{"pageNumber":"3504","pageRowStart":"87575","pageSize":"25","recordCount":184938,"records":[{"id":70021295,"text":"70021295 - 1998 - A mini drivepoint sampler for measuring pore water solute concentrations in the hyporheic zone of sand-bottom streams","interactions":[],"lastModifiedDate":"2020-01-06T06:20:36","indexId":"70021295","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"A mini drivepoint sampler for measuring pore water solute concentrations in the hyporheic zone of sand-bottom streams","docAbstract":"A new method for collecting pore-water samples in sand and gravel streambeds is presented. We developed a mini drivepoint solution sampling (MINIPOINT) technique to collect pore-water samples at 2.5-cm vertical resolution. The sampler consisted of six small-diameter stainless steel drivepoints arranged in a 10-cm-diameter circular array. In a simple procedure, the sampler was installed in the streambed to preset drivepoint depths of 2.5, 5.0, 7.5, 10.0, 12.5, and 15.0 cm. Sampler performance was evaluated in the Shingobee River, Minnesota, and Pinal Creek, Arizona, by measuring the vertical gradient of chloride concentration in pore water beneath the streambed that was established by the uninterrupted injection to the stream for 3 d. Pore-water samples were withdrawn from all drivepoints simultaneously. In the first evaluation, the vertical chloride gradient was unchanged at withdrawal rates between 0.3 and 4.0 ml min-1 but was disturbed at higher rates. In the second evaluation, up to 70 ml of pore water was withdrawn from each drivepoint at a withdrawal rate of 2.5 ml min-1 without disturbing the vertical chloride gradient. Background concentrations of other solutes were also determined with MINIPOINT sampling. Steep vertical gradients were present for biologically reactive solutes such as DO, NH4/+, NO3/-, and dissolved organic C in the top 20 cm of the streambed. These detailed solute profiles in the hyporheic zone could not have been determined without a method for close interval vertical sampling that does not disturb natural hydrologic mixing between stream water and groundwater.","language":"English","publisher":"Wiley","issn":"00243590","usgsCitation":"Duff, J.H., Murphy, F., Fuller, C.C., Triska, F., Harvey, J.W., and Jackman, A.P., 1998, A mini drivepoint sampler for measuring pore water solute concentrations in the hyporheic zone of sand-bottom streams: Limnology and Oceanography, v. 43, no. 6, p. 1378-1383.","productDescription":"6 p.","startPage":"1378","endPage":"1383","numberOfPages":"6","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":230103,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e467e4b0c8380cd4662f","contributors":{"authors":[{"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":778900,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murphy, Fred 0000-0001-6147-7564 fmurphy@usgs.gov","orcid":"https://orcid.org/0000-0001-6147-7564","contributorId":209970,"corporation":false,"usgs":true,"family":"Murphy","given":"Fred","email":"fmurphy@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":778901,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":778902,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Triska, F.","contributorId":70173,"corporation":false,"usgs":true,"family":"Triska","given":"F.","email":"","affiliations":[],"preferred":false,"id":778903,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Harvey, Judson W. 0000-0002-2654-9873 jwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":1796,"corporation":false,"usgs":true,"family":"Harvey","given":"Judson","email":"jwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":778904,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jackman, Alan P.","contributorId":28239,"corporation":false,"usgs":true,"family":"Jackman","given":"Alan","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":778905,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70021289,"text":"70021289 - 1998 - Anthropogenic effects on winter behavior of ferruginous hawks","interactions":[],"lastModifiedDate":"2024-09-16T11:30:28.408997","indexId":"70021289","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Anthropogenic effects on winter behavior of ferruginous hawks","docAbstract":"<div class=\"abstract-container abstract-info\" data-v-6f3e0b52=\"\" data-v-f5d858dc=\"\" data-ajax=\"false\"><div class=\"abstract\" data-v-6f3e0b52=\"\"><div data-v-6f3e0b52=\"\">Little information is known about the ecology of ferruginous hawks (Buteo regalis) in winter versus the breeding season and less about how the species adapts to fragmented grassland habitats. Accordingly, we studied the behavior of 38 radiotagged ferruginous hawks during 3 winters from 1992 to 1995. We used 2 adjacent sites in Colorado that were characterized by low and high levels of anthropogenic influence and habitat fragmentation: the Rocky Mountain Arsenal National Wildlife Refuge (RMANWR; low-level influence), and several adjacent Denver suburbs (high-level influence). Relative abundance of ferruginous hawks differed by treatment area and year (P &lt; 0.001); hawks were most numerous where black-tailed prairie dogs (Cynomys ludovicianus) were most plentiful. Daily Minimum Convex Polygon (MCP) home range areas did not differ (P = 0.28) for RMANWR (x̄ = 4.71 km2, SE = 1.33, n = 25) and suburban hawks (x̄ = 2.30 km2, SE = 0.50, n = 13). The number of perches occupied per day between the sites was not different (P = 0.14), but hawks at RMANWR used pole and ground perches more frequently and for a greater portion of the daily time budget (P &lt; 0.05). Hawks at RMANWR spent less time roosting after sunrise (x̄ = 61 min) than did suburban hawks (x̄ = 138 min; P = 0.004) and spent less time roosting during the day (RMANWR = 100 min; suburb = 189 min; P = 0.009). Prey acquisition and associated intra- and interspecific interactions were not different (P &gt; 0.05) at RMANWR and suburban sites. Ferruginous hawks appear to modify their behavior in fragmented, largely human-altered habitats, provided some foraging habitats with adequate populations of suitable prey species are present.</div></div></div>","language":"English","publisher":"Wildlife Society","doi":"10.2307/3802297","issn":"0022541X","usgsCitation":"Plumpton, D., and Andersen, D., 1998, Anthropogenic effects on winter behavior of ferruginous hawks: Journal of Wildlife Management, v. 62, no. 1, p. 340-346, https://doi.org/10.2307/3802297.","productDescription":"7 p.","startPage":"340","endPage":"346","numberOfPages":"7","costCenters":[],"links":[{"id":230025,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"62","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec5ae4b0c8380cd491f8","contributors":{"authors":[{"text":"Plumpton, D.L.","contributorId":41617,"corporation":false,"usgs":true,"family":"Plumpton","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":389362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Andersen, D. E.","contributorId":27816,"corporation":false,"usgs":true,"family":"Andersen","given":"D. E.","affiliations":[],"preferred":false,"id":389361,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70021312,"text":"70021312 - 1998 - A Reassessment of U-Th and 14C Ages for Late-Glacial High-Frequency Hydrological Events at Searles Lake, California","interactions":[],"lastModifiedDate":"2013-01-25T13:24:18","indexId":"70021312","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"A Reassessment of U-Th and 14C Ages for Late-Glacial High-Frequency Hydrological Events at Searles Lake, California","docAbstract":"U-Th isochron ages of tufas formed on shorelines suggest that the last pluvial event in Lake Lahontan and Searles Lake was synchronous at about 16,500 cal yr B.P. (equivalent to a radiocarbon age of between 14,000 and 13,500 yr B.P.), whereas the timing of this pluvial event determined by radiocarbon dating is on the order of 1000 yr younger. The timing of seven distinct periods of near desiccation in Searles Lake during late-glacial time has been reinvestigated for U-Th age determination by mass spectrometry. U-Th dating of evaporite layers in the interbedded mud and salt unit called the Lower Salt in Searles Lake was hampered by the uncertainty in assessing the initial 230Th/232Th of the samples. The resulting ages, corrected by a conservative range of initial 230Th/ 232Th ratios, suggest close correlation of the abrupt changes recorded in Greenland ice cores (Dansgaard-Oeschger events) and wet-dry conditions in Searles Lake between 35,000 and 24,000 Cal yr B.P. ?? 1998 University of Washington.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1006/qres.1997.1949","issn":"00335894","usgsCitation":"Lin, J., Broecker, W., Hemming, S.R., Hajdas, I., Anderson, R.F., Smith, G., Kelley, M., and Bonani, G., 1998, A Reassessment of U-Th and 14C Ages for Late-Glacial High-Frequency Hydrological Events at Searles Lake, California: Quaternary Research, v. 49, no. 1, p. 11-23, https://doi.org/10.1006/qres.1997.1949.","startPage":"11","endPage":"23","numberOfPages":"13","costCenters":[],"links":[{"id":266459,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1006/qres.1997.1949"},{"id":229784,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059e2fce4b0c8380cd45d7c","contributors":{"authors":[{"text":"Lin, J.C.","contributorId":96037,"corporation":false,"usgs":true,"family":"Lin","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":389439,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Broecker, W.S.","contributorId":95195,"corporation":false,"usgs":true,"family":"Broecker","given":"W.S.","affiliations":[],"preferred":false,"id":389438,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hemming, S. R.","contributorId":71225,"corporation":false,"usgs":true,"family":"Hemming","given":"S.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":389436,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hajdas, Irka","contributorId":97272,"corporation":false,"usgs":true,"family":"Hajdas","given":"Irka","email":"","affiliations":[],"preferred":false,"id":389440,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Anderson, Robert F.","contributorId":14139,"corporation":false,"usgs":true,"family":"Anderson","given":"Robert","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":389434,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smith, G.I.","contributorId":103694,"corporation":false,"usgs":true,"family":"Smith","given":"G.I.","email":"","affiliations":[],"preferred":false,"id":389441,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kelley, M.","contributorId":92452,"corporation":false,"usgs":true,"family":"Kelley","given":"M.","affiliations":[],"preferred":false,"id":389437,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bonani, G.","contributorId":26100,"corporation":false,"usgs":true,"family":"Bonani","given":"G.","email":"","affiliations":[],"preferred":false,"id":389435,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70021313,"text":"70021313 - 1998 - Channel stability of Turkey Creek, Nebraska","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021313","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Channel stability of Turkey Creek, Nebraska","docAbstract":"Channelization on Turkey Creek and its receiving stream, the South Fork Big Nemaha River, has disturbed the equilibrium of Turkey Creek and has led to channel-stability problems, such as degradation and channel widening, which pose a threat to bridges and land adjacent to the stream. As part of a multiagency study, the U.S. Geological Survey assessed channel stability at two bridge sites on