{"pageNumber":"3515","pageRowStart":"87850","pageSize":"25","recordCount":184938,"records":[{"id":70020813,"text":"70020813 - 1998 - Density-dependent effects on growth, body size, and clutch size in Black Brant","interactions":[],"lastModifiedDate":"2017-03-16T09:20:05","indexId":"70020813","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Density-dependent effects on growth, body size, and clutch size in Black Brant","docAbstract":"<p><span>We documented gosling size in late summer, adult body size, and clutch size of known-age Black Brant (<i>Branta bernicla nigricans</i>) females nesting on the Tutakoke River colony between 1986 and 1995. During this period, the colony increased from 1,100 to &gt;5,000 nesting pairs. Gosling mass at 30 days of age declined from 764 ± SE of 13 g and 723 ± 15 g for males and females, respectively, in the 1986 cohort, to 665 ± 18 g and 579 ± 18 g in the 1994 cohort. Gosling size was directly negatively correlated with number of Black Brant broods. We detected no trend in adult body size for individuals from these cohorts; in fact, adults from the 1992 and 1994 cohorts had the largest overall masses. Clutch size increased with age from 3.4 eggs for 2-year-old females to 4.4 eggs for 5-year-old females. Clutch size declined during the study by 0.20 (3-year-old females) to 0.45 (2-year-old females) eggs. Clutch size did not decline between the 1986 and 1990 cohorts for females that were &gt;5 years old. Our results for clutch size and gosling size are similar to those recorded for Lesser Snow Geese (<i>Chen caerulescens caerulescens</i>). Our failure to detect a trend in adult body size, however, differs from the response of other geese to increasing population density. We interpret this difference in effects of density on adult size between Black Brant and other geese as an indication of stronger selection against the smallest individuals in Black Brant relative to other species of geese.</span></p>","language":"English","publisher":"American Ornithological Society","doi":"10.2307/4089410","issn":"00048038","usgsCitation":"Sedinger, J.S., Lindberg, M.S., Person, B.T., Eichholz, M., Herzog, M.P., and Flint, P.L., 1998, Density-dependent effects on growth, body size, and clutch size in Black Brant: The Auk, v. 115, no. 3, p. 613-620, https://doi.org/10.2307/4089410.","productDescription":"8 p.","startPage":"613","endPage":"620","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":487371,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/4089410","text":"Publisher Index Page"},{"id":230114,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Tutakoke River","volume":"115","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059feabe4b0c8380cd4ee6a","contributors":{"authors":[{"text":"Sedinger, James S.","contributorId":84861,"corporation":false,"usgs":false,"family":"Sedinger","given":"James","email":"","middleInitial":"S.","affiliations":[{"id":12742,"text":"University of Nevada Reno","active":true,"usgs":false}],"preferred":false,"id":387615,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindberg, Mark S.","contributorId":63292,"corporation":false,"usgs":false,"family":"Lindberg","given":"Mark","email":"","middleInitial":"S.","affiliations":[{"id":7211,"text":"University of Alaska, Fairbanks","active":true,"usgs":false}],"preferred":false,"id":387616,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Person, Brian T.","contributorId":107457,"corporation":false,"usgs":false,"family":"Person","given":"Brian","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":387617,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Eichholz, Michael W.","contributorId":130963,"corporation":false,"usgs":false,"family":"Eichholz","given":"Michael W.","affiliations":[{"id":7180,"text":"Coop Wildlife Res Lab, Ctr for Ecology, S IL Univ Carbondale, IL","active":true,"usgs":false}],"preferred":false,"id":387613,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Herzog, Mark P. 0000-0002-5203-2835 mherzog@usgs.gov","orcid":"https://orcid.org/0000-0002-5203-2835","contributorId":131110,"corporation":false,"usgs":true,"family":"Herzog","given":"Mark","email":"mherzog@usgs.gov","middleInitial":"P.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":387612,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Flint, Paul L. 0000-0002-8758-6993 pflint@usgs.gov","orcid":"https://orcid.org/0000-0002-8758-6993","contributorId":3284,"corporation":false,"usgs":true,"family":"Flint","given":"Paul","email":"pflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":387614,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70020982,"text":"70020982 - 1998 - Effects of wet- and dry-season fires on Jacquemontia curtisii, a south Florida pine forest endemic","interactions":[],"lastModifiedDate":"2022-07-18T15:52:25.296157","indexId":"70020982","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2821,"text":"Natural Areas Journal","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Effects of wet- and dry-season fires on <i>Jacquemontia curtisii</i>, a south Florida pine forest endemic","title":"Effects of wet- and dry-season fires on Jacquemontia curtisii, a south Florida pine forest endemic","docAbstract":"South Florida pine forests have a diverse endemic flora that has evolved under the influence of recurrent fire. We studied the response of Jacquemontia curtisii Peter ex Hallier f. (pineland clustervine), a perennial herbaceous member of that flora, to experimental fires during wet and dry seasons. In each of three populations, three treatments were applied: wet-season (June) prescribed fire, dry-season (January) prescribed fire, and an unburned control. Flowering, fruiting, and seedling establishment were followed for up to one year. Mortality of adult plants was twice as great after wet-season burns than after dry-season burns even though fire temperatures were higher in the dry-season burns. Within a season of burning, mortality was greater for the more severely burned plants or the smaller plants. Wet-season burns produced over three times more flowers than not burning, in spite of mortality of more than half the plants. Burning stimulated germination from the soil seed bank. Dry-season burns resulted in five times more seedlings than wet-season burns and more of these seedlings were alive one year after the burn. It is likely that the long-term viability of Jacquemontia curtisii populations is favored by diversity in fire season and severity.","language":"English","publisher":"Natural Areas Association","issn":"08858608","usgsCitation":"Spier, L., and Snyder, J., 1998, Effects of wet- and dry-season fires on Jacquemontia curtisii, a south Florida pine forest endemic: Natural Areas Journal, v. 18, no. 4, p. 350-357.","productDescription":"8 p.","startPage":"350","endPage":"357","costCenters":[],"links":[{"id":230044,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403907,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/43911788"}],"country":"United States","state":"Florida","otherGeospatial":"Big Cypress National Preserve, Raccoon Point","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.3980484008789,\n              25.775778914534246\n            ],\n            [\n              -81.2435531616211,\n              25.775778914534246\n            ],\n            [\n              -81.2435531616211,\n              25.916673406629275\n            ],\n            [\n              -81.3980484008789,\n              25.916673406629275\n            ],\n            [\n              -81.3980484008789,\n              25.775778914534246\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"18","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0841e4b0c8380cd51a42","contributors":{"authors":[{"text":"Spier, L.P.","contributorId":61979,"corporation":false,"usgs":true,"family":"Spier","given":"L.P.","email":"","affiliations":[],"preferred":false,"id":388187,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snyder, J.R.","contributorId":96622,"corporation":false,"usgs":true,"family":"Snyder","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":388188,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020417,"text":"70020417 - 1998 - Kerogen maturation and incipient graphitization of hydrocarbon source rocks in the Arkoma Basin, Oklahoma and Arkansas: A combined petrographic and Raman spectrometric study","interactions":[],"lastModifiedDate":"2012-03-12T17:19:45","indexId":"70020417","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Kerogen maturation and incipient graphitization of hydrocarbon source rocks in the Arkoma Basin, Oklahoma and Arkansas: A combined petrographic and Raman spectrometric study","docAbstract":"Dispersed kerogen of the Woodford-Chattanooga and Atoka Formations from the subsurface of the Arkoma Basin show a wide range of thermal maturities (0.38 to 6.1% R(o)) indicating thermal conditions ranging from diagenesis to incipient rock metamorphism. Raman spectral analysis reveals systematic changes of both the first- and second-order spectrum with increasing thermal maturity. These changes include a pronounced increase in the D/O peak height ratio accompanied by a narrowing of the D peak, a gradual decrease in the D/O peak width ratio, and a shift of both peaks toward higher wave numbers. Second-order Raman peaks, though less intensive, also show systematic peak shifting as a function of R(o). These empirical results underscore the high potential of Raman spectrometry as a fast and reliable geothermometer of mature to supermature hydrocarbon source rocks, and as an indicator of thermal maturity levels within the anchizone.Dispersed kerogen of the Woodford-Chattanooga and Atoka Formations from the subsurface of the Arkoma Basin show a wide range of thermal maturities (0.38 to 6.1% Ro) indicating thermal conditions ranging from diagenesis to incipient rock metamorphism. Raman spectral analysis reveals systematic changes of both the first- and second-order spectrum with increasing thermal maturity. These changes include a pronounced increase in the D/O peak height ratio accompanied by a narrowing of the D peak, a gradual decrease in the D/O peak width ratio, and a shift of both peaks toward higher wave numbers. Second-order Raman peaks, though less intensive, also show systematic peak shifting as a function of Ro. These empirical results underscore the high potential of Raman spectrometry as a fast and reliable geothermometer of mature to supermature hydrocarbon source rocks, and as an indicator of thermal maturity levels within the anchizone.