Playa-lake basins of the Southern High Plains, Texas and New Mexico, may originate wherever water periodically can collect in a surficial depression. They expand, however, by hydrologic and geomorphic processes including (1) dissolution of lithologic carbonates by infiltrating water; (2) transport downward of fine-grained clastic and organic material by the infiltrating ground water, leading to continuing processes of oxidation and carbonate dissolution in the subsurface; and (3) eolian removal of clastic material from the floor of playa lakes, which at some sites appears to have deepened playa depressions.
Evidence for largely hydrologic processes of playa-basin development on the Southern High Plains includes (1) a geographic occurrence restricted to relatively flat areas of the High Plains surface that have poorly developed fluvial drainage and which are underlain by generally unsaturated clastic and calcrete beds; (2) a tendency to occur where water collects and infiltrates, as along ephemeral streams and lineations suggestive of fracture systems; and (3) hydrologic, geochemical, petrographic, and bore-hole data, which suggest that recharge to the High Plains aquifer is principally from playa lakes, that various geochemical changes including carbonate dissolution and enhancement of secondary porosity occur as water moves downward through the unsaturated zone beneath playa lakes, and that calcrete beds often are missing or significantly dissolved beneath playa floors.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1987)99<215:PBOTSH>2.0.CO;2","usgsCitation":"Osterkamp, W., and Wood, W., 1987, Playa-lake basins on the Southern High Plains of Texas and New Mexico: Part I. Hydrologic, geomorphic, and geologic evidence for their development: Geological Society of America Bulletin, v. 99, no. 2, p. 215-223, https://doi.org/10.1130/0016-7606(1987)99<215:PBOTSH>2.0.CO;2.","productDescription":"9 p.","startPage":"215","endPage":"223","numberOfPages":"9","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":226010,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas, New Mexico","otherGeospatial":"Southern High Plains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.84228515625,\n 30.92107637538488\n ],\n [\n -99.73388671874999,\n 30.92107637538488\n ],\n [\n -99.73388671874999,\n 36.932330061503144\n ],\n [\n -105.84228515625,\n 36.932330061503144\n ],\n [\n -105.84228515625,\n 30.92107637538488\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"99","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7c37e4b0c8380cd7987c","contributors":{"authors":[{"text":"Osterkamp, Waite wroster@usgs.gov","contributorId":2515,"corporation":false,"usgs":true,"family":"Osterkamp","given":"Waite","email":"wroster@usgs.gov","affiliations":[],"preferred":true,"id":779740,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wood, W.W.","contributorId":21974,"corporation":false,"usgs":true,"family":"Wood","given":"W.W.","email":"","affiliations":[],"preferred":false,"id":367887,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014191,"text":"70014191 - 1987 - New perspectives on the eruption of 1912 in the valley of ten thousand smokes, Katmai National Park, Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:19:29","indexId":"70014191","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"New perspectives on the eruption of 1912 in the valley of ten thousand smokes, Katmai National Park, Alaska","docAbstract":"New data extend our understanding of the 1912 eruption, its backfilled vent complex at Novarupta, and magma-storage systems beneath adjacent stratovolcanoes. Initial Plinian rhyolite fallout is confined to a narrow downwind sector, and its maximum thickness may occur as far as 13 km from source. In contrast, the partly contemporaneous rhyolite-rich ash flows underwent relatively low-energy emplacement, their generation evidently being decoupled from the high column. Flow veneers 1-13 m thick on near-vent ridge crests exhibit a general rhyolite-to-andesite sequence like that of the much thicker valley-confined ignimbrite into which they merge downslope. Lithics in both the initial Plinian and the ignimbrite are predominantly fragments of the Jurassic Naknek Formation, which extends from the surface to a depth of ca. 1500 m. Absence of lithics from the underlying sedimentary section limits to < 1.5 km the fragmentation level and the structural depth of the vent, which is thought to be funnel-shaped, flaring shallowly to a surface diameter of 2 km. Overlying the ignimbrite are layers of Plinian dacite fallout, > 100 m thick near source and 10 m thick 3 km away, which dip back into an inner vent <0.5 km wide, nested inside the earlier vent funnel of the ignimbrite. The dacite fallout is poor in Naknek lithics but contains abundant fragments of vitrophyre, most of which was vent-filling, densely welded tuff reejected during later phases of the 3-day eruption. Adjacent to the inner vent, a 225-m-high asymmetrical accumulation of coarse near-vent ejecta is stratigraphically continuous with the regional dacite fallout. Distensional faulting of its crest may reflect spreading related to compaction and welding. Nearby andesite-dacite stratovolcanoes, i.e., Martin, Mageik, Trident, and Katmai, display at least 12 vents that define a linear volcanic front trending N65??E. The 1912 vent and adjacent dacite domes are disposed parallel to the front and ca. 4 km behind it. Mount Griggs, 10 km behind the front, is more potassic than other centers, taps isotopically more depleted source materials, and reflects a wholly independent magmatic plumbing system. Geochemical differences among the stratovolcanoes, characteristically small eruptive volumes ( < 0.1 to 0.4 km3), and the dominance of andesite and low-SiO2 dacite suggest complex crustal reservoirs, not large integrated magma chambers. Linear fractures just outside the 1912 vent strike nearly normal to the volcanic front and may reflect dike transport of magma previously stored beneath Trident 3-5 km away. Caldera collapse at Mount Katmai may have taken place in response to hydraulic transfer of Katmai magma toward Novarupta via reservoir components beneath Trident. The voluminous 1912 eruption (12-15 km3 DRE) was also unusual in producing high-silica rhyolite (6-9 km3 DRE), a composition rare in this arc and on volcanic fronts in general. Isotopic data indicate that rhyolite genesis involved little assimilation of sedimentary rocks, pre-Tertiary plutonic rocks, or hydrothermally altered rocks of any age. Trace-element data suggest nonetheless that the rhyolite contains a nontrivial crustal contribution, most likely partial melts of Late Cenozoic arc-intrusive rocks. Because the three compositions (77%, 66-64.5%, and 61.5-58.5% SiO2) that intermingled in 1912 vented both concurrently and repeatedly (after eruptive pauses hours in duration), the compositional gaps between them must have been intrinsic to the reservoir, not merely effects of withdrawal dynamics. ?? 