PW","scienceBaseUri":"5059eb1ce4b0c8380cd48c19","contributors":{"authors":[{"text":"Xian, G. 0000-0001-5674-2204","orcid":"https://orcid.org/0000-0001-5674-2204","contributorId":65656,"corporation":false,"usgs":true,"family":"Xian","given":"G.","affiliations":[],"preferred":false,"id":431854,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031512,"text":"70031512 - 2007 - Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031512","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes","docAbstract":"During 2005-2006, sera and tissues from raccoons (Procyon lotor), coyotes (Canis latrans), and skunks (Mephitis mephitis) from the state of Wisconsin were tested for Toxoplasma gondii infection. Antibodies to T. gondii were found in 32 of 54 (59.2%) raccoons, 18 of 35 (51.4%) coyotes, and 5 of 7 (71.4%) skunks using the modified agglutination test and a cut-off titer of 1:20. Pooled tissues (brains, hearts, and tongues) from 30 raccoons, 15 coyotes, and 1 skunk were bioassayed for T. gondii infection in mice or cats. Viable T. gondii was isolated from 5 of 30 (16.7%) raccoons, 6 of 15 (40.0%) coyotes, and the skunk. Genetic characterization of the 12 parasite isolates by multilocus PCR-RFLP markers revealed 6 different genotypes including 5 atypical and 1 archetypal II lineages. The results indicate the prevalence of T. gondii in wildlife mammals is high and that these animals may serve as an important reservoir for transmission of T. gondii. ?? American Society of Parasitologists 2007.","largerWorkTitle":"Journal of Parasitology","language":"English","doi":"10.1645/GE-1245.1","issn":"00223395","usgsCitation":"Dubey, J., Sundar, N., Nolden, C., Samuel, M., Velmurugan, G.V., Bandini, L., Kwok, O.C., Bodenstein, B., and Su, C., 2007, Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes, <i>in</i> Journal of Parasitology, v. 93, no. 6, p. 1524-1527, https://doi.org/10.1645/GE-1245.1.","startPage":"1524","endPage":"1527","numberOfPages":"4","costCenters":[],"links":[{"id":212326,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1645/GE-1245.1"},{"id":239793,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4bde4b0c8380cd4bea6","contributors":{"authors":[{"text":"Dubey, J. P.","contributorId":80609,"corporation":false,"usgs":false,"family":"Dubey","given":"J. P.","affiliations":[],"preferred":false,"id":431865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sundar, N.","contributorId":80640,"corporation":false,"usgs":true,"family":"Sundar","given":"N.","email":"","affiliations":[],"preferred":false,"id":431866,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nolden, C.A.","contributorId":9226,"corporation":false,"usgs":true,"family":"Nolden","given":"C.A.","affiliations":[],"preferred":false,"id":431861,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Samuel, M.D.","contributorId":13910,"corporation":false,"usgs":true,"family":"Samuel","given":"M.D.","affiliations":[],"preferred":false,"id":431862,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Velmurugan, G. V.","contributorId":84893,"corporation":false,"usgs":false,"family":"Velmurugan","given":"G.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":431868,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bandini, L.A.","contributorId":73409,"corporation":false,"usgs":true,"family":"Bandini","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":431864,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kwok, O. C. H.","contributorId":83891,"corporation":false,"usgs":false,"family":"Kwok","given":"O.","email":"","middleInitial":"C. H.","affiliations":[],"preferred":false,"id":431867,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bodenstein, B. 0000-0001-7946-0103","orcid":"https://orcid.org/0000-0001-7946-0103","contributorId":6664,"corporation":false,"usgs":true,"family":"Bodenstein","given":"B.","affiliations":[],"preferred":false,"id":431860,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Su, C.","contributorId":18334,"corporation":false,"usgs":false,"family":"Su","given":"C.","email":"","affiliations":[],"preferred":false,"id":431863,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70031706,"text":"70031706 - 2007 - Effects of cryptic mortality and the hidden costs of using length limits in fishery management","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031706","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1652,"text":"Fish and Fisheries","active":true,"publicationSubtype":{"id":10}},"title":"Effects of cryptic mortality and the hidden costs of using length limits in fishery management","docAbstract":"Fishery collapses cause substantial economic and ecological harm, but common management actions often fail to prevent overfishing. Minimum length limits are perhaps the most common fishing regulation used in both commercial and recreational fisheries, but their conservation benefits can be influenced by discard mortality of fish caught and released below the legal length. We constructed a computer model to evaluate how discard mortality could influence the conservation utility of minimum length regulations. We evaluated policy performance across two disparate fish life-history types: short-lived high-productivity (SLHP) and long-lived low-productivity (LLLP) species. For the life-history types, fishing mortality rates and minimum length limits that we examined, length limits alone generally failed to achieve sustainability when discard mortality rate exceeded about 0.2 for SLHP species and 0.05 for LLLP species. At these levels of discard mortality, reductions in overall fishing mortality (e.g. lower fishing effort) were required to prevent recruitment overfishing if fishing mortality was high. Similarly, relatively low discard mortality rates (>0.05) rendered maximum yield unobtainable and caused a substantial shift in the shape of the yield response surfaces. An analysis of fishery efficiency showed that length limits caused the simulated fisheries to be much less efficient, potentially exposing the target species and ecosystem to increased negative effects of the fishing process. Our findings suggest that for overexploited fisheries with moderate-to-high discard mortality rates, reductions in fishing mortality will be required to meet management goals. Resource managers should carefully consider impacts of cryptic mortality sources (e.g. discard mortality) on fishery sustainability, especially in recreational fisheries where release rates are high and effort is increasing in many areas of the world. ?? 2007 Blackwell Publishing Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Fish and Fisheries","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1467-2679.2007.00247.x","issn":"14672960","usgsCitation":"Coggins, L., Catalano, M., Allen, M.S., Pine, W., and Walters, C., 2007, Effects of cryptic mortality and the hidden costs of using length limits in fishery management: Fish and Fisheries, v. 8, no. 3, p. 196-210, https://doi.org/10.1111/j.1467-2679.2007.00247.x.","startPage":"196","endPage":"210","numberOfPages":"15","costCenters":[],"links":[{"id":239674,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212220,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1467-2679.2007.00247.x"}],"volume":"8","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-08-17","publicationStatus":"PW","scienceBaseUri":"505a06c1e4b0c8380cd513d8","contributors":{"authors":[{"text":"Coggins, L.G. Jr.","contributorId":47139,"corporation":false,"usgs":true,"family":"Coggins","given":"L.G.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":432770,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Catalano, M.J.","contributorId":44347,"corporation":false,"usgs":true,"family":"Catalano","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":432769,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Allen, M. S.","contributorId":63001,"corporation":false,"usgs":true,"family":"Allen","given":"M.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":432772,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pine, William E. III","contributorId":56759,"corporation":false,"usgs":true,"family":"Pine","given":"William E.","suffix":"III","affiliations":[],"preferred":false,"id":432771,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Walters, C.J.","contributorId":43971,"corporation":false,"usgs":true,"family":"Walters","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":432768,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031040,"text":"70031040 - 2007 - Prey density and the behavioral flexibility of a marine predator: The common murre (<i>Uria aalge</i>)","interactions":[],"lastModifiedDate":"2018-08-19T20:05:57","indexId":"70031040","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Prey density and the behavioral flexibility of a marine predator: The common murre (<i>Uria aalge</i>)","docAbstract":"<p>Flexible time budgets allow individual animals to buffer the effects of variable food availability by allocating more time to foraging when food density decreases. This trait should be especially important for marine predators that forage on patchy and ephemeral food resources. We examined flexible time allocation by a long-lived marine predator, the Common Murre (Uria aalge), using data collected in a five-year study at three colonies in Alaska (USA) with contrasting environmental conditions. Annual hydroacoustic surveys revealed an order-of-magnitude variation in food density among the 15 colony-years of study. We used data on parental time budgets and local prey density to test predictions from two hypotheses: Hypothesis A, the colony attendance of seabirds varies nonlinearly with food density; and Hypothesis B, flexible time allocation of parent murres buffers chicks against variable food availability. Hypothesis A was supported; colony attendance by murres was positively correlated with food over a limited range of poor-to-moderate food densities, but independent of food over a broader range of higher densities. This is the first empirical evidence for a nonlinear response of a marine predator's time budget to changes in prey density. Predictions from Hypothesis B were largely supported: (1) chick-feeding rates were fairly constant over a wide range of densities and only dropped below 3.5 meals per day at the low end of prey density, and (2) there was a nonlinear relationship between chick-feeding rates and time spent at the colony, with chick-feeding rates only declining after time at the colony by the nonbrooding parent was reduced to a minimum. The ability of parents to adjust their foraging time by more than 2 h/d explains why they were able to maintain chick-feeding rates of more than 3.5 meals/d across a 10-fold range in local food density. ?? 