No abstract available.
","language":"English","publisher":"Springer","doi":"10.1007/s002540050257","usgsCitation":"Stuckless, J.S., Marshall, B.D., Vaniman, D.T., Dudley, W.W., Peterman, Z., Paces, J.B., Whelan, J.F., Taylor, E.M., Forester, R.M., and O’Leary, D.W., 1998, \"Overview of calcite/opal deposits at or near the proposed high-level nuclear waste site, Yucca Mountain, Nevada, USA: pedogenic, hypogene, or both\" by C.A. Hill, Y.V. Dublyansky, R.S. Harmon, C.M. Schluter: Environmental Geology, v. 34, p. 70-78, https://doi.org/10.1007/s002540050257.","productDescription":"9 p.","startPage":"70","endPage":"78","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":374233,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.48254394531249,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.91352904330221\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"34","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stuckless, John S. 0000-0002-7536-0444 jstuckless@usgs.gov","orcid":"https://orcid.org/0000-0002-7536-0444","contributorId":4974,"corporation":false,"usgs":true,"family":"Stuckless","given":"John","email":"jstuckless@usgs.gov","middleInitial":"S.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":787814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Marshall, Brian D. 0000-0002-8093-0093 bdmarsha@usgs.gov","orcid":"https://orcid.org/0000-0002-8093-0093","contributorId":520,"corporation":false,"usgs":true,"family":"Marshall","given":"Brian","email":"bdmarsha@usgs.gov","middleInitial":"D.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":787815,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vaniman, D. T.","contributorId":22911,"corporation":false,"usgs":true,"family":"Vaniman","given":"D.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":787816,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dudley, W. W.","contributorId":101941,"corporation":false,"usgs":true,"family":"Dudley","given":"W.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":787817,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Peterman, Zell E. 0000-0002-5694-8082 peterman@usgs.gov","orcid":"https://orcid.org/0000-0002-5694-8082","contributorId":620,"corporation":false,"usgs":true,"family":"Peterman","given":"Zell E.","email":"peterman@usgs.gov","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":787818,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Paces, James B. 0000-0002-9809-8493 jbpaces@usgs.gov","orcid":"https://orcid.org/0000-0002-9809-8493","contributorId":2514,"corporation":false,"usgs":true,"family":"Paces","given":"James","email":"jbpaces@usgs.gov","middleInitial":"B.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":787819,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Whelan, J. F.","contributorId":45328,"corporation":false,"usgs":true,"family":"Whelan","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":787820,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Taylor, Emily M. 0000-0003-1152-5761 emtaylor@usgs.gov","orcid":"https://orcid.org/0000-0003-1152-5761","contributorId":127802,"corporation":false,"usgs":true,"family":"Taylor","given":"Emily","email":"emtaylor@usgs.gov","middleInitial":"M.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":787821,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Forester, Richard M.","contributorId":71961,"corporation":false,"usgs":true,"family":"Forester","given":"Richard","email":"","middleInitial":"M.","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":false,"id":787822,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"O’Leary, D. W.","contributorId":224337,"corporation":false,"usgs":false,"family":"O’Leary","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":787823,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":5223820,"text":"5223820 - 1998 - Transferability of habitat suitability criteria: Response to comment","interactions":[],"lastModifiedDate":"2025-03-21T16:45:13.112743","indexId":"5223820","displayToPublicDate":"1998-04-13T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Transferability of habitat suitability criteria: Response to comment","docAbstract":"No abstract available.
","language":"English","publisher":"Taylor & Francis","doi":"10.1577/1548-8675(1999)019<0626:TOHSCR>2.0.CO;2","usgsCitation":"Freeman, M.C., Bowen, Z., and Bovee, K., 1998, Transferability of habitat suitability criteria: Response to comment: North American Journal of Fisheries Management, v. 19, no. 2, p. 626-628, https://doi.org/10.1577/1548-8675(1999)019<0626:TOHSCR>2.0.CO;2.","productDescription":"3 p.","startPage":"626","endPage":"628","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":200184,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db626dec","contributors":{"authors":[{"text":"Freeman, Mary C. 0000-0001-7615-6923","orcid":"https://orcid.org/0000-0001-7615-6923","contributorId":99659,"corporation":false,"usgs":true,"family":"Freeman","given":"Mary","email":"","middleInitial":"C.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":339601,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bowen, Z.H.","contributorId":81045,"corporation":false,"usgs":true,"family":"Bowen","given":"Z.H.","email":"","affiliations":[],"preferred":false,"id":339600,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bovee, K.D.","contributorId":15954,"corporation":false,"usgs":true,"family":"Bovee","given":"K.D.","affiliations":[],"preferred":false,"id":339599,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1000773,"text":"1000773 - 1998 - The effect of canopy cover and seasonal change on host plant quality for the endangered Karner blue butterfly (Lycaeidesmelissasamuelis)","interactions":[],"lastModifiedDate":"2025-03-20T16:42:45.207635","indexId":"1000773","displayToPublicDate":"1998-04-03T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2932,"text":"Oecologia","active":true,"publicationSubtype":{"id":10}},"title":"The effect of canopy cover and seasonal change on host plant quality for the endangered Karner blue butterfly (Lycaeidesmelissasamuelis)","docAbstract":"Larvae of the Karner blue butterfly, Lycaeidesmelissasamuelis, feed solely on wild lupine, Lupinusperennis, from the emergence to summer senescence of the plant. Wild lupine is most abundant in open areas but Karner blue females oviposit more frequently on lupines growing in moderate shade. Can differences in lupine quality between open and shaded areas help explain this disparity in resource use? Furthermore, many lupines are senescent before the second larval brood completes development. How does lupine senescence affect larval growth? We addressed these questions by measuring growth rates of larvae fed lupines of different phenological stages and lupines growing under different shade conditions. The habitat conditions under which lupines grew and plant phenological stage did not generally affect final larval or pupal weight but did significantly affect duration of the larval period. Duration was shortest for larvae fed leaves from flowering lupines and was negatively correlated with leaf nitrogen concentration. Ovipositing in areas of moderate shade should increase second-brood larval exposure to flowering lupines. In addition, larval growth was significantly faster on shade-grown lupines that were in seed than on similar sun-grown lupines. These are possible advantages of the higher-than-expected oviposition rate on shade-grown lupines. Given the canopy-related trade-off between lupine abundance and quality, maintenance of canopy heterogeneity is an important conservation management goal. Larvae were also fed leaves growing in poor soil conditions and leaves with mildew infection. These and other feeding treatments that we anticipated would inhibit larval growth often did not. In particular, ant-tended larvae exhibited the highest weight gain per amount of lupine eaten and a relatively fast growth rate. This represents an advantage of ant tending to Karner blue larvae.