upper and middle portions of Turkey Creek by analyzing streambed-elevation data for gradation changes, comparing recent cross-section surveys and historic accounts, identifying bank-failure blocks, and analyzing tree-ring samples. These results were compared to gradation data and trend results for a U.S. Geological Survey streamflow-gaging station near the mouth of Turkey Creek from a previous study. Examination of data on streambed elevations reveals that degradation has occurred. The streambed elevation declined 0.5 m at the upper site from 1967-97. The streambed elevation declined by 3.2 m at the middle site from 1948-97 and exposed 2 m of the pilings of the Nebraska Highway 8 bridge. Channel widening could not be verified at the two sites from 1967-97, but a historic account indicates widening at the middle site to be two to three times that of the 1949 channel width. Small bank failures were evident at the upper site and a 4-m-wide bank failure occurred at the middle site in 1987 according to tree ring analyses. Examination of streambed-elevation data from a previous study at the lower site reveals a statistically significant aggrading trend from 1958-93. Further examination of these data suggests minor degradation occurred until 1975, followed by aggradation.","largerWorkTitle":"International Water Resources Engineering Conference - Proceedings","conferenceTitle":"Proceedings of the 1998 International Water Resources Engineering Conference. Part 2 (of 2)","conferenceDate":"3 August 1998 through 7 August 1998","conferenceLocation":"Memphis, TN, USA","language":"English","publisher":"ASCE","publisherLocation":"Reston, VA, United States","usgsCitation":"Rus, D.L., and Soenksen, P.J., 1998, Channel stability of Turkey Creek, Nebraska, <i>in</i> International Water Resources Engineering Conference - Proceedings, v. 1, Memphis, TN, USA, 3 August 1998 through 7 August 1998, p. 423-428.","startPage":"423","endPage":"428","numberOfPages":"6","costCenters":[],"links":[{"id":229785,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f45ae4b0c8380cd4bca6","contributors":{"authors":[{"text":"Rus, David L. 0000-0003-3538-7826 dlrus@usgs.gov","orcid":"https://orcid.org/0000-0003-3538-7826","contributorId":881,"corporation":false,"usgs":true,"family":"Rus","given":"David","email":"dlrus@usgs.gov","middleInitial":"L.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":389442,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Soenksen, Philip J. pjsoenks@usgs.gov","contributorId":3983,"corporation":false,"usgs":true,"family":"Soenksen","given":"Philip","email":"pjsoenks@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":389443,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70021314,"text":"70021314 - 1998 - Postaudit of optimal conjunctive use policies","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021314","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Postaudit of optimal conjunctive use policies","docAbstract":"A simulation-optimization model was developed for the optimal management of the city of Santa Barbara's water resources during a drought; however, this model addressed only groundwater flow and not the advective-dispersive, density-dependent transport of seawater. Zero-m freshwater head constraints at the coastal boundary were used as surrogates for the control of seawater intrusion. In this study, the strategies derived from the simulation-optimization model using two surface water supply scenarios are evaluated using a two-dimensional, density-dependent groundwater flow and transport model. Comparisons of simulated chloride mass fractions are made between maintaining the actual pumping policies of the 1987-91 drought and implementing the optimal pumping strategies for each scenario. The results indicate that using 0-m freshwater head constraints allowed no more seawater intrusion than under actual 1987-91 drought conditions and that the simulation-optimization model yields least-cost strategies that deliver more water than under actual drought conditions while controlling seawater intrusion.","largerWorkTitle":"Proceedings of the Annual Water Resources Planning and Management Conference","conferenceTitle":"Proceedings of the 1998 25th Annual Conference on Water Resources Planning and Management","conferenceDate":"7 June 1998 through 10 June 1998","conferenceLocation":"Chicago, IL, USA","language":"English","publisher":"ASCE","publisherLocation":"Reston, VA, United States","usgsCitation":"Nishikawa, T., and Martin, P., 1998, Postaudit of optimal conjunctive use policies, <i>in</i> Proceedings of the Annual Water Resources Planning and Management Conference, Chicago, IL, USA, 7 June 1998 through 10 June 1998, p. 591-596.","startPage":"591","endPage":"596","numberOfPages":"6","costCenters":[],"links":[{"id":229786,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e74e4b0c8380cd7a55c","contributors":{"editors":[{"text":"Loucks E","contributorId":128438,"corporation":true,"usgs":false,"organization":"Loucks E","id":536469,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Nishikawa, Tracy 0000-0002-7348-3838 tnish@usgs.gov","orcid":"https://orcid.org/0000-0002-7348-3838","contributorId":1515,"corporation":false,"usgs":true,"family":"Nishikawa","given":"Tracy","email":"tnish@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":389445,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, Peter pmmartin@usgs.gov","contributorId":799,"corporation":false,"usgs":true,"family":"Martin","given":"Peter","email":"pmmartin@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":389444,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70021359,"text":"70021359 - 1998 - Spawning ecology of flannelmouth sucker, Catostomus lattipinnis (Catostomidae), in two small tributaries of the lower Colorado river","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021359","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Spawning ecology of flannelmouth sucker, Catostomus lattipinnis (Catostomidae), in two small tributaries of the lower Colorado river","docAbstract":"We report the first published accounts of spawning behavior and spawning site selection of the flannelmouth sucker in two small tributaries of the lower Colorado River in the Grand Canyon, Arizona. Spawning was observed on 20 March 1992 and from 28 March to 10 April 1993 in the Paria River, and from 16 to 19 March 1993 in Bright Angel Creek. Flannelmouth suckers exhibited promiscuous spawning behavior-individual females were typically paired with two or more males for a given event and sometimes changed partners between events. Multiple egg deposits by different females sometimes occurred at one spawning site. Flannelmouth sucker selected substrates from 16 to 32 mm diameter in both streams. Spawning occurred at depths of 10 to 25 cm in the Paria River and 19 to 41 cm in Bright Angel Creek. Mean column water velocities at spawning locations ranged from 0.15 to 1.0 m sec-1 in the Paria River and from 0.23 to 0.89 m sec-1 in Bright Angel Creek. Water temperatures recorded during spawning ranged from 9 to 18??C in the Paria River and 13 to 15??C in Bright Angel Creek. Spawning flannelmouth sucker ascended 9.8 km upstream in the Paria River and 1.25 km in Bright Angel Creek. Spawning females (410-580 mm) were significantly larger than spawning males (385-530 mm) in the Paria River. The mean size of spawning fish in the Paria River was significantly smaller than the entire stock, averaged throughout the study period (380-620 mm). However, fish spawning in 1992-1993 averaged 53 mm larger than fish spawning in the same reach of the Paria River in 1981, indicating a shift in the size structure of this stock.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Biology of Fishes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1023/A:1007497513762","issn":"03781909","usgsCitation":"Weiss, S., Otis, E., and Maughan, O., 1998, Spawning ecology of flannelmouth sucker, Catostomus lattipinnis (Catostomidae), in two small tributaries of the lower Colorado river: Environmental Biology of Fishes, v. 52, no. 4, p. 419-433, https://doi.org/10.1023/A:1007497513762.","startPage":"419","endPage":"433","numberOfPages":"15","costCenters":[],"links":[{"id":206467,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1023/A:1007497513762"},{"id":229868,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b94d5e4b08c986b31ac79","contributors":{"authors":[{"text":"Weiss, S.J.","contributorId":72550,"corporation":false,"usgs":true,"family":"Weiss","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":389593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Otis, E.O.","contributorId":80028,"corporation":false,"usgs":true,"family":"Otis","given":"E.O.","email":"","affiliations":[],"preferred":false,"id":389594,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maughan, O.E.","contributorId":70520,"corporation":false,"usgs":true,"family":"Maughan","given":"O.E.","email":"","affiliations":[],"preferred":false,"id":389592,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70021360,"text":"70021360 - 1998 - Using sediment 'fingerprints' to assess sediment-budget errors, north Halawa Valley, Oahu, Hawaii, 1991-92","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021360","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Using sediment 'fingerprints' to assess sediment-budget errors, north Halawa Valley, Oahu, Hawaii, 1991-92","docAbstract":"Reliable estimates of sediment-budget errors are important for interpreting sediment-budget results. Sediment-budget errors are commonly considered equal to sediment-budget imbalances, which may underestimate actual sediment-budget errors if they include compensating positive and negative errors. We modified the sediment 'fingerprinting' approach to qualitatively evaluate compensating errors in an annual (1991) fine (<63 ??m) sediment budget for the North Halawa Valley, a mountainous, forested drainage basin on the island of Oahu, Hawaii, during construction of a major highway. We measured concentrations of aeolian quartz and 137Cs in sediment sources and fluvial sediments, and combined concentrations of these aerosols with the sediment budget to construct aerosol budgets. Aerosol concentrations were independent of the sediment budget, hence aerosol budgets were less likely than sediment budgets to include compensating errors. Differences between sediment-budget and aerosol-budget imbalances therefore provide a measure of compensating errors in the sediment budget. The sediment-budget imbalance equalled 25% of the fluvial fine-sediment load. Aerosol-budget imbalances were equal to 19% of the fluvial 137Cs load and 34% of the fluval quartz load. The reasonably close agreement between sediment- and aerosol-budget imbalances indicates that compensating errors in the sediment budget were not large and that the sediment-budget imbalance as a reliable measure of sediment-budget error. We attribute at least one-third of the 1991 fluvial fine-sediment load to highway construction. Continued monitoring indicated that highway construction produced 90% of the fluvial fine-sediment load during 1992. Erosion of channel margins and attrition of coarse particles provided most of the fine sediment produced by natural processes. Hillslope processes contributed relatively minor amounts of sediment.