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Organic Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Sci Ltd","publisherLocation":"Exeter, United Kingdom","doi":"10.1016/S0146-6380(98)00021-7","issn":"01466380","usgsCitation":"Spotl, C., Houseknecht, D., and Jaques, R., 1998, Kerogen maturation and incipient graphitization of hydrocarbon source rocks in the Arkoma Basin, Oklahoma and Arkansas: A combined petrographic and Raman spectrometric study: Organic Geochemistry, v. 28, no. 9-10, p. 535-542, https://doi.org/10.1016/S0146-6380(98)00021-7.","startPage":"535","endPage":"542","numberOfPages":"8","costCenters":[],"links":[{"id":206868,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0146-6380(98)00021-7"},{"id":231020,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"9-10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4074e4b0c8380cd64d9a","contributors":{"authors":[{"text":"Spotl, C.","contributorId":11342,"corporation":false,"usgs":true,"family":"Spotl","given":"C.","affiliations":[],"preferred":false,"id":386157,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":386158,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jaques, R.C.","contributorId":63195,"corporation":false,"usgs":true,"family":"Jaques","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":386159,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70020440,"text":"70020440 - 1998 - A model of northern pintail productivity and population growth rate","interactions":[],"lastModifiedDate":"2017-03-06T17:30:35","indexId":"70020440","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"A model of northern pintail productivity and population growth rate","docAbstract":"<p><span>Our objective was to synthesize individual components of reproductive ecology into a single estimate of productivity and to assess the relative effects of survival and productivity on population dynamics. We used information on nesting ecology, renesting potential, and duckling survival of northern pintails (<i>Anas acuta</i>) collected on the Yukon-Kuskokwim Delta (Y-K Delta), Alaska, 1991-95, to model the number of ducklings produced under a range of nest success and duckling survival probabilities. Using average values of 25% nest success, 11% duckling survival, and 56% renesting probability from our study population, we calculated that all young in our population were produced by 13% of the breeding females, and that early-nesting females produced more young than later-nesting females. Further, we calculated, on average, that each female produced only 0.16 young females/nesting season. We combined these results with estimates of first-year and adult survival to examine the growth rate (X) of the population and the relative contributions of these demographic parameters to that growth rate. Contrary to aerial survey data, the population projection model suggests our study population is declining rapidly (X = 0.6969). The relative effects on population growth rate were 0.1175 for reproductive success, 0.1175 for first-year survival, and 0.8825 for adult survival. Adult survival had the greatest influence on X for our population, and this conclusion was robust over a range of survival and productivity estimates. Given published estimates of annual survival for adult females (61%), our model suggested nest success and duckling survival need to increase to approximately 40% to achieve population stability. We discuss reasons for the apparent discrepancy in population trends between our model and aerial surveys in terms of bias in productivity and survival estimates.</span></p>","language":"English","publisher":"Wiley","doi":"10.2307/3802565","issn":"0022541X","usgsCitation":"Flint, P.L., Grand, J.B., and Rockwell, R.F., 1998, A model of northern pintail productivity and population growth rate: Journal of Wildlife Management, v. 62, no. 3, p. 1110-1118, https://doi.org/10.2307/3802565.","productDescription":"9 p.","startPage":"1110","endPage":"1118","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":231333,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon-Kuskokwim Delta","volume":"62","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e480e4b0c8380cd46687","contributors":{"authors":[{"text":"Flint, Paul L. 0000-0002-8758-6993 pflint@usgs.gov","orcid":"https://orcid.org/0000-0002-8758-6993","contributorId":3284,"corporation":false,"usgs":true,"family":"Flint","given":"Paul","email":"pflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":386225,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grand, J. Barry 0000-0002-3576-4567 barry_grand@usgs.gov","orcid":"https://orcid.org/0000-0002-3576-4567","contributorId":579,"corporation":false,"usgs":true,"family":"Grand","given":"J.","email":"barry_grand@usgs.gov","middleInitial":"Barry","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":386223,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rockwell, Robert F.","contributorId":172752,"corporation":false,"usgs":false,"family":"Rockwell","given":"Robert","email":"","middleInitial":"F.","affiliations":[{"id":6989,"text":"American Museum of Natural History","active":true,"usgs":false}],"preferred":false,"id":386224,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70020814,"text":"70020814 - 1998 - Technical note assessing the accuracy of Landsat Thematic Mapper classification using double sampling","interactions":[],"lastModifiedDate":"2024-02-14T17:15:54.643897","indexId":"70020814","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Technical note assessing the accuracy of Landsat Thematic Mapper classification using double sampling","docAbstract":"<p><span>Double sampling was used to provide a cost efficient estimate of the accuracy of a Landsat Thematic Mapper (TM) classification map of a scene located in the Rocky Mountain National Park, Colorado. In the first phase, 200 sample points were randomly selected to assess the accuracy between Landsat TM data and aerial photography. The overall accuracy and Kappa statistic were 49.5 per cent and 32.5 per cent, respectively. In the second phase, 25 sample points identified in the first phase were selected using stratified random sampling and located in the field. This information was used to correct for misclassification errors associated with the first phase samples. The overall accuracy and Kappa statistic increased to 59.6 per cent and 45.6 per cent, respectively.</span></p>","language":"English","publisher":"Taylor & Francis","publisherLocation":"London, United Kingdom","doi":"10.1080/014311698214857","issn":"01431161","usgsCitation":"Kalkhan, M.A., Reich, R., and Stohlgren, T., 1998, Technical note assessing the accuracy of Landsat Thematic Mapper classification using double sampling: International Journal of Remote Sensing, v. 19, no. 11, p. 2049-2060, https://doi.org/10.1080/014311698214857.","productDescription":"12 p.","startPage":"2049","endPage":"2060","numberOfPages":"12","costCenters":[],"links":[{"id":230115,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"11","noUsgsAuthors":false,"publicationDate":"2010-11-25","publicationStatus":"PW","scienceBaseUri":"5059ede6e4b0c8380cd49ab0","contributors":{"authors":[{"text":"Kalkhan, M. A.","contributorId":82655,"corporation":false,"usgs":false,"family":"Kalkhan","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":387620,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reich, R.M.","contributorId":68258,"corporation":false,"usgs":true,"family":"Reich","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":387619,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":387618,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70020536,"text":"70020536 - 1998 - How organisms do the right thing: The attractor hypothesis","interactions":[],"lastModifiedDate":"2016-01-28T08:55:10","indexId":"70020536","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1206,"text":"Chaos","active":true,"publicationSubtype":{"id":10}},"title":"How organisms do the right thing: The attractor hypothesis","docAbstract":"Neo-Darwinian theory is highly successful at explaining the emergence of adaptive traits over successive generations. However, there are reasons to doubt its efficacy in explaining the observed, impressively detailed adaptive responses of organisms to day-to-day changes in their surroundings. Also, the theory lacks a clear mechanism to account for both plasticity and canalization. In effect, there is a growing sentiment that the neo-Darwinian paradigm is incomplete, that something more than genetic structure, mutation, genetic drift, and the action of natural selection is required to explain organismal behavior. In this paper we extend the view of organisms as complex self-organizing entities by arguing that basic physical laws, coupled with the acquisitive nature of organisms, makes adaptation all but tautological. That is, much adaptation is an unavoidable emergent property of organisms' complexity and, to some a significant degree, occurs quite independently of genomic changes wrought by natural selection. For reasons that will become obvious, we refer to this assertion as the attractor hypothesis. The arguments also clarify the concept of \"adaptation.\" Adaptation across generations, by natural selection, equates to the (game theoretic) maximization of fitness (the success with which one individual produces more individuals), while self-organizing based adaptation, within generations, equates to energetic efficiency and the matching of intake and biosynthesis to need. Finally, we discuss implications of the attractor hypothesis for a wide variety of genetical and physiological phenomena, including genetic architecture, directed mutation, genetic imprinting, paramutation, hormesis, plasticity, optimality theory, genotype-phenotype linkage and puncuated equilibrium, and present suggestions for tests of the hypothesis. ?? 1998 American Institute of Physics.","language":"English","publisher":"AIP Publishing","doi":"10.1063/1.166355","issn":"10541500","usgsCitation":"Emlen, J., Freeman, D., Mills, A., and Graham, J., 1998, How organisms do the right thing: The attractor hypothesis: Chaos, v. 8, no. 3, p. 717-726, https://doi.org/10.1063/1.166355.","productDescription":"10 p.","startPage":"717","endPage":"726","numberOfPages":"10","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":230950,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265845,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1063/1.166355"}],"volume":"8","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3253e4b0c8380cd5e700","contributors":{"authors":[{"text":"Emlen, J.M.","contributorId":63979,"corporation":false,"usgs":true,"family":"Emlen","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":386593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Freeman, D.C.","contributorId":21309,"corporation":false,"usgs":true,"family":"Freeman","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":386591,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mills, A.","contributorId":33085,"corporation":false,"usgs":true,"family":"Mills","given":"A.","email":"","affiliations":[],"preferred":false,"id":386592,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Graham, J.H.","contributorId":77322,"corporation":false,"usgs":true,"family":"Graham","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":386594,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70020815,"text":"70020815 - 1998 - Phanerozoic stratigraphy of Northwind Ridge, magnetic anomalies in the Canada Basin, and the geometry and timing of rifting in the Amerasia Basin, Arctic Ocean","interactions":[],"lastModifiedDate":"2023-12-20T13:18:14.494509","indexId":"70020815","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Phanerozoic stratigraphy of Northwind Ridge, magnetic anomalies in the Canada Basin, and the geometry and timing of rifting in the Amerasia Basin, Arctic Ocean","docAbstract":"<p>Cores from Northwind Ridge, a high-standing continental fragment in the Chukchi borderland of the oceanic Amerasia basin, Arctic Ocean, contain representatives of every Phanerozoic system except the Silurian and Devonian systems.