1987 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of Volcanology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF01080359","issn":"02588900","usgsCitation":"Hildreth, W., 1987, New perspectives on the eruption of 1912 in the valley of ten thousand smokes, Katmai National Park, Alaska: Bulletin of Volcanology, v. 49, no. 5, p. 680-693, https://doi.org/10.1007/BF01080359.","startPage":"680","endPage":"693","numberOfPages":"14","costCenters":[],"links":[{"id":205639,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF01080359"},{"id":225626,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a65fae4b0c8380cd72cc5","contributors":{"authors":[{"text":"Hildreth, W. 0000-0002-7925-4251","orcid":"https://orcid.org/0000-0002-7925-4251","contributorId":100487,"corporation":false,"usgs":true,"family":"Hildreth","given":"W.","affiliations":[],"preferred":false,"id":367819,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014185,"text":"70014185 - 1987 - Solid-state 13C NMR studies of dissolved organic matter in pore waters from different depositional environments","interactions":[],"lastModifiedDate":"2025-03-14T22:17:29.036504","indexId":"70014185","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2958,"text":"Organic Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Solid-state 13C NMR studies of dissolved organic matter in pore waters from different depositional environments","docAbstract":"Dissolved organic matter (DOM) in pore waters from sediments of a number of different depositional environments was isolated by ultrafiltration using membranes with a nominal molecular weight cutoff of 500. This > 500 molecular weight DOM represents 70–98% of the total DOM in these pore waters. We determined the gross chemical structure of this material using both solid-state 13C nuclear magnetic resonance spectroscopy and elemental analysis.
Our results show that the DOM in these pore waters appears to exist as two major types: one type dominated by carbohydrates and paraffinic structures and the second dominated by paraffinic and aromatic structures. We suggest that the dominance of one or the other structural type of DOM in the pore water depends on the relative oxidizing/reducing nature of the sediments as well as the source of the detrital organic matter. Under dominantly anaerobic conditions carbohydrates in the sediments are degraded by bacteria and accumulate in the pore water as DOM. However, little or no degradation of lignin occurs under these conditions. In contrast, sediments thought to be predominantly aerobic in character have DOM with diminished carbohydrate and enhanced aromatic character. The aromatic structures in the DOM from these sediments are thought to arise from the degradation of lignin. The large amounts of paraffinic structures in both types of DOM may be due to the degradation of unidentified paraffinic materials in algal or bacterial remains.
","language":"English","publisher":"Elsevier","doi":"10.1016/0146-6380(87)90029-5","usgsCitation":"Orem, W.H., and Hatcher, P.G., 1987, Solid-state 13C NMR studies of dissolved organic matter in pore waters from different depositional environments: Organic Geochemistry, v. 11, no. 2, p. 73-82, https://doi.org/10.1016/0146-6380(87)90029-5.","productDescription":"10 p.","startPage":"73","endPage":"82","costCenters":[],"links":[{"id":225558,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b923ce4b08c986b319d96","contributors":{"authors":[{"text":"Orem, William H. 0000-0003-4990-0539 borem@usgs.gov","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":577,"corporation":false,"usgs":true,"family":"Orem","given":"William","email":"borem@usgs.gov","middleInitial":"H.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":367806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hatcher, Patrick G.","contributorId":93625,"corporation":false,"usgs":true,"family":"Hatcher","given":"Patrick","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":367807,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1017346,"text":"1017346 - 1987 - Follow that bird!","interactions":[],"lastModifiedDate":"2017-08-26T15:17:57","indexId":"1017346","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1157,"text":"California Waterfowl","active":true,"publicationSubtype":{"id":10}},"title":"Follow that bird!","docAbstract":"No abstract available at this time","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"California Waterfowl","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Miller, M.R., Takekawa, J.Y., and Fleskes, J., 1987, Follow that bird!: California Waterfowl, v. 13, no. 2.","productDescription":"p. 5","startPage":"5","numberOfPages":"5","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":132395,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d6e4b07f02db5de56b","contributors":{"authors":[{"text":"Miller, M. R.","contributorId":19104,"corporation":false,"usgs":true,"family":"Miller","given":"M.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":324746,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Takekawa, John Y. 0000-0003-0217-5907 john_takekawa@usgs.gov","orcid":"https://orcid.org/0000-0003-0217-5907","contributorId":176168,"corporation":false,"usgs":true,"family":"Takekawa","given":"John","email":"john_takekawa@usgs.gov","middleInitial":"Y.