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth Surface Processes and Landforms","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/(SICI)1096-9837(199806)23:6<493::AID-ESP862>3.0.CO;2-V","issn":"01979337","usgsCitation":"Hill, B.R., DeCarlo, E., Fuller, C.C., and Wong, M., 1998, Using sediment 'fingerprints' to assess sediment-budget errors, north Halawa Valley, Oahu, Hawaii, 1991-92: Earth Surface Processes and Landforms, v. 23, no. 6, p. 493-508, https://doi.org/10.1002/(SICI)1096-9837(199806)23:6<493::AID-ESP862>3.0.CO;2-V.","startPage":"493","endPage":"508","numberOfPages":"16","costCenters":[],"links":[{"id":206473,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/(SICI)1096-9837(199806)23:6<493::AID-ESP862>3.0.CO;2-V"},{"id":229910,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc099e4b08c986b32a201","contributors":{"authors":[{"text":"Hill, B. R.","contributorId":72833,"corporation":false,"usgs":true,"family":"Hill","given":"B.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":389597,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DeCarlo, E.H.","contributorId":95212,"corporation":false,"usgs":true,"family":"DeCarlo","given":"E.H.","email":"","affiliations":[],"preferred":false,"id":389598,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, C. C.","contributorId":29858,"corporation":false,"usgs":true,"family":"Fuller","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":389595,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wong, M.F.","contributorId":41052,"corporation":false,"usgs":true,"family":"Wong","given":"M.F.","email":"","affiliations":[],"preferred":false,"id":389596,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70021361,"text":"70021361 - 1998 - Species-environment relationships and vegetation patterns: Effects of spatial scale and tree life-stage","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021361","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Species-environment relationships and vegetation patterns: Effects of spatial scale and tree life-stage","docAbstract":"Do relationships between species and environmental gradients strengthen or weaken with tree life-stage (i.e., small seedlings, large seedlings, saplings, and mature trees)? Strengthened relationships may lead to distinct forest type boundaries, or weakening connections could lead to gradual ecotones and heterogeneous forest landscapes. We quantified the changes in forest dominance (basal area of tree species by life-stage) and environmental factors (elevation, slope, aspect, intercepted photosynthetically active radiation (PAR), summer soil moisture, and soil depth and texture) across 14 forest ecotones (n = 584, 10 m x 10 m plots) in Rocky Mountain National Park, Colorado, U.S.A. Local, ecotone-specific species-environment relationships, based on multiple regression techniques, generally strengthened from the small seedling stage (multiple R2 ranged from 0.00 to 0.26) to the tree stage (multiple R2 ranged from 0.20 to 0.61). At the landscape scale, combined canonical correspondence analysis (CCA) among species and for all tree life-stages suggested that the seedlings of most species became established in lower-elevation, drier sites than where mature trees of the same species dominated. However, conflicting evidence showed that species-environment relationships may weaken with tree life-stage. Seedlings were only found in a subset of plots (habitats) occupied by mature trees of the same species. At the landscape scale, CCA results showed that species-environment relationships weakened somewhat from the small seedling stage (86.4% of the variance explained by the first two axes) to the tree stage (76.6% of variance explained). The basal area of tree species co-occurring with Pinus contorta Doug. ex. Loud declined more gradually than P. contorta basal area declined across ecotones, resulting in less-distinct forest type boundaries. We conclude that broad, gradual ecotones and heterogeneous forest landscapes are created and maintained by: (1) sporadic establishment of seedlings in sub-optimal habitats; (2) survivorship of saplings and mature trees in a wider range of environmental conditions than seedlings presently endure; and (3) the longevity of trees and persistence of tree species in a broad range of soils, climates, and disturbance regimes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Plant Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1023/A:1009788326991","issn":"13850237","usgsCitation":"Stohlgren, T., Bachand, R., Onami, Y., and Binkley, D., 1998, Species-environment relationships and vegetation patterns: Effects of spatial scale and tree life-stage: Plant Ecology, v. 135, no. 2, p. 215-228, https://doi.org/10.1023/A:1009788326991.","startPage":"215","endPage":"228","numberOfPages":"14","costCenters":[],"links":[{"id":206474,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1023/A:1009788326991"},{"id":229911,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"135","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9518e4b08c986b31ad34","contributors":{"authors":[{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":389599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bachand, R.R.","contributorId":82879,"corporation":false,"usgs":true,"family":"Bachand","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":389601,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Onami, Y.","contributorId":10576,"corporation":false,"usgs":true,"family":"Onami","given":"Y.","email":"","affiliations":[],"preferred":false,"id":389600,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Binkley, Dan","contributorId":102419,"corporation":false,"usgs":true,"family":"Binkley","given":"Dan","affiliations":[],"preferred":false,"id":389602,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70019817,"text":"70019817 - 1998 - Preparation and evaluation of coal-derived activated carbons for removal of mercury vapor from simulated coal combustion flue fases","interactions":[],"lastModifiedDate":"2023-12-16T01:06:02.274648","indexId":"70019817","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1513,"text":"Energy and Fuels","active":true,"publicationSubtype":{"id":10}},"title":"Preparation and evaluation of coal-derived activated carbons for removal of mercury vapor from simulated coal combustion flue fases","docAbstract":"Coal-derived activated carbons (CDACs) were tested for their suitability in removing trace amounts of vapor-phase mercury from simulated flue gases generated by coal combustion. CDACs were prepared in bench-scale and pilot-scale fluidized-bed reactors with a three-step process, including coal preoxidation, carbonization, and then steam activation. CDACs from high-organicsulfur Illinois coals had a greater equilibrium Hg0 adsorption capacity than activated carbons prepared from a low-organic-sulfur Illinois coal. When a low-organic-sulfur CDAC was impregnated with elemental sulfur at 600 ??C, its equilibrium Hg0 adsorption capacity was comparable to the adsorption capacity of the activated carbon prepared from the high-organicsulfur coal. X-ray diffraction and sulfur K-edge X-ray absorption near-edge structure examinations showed that the sulfur in the CDACs was mainly in organic forms. These results suggested that a portion of the inherent organic sulfur in the starting coal, which remained in the CDACs, played an important role in adsorption of Hg0. Besides organic sulfur, the BET surface area and micropore area of the CDACs also influenced Hg0 adsorption capacity. The HgCl2 adsorption capacity was not as dependent on the surface area and concentration of sulfur in the CDACs as was adsorption of Hg0. The properties and mercury adsorption capacities of the CDACs were compared with those obtained for commercial Darco FGD carbon.","language":"English","publisher":"American Chemical Society","doi":"10.1021/ef9801064","issn":"08870624","usgsCitation":"Hsi, H.-., Chen, S., Rostam-Abadi, M., Rood, M., Richardson, C.F., Carey, T., and Chang, R., 1998, Preparation and evaluation of coal-derived activated carbons for removal of mercury vapor from simulated coal combustion flue fases: Energy and Fuels, v. 12, no. 6, p. 1061-1070, https://doi.org/10.1021/ef9801064.","productDescription":"10 p.","startPage":"1061","endPage":"1070","numberOfPages":"10","costCenters":[],"links":[{"id":228021,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"6","noUsgsAuthors":false,"publicationDate":"1998-10-09","publicationStatus":"PW","scienceBaseUri":"505a8b19e4b0c8380cd7e177","contributors":{"authors":[{"text":"Hsi, H. -C.","contributorId":82079,"corporation":false,"usgs":true,"family":"Hsi","given":"H.","middleInitial":"-C.","affiliations":[],"preferred":false,"id":384011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chen, S.","contributorId":7856,"corporation":false,"usgs":true,"family":"Chen","given":"S.","affiliations":[],"preferred":false,"id":384006,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rostam-Abadi, M.","contributorId":37061,"corporation":false,"usgs":true,"family":"Rostam-Abadi","given":"M.","affiliations":[],"preferred":false,"id":384010,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rood, M.J.","contributorId":15354,"corporation":false,"usgs":true,"family":"Rood","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":384007,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Richardson, C. F.","contributorId":33862,"corporation":false,"usgs":true,"family":"Richardson","given":"C.","middleInitial":"F.","affiliations":[],"preferred":false,"id":384009,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Carey, T.R.","contributorId":88894,"corporation":false,"usgs":true,"family":"Carey","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":384012,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Chang, R.","contributorId":16175,"corporation":false,"usgs":true,"family":"Chang","given":"R.","email":"","affiliations":[],"preferred":false,"id":384008,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70019816,"text":"70019816 - 1998 - Rates of volcanic CO<sub>2</sub> degassing from airborne determinations of SO<sub>2</sub> Emission rates and plume CO<sub>2</sub>SO<sub>2</sub>: test study at Pu′u ′O′o Cone, Kilauea Volcano, Hawaii","interactions":[],"lastModifiedDate":"2015-05-14T16:18:51","indexId":"70019816","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Rates of volcanic CO<sub>2</sub> degassing from airborne determinations of SO<sub>2</sub> Emission rates and plume CO<sub>2</sub>SO<sub>2</sub>: test study at Pu′u ′O′o Cone, Kilauea Volcano, Hawaii","docAbstract":"<p><span>We present an airborne method that eliminates or minimizes several disadvantages of the customary plume cross-section sampling method for determining volcanic CO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>emission rates. A LI-COR CO</span><sub>2</sub><span>analyzer system (LICOR), a Fourier transform infrared spectrometer system (FTIR), and a correlation spectrometer (COSPEC) were used to constrain the plume CO</span><sub>2</sub><span>/SO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>and the SO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>emission rate. The method yielded a CO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>emission rate of 300 td</span><sup>&minus;1</sup><span><span class=\"Apple-converted-space\">&nbsp;</span>(metric tons per day) for Pu&prime;u &prime;O&prime;o cone, Kilauea volcano, on 19 September 1995. The CO</span><sub>2</sub><span>/SO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>of 0.20 determined from airborne LICOR and FTIR plume measurements agreed with the CO</span><sub>2</sub><span>/SO</span><sub>2</sub><span><span class=\"Apple-converted-space\">&nbsp;</span>of 204 ground-based samples collected from vents over a 14-year period since the Pu&prime;u &prime;O&prime;o eruption began in January 1983.