","language":"English","publisher":"Springer Nature","doi":"10.1007/s004420050442","usgsCitation":"Grundel, R., Pavlovic, N.B., and Sulzman, C.L., 1998, The effect of canopy cover and seasonal change on host plant quality for the endangered Karner blue butterfly (Lycaeidesmelissasamuelis): Oecologia, v. 114, no. 2, p. 243-250, https://doi.org/10.1007/s004420050442.","productDescription":"8 p.","startPage":"243","endPage":"250","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":488346,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://zenodo.org/record/1232745","text":"External Repository"},{"id":133594,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Indiana","otherGeospatial":"Indiana Dunes National Lakeshore","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -87.08901556474589,\n 41.65358488814627\n ],\n [\n -86.91962990300566,\n 41.65358488814627\n ],\n [\n -86.91962990300566,\n 41.70012474037401\n ],\n [\n -87.08901556474589,\n 41.70012474037401\n ],\n [\n -87.08901556474589,\n 41.65358488814627\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"114","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0de4b07f02db5fd389","contributors":{"authors":[{"text":"Grundel, Ralph 0000-0002-2949-7087 rgrundel@usgs.gov","orcid":"https://orcid.org/0000-0002-2949-7087","contributorId":2444,"corporation":false,"usgs":true,"family":"Grundel","given":"Ralph","email":"rgrundel@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":309397,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pavlovic, Noel B. 0000-0002-2335-2274 npavlovic@usgs.gov","orcid":"https://orcid.org/0000-0002-2335-2274","contributorId":1976,"corporation":false,"usgs":true,"family":"Pavlovic","given":"Noel","email":"npavlovic@usgs.gov","middleInitial":"B.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":309396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sulzman, Christina L.","contributorId":61373,"corporation":false,"usgs":true,"family":"Sulzman","given":"Christina","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":309398,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70073677,"text":"70073677 - 1998 - Environmental toxicology and risk assessment: Seventh volume","interactions":[{"subject":{"id":70020462,"text":"70020462 - 1998 - Methods for assessing the impacts of ultraviolet-B radiation on aquatic invertebrates","indexId":"70020462","publicationYear":"1998","noYear":false,"title":"Methods for assessing the impacts of ultraviolet-B radiation on aquatic invertebrates"},"predicate":"IS_PART_OF","object":{"id":70073677,"text":"70073677 - 1998 - Environmental toxicology and risk assessment: Seventh volume","indexId":"70073677","publicationYear":"1998","noYear":false,"title":"Environmental toxicology and risk assessment: Seventh volume"},"id":1}],"lastModifiedDate":"2018-06-17T11:59:11","indexId":"70073677","displayToPublicDate":"1998-04-01T13:57:54","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":3,"text":"Organization Series"},"seriesTitle":{"id":5638,"text":"ASTM Special Technical Publication","printIssn":"1071-720X","active":true,"publicationSubtype":{"id":3}},"seriesNumber":"STP1333","title":"Environmental toxicology and risk assessment: Seventh volume","docAbstract":"This publication, Environmental Toxicology and Risk Assessment: Seventh Volume, contains papers presented at the Seventh Symposium on Toxicology and Risk Assessment: Ultraviolet Radiation and the Environment, held 7-9 April, 1997 in St. Louis, MO. The symposium, the 24th in a series on environmental toxicology, was sponsored by Committee E-47. Edward E. Little, of the U.S. Geological Survey/Biological Services Division in Columbia, MO, presided as chairman of the symposium. Bruce M. Greenberg, with the Department of Biology at the University of Waterloo in Ontario, Canada, and Aaron J. DeLonay, also with the U.S. Geological Service/Biological Services Division in Columbia, MO, served as co-chairmen of the symposium. Each of these men served as editor of the resulting publication.