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":324747,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleskes, J. P.","contributorId":98661,"corporation":false,"usgs":true,"family":"Fleskes","given":"J. P.","affiliations":[],"preferred":false,"id":324748,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70186630,"text":"70186630 - 1987 - Feeding ecology of Alcidae in the eastern North Pacific Ocean","interactions":[],"lastModifiedDate":"2017-04-06T12:05:10","indexId":"70186630","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Feeding ecology of Alcidae in the eastern North Pacific Ocean","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Seabirds: Feeding biology and role in marine ecosystems","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Cambridge University Press","isbn":"0-521-30178-5","usgsCitation":"Vermeer, K., Sealy, S., and Sanger, G., 1987, Feeding ecology of Alcidae in the eastern North Pacific Ocean, chap. of Seabirds: Feeding biology and role in marine ecosystems, p. 189-277.","productDescription":"89 p.","startPage":"189","endPage":"277","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":339319,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58e7540ee4b09da6799c0cce","contributors":{"editors":[{"text":"Croxall, J.P.","contributorId":88555,"corporation":false,"usgs":true,"family":"Croxall","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":690094,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Vermeer, K.","contributorId":78444,"corporation":false,"usgs":true,"family":"Vermeer","given":"K.","email":"","affiliations":[],"preferred":false,"id":690095,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sealy, S.G.","contributorId":59908,"corporation":false,"usgs":true,"family":"Sealy","given":"S.G.","affiliations":[],"preferred":false,"id":690096,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanger, G.A.","contributorId":179091,"corporation":false,"usgs":false,"family":"Sanger","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":690097,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70186895,"text":"70186895 - 1987 - Development and evaluation of a system for tracking wildlife by satellite","interactions":[],"lastModifiedDate":"2018-05-06T11:04:13","indexId":"70186895","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Development and evaluation of a system for tracking wildlife by satellite","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Herbivore nutrition research: Research papers presented at the second International symposium on the nutrition of herbivores","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Second International Symposium on the Nutrition of Herbivores","conferenceDate":"July 6-10, 1987","conferenceLocation":"Brisbane, Australia","language":"English","publisher":"Australian Society of Animal Production","usgsCitation":"Fancy, S., Pank, L., Douglas, D., Curby, C.H., Garner, G.W., Amstrup, S.C., and Regelin, W.L., 1987, Development and evaluation of a system for tracking wildlife by satellite, in Herbivore nutrition research: Research papers presented at the second International symposium on the nutrition of herbivores, Brisbane, Australia, July 6-10, 1987.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":339688,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58f08e65e4b06911a29fa88a","contributors":{"editors":[{"text":"Rose, Mary","contributorId":190860,"corporation":false,"usgs":false,"family":"Rose","given":"Mary","email":"","affiliations":[],"preferred":false,"id":690913,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Fancy, S.G.","contributorId":8957,"corporation":false,"usgs":true,"family":"Fancy","given":"S.G.","affiliations":[],"preferred":false,"id":690906,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pank, L.F.","contributorId":20027,"corporation":false,"usgs":true,"family":"Pank","given":"L.F.","affiliations":[],"preferred":false,"id":690907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Douglas, David C. 0000-0003-0186-1104 ddouglas@usgs.gov","orcid":"https://orcid.org/0000-0003-0186-1104","contributorId":150115,"corporation":false,"usgs":true,"family":"Douglas","given":"David C.","email":"ddouglas@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":690908,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Curby, Catherine H.","contributorId":189722,"corporation":false,"usgs":false,"family":"Curby","given":"Catherine","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":690909,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"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":690910,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Amstrup, Steven C.","contributorId":67034,"corporation":false,"usgs":false,"family":"Amstrup","given":"Steven","email":"","middleInitial":"C.","affiliations":[{"id":13182,"text":"Polar Bears International","active":true,"usgs":false}],"preferred":false,"id":690911,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Regelin, Wayne L.","contributorId":111763,"corporation":false,"usgs":false,"family":"Regelin","given":"Wayne","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":690912,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":5222168,"text":"5222168 - 1987 - Environmental pollutant and necropsy data for ospreys from the eastern United States, 1975-1982","interactions":[],"lastModifiedDate":"2022-12-05T17:05:40.070542","indexId":"5222168","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Environmental pollutant and necropsy data for ospreys from the eastern United States, 1975-1982","docAbstract":"Twenty-three ospreys (Pandion haliaetus) found dead or moribund in the eastern United States during 1975–1982 were necropsied and selected tissues were analyzed for organo-chlorines and metals. Major causes or factors contributing to death were trauma, impact injuries, and emaciation. DDE was detected in 96% of the osprey carcasses, DDD in 65%, DDT and heptachlor epoxide in 13%, dieldrin, oxychlordane, and cis-nonachlor in 35%, cis-chlordane in 52%, trans-nonachlor in 45%, and PCB's in 83%. Carcasses of immature ospreys from the Chesapeake Bay had significantly lower concentrations of DDE, DDD + DDT, cis-chlordane, and PCB's than carcasses of adults from the same area. Concentrations of some organochlorines in ospreys from the Chesapeake Bay declined significantly from 1971–1973 to 1975–1982. Significant differences in concentrations of certain metals in the ospreys' livers were noted between time periods, and sex and age groups for birds from the Chesapeake Bay. During 1975–1982, adults had significantly lower concentrations of chromium, copper, and arsenic than immatures and nestlings, and adult males had higher mercury concentrations than adult females. Adult females had lower zinc concentrations in 1975–1982 than in 1971–1973. Immatures and nestlings had higher concentrations of chromium and lead in 1975–1982 than in 1971–1973. A slightly elevated concentration of chromium (1.7 ppm) or arsenic (3.2 ppm) was found in the livers of individual ospreys. Several ospreys had elevated concentrations of mercury in their livers; two ospreys had more than 20 ppm which may have contributed to their deaths.