</span></p>","language":"English","publisher":"AGU Publications","doi":"10.1029/98GL02030","issn":"00948276","usgsCitation":"Gerlach, T.M., McGee, K.A., Sutton, A.J., and Elias, T., 1998, Rates of volcanic CO<sub>2</sub> degassing from airborne determinations of SO<sub>2</sub> Emission rates and plume CO<sub>2</sub>SO<sub>2</sub>: test study at Pu′u ′O′o Cone, Kilauea Volcano, Hawaii: Geophysical Research Letters, v. 25, no. 14, p. 2675-2678, https://doi.org/10.1029/98GL02030.","productDescription":"4 p.","startPage":"2675","endPage":"2678","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":479820,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/98gl02030","text":"Publisher Index Page"},{"id":227980,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"14","noUsgsAuthors":false,"publicationDate":"1998-07-15","publicationStatus":"PW","scienceBaseUri":"505a9548e4b0c8380cd81907","contributors":{"authors":[{"text":"Gerlach, Terrence M.","contributorId":30246,"corporation":false,"usgs":true,"family":"Gerlach","given":"Terrence","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":384004,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGee, Kenneth A. kenmcgee@usgs.gov","contributorId":2135,"corporation":false,"usgs":true,"family":"McGee","given":"Kenneth","email":"kenmcgee@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":384002,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sutton, A. Jefferson","contributorId":47860,"corporation":false,"usgs":true,"family":"Sutton","given":"A.","email":"","middleInitial":"Jefferson","affiliations":[],"preferred":false,"id":384003,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elias, Tamar 0000-0002-9592-4518 telias@usgs.gov","orcid":"https://orcid.org/0000-0002-9592-4518","contributorId":3916,"corporation":false,"usgs":true,"family":"Elias","given":"Tamar","email":"telias@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":384005,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70021363,"text":"70021363 - 1998 - Does the Sverdrup critical depth model explain bloom dynamics in estuaries?","interactions":[],"lastModifiedDate":"2019-02-04T08:47:35","indexId":"70021363","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2379,"text":"Journal of Marine Research","active":true,"publicationSubtype":{"id":10}},"title":"Does the Sverdrup critical depth model explain bloom dynamics in estuaries?","docAbstract":"<p>In this paper we use numerical models of coupled biological-hydrodynamic processes to search for general principles of bloom regulation in estuarine waters. We address three questions: what are the dynamics of stratification in coastal systems as influenced by variable freshwater input and tidal stirring? How does phytoplankton growth respond to these dynamics? Can the classical Sverdrup Critical Depth Model (SCDM) be used to predict the timing of bloom events in shallow coastal domains such as estuaries? We present results of simulation experiments which assume that vertical transport and net phytoplankton growth rates are horizontally homogeneous. In the present approach the temporally and spatially varying turbulent diffusivities for various stratification scenarios are calculated using a hydrodynamic code that includes the Mellor-Yamada 2.5 turbulence closure model. These diffusivities are then used in a time- and depth-dependent advection-diffusion equation, incorporating sources and sinks, for the phytoplankton biomass. Our modeling results show that, whereas persistent stratification greatly increases the probability of a bloom, semidiurnal periodic stratification does not increase the likelihood of a phytoplankton bloom over that of a constantly unstratified water column. Thus, for phytoplankton blooms, the physical regime of periodic stratification is closer to complete mixing than to persistent stratification. Furthermore, the details of persistent stratification are important: surface layer depth, thickness of the pycnocline, vertical density difference, and tidal current speed all weigh heavily in producing conditions which promote the onset of phytoplankton blooms. Our model results for shallow tidal systems do not conform to the classical concepts of stratification and blooms in deep pelagic systems. First, earlier studies (Riley, 1942, for example) suggest a monotonic increase in surface layer production as the surface layer shallows. Our model results suggest, however, a nonmonotonic relationship between phytoplankton population growth and surface layer depth, which results from a balance between several 'competing' processes, including the interaction of sinking with turbulent mixing and average net growth occurring within the surface layer. Second, we show that the traditional SCDM must be refined for application to energetic shallow systems or for systems in which surface layer mixing is not strong enough to counteract the sinking loss of phytoplankton. This need for refinement arises because of the leakage of phytoplankton from the surface layer by turbulent diffusion and sinking, processes not considered in the classical SCDM. Our model shows that, even for low sinking rates and small turbulent diffusivities, a significant % of the phytoplankton biomass produced in the surface layer can be lost by these processes.</p>","language":"English","publisher":"Sears Foundation for Marine Research ","doi":"10.1357/002224098321822357","issn":"00222402","usgsCitation":"Lucas, L., Cloern, J., Koseff, J.R., Monismith, S., and Thompson, J., 1998, Does the Sverdrup critical depth model explain bloom dynamics in estuaries?: Journal of Marine Research, v. 56, no. 2, p. 375-415, https://doi.org/10.1357/002224098321822357.","productDescription":"41 p.","startPage":"375","endPage":"415","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":229951,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"56","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a039ae4b0c8380cd50575","contributors":{"authors":[{"text":"Lucas, L.V.","contributorId":62777,"corporation":false,"usgs":true,"family":"Lucas","given":"L.V.","email":"","affiliations":[],"preferred":false,"id":389608,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cloern, J. E.","contributorId":59453,"corporation":false,"usgs":true,"family":"Cloern","given":"J. E.","affiliations":[],"preferred":false,"id":389607,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koseff, Jeffrey R.","contributorId":37915,"corporation":false,"usgs":false,"family":"Koseff","given":"Jeffrey","email":"","middleInitial":"R.","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":389605,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Monismith, Stephen G.","contributorId":57228,"corporation":false,"usgs":true,"family":"Monismith","given":"Stephen G.","affiliations":[],"preferred":false,"id":389606,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Thompson, J.K.","contributorId":103300,"corporation":false,"usgs":true,"family":"Thompson","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":389609,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70184477,"text":"70184477 - 1998 - Marbled murrelets <i>have</i> declined in Alaska","interactions":[],"lastModifiedDate":"2017-03-10T11:33:34","indexId":"70184477","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2900,"text":"Northwest Science","onlineIssn":"2161-9859","printIssn":"0029-344X","active":true,"publicationSubtype":{"id":10}},"title":"Marbled murrelets <i>have</i> declined in Alaska","docAbstract":"<p>In the last issue of <i>Northwest Science</i>, Hayward and Iverson (“Long-Term Trends in Marbled Murrelets in Southeast Alaska Based on Christmas Bird Counts”) failed to mention other evidence for 40-75% declines in murrelet populations, or discuss implications of a climate regime shift that has reduced populations of seabirds in Alaska, or present any useful information on the status of old-growth breeding habitat for murrelets. They examined Christmas Bird Count (CBC) data from Southeast Alaska, and concluded that there is no evidence for declines in populations. They suggested that our (Piatt and Naslund 1995) previous analysis of CBC data for murrelets was erroneous, and suggested that “<i>the disparity between our conclusions… invites explanation</i>”.</p><p>Invitation accepted. In the following, I will show that there was no disparity in conclusions, that Hayward and Iverson mis-represented our conclusions and they conducted a highly selective review of evidence for murrelet population changes in Alaska. The result was a paper that was inaccurate, incomplete, out-of-date, mis-leading and of little service to the readers of <i>Northwest Science</i> who might have read the article hoping to gain some new insight on the status of marbled murrelets in Alaska.</p>","language":"English","publisher":"Northwest Science Association","usgsCitation":"Piatt, J.F., 1998, Marbled murrelets <i>have</i> declined in Alaska: Northwest Science, v. 72, no. 4, p. 310-314.","productDescription":"5 p.","startPage":"310","endPage":"314","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337293,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337284,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.northwestscience.org/page-937324","text":"Journal's Website"}],"country":"United States","state":"Alaska","volume":"72","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c947e4b0f37a93ee9b71","contributors":{"authors":[{"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":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":681649,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70021161,"text":"70021161 - 1998 - Chemistry, isotopic composition, and origin of a methane-hydrogen sulfide hydrate at the Cascadia subduction zone","interactions":[],"lastModifiedDate":"2023-12-08T12:14:22.848032","indexId":"70021161","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Chemistry, isotopic composition, and origin of a methane-hydrogen sulfide hydrate at the Cascadia subduction zone","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif text-s\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id4\"><p>Although the presence of extensive gas hydrate on the Cascadia margin, offshore from the western U.S. and Canada, has been inferred from marine seismic records and pore water chemistry, solid gas hydrate has only been found at one location. At Ocean Drilling Program (ODP) Site 892, offshore from central Oregon, gas hydrate was recovered close to the sediment-water interface at 2–19 m below the seafloor (mbsf) at 670 m water depth. The gas hydrate occurs as elongated platy crystals or crystal aggregates, mostly disseminated irregularly, with higher concentrations occurring in discrete zones, thin layers, and/or veinlets parallel or oblique to the bedding. A 2- to 3-cm thick massive gas hydrate layer, parallel to bedding, was recovered at ∼ 17 mbsf. Gas from a sample of this layer was composed of both CH<sub>4</sub><span>&nbsp;</span>and H<sub>2</sub>S. This sample is the first mixed-gas hydrate of CH<sub>4</sub><img src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" alt=\"single bond\" data-mce-src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\">H<sub>2</sub>S documented in ODP; it also contains ethane and minor amounts of CO<sub>2</sub>. Measured temperatures of the recovered core ranged from 2 to −1.8°C and are 6 to 8 degrees lower than in-situ temperatures. These temperature anomalies were caused by the partial dissociation of the CH<sub>4</sub><img src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" alt=\"single