2007 by the Ecological Society of America.</p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/06-1695.1","issn":"00129658","usgsCitation":"Harding, A., Piatt, J.F., Schmutz, J.A., Shultz, M., van Pelt, T.I., Kettle, A.B., and Speckman, S., 2007, Prey density and the behavioral flexibility of a marine predator: The common murre (<i>Uria aalge</i>): Ecology, v. 88, no. 8, p. 2024-2033, https://doi.org/10.1890/06-1695.1.","productDescription":"10 p.","startPage":"2024","endPage":"2033","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238809,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211510,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/06-1695.1"}],"volume":"88","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8b7ce4b0c8380cd7e275","contributors":{"authors":[{"text":"Harding, A.M.A.","contributorId":29088,"corporation":false,"usgs":true,"family":"Harding","given":"A.M.A.","email":"","affiliations":[],"preferred":false,"id":429736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":429738,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":429735,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shultz, M.T.","contributorId":62006,"corporation":false,"usgs":true,"family":"Shultz","given":"M.T.","email":"","affiliations":[],"preferred":false,"id":429737,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"van Pelt, Thomas I.","contributorId":13392,"corporation":false,"usgs":true,"family":"van Pelt","given":"Thomas","email":"","middleInitial":"I.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":false,"id":429734,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kettle, Arthur B.","contributorId":98064,"corporation":false,"usgs":false,"family":"Kettle","given":"Arthur","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":429739,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Speckman, Suzann G.","contributorId":88217,"corporation":false,"usgs":true,"family":"Speckman","given":"Suzann G.","affiliations":[],"preferred":false,"id":429740,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031540,"text":"70031540 - 2007 - Migration and spawning of female surubim (<i>Pseudoplatystoma corruscans</i>, Pimelodidae) in the São Francisco river, Brazil","interactions":[],"lastModifiedDate":"2015-04-06T10:15:44","indexId":"70031540","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1528,"text":"Environmental Biology of Fishes","active":true,"publicationSubtype":{"id":10}},"title":"Migration and spawning of female surubim (<i>Pseudoplatystoma corruscans</i>, Pimelodidae) in the São Francisco river, Brazil","docAbstract":"<p><span>Surubim,&nbsp;</span><i class=\"a-plus-plus\">Pseudoplatystoma corruscans</i><span>, is the most valuable commercial and recreational fish in the S&atilde;o Francisco River, but little is known about adult migration and spawning. Movements of 24 females (9.5&ndash;29.0&nbsp;kg), which were radio-tagged just downstream of Tr&ecirc;s Marias Dam (TMD) at river kilometer 2,109 and at Pirapora Rapids (PR) 129&nbsp;km downstream of TMD, suggest the following conceptual model of adult female migration and spawning. The tagged surubims used only 274&nbsp;km of the main stem downstream of TMD and two tributaries, the Velhas and Abaet&eacute; rivers. Migration style was dualistic with non-migratory (resident) and migratory fish. Pre-spawning females swam at ground speeds of up to 31&nbsp;km&nbsp;day</span><span class=\"a-plus-plus\">-1</span><span>&nbsp;in late September&ndash;December to pre-spawning staging sites located 0&ndash;11&nbsp;km from the spawning ground. In the spawning season (November&ndash;March), pre-spawning females migrated back and forth from nearby pre-spawning staging sites to PR for short visits to spawn, mostly during floods. Multiple visits to the spawning site suggest surubim is a multiple spawner. Most post-spawning surubims left the spawning ground to forage elsewhere, but some stayed at the spawning site until the next spawning season. Post-spawning migrants swam up or downstream at ground speeds up to 29&nbsp;km&nbsp;day</span><span class=\"a-plus-plus\">-1</span><span>&nbsp;during January&ndash;March. Construction of proposed dams in the main stem and tributaries downstream of TMD will greatly reduce surubim abundance by blocking migrations and changing the river into reservoirs that eliminate riverine spawning and non-spawning habitats, and possibly, cause extirpation of populations.