","language":"English","publisher":"Wildlife Disease Association","doi":"10.7589/0090-3558-23.2.279","usgsCitation":"Wiemeyer, S.N., Schmeling, S.K., and Anderson, A., 1987, Environmental pollutant and necropsy data for ospreys from the eastern United States, 1975-1982: Journal of Wildlife Diseases, v. 23, no. 2, p. 279-291, https://doi.org/10.7589/0090-3558-23.2.279.","productDescription":"13 p.","startPage":"279","endPage":"291","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":480087,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.7589/0090-3558-23.2.279","text":"Publisher Index Page"},{"id":198836,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Eastern United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.673828125,\n 36.38591277287651\n ],\n [\n -74.8828125,\n 38.61687046392973\n ],\n [\n -70.3125,\n 41.244772343082076\n ],\n [\n -70.400390625,\n 42.74701217318067\n ],\n [\n -66.533203125,\n 44.77793589631623\n ],\n [\n -67.939453125,\n 46.49839225859763\n ],\n [\n -69.345703125,\n 47.45780853075031\n ],\n [\n -72.158203125,\n 45.521743896993634\n ],\n [\n -77.783203125,\n 43.77109381775651\n ],\n [\n -80.595703125,\n 42.032974332441405\n ],\n [\n -81.123046875,\n 39.70718665682654\n ],\n [\n -84.19921875,\n 38.61687046392973\n ],\n [\n -82.08984375,\n 37.020098201368114\n ],\n [\n -75.673828125,\n 36.38591277287651\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"23","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9be4b07f02db65dc0a","contributors":{"authors":[{"text":"Wiemeyer, Stanley N.","contributorId":78279,"corporation":false,"usgs":true,"family":"Wiemeyer","given":"Stanley","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":335690,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmeling, Shelia K.","contributorId":98673,"corporation":false,"usgs":false,"family":"Schmeling","given":"Shelia","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":335691,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, Allen","contributorId":167065,"corporation":false,"usgs":false,"family":"Anderson","given":"Allen","email":"","affiliations":[],"preferred":false,"id":335689,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70171389,"text":"70171389 - 1987 - Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence","interactions":[],"lastModifiedDate":"2016-05-31T09:33:19","indexId":"70171389","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence","docAbstract":"Regression models to predict baseflow alkalinity from basin hydrogeology were developed and verified for headwater streams on the Laurel Hill anticline in southwestern Pennsylvania. Predicted baseflow alkalinities were then used to estimate sensitivity to acidification and presence of trout (Salvelinus fontinalis) populations for 61 headwater streams. Sensitivity classifications were verified by surveying trout populations. Geologic variables relating to the carbonate rock burial depth, extent of carbonate rock recharge areas, and length of stream channel flowing through effluent carbonate rock outcrops were much more useful in predicting baseflow alkalinity than areal extent of carbonate rocks. Baseflow alkalinity was not well related to status of trout populations on these anticlinal basins, especially on noneffluent basins where bedrock dip exceeded surface slope.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1987.tb00781.x","usgsCitation":"DeWalle, D.R., Dinicola, R., and Sharpe, W.E., 1987, Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence: Journal of the American Water Resources Association, v. 23, no. 1, p. 29-35, https://doi.org/10.1111/j.1752-1688.1987.tb00781.x.","productDescription":"7 p.","startPage":"29","endPage":"35","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":321870,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"574eb5dbe4b0ee97d51a83f0","contributors":{"authors":[{"text":"DeWalle, David R.","contributorId":23291,"corporation":false,"usgs":true,"family":"DeWalle","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":630842,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dinicola, Richard S. 0000-0003-4222-294X dinicola@usgs.gov","orcid":"https://orcid.org/0000-0003-4222-294X","contributorId":352,"corporation":false,"usgs":true,"family":"Dinicola","given":"Richard S.","email":"dinicola@usgs.gov","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":630843,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sharpe, William E.","contributorId":169553,"corporation":false,"usgs":false,"family":"Sharpe","given":"William","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":630844,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70175348,"text":"70175348 - 1987 - Benthic ecology and heavy metal accumulation","interactions":[],"lastModifiedDate":"2016-08-05T13:27:43","indexId":"70175348","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5163,"text":"NOAA Estuary of the Month Seminar Series","active":true,"publicationSubtype":{"id":10}},"title":"Benthic ecology and heavy metal accumulation","docAbstract":"The benthos of San Francisco Bay (the community of invertebrates living in bottom sediments) is an important source of food for fish, birds, and humans, and is dominated by exotic species introduced during the past 130 years. These species are largely small, hardy, short-lived, rapidly-reproducing species (much like weeds) whose distributions and abundances vary widely in both space and time. As a result, they appear resilient in the face of both natural and human-induced disturbances.