","conferenceTitle":"Seventh Symposium on Environmental Toxicology and Risk Assessment: Ultraviolet Radiation and the Environment","conferenceDate":"April 7-9, 1997","conferenceLocation":"St. Louis, MO","language":"English","publisher":"American Society for Testing and Materials","publisherLocation":"West Conshocken, PA","doi":"10.1520/STP1333-EB","isbn":"978-0-8031-1485-2","usgsCitation":"1998, Environmental toxicology and risk assessment: Seventh volume: ASTM Special Technical Publication STP1333, 418 p., https://doi.org/10.1520/STP1333-EB.","productDescription":"418 p.","numberOfPages":"418","costCenters":[{"id":267,"text":"Environmental and Contaminants Research Center","active":false,"usgs":true}],"links":[{"id":281333,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd57afe4b0b290850f79db","contributors":{"editors":[{"text":"Little, Edward E. 0000-0003-0034-3639 elittle@usgs.gov","orcid":"https://orcid.org/0000-0003-0034-3639","contributorId":1746,"corporation":false,"usgs":true,"family":"Little","given":"Edward","email":"elittle@usgs.gov","middleInitial":"E.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":509759,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Greenberg, Bruce M.","contributorId":103577,"corporation":false,"usgs":true,"family":"Greenberg","given":"Bruce","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":509761,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"DeLonay, Aaron J.","contributorId":53360,"corporation":false,"usgs":true,"family":"DeLonay","given":"Aaron","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":509760,"contributorType":{"id":2,"text":"Editors"},"rank":3}]}} ,{"id":5223300,"text":"5223300 - 1998 - Estimating species richness: The importance of heterogeneity in species detectability","interactions":[],"lastModifiedDate":"2023-12-14T16:26:47.111214","indexId":"5223300","displayToPublicDate":"1998-04-01T12:18:40","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":"Estimating species richness: The importance of heterogeneity in species detectability","docAbstract":"Estimating species richness (i.e., the actual number of species present in a given area) is a basic objective of many field studies carried out in community ecology and is also of crucial concern when dealing with the conservation and management of biodiversity. In most studies, the total number of species recorded in an area at a given time is taken as a measure of species richness. Here we use a capture–recapture approach to species richness estimation with North American Breeding Bird Survey (BBS) data in order to estimate species detectability and thus gain insight about its importance. In particular, competing models making different assumptions about species detectability are available. We carried out analyses on all survey routes of four states, Arizona, Maryland, North Dakota, and Wisconsin, in two years, 1970 and 1990. These states were chosen to provide contrasting habitats, bird species composition, and survey quality. We investigated the effect of state, year, and observer ability on the proportions of different models selected, and on estimates of detectability and species richness. Our results indicate that model Mh, which assumes heterogeneous detection probability among species, is frequently appropriate for estimating species richness from BBS data. Species detectability varied among states and was higher for the more skilled observers. These results emphasize the need to take into account potential heterogeneities in detectability among species in studies of factors affecting species richness.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/0012-9658(1998)079[1018:ESRTIO]2.0.CO;2","usgsCitation":"Boulinier, T., Nichols, J.D., Sauer, J.R., Hines, J.E., and Pollock, K.H., 1998, Estimating species richness: The importance of heterogeneity in species detectability: Ecology, v. 79, no. 3, p. 1018-1028, https://doi.org/10.1890/0012-9658(1998)079[1018:ESRTIO]2.0.CO;2.","productDescription":"11 p.","startPage":"1018","endPage":"1028","numberOfPages":"11","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198743,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"79","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ce4b07f02db5fc8f1","contributors":{"authors":[{"text":"Boulinier, T.","contributorId":37845,"corporation":false,"usgs":true,"family":"Boulinier","given":"T.","email":"","affiliations":[],"preferred":false,"id":338352,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":140652,"corporation":false,"usgs":true,"family":"Nichols","given":"James","email":"jnichols@usgs.gov","middleInitial":"D.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":338350,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sauer, John R. 0000-0002-4557-3019 jrsauer@usgs.gov","orcid":"https://orcid.org/0000-0002-4557-3019","contributorId":146917,"corporation":false,"usgs":true,"family":"Sauer","given":"John","email":"jrsauer@usgs.gov","middleInitial":"R.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":338354,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hines, James E. 0000-0001-5478-7230 jhines@usgs.gov","orcid":"https://orcid.org/0000-0001-5478-7230","contributorId":146530,"corporation":false,"usgs":true,"family":"Hines","given":"James","email":"jhines@usgs.gov","middleInitial":"E.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":338351,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pollock, K. H.","contributorId":65184,"corporation":false,"usgs":false,"family":"Pollock","given":"K.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":338353,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70228804,"text":"70228804 - 1998 - Paleoclimate simulations for North America over the past 21,000 years: Features of the simulated climate and comparisons with paleoenvironmental data","interactions":[],"lastModifiedDate":"2022-02-22T14:44:01.256068","indexId":"70228804","displayToPublicDate":"1998-04-01T08:30:46","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Paleoclimate simulations for North America over the past 21,000 years: Features of the simulated climate and comparisons with paleoenvironmental data","docAbstract":"Maps of upper-level and surface winds and of surface temperature and precipitation illustrate the results of a sequence of global paleoclimatic simulations spanning the past 21,000 yr for North America. We review (a) the large-scale features of circulation, temperature, and precipitation that appear in the simulations from the NCAR Community Climate Model Version 1 (CCM 1), (b) the implications of the simulated climate for the past continental-scale distributions of three plant taxa (Picea spp., Pseudotsuga menziesii, and Artemisia tridentata), which are broadly representative of the vegetation across the continent, and (c) the potential explanations in terms of atmospheric circulation or surface energy- and water-balance processes for mismatches between the simulations and observations. Most of the broad-scale features of previous paleoclimatic simulations with the NCAR CCM 0 for North America are present in the current simulations. Many of the elements of a conceptual model (based on previous climate simulations) that describes the controls of paleoclimatic variations across North America during the past 21,000 yr are found in simulations reviewed here. These include (1) displacement of the jet stream by the Laurentide Ice Sheet to the south of its present position in both winter and summer, (2) generation of a ‘glacial anticyclone’ over the ice sheet at the LGM, and the consequent induction of large-scale sinking motions induced over eastern North America, (3) changes in the strength of surface atmospheric circulation features through time, including weakening of the Aleutian low in winter, and strengthening of the eastern Pacific and Bermuda high-pressure systems in summer as the ice sheet decreased in size, (4) development of a ‘heat low’ at the surface and a strengthened ridge in the upper-atmosphere over the continent at the time of the maximum summer insolation anomaly, (5) increases in summer temperature earlier in regions remote from the ice sheet (these increases appear earlier in the present (CCM 1) simulations than in the previous (CCM 0) ones, however), and (6) continuation of negative winter temperature anomalies into the middle Holocene. In general, simulated surface conditions that are discordant with paleoenvironmental observations can be attributed to the simulation of particular atmospheric circulation patterns (e.g. those that suppress precipitation or advect warm air into a region), with these mismatches amplified in Beringia and the southeastern United States by surface energy- and water-balance processes.