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10641-006-9141-1","issn":"03781909","usgsCitation":"Godinho, A.L., Kynard, B., and Godinho, H.P., 2007, Migration and spawning of female surubim (<i>Pseudoplatystoma corruscans</i>, Pimelodidae) in the São Francisco river, Brazil: Environmental Biology of Fishes, v. 80, no. 4, p. 421-433, https://doi.org/10.1007/s10641-006-9141-1.","productDescription":"13 p.","startPage":"421","endPage":"433","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":239698,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212240,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10641-006-9141-1"}],"country":"Brazil","otherGeospatial":"Sao Francisco River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -45.122222900390625,\n              -17.787920134296662\n            ],\n            [\n              -45.122222900390625,\n              -16.626981003356775\n            ],\n            [\n              -44.615478515625,\n              -16.626981003356775\n            ],\n            [\n              -44.615478515625,\n              -17.787920134296662\n            ],\n            [\n              -45.122222900390625,\n              -17.787920134296662\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"80","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-10-17","publicationStatus":"PW","scienceBaseUri":"505a56f7e4b0c8380cd6d963","contributors":{"authors":[{"text":"Godinho, Alexandre L.","contributorId":75324,"corporation":false,"usgs":true,"family":"Godinho","given":"Alexandre","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":432009,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kynard, Boyd","contributorId":84234,"corporation":false,"usgs":true,"family":"Kynard","given":"Boyd","affiliations":[],"preferred":false,"id":432008,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Godinho, Hugo P.","contributorId":36756,"corporation":false,"usgs":true,"family":"Godinho","given":"Hugo","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":432007,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030982,"text":"70030982 - 2007 - Putting it all together: Exhumation histories from a formal combination of heat flow and a suite of thermochronometers","interactions":[],"lastModifiedDate":"2023-07-28T11:13:35.268476","indexId":"70030982","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Putting it all together: Exhumation histories from a formal combination of heat flow and a suite of thermochronometers","docAbstract":"<p>A suite of new techniques in thermochronometry allow analysis of the thermal history of a sample over a broad range of temperature sensitivities. New analysis tools must be developed that fully and formally integrate these techniques, allowing a single geologic interpretation of the rate and timing of exhumation and burial events consistent with all data. We integrate a thermal model of burial and exhumation, (U-Th)/He age modeling, and fission track age and length modeling. We then use a genetic algorithm to efficiently explore possible time-exhumation histories of a vertical sample profile (such as a borehole), simultaneously solving for exhumation and burial rates as well as changes in background heat flow. We formally combine all data in a rigorous statistical fashion. By parameterizing the model in terms of exhumation rather than time-temperature paths (as traditionally done in fission track modeling), we can ensure that exhumation histories result in a sedimentary basin whose thickness is consistent with the observed basin, a physically based constraint that eliminates otherwise acceptable thermal histories. We apply the technique to heat flow and thermochronometry data from the 2.1 -km-deep San Andreas Fault Observatory at Depth pilot hole near the San Andreas fault, California. We find that the site experienced &lt;1 km of exhumation or burial since the onset of San Andreas fault activity&nbsp;</p>","language":"English","publisher":"Wiley","doi":"10.1029/2006JB004725","issn":"01480227","usgsCitation":"d'Alessio, M., and Williams, C., 2007, Putting it all together: Exhumation histories from a formal combination of heat flow and a suite of thermochronometers: Journal of Geophysical Research B: Solid Earth, v. 112, no. 8, B08412, 17 p., https://doi.org/10.1029/2006JB004725.","productDescription":"B08412, 17 p.","costCenters":[],"links":[{"id":477000,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jb004725","text":"Publisher Index Page"},{"id":238937,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-08-16","publicationStatus":"PW","scienceBaseUri":"505a9049e4b0c8380cd7fc46","contributors":{"authors":[{"text":"d'Alessio, M. A.","contributorId":43159,"corporation":false,"usgs":true,"family":"d'Alessio","given":"M. A.","affiliations":[],"preferred":false,"id":429493,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, C.F. 0000-0003-2196-5496","orcid":"https://orcid.org/0000-0003-2196-5496","contributorId":20401,"corporation":false,"usgs":true,"family":"Williams","given":"C.F.