","largerWorkTitle":"San Francisco Bay – Issues, resources, status, and management","language":"English","publisher":"National Oceanic and Atmospheric Administration","usgsCitation":"Nichols, F., 1987, Benthic ecology and heavy metal accumulation: NOAA Estuary of the Month Seminar Series, v. 6, p. 65-68.","productDescription":"4 p.","startPage":"65","endPage":"68","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":326142,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57a5b8b5e4b0ebae89b78861","contributors":{"editors":[{"text":"Goodrich, D. M.","contributorId":173478,"corporation":false,"usgs":false,"family":"Goodrich","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":644829,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Nichols, F.H.","contributorId":88020,"corporation":false,"usgs":true,"family":"Nichols","given":"F.H.","affiliations":[],"preferred":false,"id":644828,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70184739,"text":"70184739 - 1987 - Cumulative impacts of oil fields on northern Alaskan landscapes","interactions":[],"lastModifiedDate":"2017-03-10T17:06:14","indexId":"70184739","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Cumulative impacts of oil fields on northern Alaskan landscapes","docAbstract":"Proposed further developments on Alaska's Arctic Coastal Plain raise questions about cumulative effects on arctic tundra ecosystems of development of multiple large oil fields. Maps of historical changes to the Prudhoe Bay Oil Field show indirect impacts can lag behind planned developments by many years and the total area eventually disturbed can greatly exceed the planned area of construction. For example, in the wettest parts of the oil field (flat thaw-lake plains), flooding and thermokarst covered more than twice the area directly affected by roads and other construction activities. Protecting critical wildlife habitat is the central issue for cumulative impact analysis in northern Alaska. Comprehensive landscape planning with the use of geographic information system technology and detailed geobotanical maps can help identify and protect areas of high wildlife use.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.238.4828.757","usgsCitation":"Walker, D., Webber, P., Binnian, E.F., Everett, K., Lederer, N., Nordstrand, E., and Walker, M., 1987, Cumulative impacts of oil fields on northern Alaskan landscapes: Science, v. 238, no. 4828, p. 757-761, https://doi.org/10.1126/science.238.4828.757.","productDescription":"5 p.","startPage":"757","endPage":"761","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337404,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337405,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70184724","text":"Letter in response to this article (Robertson 1989, Impacts of petroleum development in the Arctic)"}],"country":"United States","state":"Alaska","otherGeospatial":"Arctic National Wildlife Refuge","volume":"238","issue":"4828","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c952e4b0f37a93ee9b8e","contributors":{"authors":[{"text":"Walker, D.A.","contributorId":82484,"corporation":false,"usgs":false,"family":"Walker","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":682807,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Webber, P.J.","contributorId":25351,"corporation":false,"usgs":false,"family":"Webber","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":682808,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Binnian, Emily F.","contributorId":34090,"corporation":false,"usgs":true,"family":"Binnian","given":"Emily","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":682809,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Everett, K.R.","contributorId":188454,"corporation":false,"usgs":false,"family":"Everett","given":"K.R.","email":"","affiliations":[],"preferred":false,"id":682810,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lederer, N.D.","contributorId":139151,"corporation":false,"usgs":false,"family":"Lederer","given":"N.D.","email":"","affiliations":[],"preferred":false,"id":682811,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nordstrand, E.A.","contributorId":139152,"corporation":false,"usgs":false,"family":"Nordstrand","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":682812,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Walker, M.D.","contributorId":31937,"corporation":false,"usgs":true,"family":"Walker","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":682813,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70014229,"text":"70014229 - 1987 - Use of focal mechanisms to determine stress: A control study.","interactions":[],"lastModifiedDate":"2024-06-25T13:41:43.749612","indexId":"70014229","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Use of focal mechanisms to determine stress: A control study.","docAbstract":"To allow focal mechanisms to be inverted for the stress field requires a different inversion algorithm than for slickenside data because focal mechanisms do not represent fault slip data unless one can decide which nodal plane is the fault plane. If one can decide which nodal plane is the fault plane, then the focal mechanisms can be inverted with the slickenside inversion algorithm. This decision cannot always be made, so algorithms for inverting focal mechanisms for the stress field are studied. These algorithms either use both of the possible fault planes or attempt to choose the correct fault plane while determining the stress tensor. Simulated focal mechanisms are made from slickenside data and used to provide a control study for the focal mechanism inversion algorithms. The results of this control study show that focal mechanisms can be inverted to find the best stress tensor, but the resolution is decreased unless the fault planes can be picked a priori. The resolution can also be increased by including constraints on the magnitude of the tangential traction on the fault plane. Therefore, using focal mechanisms to study small variations in the stress field requires that other data (e.g., studies of the hypocenters, surface faulting, or structural information concerning the region) be introduced to pick which of the nodal planes is the fault plane. This study also introduces the method of bootstrap resampling to the statistics of this problem. The non-Gaussian nature of the data makes the nonparametric formulation of the bootstrap approach ideal for this problem.