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III","contributorId":38297,"corporation":false,"usgs":true,"family":"Webb","given":"T.","suffix":"III","email":"","affiliations":[],"preferred":false,"id":835558,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Whitlock, C.","contributorId":105836,"corporation":false,"usgs":true,"family":"Whitlock","given":"C.","email":"","affiliations":[],"preferred":false,"id":835559,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":32915,"text":"pp1592 - 1998 - The nature and timing of tectonism in the western facies terrane of Nevada and California; an outline of evidence and interpretations derived from geologic maps of key areas","interactions":[],"lastModifiedDate":"2017-01-18T12:21:28","indexId":"pp1592","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1592","title":"The nature and timing of tectonism in the western facies terrane of Nevada and California; an outline of evidence and interpretations derived from geologic maps of key areas","docAbstract":"Along the outer miogeocline of Nevada and Southern California, lower Paleozoic siliceous sediments and basalt flows, the western facies terrane emerged in Late Devonian time and were deeply eroded; but structural evidence that this event, the Antler Orogeny, involved intense folding and thrust faulting is notably scarce. Almost all the intense folding and thrust faulting of Proterozoic to Permian strata dates from the Jurassic to Eocene interval. If this tectonic history is valid, then the genesis of the Antler Orogeny is reduced to a question of vertical tectonics. Pre-Jurassic contraction involving subduction and collision with island arcs is not indicated or required, but the ultimate origin of Paleozoic tectonism remains unclear.","language":"ENGLISH","publisher":"U.S. G.P.O. :\r\nU.S. Dept. of the Interior, U.S. Geological Survey ;\r\nFor sale by U.S. Geological Survey, Information Services,","doi":"10.3133/pp1592","usgsCitation":"Ketner, K., 1998, The nature and timing of tectonism in the western facies terrane of Nevada and California; an outline of evidence and interpretations derived from geologic maps of key areas: U.S. Geological Survey Professional Paper 1592, 19 p., https://doi.org/10.3133/pp1592.","productDescription":"19 p.","costCenters":[],"links":[{"id":122547,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/pp_1592.jpg"},{"id":3086,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/p1592/","linkFileType":{"id":5,"text":"html"}},{"id":333342,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/p1592/p1592.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b4702","contributors":{"authors":[{"text":"Ketner, Keith Brindley","contributorId":18332,"corporation":false,"usgs":true,"family":"Ketner","given":"Keith Brindley","affiliations":[],"preferred":false,"id":209401,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1014927,"text":"1014927 - 1998 - Limits of retrospective power analysis","interactions":[],"lastModifiedDate":"2024-12-13T17:04:31.895354","indexId":"1014927","displayToPublicDate":"1998-04-01T00:00:00","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":"Limits of retrospective power analysis","docAbstract":"Power analysis after study completion has been suggested to interpret study results. We present 3 methods of estimating power and discuss their limitations. We use simulation studies to show that estimated power can be biased, extremely variable, and severely bounded. We endorse the practice of computing power to detect a biologically meaningful difference as a tool for study planning but suggest that calculation of confidence intervals on the parameter of interest is the appropriate way to gauge the strength and biological meaning of study results.