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":429492,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031841,"text":"70031841 - 2007 - Bacterioplankton communities of Crater Lake, OR: Dynamic changes with euphotic zone food web structure and stable deep water populations","interactions":[],"lastModifiedDate":"2017-11-15T14:15:50","indexId":"70031841","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Bacterioplankton communities of Crater Lake, OR: Dynamic changes with euphotic zone food web structure and stable deep water populations","docAbstract":"The distribution of bacterial and archaeal species in Crater Lake plankton varies dramatically over depth and with time, as assessed by hybridization of group-specific oligonucleotides to RNA extracted from lakewater. Nonmetric, multidimensional scaling (MDS) analysis of relative bacterial phylotype densities revealed complex relationships among assemblages sampled from depth profiles in July, August and September of 1997 through 1999. CL500-11 green nonsulfur bacteria (Phylum Chloroflexi) and marine Group I crenarchaeota are consistently dominant groups in the oxygenated deep waters at 300 and 500 m. Other phylotypes found in the deep waters are similar to surface and mid-depth populations and vary with time. Euphotic zone assemblages are dominated either by ??-proteobacteria or CL120-10 verrucomicrobia, and ACK4 actinomycetes. MDS analyses of euphotic zone populations in relation to environmental variables and phytoplankton and zooplankton population structures reveal apparent links between Daphnia pulicaria zooplankton population densities and microbial community structure. These patterns may reflect food web interactions that link kokanee salmon population densities to community structure of the bacterioplankton, via fish predation on Daphnia with cascading consequences to Daphnia bacterivory and predation on bacterivorous protists. These results demonstrate a stable bottom-water microbial community. They also extend previous observations of food web-driven changes in euphotic zone bacterioplankton community structure to an oligotrophic setting. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10750-006-0351-5","issn":"00188158","usgsCitation":"Urbach, E., Vergin, K., Larson, G., and Giovannoni, S.J., 2007, Bacterioplankton communities of Crater Lake, OR: Dynamic changes with euphotic zone food web structure and stable deep water populations: Hydrobiologia, v. 574, no. 1, p. 161-177, https://doi.org/10.1007/s10750-006-0351-5.","startPage":"161","endPage":"177","numberOfPages":"17","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":242349,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214609,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10750-006-0351-5"}],"volume":"574","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059efa7e4b0c8380cd4a39b","contributors":{"authors":[{"text":"Urbach, E.","contributorId":78568,"corporation":false,"usgs":true,"family":"Urbach","given":"E.","email":"","affiliations":[],"preferred":false,"id":433378,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vergin, K.L.","contributorId":54026,"corporation":false,"usgs":true,"family":"Vergin","given":"K.L.","affiliations":[],"preferred":false,"id":433377,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Larson, G.L.","contributorId":103021,"corporation":false,"usgs":true,"family":"Larson","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":433380,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giovannoni, S. J.","contributorId":100211,"corporation":false,"usgs":false,"family":"Giovannoni","given":"S.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":433379,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70146529,"text":"70146529 - 2007 - High-resolution measurements of suspended-sediment","interactions":[],"lastModifiedDate":"2015-04-16T10:03:02","indexId":"70146529","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"High-resolution measurements of suspended-sediment","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the Tenth International Symposium on River Sedimentation, August 1-4, 2007, Moscow, Russia","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Moscow State University","usgsCitation":"Topping, D.J., Wright, S., Melis, T., and Rubin, D.M., 2007, High-resolution measurements of suspended-sediment, <i>in</i> Proceedings of the Tenth International Symposium on River Sedimentation, August 1-4, 2007, Moscow, Russia, v. III, p. 330-338.","productDescription":"9 p.","startPage":"330","endPage":"338","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":502,"text":"Office of Surface Water","active":true,"usgs":true}],"links":[{"id":299717,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Colorado River, Grand Canyon","volume":"III","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5530dd2fe4b0b22a1580615e","contributors":{"authors":[{"text":"Topping, David J. 0000-0002-2104-4577 dtopping@usgs.gov","orcid":"https://orcid.org/0000-0002-2104-4577","contributorId":715,"corporation":false,"usgs":true,"family":"Topping","given":"David","email":"dtopping@usgs.gov","middleInitial":"J.