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB092iB01p00357","issn":"01480227","usgsCitation":"Michael, A., 1987, Use of focal mechanisms to determine stress: A control study.: Journal of Geophysical Research Solid Earth, v. 92, no. B1, p. 357-368, https://doi.org/10.1029/JB092iB01p00357.","productDescription":"12 p.","startPage":"357","endPage":"368","numberOfPages":"12","costCenters":[],"links":[{"id":226141,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"B1","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bbf10e4b08c986b329931","contributors":{"authors":[{"text":"Michael, A.J. 0000-0002-2403-5019","orcid":"https://orcid.org/0000-0002-2403-5019","contributorId":52192,"corporation":false,"usgs":true,"family":"Michael","given":"A.J.","affiliations":[],"preferred":false,"id":367904,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7000098,"text":"7000098 - 1987 - The Exclusive Economic Zone: an exciting new frontier","interactions":[],"lastModifiedDate":"2013-01-15T15:26:16","indexId":"7000098","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","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":"The Exclusive Economic Zone: an exciting new frontier","language":"ENGLISH","doi":"10.3133/7000098","usgsCitation":"McGregor, B.A., and Offield, T.W., 1987, The Exclusive Economic Zone: an exciting new frontier: General Interest Publication, 20 p. : col. ill., col. maps ; 24 cm., https://doi.org/10.3133/7000098.","productDescription":"20 p. : col. ill., col. maps ; 24 cm.","costCenters":[],"links":[{"id":196123,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":265721,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://hdl.handle.net/2027/uc1.31822006514806?urlappend=%3Bseq=5"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c894","contributors":{"authors":[{"text":"McGregor, Bonnie A.","contributorId":61022,"corporation":false,"usgs":true,"family":"McGregor","given":"Bonnie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":344087,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Offield, Terry W.","contributorId":15196,"corporation":false,"usgs":true,"family":"Offield","given":"Terry","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":344086,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014270,"text":"70014270 - 1987 - Probability theory versus simulation of petroleum potential in play analysis","interactions":[],"lastModifiedDate":"2012-03-12T17:19:29","indexId":"70014270","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":796,"text":"Annals of Operations Research","active":true,"publicationSubtype":{"id":10}},"title":"Probability theory versus simulation of petroleum potential in play analysis","docAbstract":"An analytic probabilistic methodology for resource appraisal of undiscovered oil and gas resources in play analysis is presented. This play-analysis methodology is a geostochastic system for petroleum resource appraisal in explored as well as frontier areas. An objective was to replace an existing Monte Carlo simulation method in order to increase the efficiency of the appraisal process. Underlying the two methods is a single geologic model which considers both the uncertainty of the presence of the assessed hydrocarbon and its amount if present. The results of the model are resource estimates of crude oil, nonassociated gas, dissolved gas, and gas for a geologic play in terms of probability distributions. The analytic method is based upon conditional probability theory and a closed form solution of all means and standard deviations, along with the probabilities of occurrence. ?? 1987 J.C. Baltzer A.G., Scientific Publishing Company.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Annals of Operations Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Baltzer Science Publishers","publisherLocation":"Baarn/Kluwer Academic Publishers","doi":"10.1007/BF02187102","issn":"02545330","usgsCitation":"Crovelli, R., 1987, Probability theory versus simulation of petroleum potential in play analysis: Annals of Operations Research, v. 8, no. 1, p. 363-381, https://doi.org/10.1007/BF02187102.","startPage":"363","endPage":"381","numberOfPages":"19","costCenters":[],"links":[{"id":205653,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02187102"},{"id":225763,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8cbbe4b0c8380cd7e869","contributors":{"authors":[{"text":"Crovelli, R. A.","contributorId":40969,"corporation":false,"usgs":true,"family":"Crovelli","given":"R. A.","affiliations":[],"preferred":false,"id":367996,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014242,"text":"70014242 - 1987 - Mid-Holocene climate in Northern Minnesota","interactions":[],"lastModifiedDate":"2013-01-26T07:14:27","indexId":"70014242","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","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":"Mid-Holocene climate in Northern Minnesota","docAbstract":"Study of Holocene ostracodes and diatoms from Elk Lake, in North-Central Minnesota, indicates that the local climate of the mid-Holocene can be subdivided into three intervals. Throughout interval 1 (ca. 7800 to 6700 yr B.P.), climate was colder and much drier than today. During intervals 2 and 3 (ca. 6700 to 4000 yr B.P.) average mean-annual air temperatures approached the modern mean (3.7??C), but warm summers persisted throughout interval 2, whereas during interval 3 warm summers fell into discrete episodes. Furthermore, average mean-annual precipitation was about 85 and 90% of modern during intervals 2 and 3, respectively. Transition times between the principal intervals were less than 50 yr. The expected effects of a retreating Laurentide Ice Sheet that initially maintained a winter-style circulation, followed by transitional climate states, and finally a near-modern circulation pattern may explain these local climatic events. ?? 1987.