No abstract available.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Terra Antarctica","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"11228628","usgsCitation":"Bannister, S., Melhuish, A., Henrys, S., Stern, T., and ten Brink, U., 1999, Deep seismic reflections beneath the Trans-Antarctic Mountain Front, from reprocessed SERIS seismic data: Terra Antarctica, v. 6, no. 3-4, p. 363-364.","productDescription":"2 p.","startPage":"363","endPage":"364","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":229963,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe29e4b0c8380cd4eb64","contributors":{"authors":[{"text":"Bannister, S.","contributorId":40355,"corporation":false,"usgs":true,"family":"Bannister","given":"S.","email":"","affiliations":[],"preferred":false,"id":388024,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Melhuish, A.","contributorId":17788,"corporation":false,"usgs":true,"family":"Melhuish","given":"A.","email":"","affiliations":[],"preferred":false,"id":388021,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Henrys, S.","contributorId":27632,"corporation":false,"usgs":true,"family":"Henrys","given":"S.","email":"","affiliations":[],"preferred":false,"id":388022,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stern, T.","contributorId":49137,"corporation":false,"usgs":true,"family":"Stern","given":"T.","affiliations":[],"preferred":false,"id":388025,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"ten Brink, Uri S. 0000-0001-6858-3001 utenbrink@usgs.gov","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":127560,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri S.","email":"utenbrink@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":388023,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70020934,"text":"70020934 - 1999 - The Puelche volcanic field: Extensive Pleistocene rhyolite lava flows in the Andes of central Chile","interactions":[],"lastModifiedDate":"2025-07-22T14:57:05.371358","indexId":"70020934","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3287,"text":"Revista Geologica de Chile","active":true,"publicationSubtype":{"id":10}},"title":"The Puelche volcanic field: Extensive Pleistocene rhyolite lava flows in the Andes of central Chile","docAbstract":"A remote volcanic field in the rugged headwaters of the Río Puelche and Río Invernada (35.8°S) constitutes the largest cluster of Quaternary rhyolite lava flows yet identified in the Andean Southern Volcanic Zone. The Puelche Volcanic Field belongs to an intra-arc belt of silicic magmatic centers that extends, at least, 140 km north-south and lies well east of the volcanic front but nonetheless considerably west of the intraplate extensional fields of basaltic and alkaline centers of pampean Argentina. The authors' mapping has distinguished one shallow intrusive mass of early Pleistocene biotite rhyodacite (70.5% SiO2), 11 eruptive units of mid-Pleistocene high-K biotite-rhyolite lava (71.3-75.6% SiO2), and 4 eruptive units of basaltic andesite (53.95-4.9% SiO2), the conduits of which cut some of the rhyolites. Basal contacts of the rhyolite lava flows (and subjacent pyroclastic precursors) are generally scree covered, but glacial erosion has exposed internal flow structures and lithologic zonation superbly. Thicknesses of individual rhyolite lava flows range from 75 m to 400 m. Feeders for several units are well exposed. Cliff-draping unconformities and intracanyon relationships among the 11 rhyolite units show that the eruptive sequence spanned at least one glacial episode that accentuated the local relief. Lack of ice-contact features suggests, however, that all or most eruptions took place during non-glacial intervals probably between 400 ka and 100 ka. Post-eruptive glacial erosion reduced the rhyolites to several non-contiguous remnants that altogether cover 83 km2 and represent a surviving volume of about 21 km3. Consideration of slopes, lava thicknesses, and paleotopography suggest that the original area and volume were each about three times greater. Phenocryst content of the rhyolites ranges from 1 to 12%, with plagioclase>>biotite>FeTi oxides in all units and amphibole conspicuous in the least silicic. The chemically varied basaltic andesites range from phenocryst-poor to phenocryst-rich, exhibiting large differences in proportions of clinopyroxene, olivine, plagioclase, and xenocrystic quartz. Compositional bimodality of the volcanic field is striking, there being no Quaternary eruptive units having SiO2 contents between 55 and 70%. Major and trace element compositions of the mafic and silicic rocks are nonetheless typical of continental-margin arc suites, not of intracontinental suites. The lack of intermediate eruptive units and the differences between the mafic and rhyolitic lavas in Sr-isotope composition suggest that the rhyolites fractionated from a hybrid parent rather than continuously from basaltic magma. The rhyolites may contain larger contributions of upper-crustal partial melts than do silicic products of the volcanic-front centers 30 km to the west.