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":false,"id":545058,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, Scott 0000-0002-0387-5713 sawright@usgs.gov","orcid":"https://orcid.org/0000-0002-0387-5713","contributorId":1536,"corporation":false,"usgs":true,"family":"Wright","given":"Scott","email":"sawright@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":545059,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Melis, Theodore S. 0000-0003-0473-3968 tmelis@usgs.gov","orcid":"https://orcid.org/0000-0003-0473-3968","contributorId":1829,"corporation":false,"usgs":true,"family":"Melis","given":"Theodore S.","email":"tmelis@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":545060,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rubin, David M. 0000-0003-1169-1452 drubin@usgs.gov","orcid":"https://orcid.org/0000-0003-1169-1452","contributorId":3159,"corporation":false,"usgs":true,"family":"Rubin","given":"David","email":"drubin@usgs.gov","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":545061,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031871,"text":"70031871 - 2007 - Stress orientations of Taiwan Chelungpu-Fault Drilling Project (TCDP) hole-A as observed from geophysical logs","interactions":[],"lastModifiedDate":"2023-10-06T12:10:06.323192","indexId":"70031871","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Stress orientations of Taiwan Chelungpu-Fault Drilling Project (TCDP) hole-A as observed from geophysical logs","docAbstract":"<div class=\"\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>The Taiwan Chelungpu-fault Drilling Project (TCDP) drilled a 2-km-deep research borehole to investigate the structure and mechanics of the Chelungpu Fault that ruptured in the 1999 M<sub>w</sub><span>&nbsp;</span>7.6 Chi-Chi earthquake. Geophysical logs of the TCDP were carried out over depths of 500–1900 m, including Dipole Sonic Imager (DSI) logs and Formation Micro Imager (FMI) logs in order to identify bedding planes, fractures and shear zones. From the continuous core obtained from the borehole, a shear zone at a depth of 1110 meters is interpreted to be the Chelungpu fault, located within the Chinshui Shale, which extends from 1013 to 1300 meters depth. Stress-induced borehole breakouts were observed over nearly the entire length of the wellbore. These data show an overall stress direction (∼N115°E) that is essentially parallel to the regional stress field and parallel to the convergence direction of the Philippine Sea plate with respect to the Eurasian plate. Variability in the average stress direction is seen at various depths. In particular there is a major stress orientation anomaly in the vicinity of the Chelungpu fault. Abrupt stress rotations at depths of 1000 m and 1310 m are close to the Chinshui Shale's upper and lower boundaries, suggesting the possibility that bedding plane slip occurred during the Chi-Chi earthquake.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006GL028050","issn":"00948276","usgsCitation":"Wu, H., Ma, K., Zoback, M., Boness, N., Ito, H., Hung, J., and Hickman, S., 2007, Stress orientations of Taiwan Chelungpu-Fault Drilling Project (TCDP) hole-A as observed from geophysical logs: Geophysical Research Letters, v. 34, no. 1, L01303, 6 p., https://doi.org/10.1029/2006GL028050.","productDescription":"L01303, 6 p.","costCenters":[],"links":[{"id":488964,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gl028050","text":"Publisher Index Page"},{"id":242816,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Taiwan","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              119.39006923386358,\n              26.177838930914135\n            ],\n            [\n              119.39006923386358,\n              21.189757046215036\n            ],\n            [\n              122.86174892136455,\n              21.189757046215036\n            ],\n            [\n              122.86174892136455,\n              26.177838930914135\n            ],\n            [\n              119.39006923386358,\n              26.177838930914135\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"34","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-01-05","publicationStatus":"PW","scienceBaseUri":"505b9b62e4b08c986b31ce40","contributors":{"authors":[{"text":"Wu, H.-Y.","contributorId":70199,"corporation":false,"usgs":true,"family":"Wu","given":"H.-Y.","email":"","affiliations":[],"preferred":false,"id":433518,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ma, K.-F.","contributorId":85371,"corporation":false,"usgs":false,"family":"Ma","given":"K.-F.","email":"","affiliations":[],"preferred":false,"id":433520,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zoback, M.","contributorId":17797,"corporation":false,"usgs":true,"family":"Zoback","given":"M.","email":"","affiliations":[],"preferred":false,"id":433515,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boness, N.","contributorId":31218,"corporation":false,"usgs":true,"family":"Boness","given":"N.","affiliations":[],"preferred":false,"id":433516,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ito, H.","contributorId":15800,"corporation":false,"usgs":true,"family":"Ito","given":"H.","email":"","affiliations":[],"preferred":false,"id":433514,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hung, J.-H.","contributorId":57286,"corporation":false,"usgs":true,"family":"Hung","given":"J.-H.","email":"","affiliations":[],"preferred":false,"id":433517,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hickman, S.","contributorId":79995,"corporation":false,"usgs":true,"family":"Hickman","given":"S.","email":"","affiliations":[],"preferred":false,"id":433519,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031039,"text":"70031039 - 2007 - Does species diversity limit productivity in natural grassland communities?