","language":"English","publisher":"Wiley","doi":"10.2307/3802357","usgsCitation":"Gerard, P., Smith, D.R., and Weerakkody, G., 1998, Limits of retrospective power analysis: Journal of Wildlife Management, v. 62, no. 2, p. 801-807, https://doi.org/10.2307/3802357.","productDescription":"7 p.","startPage":"801","endPage":"807","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":130916,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"62","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b16e4b07f02db6a527f","contributors":{"authors":[{"text":"Gerard, Patrick D.","contributorId":140181,"corporation":false,"usgs":false,"family":"Gerard","given":"Patrick D.","affiliations":[{"id":7084,"text":"Clemson University","active":true,"usgs":false}],"preferred":false,"id":321557,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, David R. 0000-0001-6074-9257 drsmith@usgs.gov","orcid":"https://orcid.org/0000-0001-6074-9257","contributorId":168442,"corporation":false,"usgs":true,"family":"Smith","given":"David","email":"drsmith@usgs.gov","middleInitial":"R.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":true,"id":321558,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weerakkody, Govinda","contributorId":100800,"corporation":false,"usgs":true,"family":"Weerakkody","given":"Govinda","email":"","affiliations":[],"preferred":false,"id":321559,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5108,"text":"fs00998 - 1998 - Nutrient transport in the major rivers and streams of the Puget Sound Basin, Washington","interactions":[],"lastModifiedDate":"2012-02-02T00:05:42","indexId":"fs00998","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"009-98","title":"Nutrient transport in the major rivers and streams of the Puget Sound Basin, Washington","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/fs00998","usgsCitation":"Inkpen, E.L., and Embrey, S., 1998, Nutrient transport in the major rivers and streams of the Puget Sound Basin, Washington: U.S. Geological Survey Fact Sheet 009-98, 1 folded sheet ([4] p) : col. ill., col. maps ; 28 cm. col. ill., col. maps ;, https://doi.org/10.3133/fs00998.","productDescription":"1 folded sheet ([4] p) : col. ill., col. maps ; 28 cm. col. ill., col. maps ;","costCenters":[],"links":[{"id":476,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://wa.water.usgs.gov/pubs/fs/fs.009-98/","linkFileType":{"id":5,"text":"html"}},{"id":121494,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1998/0009/report-thumb.jpg"},{"id":31896,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/1998/0009/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db696777","contributors":{"authors":[{"text":"Inkpen, E. L.","contributorId":39776,"corporation":false,"usgs":true,"family":"Inkpen","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":150430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Embrey, S.S.","contributorId":8448,"corporation":false,"usgs":true,"family":"Embrey","given":"S.S.","affiliations":[],"preferred":false,"id":150429,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185262,"text":"70185262 - 1998 - Anaerobic oxidation of [1,2-14C]Dichloroethene under Mn(IV)-reducing conditions","interactions":[],"lastModifiedDate":"2023-01-12T20:34:33.643418","indexId":"70185262","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":850,"text":"Applied and Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Anaerobic oxidation of [1,2-14C]Dichloroethene under Mn(IV)-reducing conditions","title":"Anaerobic oxidation of [1,2-14C]Dichloroethene under Mn(IV)-reducing conditions","docAbstract":"Anaerobic oxidation of [1,2-14C]dichloroethene to14CO2 under Mn(IV)-reducing conditions was demonstrated. The results indicate that oxidative degradation of partially chlorinated solvents like dichloroethene can be significant even under anoxic conditions and demonstrate the potential importance of Mn(IV) reduction for remediation of chlorinated groundwater contaminants.
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1998 - Low-flow water-quality characterization of the Gore Creek watershed, upper Colorado River basin, Colorado, August 1996","interactions":[],"lastModifiedDate":"2012-02-02T00:05:47","indexId":"fs16097","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"160-97","title":"Low-flow water-quality characterization of the Gore Creek watershed, upper Colorado River basin, Colorado, August 1996","docAbstract":"The Upper Colorado River Basin (UCOL) is one of 59 National Water-Quality Assessment (NAWQA) study units designed to assess the status and trends of the Nation?s water quality (Leahy and others, 1990). The UCOL study unit began operation in 1994, and surface-water-quality data collection at a network of 14 sites began in October 1995 (Apodaca and others, 1996; Spahr and others, 1996). Gore Creek, which flows through Vail, Colorado, originates in pristine alpine headwaters and is designated a gold-medal trout fishery. The creek drains an area of about 102 square miles and is a tributary to the Eagle River. Gore Creek at the mouth near Minturn (site 13 in fig. 1) is one of the 14 sites in the UCOL network. This site was selected to evaluate water quality resulting from urban development and recreational land use. The Gore Creek watershed has undergone rapid land-use changes since the 1960?s as the Vail area shifted from traditional mountain ranchlands to a four-season resort community. Residential, recreational, commercial, and transportation development continues near Gore Creek and its tributaries to support the increasing permanent and tourist population of the area. Interstate 70 runs through the watershed from Vail Pass near site 14, along the eastern side of Black Gore Creek, and along the northern side of the main stem of Gore Creek to the mouth of the watershed (fig. 1). A major local concern is how increasing urbanization/recreation affects the water quality, gold-medal trout fishery, and aesthetic values of Gore Creek. An evaluation of the spatial characteristics of water quality in the watershed upstream from site 13 at the mouth of Gore Creek (fig. 1) can provide local water and land managers with information necessary to establish water policy and make land-use planning decisions to maintain or improve water quality. Historical data collected at the mouth of Gore Creek provide information about water quality resulting from land use, but a synoptic sampling is needed to determine the distribution and sources of water-quality constituents at one point in time. In August 1996, a low-flow synoptic sampling for analyses of water-quality properties and constituents at sites in the Gore Creek watershed was done by the U.S. Geological Survey, in cooperation with the