bond\" data-mce-src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\">H<sub>2</sub>S hydrate during recovery without a pressure core sampler.During this dissociation, toxic levels of H<sub>2</sub>S (δ<sup>34</sup>S, +27.4‰) were released. The δ<sup>13</sup>C values of the CH<sub>4</sub><span>&nbsp;</span>in the gas hydrate, −64.5 to −67.5‰<sub>(PDB)</sub>, together with δD values of −197 to −199‰<sub>(SMOW)</sub><span>&nbsp;</span>indicate a primarily microbial source for the CH<sub>4</sub>. The δ<sup>18</sup>O value of the hydrate H<sub>2</sub>O is +2.9‰<sub>(SMOW)</sub>, comparable with the experimental fractionation factor for sea-ice. The unusual composition (CH<sub>4</sub><img src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" alt=\"single bond\" data-mce-src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\">H<sub>2</sub>S) and depth distribution (2–19 mbsf) of this gas hydrate indicate mixing between a methane-rich fluid with a pore fluid enriched in sulfide; at this site the former is advecting along an inclined fault into the active sulfate reduction zone. The facts that the CH<sub>4</sub><img src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" alt=\"single bond\" data-mce-src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\">H<sub>2</sub>S hydrate is primarily confined to the present day active sulfate reduction zone (2–19 mbsf), and that from here down to the BSR depth (19–68 mbsf) the gas hydrate inferred to exist is a ≥99% CH<sub>4</sub><span>&nbsp;</span>hydrate, suggest that the mixing of CH<sub>4</sub><span>&nbsp;</span>and H<sub>2</sub>S is a geologically young process. Because the existence of a mixed CH<sub>4</sub><img src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" alt=\"single bond\" data-mce-src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\">H<sub>2</sub>S hydrate is indicative of moderate to intense advection of a methane-rich fluid into a near surface active sulfate reduction zone, tectonically active (faulted) margins with organic-rich sediments and moderate to high sedimentation rates are the most likely regions of occurrence. The extension of such a mixed hydrate below the sulfate reduction zone should reflect the time-span of methane advection into the sulfate reduction zone.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/S0012-821X(98)00013-2","issn":"0012821X","usgsCitation":"Kastner, M., Kvenvolden, K., and Lorenson, T., 1998, Chemistry, isotopic composition, and origin of a methane-hydrogen sulfide hydrate at the Cascadia subduction zone: Earth and Planetary Science Letters, v. 156, no. 3-4, p. 173-183, https://doi.org/10.1016/S0012-821X(98)00013-2.","productDescription":"11 p.","startPage":"173","endPage":"183","numberOfPages":"11","costCenters":[],"links":[{"id":229738,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -131.2919896212175,\n              50.27292720932644\n            ],\n            [\n              -131.2919896212175,\n              42.07916277343969\n            ],\n            [\n              -122.72265368371768,\n              42.07916277343969\n            ],\n            [\n              -122.72265368371768,\n              50.27292720932644\n            ],\n            [\n              -131.2919896212175,\n              50.27292720932644\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"156","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5b0e4b0c8380cd4c378","contributors":{"authors":[{"text":"Kastner, M.","contributorId":21276,"corporation":false,"usgs":true,"family":"Kastner","given":"M.","email":"","affiliations":[],"preferred":false,"id":388840,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kvenvolden, K.A.","contributorId":80674,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":388841,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lorenson, T.D.","contributorId":7715,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":388839,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70021160,"text":"70021160 - 1998 - Tectonic setting of synorogenic gold deposits of the Pacific Rim","interactions":[],"lastModifiedDate":"2012-03-12T17:19:40","indexId":"70021160","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2954,"text":"Ore Geology Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Tectonic setting of synorogenic gold deposits of the Pacific Rim","docAbstract":"More than 420 million oz of gold were concentrated in circum-Pacific synorogenic quartz loades mainly during two periods of continental growth, one along the Gondwanan margin in the Palaeozoic and the other in the northern Pacific basin between 170 and 50 Ma. These ores have many features in common and can be grouped into a single type of lode gold deposit widespread throughout clastic sedimentary-rock dominant terranes. The auriferous veins contain only a few percent sulphide minerals, have gold:silver ratios typically greater than 1:1, show a distinct association with medium grade metamorphic rocks, and may be associated with large-scale fault zone. Ore fluids are consistently of low salinity and are CO2-rich. In the early and middle Palaeozoic in the southern Pacific basin, a single immense turbidite sequence was added to the eastern margin of Gondwanaland. Deformation of these rocks in southeastern Australia was accompanied by deposition of at least 80 million oz of gold in the Victorian sector of the Lachlan fold belt mainly during the Middle and Late Devonian. Lesser Devonian gold accumulations characterized the more northerly parts of the Gondwanan margin within the Hodgkinson-Broken River and Thomson fold belts. Additional lodes were emplaced in this flyschoid sequence in Devonian or earlier Palaeozoic times in what is now the Buller Terrane, Westland, New Zealand. Minor post-Devonian growth of Gondwanaland included terrane collision and formation of gold-bearing veins in the Permian in Australia's New England fold belt and in the Jurassic-Early Cretaceous in New Zealand's Otago schists. Collision and accretion of dozens of terranes for a 100-m.y.-long period against the western margin of North America and eastern margin of Eurasia led to widespread, lattest Jurassic to Eocene gold veining in the northern Pacific basin. In the former location, Late Jurassic and Early Cretaceous veins and related placer deposits along the western margin of the Sierra Nevada batholith have yielded more than 100 million oz of gold. Additional significant ore-forming events during the development of North America's Cordilleran orogen included those in the Klamath Mountains region, California in the Late Jurassic and Early Cretaceous; the Klondike district, Yukon by the Early Cretaceous; the Nome and Fairbanks districts, Alaska, and the Bridge River district, British Columbia in the middle Cretaceous; and the Juneau gold belt, Alaska in the Eocene. Gold-bearing veins deposited during the Late Jurassic and Early Cretaceous terrane collision that formed the present-day Russian Far East have been the source for more than 130 million oz of placer gold. The abundance of gold-bearing quartz-carbonate veins throughout the Gondwanan, North American and Eurasian continental margins suggests the migration and concentration of large fluid volumes during continental growth. Such volumes could be released during orogenic heating of hydrous silicate mineral phases within accreted marine strata. The common temporal association between gold veining and magmatism around the Pacific Rim reflects these thermal episodes. Melting of the lower thickened crust during arc formation, slab rollback and extensional tectonism, and subduction of a slab window beneath the seaward part of the forearc region can all provide the required heat for initation of the ore-forming processes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ore Geology Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0169-1368(97)00018-8","issn":"01691368","usgsCitation":"Goldfarb, R., Phillips, G., and Nokleberg, W., 1998, Tectonic setting of synorogenic gold deposits of the Pacific Rim: Ore Geology Reviews, v. 13, no. 1-5, p. 185-218, https://doi.org/10.1016/S0169-1368(97)00018-8.","startPage":"185","endPage":"218","numberOfPages":"34","costCenters":[],"links":[{"id":206422,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0169-1368(97)00018-8"},{"id":229699,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"1-5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba47be4b08c986b32037d","contributors":{"authors":[{"text":"Goldfarb, R.J.","contributorId":38143,"corporation":false,"usgs":true,"family":"Goldfarb","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":388836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, G.N.","contributorId":96439,"corporation":false,"usgs":true,"family":"Phillips","given":"G.N.","email":"","affiliations":[],"preferred":false,"id":388838,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nokleberg, W. J. 0000-0002-1574-8869","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":68312,"corporation":false,"usgs":true,"family":"Nokleberg","given":"W. J.","affiliations":[],"preferred":false,"id":388837,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70021159,"text":"70021159 - 1998 - Seasonal and spatial patterns of nitrate and silica concentrations in Canajoharie Creek, New York","interactions":[],"lastModifiedDate":"2024-03-29T11:16:27.636396","indexId":"70021159","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Seasonal and spatial patterns of nitrate and silica concentrations in Canajoharie Creek, New York","docAbstract":"<div class=\" metis-abstract\"><div class=\"article-section__content en main\"><p>The impact of nonpoint-source pollution on surface waters in agricultural watersheds is an emerging environmental issue. As part of the U.S. Geological Survey National Water Quality Assessment program in the Hudson River Basin, Canajoharie Creek was monitored for seasonal and spatial patterns of nutrient chemistry from March 1993 to January 1996. Nitrate and silica concentrations in Canajoharie Creek suggest that seasonal and spatial variations of these nutrients are dominated by biological processes, particularly uptake by phytoplankton. Observed concentration patterns were more typical of those observed in much larger, low-gradient streams. The median nitrate and silica concentrations in Canajoharie Creek were significantly lower from April through November than during winter. Concentrations of both constituents declined downstream from the headwaters during base-flow conditions in June 1995. Groundwater and surface water chemistry data support biological causes for downstream decreases in silica. The strong correlation between nitrate and silica in samples collected along the mainstem suggests that most of the nitrate decrease is due to uptake by diatoms. Downstream patterns of chlorophyll-a in phytoplankton strongly suggest the conversion of in-stream nutrients to algal biomass. Data collected from Canajoharie Creek outlet during the northeast drought of 1995 indicate that silica concentrations in May had possibly declined to a level that adversely affected the diatom community. This decline in the diatom population and subsequent resurgence is inferred from a sharp rise in silica concentrations between May and July and a reversal of this trend from mid-July through October without associated changes in hydrology.