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031039","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1466,"text":"Ecology Letters","active":true,"publicationSubtype":{"id":10}},"title":"Does species diversity limit productivity in natural grassland communities?","docAbstract":"Theoretical analyses and experimental studies of synthesized assemblages indicate that under particular circumstances species diversity can enhance community productivity through niche complementarity. It remains unclear whether this process has important effects in mature natural ecosystems where competitive feedbacks and complex environmental influences affect diversity-productivity relationships. In this study, we evaluated diversity-productivity relationships while statistically controlling for environmental influences in 12 natural grassland ecosystems. Because diversity-productivity relationships are conspicuously nonlinear, we developed a nonlinear structural equation modeling (SEM) methodology to separate the effects of diversity on productivity from the effects of productivity on diversity. Meta-analysis was used to summarize the SEM findings across studies. While competitive effects were readily detected, enhancement of production by diversity was not. These results suggest that the influence of small-scale diversity on productivity in mature natural systems is a weak force, both in absolute terms and relative to the effects of other controls on productivity. ?? 2007 Blackwell Publishing Ltd/CNRS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1461-0248.2007.01058.x","issn":"1461023X","usgsCitation":"Grace, J., Anderson, T., Smith, M.D., Seabloom, E., Andelman, S., Meche, G., Weiher, E., Allain, L., Jutila, H., Sankaran, M., Knops, J., Ritchie, M., and Willig, M.R., 2007, Does species diversity limit productivity in natural grassland communities?: Ecology Letters, v. 10, no. 8, p. 680-689, https://doi.org/10.1111/j.1461-0248.2007.01058.x.","startPage":"680","endPage":"689","numberOfPages":"10","costCenters":[],"links":[{"id":211482,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1461-0248.2007.01058.x"},{"id":238777,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-06-11","publicationStatus":"PW","scienceBaseUri":"505a0397e4b0c8380cd50564","contributors":{"authors":[{"text":"Grace, J.B. 0000-0001-6374-4726","orcid":"https://orcid.org/0000-0001-6374-4726","contributorId":38938,"corporation":false,"usgs":true,"family":"Grace","given":"J.B.","affiliations":[],"preferred":false,"id":429725,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, T.M.","contributorId":70996,"corporation":false,"usgs":true,"family":"Anderson","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":429730,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, M. D.","contributorId":25724,"corporation":false,"usgs":false,"family":"Smith","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":429724,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Seabloom, E.","contributorId":86967,"corporation":false,"usgs":true,"family":"Seabloom","given":"E.","email":"","affiliations":[],"preferred":false,"id":429731,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Andelman, S.J.","contributorId":25113,"corporation":false,"usgs":true,"family":"Andelman","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":429723,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Meche, G.","contributorId":43565,"corporation":false,"usgs":true,"family":"Meche","given":"G.","affiliations":[],"preferred":false,"id":429727,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Weiher, E.","contributorId":18155,"corporation":false,"usgs":true,"family":"Weiher","given":"E.","email":"","affiliations":[],"preferred":false,"id":429721,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Allain, L.K. 0000-0002-7717-9761","orcid":"https://orcid.org/0000-0002-7717-9761","contributorId":22141,"corporation":false,"usgs":true,"family":"Allain","given":"L.K.","affiliations":[],"preferred":false,"id":429722,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Jutila, H.","contributorId":42782,"corporation":false,"usgs":true,"family":"Jutila","given":"H.","email":"","affiliations":[],"preferred":false,"id":429726,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Sankaran, M.","contributorId":96475,"corporation":false,"usgs":true,"family":"Sankaran","given":"M.","affiliations":[],"preferred":false,"id":429732,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Knops, J.","contributorId":61641,"corporation":false,"usgs":true,"family":"Knops","given":"J.","email":"","affiliations":[],"preferred":false,"id":429728,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Ritchie, M.","contributorId":106701,"corporation":false,"usgs":true,"family":"Ritchie","given":"M.","email":"","affiliations":[],"preferred":false,"id":429733,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Willig, M. R.","contributorId":68517,"corporation":false,"usgs":true,"family":"Willig","given":"M.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":429729,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
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