","language":"English","publisher":"Servicio Nacional de Geología y Minería","doi":"10.4067/S0716-02081999000200008 ","issn":"07160208","usgsCitation":"Hildreth, W., Fierstein, J., Godoy, E., Drake, R.E., and Singer, B., 1999, The Puelche volcanic field: Extensive Pleistocene rhyolite lava flows in the Andes of central Chile: Revista Geologica de Chile, v. 26, no. 2, p. 275-309, https://doi.org/10.4067/S0716-02081999000200008 .","productDescription":"35 p.","startPage":"275","endPage":"309","numberOfPages":"35","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":494136,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4067/s0716-02081999000200008","text":"Publisher Index Page"},{"id":229962,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba89ee4b08c986b321d44","contributors":{"authors":[{"text":"Hildreth, Wes 0000-0002-7925-4251 hildreth@usgs.gov","orcid":"https://orcid.org/0000-0002-7925-4251","contributorId":2221,"corporation":false,"usgs":true,"family":"Hildreth","given":"Wes","email":"hildreth@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":388019,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fierstein, J.","contributorId":67666,"corporation":false,"usgs":true,"family":"Fierstein","given":"J.","email":"","affiliations":[],"preferred":false,"id":388018,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Godoy, E.","contributorId":104656,"corporation":false,"usgs":true,"family":"Godoy","given":"E.","email":"","affiliations":[],"preferred":false,"id":388020,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Drake, Robert E.","contributorId":14465,"corporation":false,"usgs":true,"family":"Drake","given":"Robert","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":388016,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Singer, B.","contributorId":46710,"corporation":false,"usgs":true,"family":"Singer","given":"B.","affiliations":[],"preferred":false,"id":388017,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70162425,"text":"70162425 - 1999 - Book review: Monitoring vertebrate populations","interactions":[],"lastModifiedDate":"2023-12-04T14:19:54.325865","indexId":"70162425","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1337,"text":"Copeia","active":true,"publicationSubtype":{"id":10}},"title":"Book review: Monitoring vertebrate populations","docAbstract":"No abstract available.
","language":"English","publisher":"American Society of Ichthyologists and Herpetologists","doi":"10.2307/1447510","usgsCitation":"Dodd, C.K., 1999, Book review: Monitoring vertebrate populations: Copeia, v. 1999, p. 540-541, https://doi.org/10.2307/1447510.","productDescription":"2 p.","startPage":"540","endPage":"541","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314732,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1999","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a75545e4b0b28f1184d7d2","contributors":{"authors":[{"text":"Dodd, C. Kenneth Jr.","contributorId":89215,"corporation":false,"usgs":true,"family":"Dodd","given":"C.","suffix":"Jr.","email":"","middleInitial":"Kenneth","affiliations":[],"preferred":false,"id":589528,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70162430,"text":"70162430 - 1999 - Monitoring change in protected areas: Problems of scope, scale, and power","interactions":[],"lastModifiedDate":"2016-01-25T10:24:14","indexId":"70162430","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Monitoring change in protected areas: Problems of scope, scale, and power","docAbstract":"No abstract available.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"On the frontiers of conservation: Proceedings of the 10th Conference on Research and Resource Management in Parks and on Public Lands","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"language":"English","publisher":"George Wright Society","usgsCitation":"Hall, R.J., 1999, Monitoring change in protected areas: Problems of scope, scale, and power, in On the frontiers of conservation: Proceedings of the 10th Conference on Research and Resource Management in Parks and on Public Lands, p. 271-277.","productDescription":"7 p.","startPage":"271","endPage":"277","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314740,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a75563e4b0b28f1184d863","contributors":{"authors":[{"text":"Hall, Russell James","contributorId":44602,"corporation":false,"usgs":true,"family":"Hall","given":"Russell","email":"","middleInitial":"James","affiliations":[],"preferred":false,"id":589541,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70162458,"text":"70162458 - 1999 - Book review: Sustainable Aquaculture","interactions":[],"lastModifiedDate":"2016-01-25T12:53:38","indexId":"70162458","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3214,"text":"The Quarterly Review of Biology","active":true,"publicationSubtype":{"id":10}},"title":"Book review: Sustainable Aquaculture","docAbstract":"No abstract available.
\n
Review info: Title of book being reviewed. Edited by John E. Bardach, 1997. ISBN: 0-471-14829-6, 251 pp.