</p><p>Cambrian and Ordovician shallow-water marine carbonates in Northwind Ridge are similar to basement rocks beneath the Sverdrup basin of the Canadian Arctic Archipelago. Upper Mississippian(?) to Permian shelf carbonate and spicularite and Triassic turbidite and shelf lutite resemble coeval strata in the Sverdrup basin and the western Arctic Alaska basin (Hanna trough). These resemblances indicate that Triassic and older strata in southern Northwind Ridge were attached to both Arctic Canada and Arctic Alaska prior to the rifting that created the Amerasia basin. Late Jurassic marine lutite in Northwind Ridge was structurally isolated from coeval strata in the Sverdrup and Arctic Alaska basins by rift shoulders and grabens, and is interpreted to be a riftogenic deposit. This lutite may be the oldest deposit in the Canada basin. A cap of late Cenomanian or Turonian rhyodacite air-fall ash that lacks terrigenous material shows that Northwind Ridge was structurally isolated from the adjacent continental margins by earliest Late Cretaceous time.</p><p>Closing Amerasia basin by conjoining sea-floor magnetic anomalies beneath the Canada basin or by uniting the pre-Jurassic strata of Northwind Ridge with kindred sections in the Sverdrup basin and Hanna trough yield similar tectonic reconstructions. Together with the orientation and age of rift-margin structures, these data suggest that (1) prior to opening of the Amerasia basin, both northern Alaska and the continental ridges of the Chukchi borderland were part of North America, (2) the extension that created the Amerasia basin formed rift-margin grabens beginning in Early Jurassic time and new oceanic crust probably beginning in Late Jurassic or early Neocomian time.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1998)110<0801:PSONRM>2.3.CO;2","issn":"00167606","usgsCitation":"Grantz, A., Clark, D., Phillips, R., Srivastava, S., Blome, C., Gray, L., Haga, H., Mamet, B.L., McIntyre, D., McNeil, D.H., Mickey, M., Mullen, M.W., Murchey, B., Ross, C., Stevens, C., Silberling, N.J., Wall, J., and Willard, D., 1998, Phanerozoic stratigraphy of Northwind Ridge, magnetic anomalies in the Canada Basin, and the geometry and timing of rifting in the Amerasia Basin, Arctic Ocean: Geological Society of America Bulletin, v. 110, no. 6, p. 801-820, https://doi.org/10.1130/0016-7606(1998)110<0801:PSONRM>2.3.CO;2.","productDescription":"20 p.","startPage":"801","endPage":"820","numberOfPages":"20","costCenters":[],"links":[{"id":230154,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"110","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7869e4b0c8380cd786ba","contributors":{"authors":[{"text":"Grantz, A.","contributorId":60378,"corporation":false,"usgs":true,"family":"Grantz","given":"A.","email":"","affiliations":[],"preferred":false,"id":387633,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clark, D.L.","contributorId":18131,"corporation":false,"usgs":true,"family":"Clark","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":387625,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Phillips, R. L.","contributorId":98289,"corporation":false,"usgs":true,"family":"Phillips","given":"R. L.","affiliations":[],"preferred":false,"id":387637,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Srivastava, S.P.","contributorId":89166,"corporation":false,"usgs":true,"family":"Srivastava","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":387636,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blome, C.D.","contributorId":60647,"corporation":false,"usgs":true,"family":"Blome","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":387634,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gray, L.-B.","contributorId":10171,"corporation":false,"usgs":true,"family":"Gray","given":"L.-B.","email":"","affiliations":[],"preferred":false,"id":387621,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Haga, H.","contributorId":57621,"corporation":false,"usgs":true,"family":"Haga","given":"H.","email":"","affiliations":[],"preferred":false,"id":387631,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Mamet, B. L.","contributorId":12886,"corporation":false,"usgs":true,"family":"Mamet","given":"B.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":387622,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"McIntyre, D.J.","contributorId":34960,"corporation":false,"usgs":true,"family":"McIntyre","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":387628,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"McNeil, D. H.","contributorId":46580,"corporation":false,"usgs":true,"family":"McNeil","given":"D.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":387629,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Mickey, M.B.","contributorId":28402,"corporation":false,"usgs":true,"family":"Mickey","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":387627,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mullen, M. W.","contributorId":15587,"corporation":false,"usgs":true,"family":"Mullen","given":"M.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":387623,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Murchey, B.I.","contributorId":59580,"corporation":false,"usgs":true,"family":"Murchey","given":"B.I.","email":"","affiliations":[],"preferred":false,"id":387632,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Ross, C.A.","contributorId":24948,"corporation":false,"usgs":true,"family":"Ross","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":387626,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Stevens, C.H.","contributorId":16102,"corporation":false,"usgs":true,"family":"Stevens","given":"C.H.","affiliations":[],"preferred":false,"id":387624,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Silberling, Norman J.","contributorId":102438,"corporation":false,"usgs":true,"family":"Silberling","given":"Norman","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":387638,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Wall, J.H.","contributorId":51046,"corporation":false,"usgs":true,"family":"Wall","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":387630,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Willard, Debra  A. 0000-0003-4878-0942","orcid":"https://orcid.org/0000-0003-4878-0942","contributorId":85982,"corporation":false,"usgs":true,"family":"Willard","given":"Debra  A.","affiliations":[],"preferred":false,"id":387635,"contributorType":{"id":1,"text":"Authors"},"rank":18}]}}
,{"id":70020535,"text":"70020535 - 1998 - Rocky 7 prototype Mars rover field geology experiments: 1. Lavic Lake and Sunshine volcanic field, California","interactions":[],"lastModifiedDate":"2024-07-31T15:36:14.65038","indexId":"70020535","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Rocky 7 prototype Mars rover field geology experiments: 1. Lavic Lake and Sunshine volcanic field, California","docAbstract":"<p><span>Experiments with the Rocky 7 rover were performed in the Mojave Desert to better understand how to conduct rover-based, long-distance (kilometers) geological traverses on Mars. The rover was equipped with stereo imaging systems for remote sensing science and hazard avoidance and&nbsp;</span><sup>57</sup><span>Fe Mössbauer and nuclear magnetic resonance spectrometers for in situ determination of mineralogy of unprepared rock and soil surfaces. Laboratory data were also obtained using the spectrometers and an X ray diffraction (XRD)/XRF instrument for unprepared samples collected from the rover sites. Simulated orbital and descent image data assembled for the test sites were found to be critical for assessing the geologic setting, formulating hypotheses to be tested with rover observations, planning traverses, locating the rover, and providing a regional context for interpretation of rover-based observations. Analyses of remote sensing and in situ observations acquired by the rover confirmed inferences made from orbital and simulated descent images that the Sunshine Volcanic Field is composed of basalt flows. Rover data confirmed the idea that Lavic Lake is a recharge playa and that an alluvial fan composed of sediments with felsic compositions has prograded onto the playa. Rover-based discoveries include the inference that the basalt flows are mantled with aeolian sediment and covered with a dense pavement of varnished basalt cobbles. Results demonstrate that the combination of rover remote sensing and in situ analytical observations will significantly increase our understanding of Mars and provide key connecting links between orbital and descent data and analyses of returned samples.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/98JE01768","issn":"01480227","usgsCitation":"Arvidson, R., Acton, C., Blaney, D., Bowman, J., Kim, S., Klingelhofer, G., Marshall, J., Niebur, C., Plescia, J., Saunders, R., and Ulmer, C., 1998, Rocky 7 prototype Mars rover field geology experiments: 1. Lavic Lake and Sunshine volcanic field, California: Journal of Geophysical Research E: Planets, v. 103, no. E10, p. 22671-22688, https://doi.org/10.1029/98JE01768.","productDescription":"18 p.","startPage":"22671","endPage":"22688","numberOfPages":"18","costCenters":[],"links":[{"id":479797,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/98je01768","text":"Publisher Index Page"},{"id":230949,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"103","issue":"E10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aae1ce4b0c8380cd8701c","contributors":{"authors":[{"text":"Arvidson, R. E.","contributorId":46666,"corporation":false,"usgs":true,"family":"Arvidson","given":"R. E.","affiliations":[],"preferred":false,"id":386585,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Acton, C.","contributorId":24521,"corporation":false,"usgs":true,"family":"Acton","given":"C.","affiliations":[],"preferred":false,"id":386583,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Blaney, D.","contributorId":72513,"corporation":false,"usgs":true,"family":"Blaney","given":"D.","email":"","affiliations":[],"preferred":false,"id":386590,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bowman, J.","contributorId":58046,"corporation":false,"usgs":true,"family":"Bowman","given":"J.","affiliations":[],"preferred":false,"id":386589,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kim, S.","contributorId":53120,"corporation":false,"usgs":true,"family":"Kim","given":"S.","email":"","affiliations":[],"preferred":false,"id":386587,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Klingelhofer, G.","contributorId":57195,"corporation":false,"usgs":true,"family":"Klingelhofer","given":"G.","email":"","affiliations":[],"preferred":false,"id":386588,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Marshall, J.","contributorId":45243,"corporation":false,"usgs":true,"family":"Marshall","given":"J.","email":"","affiliations":[],"preferred":false,"id":386584,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Niebur, C.","contributorId":51050,"corporation":false,"usgs":true,"family":"Niebur","given":"C.","affiliations":[],"preferred":false,"id":386586,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Plescia, J.","contributorId":20500,"corporation":false,"usgs":true,"family":"Plescia","given":"J.","affiliations":[],"preferred":false,"id":386582,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Saunders, R.S.","contributorId":14437,"corporation":false,"usgs":true,"family":"Saunders","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":386581,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Ulmer, C.T.","contributorId":7035,"corporation":false,"usgs":true,"family":"Ulmer","given":"C.T.","email":"","affiliations":[],"preferred":false,"id":386580,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70020819,"text":"70020819 - 1998 - Effect of groundwater springs on NO3− concentrations during summer in Catskill Mountain streams","interactions":[],"lastModifiedDate":"2018-03-16T10:01:07","indexId":"70020819","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Effect of groundwater springs on NO<sub>3</sub><sup>−</sup> concentrations during summer in Catskill Mountain streams","title":"Effect of groundwater springs on NO3− concentrations during summer in Catskill Mountain streams","docAbstract":"<p><span>Groundwater and stream water data collected at three headwater catchments in the Neversink River watershed indicate that base flow is sustained by groundwater from two sources: a shallow flow system within the till and soil and a deep flow system within bedrock fractures and bedding planes that discharges as perennial springs. Data from eight wells finished near the till/bedrock interface indicate that saturated conditions are not maintained in the shallow flow system during most summers. In contrast, the discharge of a perennial spring remained constant during two summer rainstorms, providing evidence that the deep flow system is disconnected from the shallow flow system in summer. Discharge from perennial springs was the principal source of streamflow in a headwater reach during low flow. Mean NO</span><sub>3</sub><sup>−</sup><span><span>&nbsp;</span>concentrations were 20–25 μmol L</span><sup>−1</sup><span><span>&nbsp;</span>in five perennial springs during the summer but only 5–10 μmol L</span><sup>−1</sup><span><span>&nbsp;</span>in shallow groundwater. Thus the deep flow system does not reflect typical NO</span><sub>3</sub><sup>−</sup><span><span>&nbsp;</span>concentrations in the soil during summer. A hydrologic budget at a headwater drainage reveals that March and late fall are the principal groundwater recharge periods. Residence time modeling based on analyses of<span>&nbsp;</span></span><sup>18</sup><span>O and<span>&nbsp;</span></span><sup>35</sup><span>S indicates that groundwater in the deep flow system is 6–22 months old. These data indicate that summer base flow largely originates from previous dormant seasons when available soil NO</span><sub>3</sub><sup>−</sup><span><span>&nbsp;</span>is greater. In these Catskill watersheds, high base flow concentrations of NO</span><sub>3</sub><sup>−</sup><span><span>&nbsp;</span>during summer do not provide sufficient evidence that the atmospheric N deposition rate exceeds the demand of terrestrial vegetation.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/98WR01282","usgsCitation":"Burns, D.A., Murdoch, P.S., Lawrence, G.B., and Michel, R.L., 1998, Effect of groundwater springs on NO3− concentrations during summer in Catskill Mountain streams: Water Resources Research, v. 34, no. 8, p. 1987-1996, https://doi.org/10.1029/98WR01282.","productDescription":"10 p.","startPage":"1987","endPage":"1996","costCenters":[],"links":[{"id":487361,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/98wr01282","text":"Publisher Index Page"},{"id":230195,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","volume":"34","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05e6e4b0c8380cd50ff8","contributors":{"authors":[{"text":"Burns, Douglas A. 0000-0001-6516-2869 daburns@usgs.gov","orcid":"https://orcid.org/0000-0001-6516-2869","contributorId":1237,"corporation":false,"usgs":true,"family":"Burns","given":"Douglas","email":"daburns@usgs.gov","middleInitial":"A.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":387650,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murdoch, Peter S. 0000-0001-9243-505X pmurdoch@usgs.gov","orcid":"https://orcid.org/0000-0001-9243-505X","contributorId":2453,"corporation":false,"usgs":true,"family":"Murdoch","given":"Peter","email":"pmurdoch@usgs.gov","middleInitial":"S.","affiliations":[{"id":5067,"text":"Northeast Regional Director's Office","active":true,"usgs":true}],"preferred":true,"id":387651,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lawrence, Gregory B. 0000-0002-8035-2350 glawrenc@usgs.gov","orcid":"https://orcid.org/0000-0002-8035-2350","contributorId":867,"corporation":false,"usgs":true,"family":"Lawrence","given":"Gregory","email":"glawrenc@usgs.gov","middleInitial":"B.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":387652,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Michel, Robert L. rlmichel@usgs.gov","contributorId":823,"corporation":false,"usgs":true,"family":"Michel","given":"Robert","email":"rlmichel@usgs.gov","middleInitial":"L.","affiliations":[{"id":148,"text":"Branch of Regional Research-Western Region","active":false,"usgs":true}],"preferred":true,"id":387653,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70020820,"text":"70020820 - 1998 - Estimation of density of mongooses with capture-recapture and distance sampling","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70020820","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of density of mongooses with capture-recapture and distance sampling","docAbstract":"We captured mongooses (Herpestes javanicus) in live traps arranged in trapping webs in Antigua, West Indies, and used capture-recapture and distance sampling to estimate density. Distance estimation and program DISTANCE were used to provide estimates of density from the trapping-web data. Mean density based on trapping webs was 9.5 mongooses/ha (range, 5.9-10.2/ha); estimates had coefficients of variation ranging from 29.82-31.58% (X?? = 30.46%). Mark-recapture models were used to estimate abundance, which was converted to density using estimates of effective trap area. Tests of model assumptions provided by CAPTURE indicated pronounced heterogeneity in capture probabilities and some indication of behavioral response and variation over time. Mean estimated density was 1.80 mongooses/ha (range, 1.37-2.15/ha) with estimated coefficients of variation of 4.68-11.92% (X?? = 7.46%). Estimates of density based on mark-recapture data depended heavily on assumptions about animal home ranges; variances of densities also may be underestimated, leading to unrealistically narrow confidence intervals. Estimates based on trap webs require fewer assumptions, and estimated variances may be a more realistic representation of sampling variation. Because trap webs are established easily and provide adequate data for estimation in a few sample occasions, the method should be efficient and reliable for estimating densities of mongooses.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00222372","usgsCitation":"Corn, J., and Conroy, M., 1998, Estimation of density of mongooses with capture-recapture and distance sampling: Journal of Mammalogy, v. 79, no. 3, p. 1009-1015.","startPage":"1009","endPage":"1015","numberOfPages":"7","costCenters":[],"links":[{"id":230233,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"79","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b82e4b0c8380cd52758","contributors":{"authors":[{"text":"Corn, J.L.","contributorId":72964,"corporation":false,"usgs":true,"family":"Corn","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":387654,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conroy, M.J.","contributorId":84690,"corporation":false,"usgs":true,"family":"Conroy","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":387655,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020441,"text":"70020441 - 1998 - Greenland Sea Odden sea ice feature: Intra-annual and interannual variability","interactions":[],"lastModifiedDate":"2024-04-30T16:26:22.417077","indexId":"70020441","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2315,"text":"Journal of Geophysical Research C: Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Greenland Sea Odden sea ice feature: Intra-annual and interannual variability","docAbstract":"<p><span>The “Odden” is a large sea ice feature that forms in the east Greenland Sea that may protrude eastward to 5°E from the main sea ice pack (at about 8°W) between 73° and 77°N. It generally forms at the beginning of the winter season and can cover 300,000 km</span><sup>2</sup><span>. Throughout the winter the outer edge of the Odden may advance and retreat by several hundred kilometers on timescales of a few days to weeks. Satellite passive microwave observations from 1978 through 1995 provide a continuous record of the spatial and temporal variations of this extremely dynamic phenomenon. Aircraft synthetic aperture radar, satellite passive microwave, and ship observations in the Odden show that the Odden consists of new ice types, rather than older ice types advected eastward from the main pack. The 17-year record shows both strong interannual and intra-annual variations in Odden extent and temporal behavior. For example, in 1983 the Odden was weak, in 1984 the Odden did not occur, and in 1985 the Odden returned late in the season. An analysis of the ice area and extent time series derived from the satellite passive microwave observations along with meteorological data from the International Arctic Buoy Program (IABP) determined the meteorological forcing associated with Odden growth, maintenance, and decay. The key meteorological parameters that are related to the rapid ice formation and decay associated with the Odden are, in order of importance, air temperature, wind speed, and wind direction. Oceanographic parameters must play an important role in controlling Odden formation, but it is not yet possible to quantify this role because of a lack of long-term oceanographic observations.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/98JC00375","issn":"01480227","usgsCitation":"Shuchman, R., Josberger, E., Russel, C., Fischer, K., Johannessen, O., Johannessen, J., and Gloersen, P., 1998, Greenland Sea Odden sea ice feature: Intra-annual and interannual variability: Journal of Geophysical Research C: Oceans, v. 103, no. C6, p. 12709-12724, https://doi.org/10.1029/98JC00375.","productDescription":"16 p.","startPage":"12709","endPage":"12724","numberOfPages":"16","costCenters":[],"links":[{"id":489077,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/98jc00375","text":"Publisher Index Page"},{"id":231370,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"103","issue":"C6","noUsgsAuthors":false,"publicationDate":"1998-06-15","publicationStatus":"PW","scienceBaseUri":"505a2a6ce4b0c8380cd5b177","contributors":{"authors":[{"text":"Shuchman, R.A.","contributorId":27204,"corporation":false,"usgs":true,"family":"Shuchman","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":386228,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Josberger, E.G.","contributorId":61161,"corporation":false,"usgs":true,"family":"Josberger","given":"E.G.","email":"","affiliations":[],"preferred":false,"id":386232,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Russel, C.A.","contributorId":6219,"corporation":false,"usgs":true,"family":"Russel","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":386226,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fischer, K.W.","contributorId":11379,"corporation":false,"usgs":true,"family":"Fischer","given":"K.W.","email":"","affiliations":[],"preferred":false,"id":386227,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Johannessen, O.M.","contributorId":30766,"corporation":false,"usgs":true,"family":"Johannessen","given":"O.M.","email":"","affiliations":[],"preferred":false,"id":386229,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johannessen, J.","contributorId":44318,"corporation":false,"usgs":true,"family":"Johannessen","given":"J.","email":"","affiliations":[],"preferred":false,"id":386230,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gloersen, P.","contributorId":55961,"corporation":false,"usgs":true,"family":"Gloersen","given":"P.","affiliations":[],"preferred":false,"id":386231,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70020436,"text":"70020436 - 1998 - Magnitude and significance of carbon burial in lakes, reservoirs, and peatlands","interactions":[],"lastModifiedDate":"2024-01-17T00:41:00.921992","indexId":"70020436","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Magnitude and significance of carbon burial in lakes, reservoirs, and peatlands","docAbstract":"<div id=\"15578512\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>Globally, lakes are currently accumulating organic carbon (OC) at an estimated annual rate of about 42 Tgṁyr<sup>−1</sup>. Most of the OC in all but the most oligotrophic of these lakes is autochthonous, produced by primary production in the lakes. The sediments of reservoirs accumulate an additional 160 Tg annually, and peatlands contribute 96 Tg annually. These three carbon pools collectively cover less than 2% of the Earth's surface and constitute a carbon sink of about 300 Tgṁyr<sup>−1</sup>. Although the oceans cover 71% of the Earth's surface, they accumulate OC at a rate of only about 100 Tgṁyr<sup>−1</sup>.