</p></div></div>","language":"English","publisher":"Wiley","doi":"10.2134/jeq1998.00472425002700020019x","issn":"00472425","usgsCitation":"Wall, G.R., Phillips, P.J., and Riva-Murray, K., 1998, Seasonal and spatial patterns of nitrate and silica concentrations in Canajoharie Creek, New York: Journal of Environmental Quality, v. 27, no. 2, p. 381-389, https://doi.org/10.2134/jeq1998.00472425002700020019x.","productDescription":"9 p.","startPage":"381","endPage":"389","numberOfPages":"9","costCenters":[],"links":[{"id":229661,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8878e4b08c986b3169b5","contributors":{"authors":[{"text":"Wall, G. R.","contributorId":93652,"corporation":false,"usgs":true,"family":"Wall","given":"G.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":388835,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, P. J.","contributorId":31728,"corporation":false,"usgs":true,"family":"Phillips","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":388833,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Riva-Murray, K.","contributorId":82481,"corporation":false,"usgs":true,"family":"Riva-Murray","given":"K.","affiliations":[],"preferred":false,"id":388834,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70021366,"text":"70021366 - 1998 - Riparian zones as havens for exotic plant species in the central grasslands","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70021366","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Riparian zones as havens for exotic plant species in the central grasslands","docAbstract":"In the Central Grasslands of the United States, we hypothesized that riparian zones high in soil fertility would contain more exotic plant species than upland areas of low soil fertility. Our alternate hypothesis was that riparian zones high in native plant species richness and cover would monopolize available resources and resist invasion by exotic species. We gathered nested-scale vegetation data from 40 1 m2subplots (nested in four 1000 m2 plots) in both riparian and upland sites at four study areas in Colorado, Wyoming, and South Dakota (a total of 320 1 m2subplots and 32 1000 m2 plots). At the 1 m2 scale, mean foliar cover of native species was significantly greater (P < 0.001) in riparian zones (36.6% ?? 1.7%) compared to upland sites (28.7% ?? 1.5%), but at this small scale there were no consistent patterns of native and exotic species richness among the four management areas. Mean exotic species cover was slightly higher in upland sites compared to riparian sites (9.0% ?? 3.8% versus 8.2% ?? 3.0% cover). However, mean exotic species richness and cover were greater in the riparian zones than upland sites in three of four management areas. At the 1000 m2 scale, mean exotic species richness was also significantly greater (P < 0.05) in riparian zones (7.8 ?? 1.0 species) compared to upland sites (4.8 ?? 1.0 species) despite the heavy invasion of one upland site. For all 32 plots combined, 21% of the variance in exotic species richness was explained by positive relationships with soil % silt (t = 1.7, P = 0.09) and total foliar cover (t = 2.4, P = 0.02). Likewise, 26% of the variance in exotic species cover (log10 cover) was explained by positive relationships with soil % silt (t = 2.3, P = 0.03) and total plant species richness (t = 2.4, P = 0.02). At landscape scales (four 1000 m2 plots per type combined), total foliar cover was significantly and positively correlated with exotic species richness (r = 0.73, P < 0.05) and cover (r = 0.74, P < 0.05). Exotic species cover (log10 cover) was positively correlated with log10% N in the soil (r = 0.61, P = 0.11) at landscape scales. On average, we found that 85% (??5%) of the total number of exotic species in the sampling plots of a given management area could be found in riparian zones, while only 50% (??8%) were found in upland plots. We conclude that: (1 species-rich and productive riparian zones are particularly invasible in grassland ecosystems; and (2) riparian zones may act as havens, corridors, and sources of exotic plant invasions for upland sites and pose a significant challenge to land managers and conservation biologists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Plant Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1023/A:1009764909413","issn":"13850237","usgsCitation":"Stohlgren, T., Bull, K., Otsuki, Y., Villa, C., and Lee, M., 1998, Riparian zones as havens for exotic plant species in the central grasslands: Plant Ecology, v. 138, no. 1, p. 113-125, https://doi.org/10.1023/A:1009764909413.","startPage":"113","endPage":"125","numberOfPages":"13","costCenters":[],"links":[{"id":230030,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":206501,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1023/A:1009764909413"}],"volume":"138","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aad83e4b0c8380cd86efd","contributors":{"authors":[{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":389615,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bull, K.A.","contributorId":60166,"corporation":false,"usgs":true,"family":"Bull","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":389618,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Otsuki, Yuka","contributorId":23107,"corporation":false,"usgs":false,"family":"Otsuki","given":"Yuka","email":"","affiliations":[],"preferred":false,"id":389616,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Villa, C.A.","contributorId":87097,"corporation":false,"usgs":true,"family":"Villa","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":389619,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lee, M.","contributorId":32484,"corporation":false,"usgs":true,"family":"Lee","given":"M.","affiliations":[],"preferred":false,"id":389617,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":7000001,"text":"7000001 - 1998 - Building stones of our Nation's Capital","interactions":[],"lastModifiedDate":"2012-02-02T00:04:52","indexId":"7000001","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":363,"text":"General Interest Publication","active":false,"publicationSubtype":{"id":6}},"title":"Building stones of our Nation's Capital","language":"ENGLISH","doi":"10.3133/7000001","usgsCitation":"Withington, C., 1998, Building stones of our Nation's Capital (Online Version 1.0): General Interest Publication, 36 p. : col. ill., col. map ; 24 cm., https://doi.org/10.3133/7000001.","productDescription":"36 p. : col. ill., col. map ; 24 cm.","costCenters":[],"links":[{"id":134999,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":18576,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/gip/stones/","linkFileType":{"id":5,"text":"html"}}],"edition":"Online Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a08e4b07f02db5fa33c","contributors":{"authors":[{"text":"Withington, Charles F.","contributorId":6424,"corporation":false,"usgs":true,"family":"Withington","given":"Charles F.","affiliations":[],"preferred":false,"id":343944,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":7000020,"text":"7000020 - 1998 - Glimpses of the Ice Age from I-81: Lee Ranger District","interactions":[],"lastModifiedDate":"2015-06-04T08:46:50","indexId":"7000020","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":363,"text":"General Interest Publication","active":false,"publicationSubtype":{"id":6}},"subseriesTitle":"Geologic wonders of the George Washington and Jefferson National Forests, No. 1","title":"Glimpses of the Ice Age from I-81: Lee Ranger District","docAbstract":"<p><span>Travelers on Interstate Highway 81 can see remnants of the Ice Age on the mountains between Strasburg and Harrisonburg, Virginia. Scattered along the miles of green, forested mountains are many gray patches without any forests. These treeless patches, or openings, in the steep mountain forests are block fields - geologic features that owe their origin to the Ice Age.</span></p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/7000020","usgsCitation":"Water Resources Division, U.S. Geological Survey, and U.S. Forest Service, 1998, Glimpses of the Ice Age from I-81: Lee Ranger District: General Interest Publication, Pamphlet: 4 p., https://doi.org/10.3133/7000020.","productDescription":"Pamphlet: 4 p.","numberOfPages":"4","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":300867,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/7000020.jpg"},{"id":300859,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gip/i81/i81.pdf","text":"report","size":"172 K","linkFileType":{"id":1,"text":"pdf"},"description":"report"},{"id":18592,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/gip/i81/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Virginia","otherGeospatial":"Passage Creek, Woodstock Tower","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -78.30986022949217,\n              38.94125285438687\n            ],\n            [\n              -78.30986022949217,\n              38.966382907015735\n            ],\n            [\n              -78.28707218170166,\n              38.966382907015735\n            ],\n            [\n              -78.28707218170166,\n              38.94125285438687\n            ],\n            [\n              -78.30986022949217,\n              38.94125285438687\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -78.5059404373169,\n              38.87189044926606\n            ],\n            [\n              -78.5059404373169,\n              38.88224734948839\n            ],\n            [\n              -78.46392631530762,\n              38.88224734948839\n            ],\n            [\n              -78.46392631530762,\n              38.87189044926606\n            ],\n            [\n              -78.5059404373169,\n              38.87189044926606\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abee4b07f02db674dfa","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":547770,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"U.S. Forest Service","contributorId":128067,"corporation":true,"usgs":false,"organization":"U.S. Forest Service","id":547771,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70021386,"text":"70021386 - 1998 - Assessing map accuracy in a remotely sensed, ecoregion-scale cover map","interactions":[],"lastModifiedDate":"2012-03-12T17:19:41","indexId":"70021386","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Assessing map accuracy in a remotely sensed, ecoregion-scale cover map","docAbstract":"Landscape- and ecoregion-based conservation efforts increasingly use a spatial component to organize data for analysis and interpretation. A challenge particular to remotely sensed cover maps generated from these efforts is how best to assess the accuracy of the cover maps, especially when they can exceed 1000 s/km2 in size. Here we develop and describe a methodological approach for assessing the accuracy of large-area cover maps, using as a test case the 21.9 million ha cover map developed for Utah Gap Analysis. As part of our design process, we first reviewed the effect of intracluster correlation and a simple cost function on the relative efficiency of cluster sample designs to simple random designs. Our design ultimately combined clustered and subsampled field data stratified by ecological modeling unit and accessibility (hereafter a mixed design). We next outline estimation formulas for simple map accuracy measures under our mixed design and report results for eight major cover types and the three ecoregions mapped as part of the Utah Gap Analysis. Overall accuracy of the map was 83.2% (SE=1.4). Within ecoregions, accuracy ranged from 78.9% to 85.0%. Accuracy by cover type varied, ranging from a low of 50.4% for barren to a high of 90.6% for man modified. In addition, we examined gains in efficiency of our mixed design compared with a simple random sample approach. In regard to precision, our mixed design was more precise than a simple random design, given fixed sample costs. We close with a discussion of the logistical constraints facing attempts to assess the accuracy of large-area, remotely sensed cover maps.