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netheralnds","doi":"10.1016/0033-5894(87)90064-0","issn":"00335894","usgsCitation":"Forester, R.M., Delorme, L., and Bradbury, J., 1987, Mid-Holocene climate in Northern Minnesota: Quaternary Research, v. 28, no. 2, p. 263-273, https://doi.org/10.1016/0033-5894(87)90064-0.","startPage":"263","endPage":"273","numberOfPages":"11","costCenters":[],"links":[{"id":266529,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0033-5894(87)90064-0"},{"id":225366,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a56b8e4b0c8380cd6d797","contributors":{"authors":[{"text":"Forester, R. M.","contributorId":76332,"corporation":false,"usgs":true,"family":"Forester","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":367926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Delorme, L.D.","contributorId":63176,"corporation":false,"usgs":true,"family":"Delorme","given":"L.D.","email":"","affiliations":[],"preferred":false,"id":367925,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bradbury, J.P.","contributorId":14431,"corporation":false,"usgs":true,"family":"Bradbury","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":367924,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001285,"text":"1001285 - 1987 - Responses of three prairie ground squirrel species, Spermophilus franklinii, S. richardsonii, and S. tridecemlineatus, to duck eggs","interactions":[],"lastModifiedDate":"2023-11-14T12:30:30.947163","indexId":"1001285","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1163,"text":"Canadian Field-Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Responses of three prairie ground squirrel species, Spermophilus franklinii, S. richardsonii, and S. tridecemlineatus, to duck eggs","docAbstract":"Franklin's Ground Squirrels (Spermophilus franklinii) preyed on eggs in 29 of 30 tests in which they were exposed to two Mallard (Anas platyrhynchos) or two Blue-winged Teal (A. discors) eggs and their discovery of eggs was confirmed. No Richardson's (S. richardsonii) or Thirteen-lined (S. tridecemlineatus) ground squirrels preyed on eggs in 104 and 54 similar tests, respectively. Franklin's Ground Squirrels exposed to clutches of six duck eggs placed in simulated nests preyed on all such clutches. Predation on simulated nests began soon after eggs were discovered, but predation of all eggs often took more than one day to complete.","language":"English","publisher":"Ottawa Field-Naturalists' Club","usgsCitation":"Sargeant, A., Sovada, M., and Greenwood, R.J., 1987, Responses of three prairie ground squirrel species, Spermophilus franklinii, S. richardsonii, and S. tridecemlineatus, to duck eggs: Canadian Field-Naturalist, v. 101, no. 1, p. 95-97.","productDescription":"3 p.","startPage":"95","endPage":"97","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":422559,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.biodiversitylibrary.org/part/355863"},{"id":128788,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"101","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db6277ee","contributors":{"authors":[{"text":"Sargeant, A.B.","contributorId":13171,"corporation":false,"usgs":true,"family":"Sargeant","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":310805,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sovada, M.A.","contributorId":54534,"corporation":false,"usgs":true,"family":"Sovada","given":"M.A.","affiliations":[],"preferred":false,"id":310806,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Greenwood, R. 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One spacing interval, (2.0 ?? 0.3)0.5D, or an integer multiple of it, dominates most basin rings. Three analytical approaches yield similar results from 296 remapped or newly mapped rings of 67 multi-ringed basins: least-squares of rank-grouped rings, least-squares of rank and ring diameter for each basin, and averaged ratios of adjacent rings. Analysis of 106 rings of 53 two-ring basins by the first and third methods yields an integer multiple (2 ??) of 2.00.5D. There are two exceptions: (1) Rings adjacent to the main ring of multi-ring basins are consistently spaced at a slightly, but significantly, larger interval, (2.1 ?? 0.3)0.5D; (2) The 88 rings of 44 protobasins (large peak-plus-inner-ring craters) are spaced at an entirely different interval (3.3 ?? 0.6)0.5D. The statistically constant and target-invariant spacing of so many rings suggests that this characteristic may constrain formational models of impact basins on the terrestrial planets. The key elements of such a constraint include: (1) ring positions may not have been located by the same process(es) that formed ring topography; (2) ring location and emplacement of ring topography need not be coeval; (3) ring location, but not necessarily the mode of ring emplacement, reflects one process that operated at the time of impact; and (4) the process yields similarly-disposed topographic features that are spatially discrete at 20.5D intervals, or some multiple, rather than continuous. These four elements suggest that some type of wave mechanism dominates the location, but not necessarily the formation, of basin rings. The waves may be standing, rather than travelling. The ring topography itself may be emplaced at impact by this and/or other mechanisms and may reflect additional, including post-impact, influences. ?? 1987 D. Reidel Publishing Company.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth, Moon and Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00054060","issn":"01679295","usgsCitation":"Pike, R., and Spudis, P.D., 1987, Basin-ring spacing on the Moon, Mercury, and Mars: Earth, Moon and Planets, v. 39, no. 2, p. 129-194, https://doi.org/10.1007/BF00054060.","startPage":"129","endPage":"194","numberOfPages":"66","costCenters":[],"links":[{"id":205683,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00054060"},{"id":226139,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059efefe4b0c8380cd4a516","contributors":{"authors":[{"text":"Pike, R.J.","contributorId":72814,"corporation":false,"usgs":true,"family":"Pike","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":367901,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Spudis, P. 