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1998)026<0535:MASOCB>2.3.CO;2","issn":"00917613","usgsCitation":"Dean, W., and Gorham, E., 1998, Magnitude and significance of carbon burial in lakes, reservoirs, and peatlands: Geology, v. 26, no. 6, p. 535-538, https://doi.org/10.1130/0091-7613(1998)026<0535:MASOCB>2.3.CO;2.","productDescription":"4 p.","startPage":"535","endPage":"538","numberOfPages":"4","costCenters":[],"links":[{"id":231259,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4bece4b0c8380cd69884","contributors":{"authors":[{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":386213,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gorham, E.","contributorId":35501,"corporation":false,"usgs":true,"family":"Gorham","given":"E.","email":"","affiliations":[],"preferred":false,"id":386212,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020822,"text":"70020822 - 1998 - Effect of calcium carbonate saturation of seawater on coral calcification","interactions":[],"lastModifiedDate":"2012-03-12T17:19:51","indexId":"70020822","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1844,"text":"Global and Planetary Change","active":true,"publicationSubtype":{"id":10}},"title":"Effect of calcium carbonate saturation of seawater on coral calcification","docAbstract":"The carbonate chemistry of seawater is usually not considered to be an important factor influencing calcium-carbonate-precipitation by corals because surface seawater is supersaturated with respect to aragonite. Recent reports, however, suggest that it could play a major role in the evolution and biogeography of recent corals. We investigated the calcification rates of five colonies of the zooxanthellate coral Stylophora pistillata in synthetic seawater using the alkalinity anomaly technique. Changes in aragonite saturation from 98% to 585% were obtained by manipulating the calcium concentration. The results show a nonlinear increase in calcification rate as a function of aragonite saturation level. Calcification increases nearly 3-fold when aragonite saturation increases from 98% to 390%, i.e., close to the typical present saturation state of tropical seawater. There is no further increase of calcification at saturation values above this threshold. Preliminary data suggest that another coral species, Acropora sp., displays a similar behaviour. These experimental results suggest: (l) that the rate of calcification does not change significantly within the range of saturation levels corresponding to the last glacial-interglacial cycle, and (2) that it may decrease significantly in the future as a result of the decrease in the saturation level due to anthropogenic release of CO2 into the atmosphere. Experimental studies that control environmental conditions and seawater composition provide unique opportunities to unravel the response of corals to global environmental changes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Global and Planetary Change","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0921-8181(98)00035-6","issn":"09218181","usgsCitation":"Gattuso, J., Frankignoulle, M., Bourge, I., Romaine, S., and Buddemeier, R., 1998, Effect of calcium carbonate saturation of seawater on coral calcification: Global and Planetary Change, v. 18, no. 1-2, p. 37-46, https://doi.org/10.1016/S0921-8181(98)00035-6.","startPage":"37","endPage":"46","numberOfPages":"10","costCenters":[],"links":[{"id":206566,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0921-8181(98)00035-6"},{"id":230235,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05c6e4b0c8380cd50f51","contributors":{"authors":[{"text":"Gattuso, J.-P.","contributorId":61194,"corporation":false,"usgs":true,"family":"Gattuso","given":"J.-P.","email":"","affiliations":[],"preferred":false,"id":387665,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Frankignoulle, M.","contributorId":39968,"corporation":false,"usgs":true,"family":"Frankignoulle","given":"M.","email":"","affiliations":[],"preferred":false,"id":387663,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bourge, I.","contributorId":10948,"corporation":false,"usgs":true,"family":"Bourge","given":"I.","email":"","affiliations":[],"preferred":false,"id":387662,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Romaine, S.","contributorId":50684,"corporation":false,"usgs":true,"family":"Romaine","given":"S.","email":"","affiliations":[],"preferred":false,"id":387664,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Buddemeier, R. W.","contributorId":86492,"corporation":false,"usgs":true,"family":"Buddemeier","given":"R. W.","affiliations":[],"preferred":false,"id":387666,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70020428,"text":"70020428 - 1998 - Development and application of a marine sediment pore-water toxicity test using <i>Ulva fasciata</i> zoospores","interactions":[],"lastModifiedDate":"2016-11-10T15:08:52","indexId":"70020428","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Development and application of a marine sediment pore-water toxicity test using <i>Ulva fasciata</i> zoospores","docAbstract":"<p><span>An acute (96 h) pore-water toxicity test protocol using germination and growth of </span><i>Ulva fasciata</i><span>zoospores as endpoints was developed to test the toxicity of marine and estuarine sediment pore-water samples. Tests with an organic toxicant (sodium dodecyl sulfate; SDS), three metals (Cd, Cu, and Zn), and ammonia (NH</span><sub>3</sub><span>) were conducted to determine zoospore sensitivity. Zoospore germination and gametophyte growth were as sensitive to SDS as sea urchin (</span><i>Arbacia punctulata</i><span>) fertilization and embryological development. Zoospore sensitivity to metals was greater than or comparable to that of adult macroalgae. Zoospores were less sensitive to NH</span><sub>3</sub><span>than were other commonly used toxicity test organisms. Test results using this algal assay with sediment pore-water samples with high NH</span><sub>3</sub><span> concentrations were compared with results from sea urchin fertilization and embryological development tests for the same samples. </span><i>Ulva fasciata</i><span>zoospore germination was not affected by samples with high NH</span><sub>3</sub><span> concentrations that were toxic in both sea urchin tests. Zoospore tolerance of NH</span><sub>3</sub><span> and sensitivity to other contaminants indicate that their response may be useful in toxicity identification evaluation studies with pore-water samples that contain high concentrations of unionized NH</span><sub>3</sub><span>.</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/etc.5620170524","issn":"07307268","usgsCitation":"Hooten, R.L., and Carr, R.S., 1998, Development and application of a marine sediment pore-water toxicity test using <i>Ulva fasciata</i> zoospores: Environmental Toxicology and Chemistry, v. 17, no. 5, p. 932-940, https://doi.org/10.1002/etc.5620170524.","productDescription":"9 p.","startPage":"932","endPage":"940","numberOfPages":"9","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":231180,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"5","noUsgsAuthors":false,"publicationDate":"1998-05-01","publicationStatus":"PW","scienceBaseUri":"505a0017e4b0c8380cd4f5ae","contributors":{"authors":[{"text":"Hooten, Russell L.","contributorId":176809,"corporation":false,"usgs":false,"family":"Hooten","given":"Russell","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":386192,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carr, R. Scott","contributorId":14025,"corporation":false,"usgs":true,"family":"Carr","given":"R.","email":"","middleInitial":"Scott","affiliations":[],"preferred":false,"id":386193,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020416,"text":"70020416 - 1998 - Foraging characteristics of larval bluegill sunfish and larval longear sunfish in the Kanawha River, West Virginia","interactions":[],"lastModifiedDate":"2012-03-12T17:19:45","indexId":"70020416","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2299,"text":"Journal of Freshwater Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Foraging characteristics of larval bluegill sunfish and larval longear sunfish in the Kanawha River, West Virginia","docAbstract":"We determined spatial and temporal foraging characteristics of larval bluegill sunfish (Lepomis macrochirus) and longear sunfish (Lepomis megalotis) in the upper Kanawha River, West Virginia during the summer of 1989. Stomach contents were examined among habitat types (i.e., main channel, main-channel border, and shoreline habitats) and depth (surface, middle, and bottom). Diet of larval bluegill sunfish was dominated by Chironomidae, temporally and spatially. Chironomidae dominated larval longear sunfish diet in main channel and main-channel border collections from all three depths. However, along the shoreline, larval longear sunfish diet was dominated by Cladocera.