Town of Vail, Eagle River Water and Sanitation District, Upper Eagle River Water Authority, and Northwest Colorado Council of Governments, to evaluate the water quality of Gore Creek. The August low-flow period can be important from water-quality and stream ecology perspectives. There is less water available to dilute any contaminants entering the streams, and stream temperatures are highest during August. Physical habitat for aquatic plants and animals is smaller than during most other times of the year. To address these more extreme water-quality and ecological conditions, the synoptic sampling was conducted during the summer low-flow period. Specific objectives of this sampling included: 1. Establish a current data set representing the spatial characteristics of low-flow water-quality conditions in the Gore Creek watershed, and 2. Develop some understanding of land-use and water-quality relations in the watershed. This fact sheet presents hydrologic background information and an analysis of general water-quality properties and constituents, trace elements, and nutrients collected in water samples during low-flow synoptic sampling of the Gore Creek watershed. The U.S. Geological Survey also is conducting a study of the algae and macroinvertebrate communities and physical habitat of streams in the Gore Creek watershed during low flow. This study is designed to provide information about land-use and stream ecology relations in the watershed.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey :\r\nNational Water-Quality Assessment,","doi":"10.3133/fs16097","usgsCitation":"Wynn, K.H., and Spahr, N.E., 1998, Low-flow water-quality characterization of the Gore Creek watershed, upper Colorado River basin, Colorado, August 1996: U.S. Geological Survey Fact Sheet 160-97, [4] p. : col. ill., col. map ; 28 cm. col. ill., col. map ;, https://doi.org/10.3133/fs16097.","productDescription":"[4] p. : col. ill., col. map ; 28 cm. col. ill., col. map ;","costCenters":[],"links":[{"id":703,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/fs-160-97/","linkFileType":{"id":5,"text":"html"}},{"id":125127,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1997/0160/report-thumb.jpg"},{"id":34213,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/1997/0160/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db6487ea","contributors":{"authors":[{"text":"Wynn, Kirby H.","contributorId":37316,"corporation":false,"usgs":true,"family":"Wynn","given":"Kirby","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":153570,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Spahr, Norman E. nspahr@usgs.gov","contributorId":1977,"corporation":false,"usgs":true,"family":"Spahr","given":"Norman","email":"nspahr@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":153569,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":5162,"text":"fs15997 - 1998 - Estimated decreases in dissolved-solids loads in four tributaries to the Colorado River in the Grand Valley, Colorado, 1973-96","interactions":[],"lastModifiedDate":"2012-02-02T00:05:47","indexId":"fs15997","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"159-97","title":"Estimated decreases in dissolved-solids loads in four tributaries to the Colorado River in the Grand Valley, Colorado, 1973-96","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/fs15997","usgsCitation":"Butler, D.L., 1998, Estimated decreases in dissolved-solids loads in four tributaries to the Colorado River in the Grand Valley, Colorado, 1973-96: U.S. Geological Survey Fact Sheet 159-97, [6] p. : col. ill., col. map ; 28 cm. col. ill., col. map ;, https://doi.org/10.3133/fs15997.","productDescription":"[6] p. : col. ill., col. map ; 28 cm. col. ill., col. map ;","costCenters":[],"links":[{"id":125308,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1997/0159/report-thumb.jpg"},{"id":31920,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/1997/0159/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a1ae","contributors":{"authors":[{"text":"Butler, David L.","contributorId":12843,"corporation":false,"usgs":true,"family":"Butler","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":150526,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":66298,"text":"i2629 - 1998 - Geologic map of the southern Independence Mountains, Elko County, Nevada","interactions":[],"lastModifiedDate":"2012-02-10T00:11:04","indexId":"i2629","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2629","subseriesTitle":"GIS","title":"Geologic map of the southern Independence Mountains, Elko County, Nevada","language":"ENGLISH","doi":"10.3133/i2629","isbn":"0607892579","usgsCitation":"Ketner, K.B., 1998, Geologic map of the southern Independence Mountains, Elko County, Nevada: U.S. Geological Survey IMAP 2629, 1 map ;58 x 88 cm. on sheet 74 x 129 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/i2629.","productDescription":"1 map ;58 x 88 cm. on sheet 74 x 129 cm., folded in envelope 30 x 24 cm.","costCenters":[],"links":[{"id":108352,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_13087.htm","linkFileType":{"id":5,"text":"html"},"description":"13087"},{"id":189408,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"24000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.11749999999999,41 ], [ -116.11749999999999,41.1175 ], [ -115.86749999999999,41.1175 ], [ -115.86749999999999,41 ], [ -116.11749999999999,41 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db6889b2","contributors":{"authors":[{"text":"Ketner, K. B.","contributorId":23121,"corporation":false,"usgs":true,"family":"Ketner","given":"K.","email":"","middleInitial":"B.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":274312,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":4949,"text":"fs00898 - 1998 - USGS Mineral Resources Program: A National Perspective","interactions":[],"lastModifiedDate":"2017-02-23T14:44:38","indexId":"fs00898","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"008-98","title":"USGS Mineral Resources Program: A National Perspective","docAbstract":"Minerals are chemical compounds abundant in the rocks, soil, and water around us and they have a profound impact on the lives of all beings. Naturally occurring minerals define the landscape in which we live. They affect our ecosystems, influence the availability of nutrients that support biota, impact the distribution of vegetation, and may also contribute to contamination of the environment. Minerals are used in fertilizers for farming, in concrete and building materials for construction, in aggregate for roads, in steel for cars and all manner of transportation, and in materials crucial to the communications industry.