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I demonstrate that the moderately abundant benthic foraminifers constitute early Maestrichtian boreal assemblages common to Canada and northern Europe. Paleoenvironmental analysis indicates that deposition took place in outer neritic settings (50 to 150m). The Ocean Point benthic foraminiferal assemblages contain species that migrated from the US Gulf Coast, North American Interior and Europe during the Campanian, and from Europe during the Maestrichtian. These faunal affinities suggest that seaways connected the Arctic to the North American Interior and Atlantic during the Campanian and that a shallow seaway connected the Arctic to the Atlantic during the early Maestrichtian. - from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Foraminiferal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/gsjfr.17.4.344","issn":"00961191","usgsCitation":"McDougall, K., 1987, Maestrichtian benthic foraminifers from Ocean Point, North Slope, Alaska ( USA).: Journal of Foraminiferal Research, v. 17, no. 4, p. 344-366, https://doi.org/10.2113/gsjfr.17.4.344.","startPage":"344","endPage":"366","numberOfPages":"23","costCenters":[],"links":[{"id":226207,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269894,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gsjfr.17.4.344"}],"volume":"17","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4b27e4b0c8380cd6932a","contributors":{"authors":[{"text":"McDougall, K.","contributorId":106260,"corporation":false,"usgs":true,"family":"McDougall","given":"K.","email":"","affiliations":[],"preferred":false,"id":367907,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":96477,"text":"96477 - 1987 - Design and construction of a tethered, floating radio-tag assembly for manatees","interactions":[],"lastModifiedDate":"2012-02-02T00:03:51","indexId":"96477","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Design and construction of a tethered, floating radio-tag assembly for manatees","docAbstract":"No abstract available at this time","language":"English","usgsCitation":"Rathbun, G.B., Reid, J., and Bourassa, J., 1987, Design and construction of a tethered, floating radio-tag assembly for manatees, 46 p.","productDescription":"46 p.","startPage":"46","numberOfPages":"46","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":127075,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa9e4b07f02db667eaa","contributors":{"authors":[{"text":"Rathbun, G. 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Among fish with 'otolith ages' of 4 or more, the percentages having identical 'scale ages' were 1% in Lake Ontario, 35% in Lake Huron, and 56% in Lake Michigan. Among alewives with different otolith and scale ages, the percentages with discrepancies of 3 years or more were 51% in Lake Ontario, 23% in Lake Huron, and 6% in Lake Michigan. Among the three populations, variation in the magnitude of age disagreements were perhaps due to the different mortality rates in each lake, whereas variation in the frequency of disagreements appeared to be due to different ratios of food to fish in each lake. Previously reported age compositions and rates of mortality and production for Great Lakes alewives derived from scales have probably been inaccurate to various degrees.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Age and growth of fish","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"Iowa State University Press","publisherLocation":"Ames, IA","usgsCitation":"O’Gorman, R., Barwick, D.H., and Bowen, C., 1987, Discrepancies between ages determined from scales and otoliths for alewives from the Great Lakes, chap. of Age and growth of fish, p. 203-210.","productDescription":"p. 203-210","startPage":"203","endPage":"210","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":126957,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a93a","contributors":{"editors":[{"text":"Summerfelt, R.D.","contributorId":113743,"corporation":false,"usgs":true,"family":"Summerfelt","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":504080,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Hall, G.E.","contributorId":113030,"corporation":false,"usgs":true,"family":"Hall","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":504079,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"O’Gorman, Robert rogorman@usgs.gov","contributorId":3451,"corporation":false,"usgs":true,"family":"O’Gorman","given":"Robert","email":"rogorman@usgs.gov","affiliations":[],"preferred":true,"id":295352,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barwick, D. 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Results of the Director's [scientific] Task Force on the NPS Role in Protecting Biological Diversity, Sept. 1986, Report to the Director","interactions":[],"lastModifiedDate":"2012-02-02T00:03:57","indexId":"96439","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"The Role of the National Park Service in Protecting Biological Diversity. Results of the Director's [scientific] Task Force on the NPS Role in Protecting Biological Diversity, Sept. 1986, Report to the Director","docAbstract":"No abstract available at this time","language":"English","usgsCitation":"Schonewald-Cox, C., 1987, The Role of the National Park Service in Protecting Biological Diversity. Results of the Director's [scientific] Task Force on the NPS Role in Protecting Biological Diversity, Sept. 1986, Report to the Director, 75 p.","productDescription":"75 p.","startPage":"75","numberOfPages":"75","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":128266,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac7e4b07f02db67ac53","contributors":{"authors":[{"text":"Schonewald-Cox, C.","contributorId":91433,"corporation":false,"usgs":true,"family":"Schonewald-Cox","given":"C.","affiliations":[],"preferred":false,"id":299651,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":96464,"text":"96464 - 1987 - Food habits of feral burros in Death Valley, California","interactions":[],"lastModifiedDate":"2012-02-02T00:03:52","indexId":"96464","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Food habits of feral burros in Death Valley, California","docAbstract":"No abstract available at this time","language":"English","publisher":"University of Nevada-Las Vegas Cooperative Park Studies Unit","publisherLocation":"Las Vegas, NV","usgsCitation":"Douglas, C.L., and Hiatt, H., 1987, Food habits of feral burros in Death Valley, California, 25 p.","productDescription":"25 p.","startPage":"25","numberOfPages":"25","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":127195,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae7fa","contributors":{"authors":[{"text":"Douglas, C. 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