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Freshwater Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"02705060","usgsCitation":"Rider, S., and Margraf, F., 1998, Foraging characteristics of larval bluegill sunfish and larval longear sunfish in the Kanawha River, West Virginia: Journal of Freshwater Ecology, v. 13, no. 2, p. 221-228.","startPage":"221","endPage":"228","numberOfPages":"8","costCenters":[],"links":[{"id":231019,"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":"505a12f6e4b0c8380cd5447d","contributors":{"authors":[{"text":"Rider, S.J.","contributorId":31627,"corporation":false,"usgs":true,"family":"Rider","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":386155,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Margraf, F.J.","contributorId":47738,"corporation":false,"usgs":true,"family":"Margraf","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":386156,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020414,"text":"70020414 - 1998 - Black bear depredation on agricultural commodities in Massachusetts","interactions":[],"lastModifiedDate":"2012-03-12T17:19:45","indexId":"70020414","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3779,"text":"Wildlife Society Bulletin","onlineIssn":"1938-5463","printIssn":"0091-7648","active":true,"publicationSubtype":{"id":10}},"title":"Black bear depredation on agricultural commodities in Massachusetts","docAbstract":"We used response to a mail survey (n = 848) to evaluate the extent and severity of depredation by black bears (Ursus americanus) on agricultural commodities in Massachusetts and to assess producers' attitudes toward and tolerance of bear depredation. Damage abatement techniques were ranked for effectiveness by producers of corn, bees and honey, and livestock and dairy products. Results showed differences in perception of effects of bear depredation among commodity groups. Producers of corn and livestock and dairy products considered bear damage to be low to moderate in severity whereas beekeepers thought their losses were substantial or severe. Most estimates of economic loss were <$1,000 per year. Respondents considered bears to be an inconvenience, but thought they should remain a part of our natural heritage. There was no significant relationship between producers' experience with or economic dependence on their product and their attitude toward bears or their tolerance of bear damage. We conclude that there is need for effective education programs for agricultural producers, strengthened working relationships between producers and state fish and wildlife agencies, incorporation of producers' suggestions into management decisions, and investment in effective, economical, and long-term solutions to bear depredations for each affected commodity group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wildlife Society Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00917648","usgsCitation":"Jonker, S., Parkhurst, J., Field, R., and Fuller, T., 1998, Black bear depredation on agricultural commodities in Massachusetts: Wildlife Society Bulletin, v. 26, no. 2, p. 318-324.","startPage":"318","endPage":"324","numberOfPages":"7","costCenters":[],"links":[{"id":230979,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1d6e4b0c8380cd4ae5f","contributors":{"authors":[{"text":"Jonker, S.A.","contributorId":36319,"corporation":false,"usgs":true,"family":"Jonker","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":386150,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parkhurst, J.A.","contributorId":17008,"corporation":false,"usgs":true,"family":"Parkhurst","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":386149,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Field, R.","contributorId":105813,"corporation":false,"usgs":true,"family":"Field","given":"R.","affiliations":[],"preferred":false,"id":386152,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fuller, T.K.","contributorId":98252,"corporation":false,"usgs":true,"family":"Fuller","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":386151,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70020825,"text":"70020825 - 1998 - Water-resources optimization model for Santa Barbara, California","interactions":[],"lastModifiedDate":"2018-06-01T14:39:06","indexId":"70020825","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2501,"text":"Journal of Water Resources Planning and Management","active":true,"publicationSubtype":{"id":10}},"title":"Water-resources optimization model for Santa Barbara, California","docAbstract":"A simulation-optimization model has been developed for the optimal management of the city of Santa Barbara's water resources during a drought. The model, which links groundwater simulation with linear programming, has a planning horizon of 5 years. The objective is to minimize the cost of water supply subject to: water demand constraints, hydraulic head constraints to control seawater intrusion, and water capacity constraints. The decision variables are montly water deliveries from surface water and groundwater. The state variables are hydraulic heads. The drought of 1947-51 is the city's worst drought on record, and simulated surface-water supplies for this period were used as a basis for testing optimal management of current water resources under drought conditions. The simulation-optimization model was applied using three reservoir operation rules. In addition, the model's sensitivity to demand, carry over [the storage of water in one year for use in the later year(s)], head constraints, and capacity constraints was tested.","language":"English","publisher":"ASCE","doi":"10.1061/(ASCE)0733-9496(1998)124:5(252)","issn":"07339496","usgsCitation":"Nishikawa, T., 1998, Water-resources optimization model for Santa Barbara, California: Journal of Water Resources Planning and Management, v. 124, no. 5, p. 252-263, https://doi.org/10.1061/(ASCE)0733-9496(1998)124:5(252).","productDescription":"12 p.","startPage":"252","endPage":"263","numberOfPages":"12","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":229678,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":206418,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9496(1998)124:5(252)"}],"volume":"124","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bcedfe4b08c986b32e5e9","contributors":{"authors":[{"text":"Nishikawa, Tracy 0000-0002-7348-3838 tnish@usgs.gov","orcid":"https://orcid.org/0000-0002-7348-3838","contributorId":1515,"corporation":false,"usgs":true,"family":"Nishikawa","given":"Tracy","email":"tnish@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":387671,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1000761,"text":"1000761 - 1998 - Reproductive potential and fecundity of lake trout strains in southern and eastern waters of Lake Ontario, 1977-1994","interactions":[],"lastModifiedDate":"2016-04-04T13:59:50","indexId":"1000761","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Reproductive potential and fecundity of lake trout strains in southern and eastern waters of Lake Ontario, 1977-1994","docAbstract":"<p><span>We assessed the reproductive potential of various genetic strains of hatchery lake trout (</span><i>Salvelinus namaycush</i><span>) in southern and eastern Lake Ontario from indices of fecundity and indices of male abundance. Indices were constructed from catches of mature lake trout in gill nets during September 1980 to 1994 after correcting for mortality from sea lampreys (</span><i>Petromyzon marinus</i><span>) which occurred between September sampling and late fall spawning. Strain and age were assigned to individual lake trout based on clipped fins and maxillary bones or coded wire tags. Fecundity-length relationships for fish of the same age, determined from mature females collected in 1977 to 1981 and 1994, were not different (P&nbsp;&gt;&nbsp;0.05) among genetic strains. For all strains combined, fecundity-length relationships in 1977 to 1981 were not different among fish of various ages but in 1994, age-5 and -6 fish had fewer eggs (P&nbsp;&lt;&nbsp;0.003) than age-7 fish, and age-7 fish had fewer eggs (P&nbsp;&lt;&nbsp;0.003) than fish of age 8, 9, or 10. Annual indices of fecundity varied 19 fold and indices of mature males varied 11 fold; both indices were low in the early 1980s, increased sharply in the mid 1980s, and peaked in 1993. The strain which dominated fecundity and mature male indices shifted during the study from Seneca Lake strain to Lake Superior strain and then back to Seneca Lake strain. However, changes in either reproductive potential or genotypes do not appear responsible for the abrupt appearance of naturally-produced yearling lake trout throughout southern and eastern Lake Ontario in 1994&ndash;1995, the first widespread occurrence of juveniles produced by hatchery lake trout in Lake Ontario.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0380-1330(98)70805-6","usgsCitation":"O’Gorman, R., Elrod, J.H., and Schneider, C.P., 1998, Reproductive potential and fecundity of lake trout strains in southern and eastern waters of Lake Ontario, 1977-1994: Journal of Great Lakes Research, v. 24, no. 1, p. 131-144, https://doi.org/10.1016/S0380-1330(98)70805-6.","productDescription":"14 p.","startPage":"131","endPage":"144","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":133577,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a55e4b07f02db62c63f","contributors":{"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":309363,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Elrod, Joseph H.","contributorId":72737,"corporation":false,"usgs":true,"family":"Elrod","given":"Joseph","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":309365,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schneider, Clifford P.","contributorId":45251,"corporation":false,"usgs":true,"family":"Schneider","given":"Clifford","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":309364,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70020521,"text":"70020521 - 1998 - Organic carbon accumulation and preservation in surface sediments on the Peru margin","interactions":[],"lastModifiedDate":"2012-03-12T17:20:16","indexId":"70020521","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Organic carbon accumulation and preservation in surface sediments on the Peru margin","docAbstract":"Concentrations and characteristics of organic matter in surface sediments deposited under an intense oxygen-minimum zone on the Peru margin were studied in samples from deck-deployed box cores and push cores acquired by submersible on two transects spanning depths of 75 to 1000 m at 12??and 13.5??S. The source of organic matter to the seafloor in these areas is almost entirely marine material as confirmed by the narrow range of ??13C of organic carbon obtained in the present study (-20.3 to -21.6???; PDB) and the lack of any relationship between pyrolysis hydrogen index and carbon isotope composition. Organic carbon contents are highest (up to 16%) on the slope at depths between 75 and 350 m in sediments deposited under intermediate water masses with low dissolved oxygen concentrations (< 5 ??mol/kg). Even at these low concentrations of dissolved oxygen, however, the surface sediments that were recovered from these depths are dominantly unlaminated. Strong currents (up to 30 cm/s) associated with the poleward-flowing Peru Undercurrent were measured at depths between 160 and 300 m on both transects. The seafloor in this range of water depths is characterized by bedforms stabilized by bacterial mats, extensive authigenic mineral crusts, and (or) thick organic flocs. Constant advection of dissolved oxygen, although in low concentrations, active resuspension of surficial organic matter, activity of organisms, and transport of fine-grained sediment to and from more oxygenated zones all contribute to greater degradation and poorer initial preservation of organic matter than might be expected under oxygen-deficient conditions. Dissolved-oxygen concentrations ultimately may be the dominant affect on organic matter characteristics, but reworking of fine-grained sediment and organic matter by strong bottom currents and redeposition on the seafloor in areas of lower energy also exert important controls on organic carbon concentration and degree of oxidation in this region.