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs00898","usgsCitation":"Kropschot, S., 1998, USGS Mineral Resources Program: A National Perspective: U.S. Geological Survey Fact Sheet 008-98, 1 folded sheet, https://doi.org/10.3133/fs00898.","productDescription":"1 folded sheet","costCenters":[],"links":[{"id":117,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/fs-0008-98/fs-0008-98.html","linkFileType":{"id":5,"text":"html"}},{"id":117985,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_008_98.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a29e4b07f02db611735","contributors":{"authors":[{"text":"Kropschot, S.J.","contributorId":8456,"corporation":false,"usgs":true,"family":"Kropschot","given":"S.J.","affiliations":[],"preferred":false,"id":150188,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":4950,"text":"fs01198 - 1998 - USGS Mineral Resources Program: International Activities","interactions":[],"lastModifiedDate":"2017-02-23T14:52:37","indexId":"fs01198","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"011-98","title":"USGS Mineral Resources Program: International Activities","docAbstract":"The USGS is the country's leading earth science organization. Since 1879, USGS scientists have gathered and analyzed data and disseminated the results of their research on the geology, cartography, hydrology, and, more recently biology, of every continent and ocean on Earth. Multidisciplinary research both in the United States and in the international arena has been an important part of the USGS mission. The USGS Mineral Resources Program is the sole Federal agency program that provides high-quality scientific information, objective resource assessments, and unbiased research results on mineral issues
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs01198","usgsCitation":"Kropschot, S., 1998, USGS Mineral Resources Program: International Activities: U.S. Geological Survey Fact Sheet 011-98, 1 folded sheet, https://doi.org/10.3133/fs01198.","productDescription":"1 folded sheet","costCenters":[],"links":[{"id":117986,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_011_98.jpg"},{"id":118,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/fs-0011-98/fs-0011-98.html","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a29e4b07f02db6117d6","contributors":{"authors":[{"text":"Kropschot, S.J.","contributorId":8456,"corporation":false,"usgs":true,"family":"Kropschot","given":"S.J.","affiliations":[],"preferred":false,"id":150189,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":66762,"text":"i2622 - 1998 - Maps showing distribution of erosional clasts on the middle Jurassic J-2 unconformity in the western interior of the United States","interactions":[],"lastModifiedDate":"2012-02-10T00:11:16","indexId":"i2622","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2622","subseriesTitle":"GIS","title":"Maps showing distribution of erosional clasts on the middle Jurassic J-2 unconformity in the western interior of the United States","language":"ENGLISH","doi":"10.3133/i2622","isbn":"0607889586","usgsCitation":"O'Sullivan, R.B., and Pipiringos, G., 1998, Maps showing distribution of erosional clasts on the middle Jurassic J-2 unconformity in the western interior of the United States: U.S. Geological Survey IMAP 2622, 2 maps ;34 x 24 cm. and 14 x 10 cm., on sheet 88 x 112 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/i2622.","productDescription":"2 maps ;34 x 24 cm. and 14 x 10 cm., on sheet 88 x 112 cm., folded in envelope 30 x 24 cm.","costCenters":[],"links":[{"id":108344,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_13072.htm","linkFileType":{"id":5,"text":"html"},"description":"13072"},{"id":187478,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":6112,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/i-2622/i2622.html","linkFileType":{"id":5,"text":"html"}}],"scale":"500000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114,36 ], [ -114,48 ], [ -102,48 ], [ -102,36 ], [ -114,36 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db605766","contributors":{"authors":[{"text":"O'Sullivan, R. B.","contributorId":57858,"corporation":false,"usgs":true,"family":"O'Sullivan","given":"R.","middleInitial":"B.","affiliations":[],"preferred":false,"id":275033,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pipiringos, G. N.","contributorId":11210,"corporation":false,"usgs":true,"family":"Pipiringos","given":"G. N.","affiliations":[],"preferred":false,"id":275032,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":6644,"text":"fs00398 - 1998 - Changes in sediment and nutrient storage in three reservoirs in the lower Susquehanna River Basin and implications for the Chesapeake Bay","interactions":[],"lastModifiedDate":"2018-02-20T14:26:05","indexId":"fs00398","displayToPublicDate":"1998-04-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"003-98","title":"Changes in sediment and nutrient storage in three reservoirs in the lower Susquehanna River Basin and implications for the Chesapeake Bay","docAbstract":"The Susquehanna River contributes nearly 50 percent of the freshwater discharge to the Chesapeake Bay in a year of normal or average streamflow. The river also transports the greatest amount of nutrients (estimates of nearly 66 percent of the nitrogen and 40 percent of the phosphorus load) from all nontidal areas in the Chesapeake Bay Basin. Excessive nutrients in the Bay result in algal blooms that decrease the amount of light reaching submerged aquatic vegetation, and upon decomposition, deplete the oxygen in the water. In a normal-flow year, the Susquehanna River also contributes about 25 percent of the sediment load from non-tidal areas to the Bay. Suspended sediments also reduce light needed by submerged aquatic vegetation and can smother living-resource habitat and obstruct fish gills.
A reservoir system consisting of Lake Clarke, Lake Aldred, and Conowingo Reservoir is formed by three consecutive hydroelectric dams on the Lower Susquehanna River. Safe Harbor Dam, which forms Lake Clarke, was built in 1931. Holtwood Dam, the smallest of the three, was built in 1910 to form Lake Aldred. The largest and most downstream dam, Conowingo Dam, was built in 1928 and forms Conowingo Reservoir. Since construction, the reservoirs have been filling with sediment and sediment-associated nutrients. The upper two reservoirs have reached their capacity to store sediments and generally no longer trap nutrients and sediments. Conowingo Reservoir has not reached storage capacity, however, and is currently trapping about 70 percent of the suspended-sediment load, 2 percent of the total-nitrogen load, and 40 percent of the total-phosphorus load that would otherwise be discharged to the Chesapeake Bay (Ott and others, 1991).