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing of Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Science Inc","publisherLocation":"New York, NY, United States","doi":"10.1016/S0034-4257(96)00246-5","issn":"00344257","usgsCitation":"Edwards, T., Moisen, G.G., and Cutler, D., 1998, Assessing map accuracy in a remotely sensed, ecoregion-scale cover map: Remote Sensing of Environment, v. 63, no. 1, p. 73-83, https://doi.org/10.1016/S0034-4257(96)00246-5.","startPage":"73","endPage":"83","numberOfPages":"11","costCenters":[],"links":[{"id":206416,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0034-4257(96)00246-5"},{"id":229673,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eddae4b0c8380cd49a5d","contributors":{"authors":[{"text":"Edwards, T.C. Jr. 0000-0002-0773-0909","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":76486,"corporation":false,"usgs":true,"family":"Edwards","given":"T.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":389692,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moisen, Gretchen G.","contributorId":15781,"corporation":false,"usgs":false,"family":"Moisen","given":"Gretchen","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":389691,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cutler, D.R.","contributorId":89684,"corporation":false,"usgs":true,"family":"Cutler","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":389693,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70021399,"text":"70021399 - 1998 - Ichnology of an Upper Carboniferous fluvio-estuarine paleovalley: The Tonganoxie Sandstone, Buildex Quarry, Eastern Kansas, USA","interactions":[],"lastModifiedDate":"2024-06-04T21:42:34.299879","indexId":"70021399","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2412,"text":"Journal of Paleontology","active":true,"publicationSubtype":{"id":10}},"title":"Ichnology of an Upper Carboniferous fluvio-estuarine paleovalley: The Tonganoxie Sandstone, Buildex Quarry, Eastern Kansas, USA","docAbstract":"<p>Tidal rhythmites of the Tonganoxie Sandstone Member (Stranger Formation, Douglas Group) at Buildex Quarry, eastern Kansas, contain a relatively diverse ichnofauna. The assemblage includes arthropod locomotion (<span class=\"italic\">Dendroidichnites irregulare, Diplichnites gouldi</span><span>&nbsp;</span>types A and B,<span>&nbsp;</span><span class=\"italic\">Diplopodichnus biformis, Kouphichnium</span><span>&nbsp;</span>isp.,<span>&nbsp;</span><span class=\"italic\">Mirandaichnium famatinense</span>, and<span>&nbsp;</span><span class=\"italic\">Stiaria intermedia</span>), resting (<span class=\"italic\">Tonganoxichnus buildexensis</span>) and feeding traces (<span class=\"italic\">Stiallia pilosa, Tonganoxichnus ottawensis</span>); grazing traces (<span class=\"italic\">Gordia indianaensis, Helminthoidichnites tenuis, Helminthopsis hieroglyphica</span>); feeding structures (<span class=\"italic\">Circulichnis montanus, Treptichnus bifurcus, Treptichnus pollardi</span>, irregular networks), fish traces (<span class=\"italic\">Undichna britannica, Undichna simplicitas</span>), tetrapod trackways, and root traces. The taxonomy of some of these ichnotaxa is briefly reviewed and emended diagnoses for<span>&nbsp;</span><span class=\"italic\">Gordia indianaensis</span><span>&nbsp;</span>and<span>&nbsp;</span><span class=\"italic\">Helminthoidichnites tenuis</span><span>&nbsp;</span>are proposed. Additionally, the combined name<span>&nbsp;</span><span class=\"italic\">Dendroidichnites irregulare</span><span>&nbsp;</span>is proposed for nested chevron trackways. Traces previously regarded as produced by isopods are reinterpreted as myriapod trackways (<span class=\"italic\">D. gouldi</span><span>&nbsp;</span>type B). Trackways formerly interpreted as limulid crawling and swimming traces are assigned herein to<span>&nbsp;</span><span class=\"italic\">Kouphichnium</span><span>&nbsp;</span>isp and<span>&nbsp;</span><span class=\"italic\">Dendroidichnites irregulare</span>, respectively.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1017/S0022336000024094","issn":"00223360","usgsCitation":"Buatois, L., Mangano, M., Maples, C., and Lanier, W.E., 1998, Ichnology of an Upper Carboniferous fluvio-estuarine paleovalley: The Tonganoxie Sandstone, Buildex Quarry, Eastern Kansas, USA: Journal of Paleontology, v. 72, no. 1, p. 157-180, https://doi.org/10.1017/S0022336000024094.","productDescription":"24 p.","startPage":"157","endPage":"180","numberOfPages":"24","costCenters":[],"links":[{"id":229870,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"1","noUsgsAuthors":false,"publicationDate":"2016-05-20","publicationStatus":"PW","scienceBaseUri":"505a37ffe4b0c8380cd6135e","contributors":{"authors":[{"text":"Buatois, L.A.","contributorId":40740,"corporation":false,"usgs":true,"family":"Buatois","given":"L.A.","affiliations":[],"preferred":false,"id":389736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mangano, M.G.","contributorId":7432,"corporation":false,"usgs":true,"family":"Mangano","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":389734,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maples, C.G.","contributorId":7425,"corporation":false,"usgs":true,"family":"Maples","given":"C.G.","email":"","affiliations":[],"preferred":false,"id":389733,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lanier, Wendy E.","contributorId":9013,"corporation":false,"usgs":true,"family":"Lanier","given":"Wendy","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":389735,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70021398,"text":"70021398 - 1998 - Evidence for Proterozoic and late Cretaceous-early Tertiary ore-forming events in the Coeur d'Alene district, Idaho and Montana","interactions":[],"lastModifiedDate":"2024-01-03T15:48:42.240888","indexId":"70021398","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for Proterozoic and late Cretaceous-early Tertiary ore-forming events in the Coeur d'Alene district, Idaho and Montana","docAbstract":"<p><span>New&nbsp;</span><sup>40</sup><span>&nbsp;Ar/&nbsp;</span><sup>39</sup><span>&nbsp;Ar age spectra on sericite and lead isotope data on tetrahedrite, siderite, galena, bournonite, and stibnite, together with previously published isotopic, geochemical, and geologic studies provide evidence for two major vein-forming events in the Coeur d'Alene district and surrounding areas of the Belt basin. The data suggest that the zinc- and lead-rich veins (e.g., Bunker Hill and Star-Morning mines) formed in the Proterozoic (1.0 Ga), whereas the silver-rich veins (e.g., Silver belt mines), antimony veins (e.g., U.S. Antimony mine), and gold-bearing quartz veins (Murry subdistrict) formed in Late Cretaceous to early Tetitary time.</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.93.3.347","issn":"03610128","usgsCitation":"Leach, D.L., Hofstra, A., Church, S.E., Snee, L., Vaughn, R.B., and Zartman, R., 1998, Evidence for Proterozoic and late Cretaceous-early Tertiary ore-forming events in the Coeur d'Alene district, Idaho and Montana: Economic Geology, v. 93, no. 3, p. 347-359, https://doi.org/10.2113/gsecongeo.93.3.347.","productDescription":"13 p.","startPage":"347","endPage":"359","numberOfPages":"13","costCenters":[],"links":[{"id":229869,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","issue":"3","noUsgsAuthors":false,"publicationDate":"1998-05-01","publicationStatus":"PW","scienceBaseUri":"505a0d2ce4b0c8380cd52e5f","contributors":{"authors":[{"text":"Leach, D. L.","contributorId":18758,"corporation":false,"usgs":true,"family":"Leach","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":389728,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hofstra, A. H. 0000-0002-2450-1593","orcid":"https://orcid.org/0000-0002-2450-1593","contributorId":41426,"corporation":false,"usgs":true,"family":"Hofstra","given":"A. H.","affiliations":[],"preferred":false,"id":389730,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Church, S. E.","contributorId":58260,"corporation":false,"usgs":true,"family":"Church","given":"S.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":389731,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Snee, L.W.","contributorId":99981,"corporation":false,"usgs":true,"family":"Snee","given":"L.W.","email":"","affiliations":[],"preferred":false,"id":389732,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vaughn, R. B.","contributorId":27043,"corporation":false,"usgs":true,"family":"Vaughn","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":389729,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zartman, R. E.","contributorId":15632,"corporation":false,"usgs":true,"family":"Zartman","given":"R. E.","affiliations":[],"preferred":false,"id":389727,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70021391,"text":"70021391 - 1998 - Herbivore effects on plant species density at varying productivity levels","interactions":[],"lastModifiedDate":"2019-10-24T13:08:29","indexId":"70021391","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Herbivore effects on plant species density at varying productivity levels","docAbstract":"Artificially increasing primary productivity decreases plant species richness in many habitats; herbivory may affect this outcome, but it has rarely been directly addressed in fertilization studies. This experiment was conducted in two Louisiana coastal marshes to examine the effects of nutrient enrichment and sediment addition on herbaceous plant communities with and without vertebrate herbivory. After three growing seasons, fertilization increased community biomass in all plots, but decreased species density (the number of species per unit area) only in plots protected from herbivory. Herbivory alone did not alter species density at either site. At the brackish marsh, herbivory caused a shift in dominance in the fertilized plots from a species that is considered the competitive dominant, but is selectively eaten, to another less palatable species. At the fresh marsh, increased dead biomass in the absence of herbivory and in the fertilized plots probably contributed to the decrease in species density, perhaps by limiting germination of annuals. Our results support those of other fertilization studies in which plant species density decreases with increased biomass, but only in those plots protected from herbivory.","language":"English","publisher":"Ecological Society of America","doi":"10.1890/0012-9658(1998)079[1586:HEOPSD]2.0.CO;2","issn":"00129658","usgsCitation":"Gough, L., and Grace, J., 1998, Herbivore effects on plant species density at varying productivity levels: Ecology, v. 79, no. 5, p. 1586-1594, https://doi.org/10.1890/0012-9658(1998)079[1586:HEOPSD]2.0.CO;2.","productDescription":"9 p.","startPage":"1586","endPage":"1594","numberOfPages":"9","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":229716,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Pearl River Basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -89.77752685546875,\n              30.135626231134587\n            ],\n            [\n              -89.53033447265625,\n              30.135626231134587\n            ],\n            [\n              -89.53033447265625,\n              30.44748978060767\n            ],\n            [\n              -89.77752685546875,\n              