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0009-2541(98)00120-X","issn":"00092541","usgsCitation":"Arthur, M., Dean, W., and Laarkamp, K., 1998, Organic carbon accumulation and preservation in surface sediments on the Peru margin: Chemical Geology, v. 152, no. 3-4, p. 273-286, https://doi.org/10.1016/S0009-2541(98)00120-X.","startPage":"273","endPage":"286","numberOfPages":"14","costCenters":[],"links":[{"id":206951,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0009-2541(98)00120-X"},{"id":231337,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"152","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6f8ee4b0c8380cd75b5b","contributors":{"authors":[{"text":"Arthur, M.A.","contributorId":24791,"corporation":false,"usgs":true,"family":"Arthur","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":386535,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":386537,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Laarkamp, K.","contributorId":74161,"corporation":false,"usgs":true,"family":"Laarkamp","given":"K.","email":"","affiliations":[],"preferred":false,"id":386536,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70020520,"text":"70020520 - 1998 - Tectonic Processes on Europa: Tidal Stresses, Mechanical Response, and Visible Features","interactions":[],"lastModifiedDate":"2012-03-12T17:20:16","indexId":"70020520","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1963,"text":"Icarus","active":true,"publicationSubtype":{"id":10}},"title":"Tectonic Processes on Europa: Tidal Stresses, Mechanical Response, and Visible Features","docAbstract":"Europa's orbital eccentricity, driven by the resonance with Io and Ganymede, results in \"diurnal\" tides (3.5-day period) and possibly in nonsynchronous rotation. Both diurnal variation and nonsynchronous rotation can create significant stress fields on Europa's surface, and both effects may produce cracking. Patterns and time sequences of apparent tectonic features on Europa include lineaments that correlate with both sources of stress, if we take into account nonsynchronous rotation, after initial crack formation, by amounts ranging up to several tens of degrees. For example, the crosscutting time sequence of features in the Cadmus and Minos Linea region is consistent with a combined diurnal and nonsynchronous tensile-stress field, as it evolves during tens of degrees of nonsynchronous rotation. Constraints on the rotation rate from comparing Voyager and Galileo images show that significant rotation requires 104yr, but could be fast enough to have allowed significant rotation since the last global resurfacing, even if such resurfacing was as recent as a few million years ago. Once cracking is initiated, diurnal tides work cracks so that they open and close daily. Although the daily effect is small, over 105yr double ridges could plausibly be built along the cracks with sizes and morphologies consistent with observed structures, according to a model in which underlying liquid water fills the open cracks, partially freezes, and is extruded during the daily closing of the cracks. Thus, several lines of observational and theoretical evidence can be integrated if we assume nonsynchronous rotation and the existence of a liquid water layer. ?? 1998 Academic Press.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Icarus","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1006/icar.1998.5986","issn":"00191035","usgsCitation":"Greenberg, R., Geissler, P., Hoppa, G., Tufts, B., Durda, D., Pappalardo, R., Head, J., Greeley, R., Sullivan, R., and Carr, M.H., 1998, Tectonic Processes on Europa: Tidal Stresses, Mechanical Response, and Visible Features: Icarus, v. 135, no. 1, p. 64-78, https://doi.org/10.1006/icar.1998.5986.","startPage":"64","endPage":"78","numberOfPages":"15","costCenters":[],"links":[{"id":206950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1006/icar.1998.5986"},{"id":231336,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"135","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba44de4b08c986b320235","contributors":{"authors":[{"text":"Greenberg, R.","contributorId":26778,"corporation":false,"usgs":true,"family":"Greenberg","given":"R.","email":"","affiliations":[],"preferred":false,"id":386526,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Geissler, P.","contributorId":45662,"corporation":false,"usgs":true,"family":"Geissler","given":"P.","email":"","affiliations":[],"preferred":false,"id":386527,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoppa, G.","contributorId":80856,"corporation":false,"usgs":true,"family":"Hoppa","given":"G.","affiliations":[],"preferred":false,"id":386531,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tufts, B.R.","contributorId":93225,"corporation":false,"usgs":true,"family":"Tufts","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":386534,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Durda, D.D.","contributorId":67688,"corporation":false,"usgs":true,"family":"Durda","given":"D.D.","email":"","affiliations":[],"preferred":false,"id":386529,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pappalardo, R.","contributorId":84924,"corporation":false,"usgs":true,"family":"Pappalardo","given":"R.","affiliations":[],"preferred":false,"id":386533,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Head, J.W.","contributorId":67982,"corporation":false,"usgs":true,"family":"Head","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":386530,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Greeley, R.","contributorId":6538,"corporation":false,"usgs":true,"family":"Greeley","given":"R.","email":"","affiliations":[],"preferred":false,"id":386525,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Sullivan, R.","contributorId":63134,"corporation":false,"usgs":true,"family":"Sullivan","given":"R.","affiliations":[],"preferred":false,"id":386528,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Carr, M. H.","contributorId":84727,"corporation":false,"usgs":true,"family":"Carr","given":"M.","email":"","middleInitial":"H.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":false,"id":386532,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70020845,"text":"70020845 - 1998 - Application of the top specified boundary layer (TSBL) approximation to initial characterization of an inland aquifer mineralization 1. Direct contact between fresh and saltwater","interactions":[],"lastModifiedDate":"2012-03-12T17:19:52","indexId":"70020845","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Application of the top specified boundary layer (TSBL) approximation to initial characterization of an inland aquifer mineralization 1. Direct contact between fresh and saltwater","docAbstract":"This paper presents a basic study in generalized terms that originates from two needs: (1) to understand the major mechanisms involved in the mineralization of groundwater of the Great Bend Prairie aquifer of Kansas by saltwater originating from a deeper Permian bedrock formation, and (2) to develop simple, robust tools that can readily be used for local assessment and management activities in the salt-affected region. A simplified basic conceptual model is adopted, incorporating two horizontal layers of porous medium which come into contact at a specific location within the model domain. The top layer is saturated with freshwater, and the bottom layer is saturated with saltwater. The paper considers various stages of approximation which can be useful for simplified simulation of the build-up of the transition zone (TZ) between the freshwater and the saltwater. The hierarchy of approximate approaches leads to the development of the top specified boundary layer (TSBL) method, which is the major tool used in this study for initial characterization of the development of the TZ. It is shown that the thickness of the TZ is mainly determined by the characteristic dispersivity. The build-up of the TZ is completed after a time period equal to the time needed to advect a fluid particle along the whole extent of the TZ. Potential applications and the effects of natural recharge and pumpage on salinity transport in the domain are discussed and evaluated in the context of demonstrating the practicality of the TSBL approach.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0169-7722(98)00056-4","issn":"01697722","usgsCitation":"Rubin, H., and Buddemeier, R., 1998, Application of the top specified boundary layer (TSBL) approximation to initial characterization of an inland aquifer mineralization 1. Direct contact between fresh and saltwater: Journal of Contaminant Hydrology, v. 32, no. 3-4, p. 353-376, https://doi.org/10.1016/S0169-7722(98)00056-4.","startPage":"353","endPage":"376","numberOfPages":"24","costCenters":[],"links":[{"id":206485,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0169-7722(98)00056-4"},{"id":229959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ecbbe4b0c8380cd49455","contributors":{"authors":[{"text":"Rubin, H.","contributorId":54358,"corporation":false,"usgs":true,"family":"Rubin","given":"H.","email":"","affiliations":[],"preferred":false,"id":387737,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Buddemeier, R. W.","contributorId":86492,"corporation":false,"usgs":true,"family":"Buddemeier","given":"R. W.","affiliations":[],"preferred":false,"id":387738,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70020435,"text":"70020435 - 1998 - An evaluation of in-situ measurements of water temperature, specific conductance, and pH in low ionic strength streams","interactions":[],"lastModifiedDate":"2012-03-12T17:20:16","indexId":"70020435","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3728,"text":"Water, Air, & Soil Pollution","onlineIssn":"1573-2932","printIssn":"0049-6979","active":true,"publicationSubtype":{"id":10}},"title":"An evaluation of in-situ measurements of water temperature, specific conductance, and pH in low ionic strength streams","docAbstract":"Survey for continuous measurement of water temperature, specific conductance, and pH in four low ionic strength streams in the Catskill Mountains of New York was evaluated through a calculation of their bias, precision, and accuracy and by comparison with laboratory measurements of specific conductance and pH on samples collected concurrently. Results indicate that the mini-monitor measurements of specific conductance and pH in an acidic stream (acid-neutralizing capacity always less than 0) agreed with laboratory measurements well enough that the minimonitors can be used to supplement laboratory measurements (mean difference in pH was 0.02 pH unit and mean difference in specific conductance was 0.72 ??S cm-1. This mean difference was 0.32 ??S cm-1 if the minimonitor data were adjusted by the bias). In less acidic streams (two streams in which the acid-neutralizing capacity was always greater than 0 and one in which the acid-neutralizing capacity was greater than 0 except during high flows), there was poor agreement between laboratory and minimonitor measurements of specific conductance at high flows and pH at all flows. The water-temperature probes measured with sufficiently small bias (-0.1 ??C) and adequate precision (??0.70 ??C) for use with most applications.