In 1990, 1993, and 1996, the U.S. Geological Survey collected information on the depth to sediment in the reservoirs to determine the remaining sediment-storage capacity in the reservoir system and to estimate when the reservoirs will reach sediment-storage capacity. In addition, sediment cores were collected and analyzed in 1993 and 1996 to determine the nutrient mass remaining in the Conowingo Reservoir. The 1996 data collection followed a major flood in the Susquehanna River Basin.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs00398","usgsCitation":"Langland, M.J., 1998, Changes in sediment and nutrient storage in three reservoirs in the lower Susquehanna River Basin and implications for the Chesapeake Bay: U.S. Geological Survey Fact Sheet 003-98, 4 p., https://doi.org/10.3133/fs00398.","productDescription":"4 p.","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":121629,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1998/0003/coverthb2.jpg"},{"id":34070,"rank":299,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/1998/0003/fs19980003.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"}}],"contact":"Director, Pennsylvania Water Science Center
U.S. Geological Survey
215 Limekiln Road
New Cumberland, PA 17070
Ground-water discharge is a significant source of nitrate load to tidal creeks, coastal estuaries, and Chesapeake Bay. Different studies have found that forest buffers greater than 200 feet wide remove most of the nitrate from passing ground water. These buffers are commonly included in regional nutrient-management strategies. Results of a U.S. Geological Survey study on the Eastern Shore of Virginia, however, indicate that the presence of forest buffers alone may not significantly decrease nitrate load in ground-water discharge. The effectiveness of forest buffers largely depends on the composition of local soils and ground-water flow paths. Study results also indicate that large amounts of nitrate are removed from ground water by the natural process of denitrification, which may occur independently of the presence or absence of forest buffers. The results of this study indicate that in addition to the presence of forest buffers, a range of other natural factors, such as soil texture and organic matter content and ground-water flow paths, affect the fate of nitrate in ground water. These factors are important to include along with forest buffers in developing comprehensive nutrient-management strategies.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs17897","collaboration":"Prepared in cooperation with the Counties of Accomack and Northampton, and the Accomack-Northampton Planning District Commission","usgsCitation":"Speiran, G.K., Hamilton, P.A., and Woodside, M., 1998, Natural processes for managing nitrate in ground water discharged to Chesapeake Bay and other surface waters: More than forest buffers: U.S. Geological Survey Fact Sheet 178-97, 6 p., https://doi.org/10.3133/fs17897.","productDescription":"6 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true}],"links":[{"id":341789,"rank":4,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/1997/0178/index.html","linkFileType":{"id":5,"text":"html"}},{"id":34179,"rank":299,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/1997/0178/report.pdf","text":"Report","size":"3.33 MB","linkFileType":{"id":1,"text":"pdf"},"description":"FS 1997-0178"},{"id":121545,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1997/0178/report-thumb.jpg"}],"contact":"Director, Virginia Water Science Center
U.S. Geological Survey
1730 East Parham Road
Richmond, VA 23228
The city of Santa Barbara pumps most of its ground water from the Santa Barbara and Foothill ground-water basins. The Santa Barbara basin is subdivided into two storage units: Storage Unit I and Storage Unit III. The Foothill basin and Storage Unit I of the Santa Barbara basin have been studied extensively and ground-water flow models have been developed for them. In this report, the geohydrology of the Santa Barbara ground- water basin is described with a special emphasis on Storage Unit III in the southwestern part of the basin. The purposes of this study were to summarize and evaluate the geohydrology of Storage Unit III and to develop an areawide model of the Santa Barbara and Foothill basins that includes the previously unmodeled Storage Unit III.
Storage Unit III is in the southwestern part of the city of Santa Barbara. It is approximately 3.5 miles long and varies in width from about 2,000 feet in the southeast to 4,000 feet in the north-west. Storage Unit III is composed of the Santa Barbara Formation and overlying alluvium. The Santa Barbara Formation (the principal aquifer) consists of Pleistocene and Pliocene(?) unconsolidated marine sand, silt, and clay, and it has a maximum saturated thickness of about 160 feet. The alluvium that overlies the Santa Barbara Formation has a maximum saturated thickness of about 140 feet. The storage unit is bounded areally by faults and low-permeability deposits and is underlain by rocks of Tertiary age.
The main sources of recharge to Storage Unit III are seepage from Arroyo Burro and infiltration of precipitation. Most of the recharge occurs in the northwest part of the storage unit, and ground water flows toward the southeast along the unit's long axis. Lesser amounts of recharge may occur as subsurface flow from the Hope Ranch subbasin and as upwelling from the underlying Tertiary rocks. Discharge from Storage Unit III occurs as pumpage, flow to underground drains, underflow through alluvium in the vicinity of Arroyo Burro across the Lavigia Fault, evapotranspiration, and underflow to the Pacific Ocean. The faults that bound Storage Unit III generally are considered to be effective barriers to the flow of ground water. Interbasin ground-water flow occurs where deposits of younger alluvium along stream channels cross faults. Ground-water quality in Storage Unit III deposits varies with location and depth. Upward leakage of poor-quality water from the underlying Tertiary rocks occurs in the storage unit, and such leakage can be influenced by poor well construction or by heavy localized pumping. The highest dissolved-solids concentration (4,710 milligrams per liter) in ground water resulting from this upward leakage is found in the coastal part of the storage unit.
The ground-water system was modeled as two horizontal layers. In the Foothill basin and Storage Unit I the layers are separated by a confining bed. The upper layer represents the upper producing zone and the shallow zone near the coast. The lower layer represents the lower producing zone. In general, the faults in the study area were assumed to be no-flow boundaries, except for the offshore fault that forms the southeast boundary; the southeast boundary was simulated as a general-head boundary. The Storage Unit III model was combined with the preexisting Storage Unit I and Foothill basin models, using horizontal flow barriers, to form an areawide model.
The areawide model was calibrated by simulating steady-state predevelopment conditions and transient conditions for 1978-92. The nonpumping steady- state simulation was used to verify that the calibrated model yielded physically reasonable results for predevelopment conditions. The calibrated areawide model calculates water levels in Storage Unit III that are within 10 feet of measured water levels at all sites of comparison. In addition, the model adequately simulates water levels in the Storage Unit I and Foothill basin areas. A total of 33,430 acre-feet of water was pumped from the study area during the simulation period. Model results indicate that 2,833 acre-feet came from storage and 5, 332 acre-feet crossed the general-head boundary from the ocean, thus indicating that seawater intrusion could occur. A sensitivity analysis indicates that, in general, the model is most sensitive to changes in transmissivity and total recharge.
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