30.44748978060767\n            ],\n            [\n              -89.77752685546875,\n              30.135626231134587\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"79","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3073e4b0c8380cd5d661","contributors":{"authors":[{"text":"Gough, L.","contributorId":53971,"corporation":false,"usgs":true,"family":"Gough","given":"L.","affiliations":[],"preferred":false,"id":389703,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":389702,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70021392,"text":"70021392 - 1998 - Operational modeling system with dynamic-wave routing","interactions":[],"lastModifiedDate":"2012-03-12T17:19:41","indexId":"70021392","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Operational modeling system with dynamic-wave routing","docAbstract":"A near real-time streamflow-simulation system utilizing continuous-simulation rainfall-runoff generation with dynamic-wave routing is being developed by the U.S. Geological Survey in cooperation with the Du Page County Department of Environmental Concerns for a 24-kilometer reach of Salt Creek in Du Page County, Illinois. This system is needed in order to more effectively manage the Elmhurst Quarry Flood Control Facility, an off-line stormwater diversion reservoir located along Salt Creek. Near real time simulation capabilities will enable the testing and evaluation of potential rainfall, diversion, and return-flow scenarios on water-surface elevations along Salt Creek before implementing diversions or return-flows. The climatological inputs for the continuous-simulation rainfall-runoff model, Hydrologic Simulation Program - FORTRAN (HSPF) are obtained by Internet access and from a network of radio-telemetered precipitation gages reporting to a base-station computer. The unit area runoff time series generated from HSPF are the input for the dynamic-wave routing model. Full Equations (FEQ). The Generation and Analysis of Model Simulation Scenarios (GENSCN) interface is used as a pre- and post-processor for managing input data and displaying and managing simulation results. The GENSCN interface includes a variety of graphical and analytical tools for evaluation and quick visualization of the results of operational scenario simulations and thereby makes it possible to obtain the full benefit of the fully distributed dynamic routing results.","largerWorkTitle":"Proceedings of the Annual Water Resources Planning and Management Conference","conferenceTitle":"Proceedings of the 1998 25th Annual Conference on Water Resources Planning and Management","conferenceDate":"7 June 1998 through 10 June 1998","conferenceLocation":"Chicago, IL, USA","language":"English","publisher":"ASCE","publisherLocation":"Reston, VA, United States","usgsCitation":"Ishii, A.L., Charlton, T., Ortel, T., and Vonnahme, C., 1998, Operational modeling system with dynamic-wave routing, <i>in</i> Proceedings of the Annual Water Resources Planning and Management Conference, Chicago, IL, USA, 7 June 1998 through 10 June 1998, p. 147-152.","startPage":"147","endPage":"152","numberOfPages":"6","costCenters":[],"links":[{"id":229752,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6e92e4b0c8380cd756e4","contributors":{"editors":[{"text":"Loucks E","contributorId":128438,"corporation":true,"usgs":false,"organization":"Loucks E","id":536472,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Ishii, A. L.","contributorId":61464,"corporation":false,"usgs":true,"family":"Ishii","given":"A.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":389705,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Charlton, T.J.","contributorId":64831,"corporation":false,"usgs":true,"family":"Charlton","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":389706,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ortel, T.W.","contributorId":102224,"corporation":false,"usgs":true,"family":"Ortel","given":"T.W.","affiliations":[],"preferred":false,"id":389707,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vonnahme, C.C.","contributorId":37100,"corporation":false,"usgs":true,"family":"Vonnahme","given":"C.C.","email":"","affiliations":[],"preferred":false,"id":389704,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":32334,"text":"ofr98135 - 1998 - Geology of Akutan Island, Alaska","interactions":[],"lastModifiedDate":"2022-10-03T20:46:30.445511","indexId":"ofr98135","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"98-135","title":"Geology of Akutan Island, Alaska","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr98135","usgsCitation":"Richter, D.H., Waythomas, C.F., McGimsey, R.G., and Stelling, P.L., 1998, Geology of Akutan Island, Alaska: U.S. Geological Survey Open-File Report 98-135, Report: 22 p.; 1 Plate: 45.0 x 36.0 inches, https://doi.org/10.3133/ofr98135.","productDescription":"Report: 22 p.; 1 Plate: 45.0 x 36.0 inches","costCenters":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true}],"links":[{"id":109014,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19102.htm","linkFileType":{"id":5,"text":"html"}},{"id":395979,"rank":6,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1998/0135/pdf/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":3323,"rank":101,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1998/0135/","linkFileType":{"id":5,"text":"html"}},{"id":161127,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr98135.jpg"},{"id":284310,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1998/0135/pdf/of98-135.pdf","text":"Plate 1"}],"scale":"48000","country":"United States","state":"Alaska","otherGeospatial":"Akutan Island","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -166.1579132080078,\n              54.02955339563476\n            ],\n            [\n              -165.64498901367188,\n              54.02955339563476\n            ],\n            [\n              -165.64498901367188,\n              54.23032019657872\n            ],\n            [\n              -166.1579132080078,\n              54.23032019657872\n            ],\n            [\n              -166.1579132080078,\n              54.02955339563476\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad6e4b07f02db683ff3","contributors":{"authors":[{"text":"Richter, Donald H.","contributorId":61021,"corporation":false,"usgs":true,"family":"Richter","given":"Donald","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":208294,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Waythomas, Christopher F. 0000-0002-3898-272X cwaythomas@usgs.gov","orcid":"https://orcid.org/0000-0002-3898-272X","contributorId":640,"corporation":false,"usgs":true,"family":"Waythomas","given":"Christopher","email":"cwaythomas@usgs.gov","middleInitial":"F.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":208292,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McGimsey, Robert G. 0000-0001-5379-7779 mcgimsey@usgs.gov","orcid":"https://orcid.org/0000-0001-5379-7779","contributorId":2352,"corporation":false,"usgs":true,"family":"McGimsey","given":"Robert","email":"mcgimsey@usgs.gov","middleInitial":"G.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":208293,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stelling, Peter L.","contributorId":84414,"corporation":false,"usgs":true,"family":"Stelling","given":"Peter","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":208295,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70185240,"text":"70185240 - 1998 - Identifying and mitigating errors in satellite telemetry of polar bears","interactions":[],"lastModifiedDate":"2017-03-16T15:32:36","indexId":"70185240","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3671,"text":"Ursus","active":true,"publicationSubtype":{"id":10}},"title":"Identifying and mitigating errors in satellite telemetry of polar bears","docAbstract":"<p><span>Satellite radiotelemetry is a useful method of tracking movements of animals that travel long distances or inhabit remote areas. However, the logistical constraints that encourage the use of satellite telemetry also inhibit efforts to assess accuracy of the resulting data. To investigate effectiveness of methods that might be used to improve the reliability of these data, we compared 3 sets of criteria designed to select the most plausible locations of polar bears (<i>Ursus maritimus</i>) that were tracked using satellite radiotelemetry in the Bering, Chukchi, East Siberian, Laptev, and Kara seas during 1988-93. We also evaluated several indices of location accuracy. Our results suggested that, although indices could provide information useful in evaluating location accuracy, no index or set of criteria was sufficient to identify all the implausible locations. Thus, it was necessary to examine the data and make subjective decisions about which locations to accept or reject. However, by using a formal set of selection criteria, we simplified the task of evaluating locations and ensured that decisions were made consistently. This approach also enabled us to evaluate biases that may be introduced by the criteria used to identify location errors. For our study, the best set of selection criteria comprised: (1) rejecting locations for which the distance to the nearest other point from the same day was &gt;50 km; (2) determining the highest accuracy code (NLOC) for a particular day and rejecting locations from that day with lesser values; and (3) from the remaining locations for each day, selecting the location closest to the location chosen for the previous transmission period. Although our selection criteria seemed unlikely to bias studies of habitat use or geographic distribution, basing selection decisions on distances between points might bias studies of movement rates or distances. It is unlikely that any set of criteria will be best for all situations; to make efficient use of data and minimize bias, these rules must be tailored to specific study objectives.</span></p>","language":"English","publisher":"International Association for Bear Research and Management","usgsCitation":"Arthur, S.M., Garner, G.W., and Olson, T.L., 1998, Identifying and mitigating errors in satellite telemetry of polar bears: Ursus, v. 10, p. 413-419.","productDescription":"7 p.","startPage":"413","endPage":"419","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337774,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337771,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.bearbiology.com/index.php?id=ursvol9_20","text":"Volume 10 on Journal's Website"}],"volume":"10","publicComments":"This volume is titled \"A selection of papers from the Tenth International Conference on Bear Research and Management, Fairbanks, Alaska, July 1995, and Mora, Sweden, September 1995.\"","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58cba425e4b0849ce97dc7c0","contributors":{"authors":[{"text":"Arthur, Stephen M.","contributorId":189438,"corporation":false,"usgs":false,"family":"Arthur","given":"Stephen","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":684838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garner, Gerald W.","contributorId":149918,"corporation":false,"usgs":false,"family":"Garner","given":"Gerald","email":"","middleInitial":"W.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":684839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Olson, Tamara L.","contributorId":29971,"corporation":false,"usgs":false,"family":"Olson","given":"Tamara","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":684840,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
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