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water, Air, and Soil Pollution","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Kluwer Academic Publishers","publisherLocation":"Dordrecht, Netherlands","doi":"10.1023/A:1004948932734","issn":"00496979","usgsCitation":"Ranalli, A., 1998, An evaluation of in-situ measurements of water temperature, specific conductance, and pH in low ionic strength streams: Water, Air, & Soil Pollution, v. 104, no. 3-4, p. 423-441, https://doi.org/10.1023/A:1004948932734.","startPage":"423","endPage":"441","numberOfPages":"19","costCenters":[],"links":[{"id":206927,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1023/A:1004948932734"},{"id":231258,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea4ce4b0c8380cd48776","contributors":{"authors":[{"text":"Ranalli, A.J.","contributorId":25189,"corporation":false,"usgs":true,"family":"Ranalli","given":"A.J.","affiliations":[],"preferred":false,"id":386211,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70020413,"text":"70020413 - 1998 - Chemistry of unsaturated zone gases sampled in open boreholes at the crest of Yucca Mountain, Nevada: Data and basic concepts of chemical and physical processes in the mountain","interactions":[],"lastModifiedDate":"2018-03-16T10:24:08","indexId":"70020413","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Chemistry of unsaturated zone gases sampled in open boreholes at the crest of Yucca Mountain, Nevada: Data and basic concepts of chemical and physical processes in the mountain","docAbstract":"<p><span>Boreholes open to the unsaturated zone at the crest of Yucca Mountain, Nevada, were variously sampled for CO</span><sub>2</sub><span><span>&nbsp;</span>(including<span>&nbsp;</span></span><sup>13</sup><span>C and<span>&nbsp;</span></span><sup>14</sup><span>C), CH</span><sub>4</sub><span>, N</span><sub>2</sub><span>, O</span><sub>2</sub><span>, Ar, CFC-11, CFC-12, and CFC-113 from 1986 to 1993. Air enters the mountain in outcrops, principally on the eastern slope, is enriched in CO</span><sub>2</sub><span>by mixing with soil gas, and is advected to the mountain crest, where it returns to the atmosphere. The CFC data indicate that travel times of the advecting gas in the shallow Tiva Canyon hydrogeologic unit are ≤5 years. The<span>&nbsp;</span></span><sup>14</sup><span>C activities are postbomb to depths of 100 m, indicating little retardation of<span>&nbsp;</span></span><sup>14</sup><span>CO</span><sub>2</sub><span><span>&nbsp;</span>in the shallow flow systems. The<span>&nbsp;</span></span><sup>14</sup><span>C activities from 168 to 404 m in the Topopah Spring hydrogeologic unit are 85–90 pMC at borehole USW-UZ6. The CFC data show that the drilling of USW-UZ6 in 1984 has altered the natural system by providing a conduit through the Paintbrush Nonwelded unit, allowing flow from Topopah Spring outcrops in Solitario Canyon on the west to USW-UZ6, upward in the borehole through the Paintbrush, to the shallow Tiva Canyon flow systems, and out of the mountain.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/98WR00267","usgsCitation":"Thorstenson, D.C., Weeks, E.P., Haas, H., Busenberg, E., Plummer, N., and Peters, C.A., 1998, Chemistry of unsaturated zone gases sampled in open boreholes at the crest of Yucca Mountain, Nevada: Data and basic concepts of chemical and physical processes in the mountain: Water Resources Research, v. 34, no. 6, p. 1507-1529, https://doi.org/10.1029/98WR00267.","productDescription":"23 p.","startPage":"1507","endPage":"1529","costCenters":[],"links":[{"id":479829,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/98wr00267","text":"Publisher Index Page"},{"id":230943,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","volume":"34","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5aee4b0c8380cd4c371","contributors":{"authors":[{"text":"Thorstenson, Donald C.","contributorId":107323,"corporation":false,"usgs":true,"family":"Thorstenson","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":386146,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Weeks, Edwin P. epweeks@usgs.gov","contributorId":2576,"corporation":false,"usgs":true,"family":"Weeks","given":"Edwin","email":"epweeks@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":386145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haas, Herbert","contributorId":39794,"corporation":false,"usgs":false,"family":"Haas","given":"Herbert","email":"","affiliations":[],"preferred":false,"id":386143,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":386147,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":386148,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Peters, Charles A. capeters@usgs.gov","contributorId":214,"corporation":false,"usgs":true,"family":"Peters","given":"Charles","email":"capeters@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":386144,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":1000790,"text":"1000790 - 1998 - Reproduction and early life history of ruffe (<i>Gymnocephalus cernuus</i>) on the St. Louis River, a Lake Superior tributary","interactions":[],"lastModifiedDate":"2016-04-04T13:38:18","indexId":"1000790","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Reproduction and early life history of ruffe (<i>Gymnocephalus cernuus</i>) on the St. Louis River, a Lake Superior tributary","docAbstract":"<p><span>Reproduction and early life history of ruffe (</span><i>Gymnocephalus ceriums</i><span>) was investigated during April to July in 1993 and 1994 in the St. Louis River, a western Lake Superior tributary. This study was conducted to assist fishery managers in determining possible interactions among the early life stages of ruffe and other North American percids, and in obtaining information useful in developing control methods targeted at the early life stages of ruffe. Ruffe had a prolonged spawning period that extended from late April to late June with peak spawning in mid to late May when water temperatures were between 12 and 14&deg;C. The majority of ruffe protolarva were captured 1 to 2 weeks after egg deposition between mid May and late June and most were captured in water 0.5-m deep. Onshore-offshore movements were not observed, but diel vertical movements of larval ruffe were observed on several occasions. The greatest chance of ballast water transport of pelagic larval ruffe is between mid May and July. Information on reproduction and early life history in this report will assist fishery mangers in development of ruffe control methods, and assist Great Lakes shipping in ballast water management to prevent the spread of ruffe.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0380-1330(98)70814-7","usgsCitation":"Brown, W.P., Selgeby, J.H., and Collins, H.L., 1998, Reproduction and early life history of ruffe (<i>Gymnocephalus cernuus</i>) on the St. Louis River, a Lake Superior tributary: Journal of Great Lakes Research, v. 24, no. 2, p. 217-227, https://doi.org/10.1016/S0380-1330(98)70814-7.","productDescription":"11 p.","startPage":"217","endPage":"227","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":129029,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a55e4b07f02db62c6cf","contributors":{"authors":[{"text":"Brown, William P.","contributorId":16357,"corporation":false,"usgs":true,"family":"Brown","given":"William","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":309437,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Selgeby, James H.","contributorId":89828,"corporation":false,"usgs":true,"family":"Selgeby","given":"James","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":309439,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collins, Hollie L.","contributorId":65034,"corporation":false,"usgs":true,"family":"Collins","given":"Hollie","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":309438,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1000789,"text":"1000789 - 1998 - Intra-lake variation in maturity, fecundity, and spawning of slimy sculpins (Cottus cognatus) in southern Lake Ontario","interactions":[],"lastModifiedDate":"2024-05-08T00:14:09.461823","indexId":"1000789","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Intra-lake variation in maturity, fecundity, and spawning of slimy sculpins (Cottus cognatus) in southern Lake Ontario","docAbstract":"<div id=\"preview-section-abstract\"><div id=\"abstracts\" class=\"Abstracts u-font-serif text-s\"><div id=\"aep-abstract-id3\" class=\"abstract author\"><div id=\"aep-abstract-sec-id4\"><p>Knowledge of the spawning cycle and factors affecting fecundity of slimy sculpins (Cottus cognatus) are important in understanding the population dynamics of this species in large lake systems, like Lake Ontario. Fecundity and the spawning cycle of slimy sculpins were described from samples of slimy sculpins and their egg masses collected with bottom trawls during four annual surveys, April to October, 1988 to 1994. Incidence of gravid females and collections of their egg masses indicated that spawning by slimy sculpins likely occurred from late April to mid October in Lake Ontario. Protracted spawning by slimy sculpins in Lake Ontario is probably a function of the annual water temperature cycle at various depths. Mean length of gravid females was inversely related to density of slimy sculpins. Fecundity ranged from 55 to 1,157 eggs among fish 55 to 127 mm long, and for similar-sized fish, fecundity was inversely related to density of slimy sculpins. Fecundity was about 50% higher at Olcott, where population indices of slimy sculpins were low, compared with Nine Mile Point where indices were much higher. Somatic weight or total length were both good predictors of fecundity. Lipid content of slimy sculpins was lower in an area of high sculpin abundance than in an area of low sculpin abundance, suggesting that fecundity was a function of density-dependent food availability. In large aquatic ecosystems, samples from more than one area may be necessary to describe fecundity of a sedentary species like slimy sculpin, especially if fish densities vary considerably among geographic areas. Large geographic variations in fecundity may be an indicator of spatial imbalance of a species with its prey. Low fecundity may be a compensatory response of slimy sculpins to low food supplies, thereby limiting population growth.</p></div></div></div></div><div id=\"preview-section-introduction\"><br></div>","language":"English","publisher":"Elsevier","doi":"10.1016/S0380-1330(98)70829-9","usgsCitation":"Owens, R.W., and Noguchi, G.E., 1998, Intra-lake variation in maturity, fecundity, and spawning of slimy sculpins (Cottus cognatus) in southern Lake Ontario: Journal of Great Lakes Research, v. 24, no. 2, p. 383-391, https://doi.org/10.1016/S0380-1330(98)70829-9.","productDescription":"8 p.","startPage":"383","endPage":"391","numberOfPages":"8","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":133794,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48ace4b07f02db52d38f","contributors":{"authors":[{"text":"Owens, Randall W.","contributorId":23871,"corporation":false,"usgs":true,"family":"Owens","given":"Randall","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":309435,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Noguchi, George E.","contributorId":42552,"corporation":false,"usgs":true,"family":"Noguchi","given":"George","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":309436,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}