No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The living marine resources of the Western Central Pacific","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Food and Agricultural Organization of the United Nations","usgsCitation":"Smith-Vaniz, W., 1999, Family Carangidae, chap. of The living marine resources of the Western Central Pacific, v. 4, p. 2659-2756.","productDescription":"98 p.","startPage":"2659","endPage":"2756","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314682,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314681,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.fao.org/docrep/009/x2400e/x2400e00.htm"}],"volume":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a360bce4b0b28f1183bbf8","contributors":{"editors":[{"text":"Carpenter, Kent E.","contributorId":8735,"corporation":false,"usgs":true,"family":"Carpenter","given":"Kent","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":589394,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Niem, Volker H.","contributorId":152445,"corporation":false,"usgs":false,"family":"Niem","given":"Volker","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":589395,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Smith-Vaniz, William F.","contributorId":45635,"corporation":false,"usgs":true,"family":"Smith-Vaniz","given":"William F.","affiliations":[],"preferred":false,"id":589393,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70020915,"text":"70020915 - 1999 - The role of groundwater chemistry in the transport of bacteria to water-supply wells","interactions":[],"lastModifiedDate":"2012-03-12T17:19:37","indexId":"70020915","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The role of groundwater chemistry in the transport of bacteria to water-supply wells","docAbstract":"Static mini-columns and in situ injection and recovery tests were used to assess the effects of modest changes in groundwater chemistry upon the pH-dependence of bacterial attachment, a primary determinant of bacterial mobility in drinking water aquifers. In uncontaminated groundwater (<1 mg l-1 dissolved organic carbon, DOC), bacterial attachment to aquifer grain surfaces declined steadily from 93 to 20% in response to an increase in pH from 5.8 to 7.8. However, bacterial attachment in modestly-contaminated groundwater (4 mg l-1 DOC) was relatively insensitive to pH change from pH 3.5 to pH 8, as was bacterial attachment in uncontaminated groundwater amended with only ~3 mg l-1 of purified humic acid. Destruction by UV-oxidation of the DOC in contaminated groundwater partially restored the pH-dependence of bacterial attachment. Results from static column tests and from a small-scale (3.6 m) natural-gradient injection and recovery study suggest that low concentrations of surfactants can also substantively alter the attraction of groundwater bacteria for grain surfaces and, therefore can alter the transport of bacteria to water-supply wells. This phenomenon was pH-sensitive and dependent upon the nature of the surfactant. At pH 7.6, 200 mg l-1 of the non-ionic surfactant, Imbentin, caused a doubling of fractional bacterial attachment in aquifer-sediment columns, but had little effect under slightly acidic conditions (e.g. at pH 5.8). In contrast, 1 mg l-1 of linear alkylbenzene sulphonate (LAS) surfactant, a common sewage-derived contaminant, decreased the fractional bacterial attachment by more than 30% at pH 5.8, but had little effect at pH 7.3.Static mini-columns and in situ injection and recovery tests were used to assess the effects of modest changes in groundwater chemistry upon the pH-dependence of bacterial attachment, a primary determinant of bacterial mobility in drinking water aquifers. In uncontaminated groundwater (<1 mg l-1 dissolved organic carbon, DOC), bacterial attachment to aquifer grain surfaces declined steadily from 93 to 20% in response to an increase in pH from 5.8 to 7.8. However, bacterial attachment in modestly-contaminated groundwater (4 mg l-1 DOC) was relatively insensitive to pH change from pH 3.5 to pH 8, as was bacterial attachment in uncontaminated groundwater amended with only approx. 3 mg l-1 of purified humic acid. Destruction of UV-oxidation of the DOC in contaminated groundwater partially restored the pH-dependence of bacterial attachment. Results from the static column tests and from a small-scale (3.6 m) natural-gradient injection and recovery study suggest that low concentrations of surfactants can also substantively alter the attraction of groundwater bacteria for grain surfaces and, therefore can alter the transport of bacteria to water-supply wells. This phenomenon was pH-sensitive and dependent upon the nature of the surfactant. At pH 7.6, 200 mg l-1 of the non-ionic surfactant, Imbentin, caused a doubling of fractional bacterial attachment in aquifer-sediment columns, but had little effect under slightly acidic conditions (e.g. at pH 5.8). In contrast, 1 mg l-1 of linear alkylbenzene sulphonate (LAS) surfactant, a common sewage-derived contaminant, decreased the fractional bacterial attachment by more than 30% at pH 5.8, but had little effect at pH 7.3.","largerWorkTitle":"IAHS-AISH Publication","conferenceTitle":"The 2nd International Symposium on Assessing and Managing Health Risks from Drinking Water Contamination: Approaches and Applications","conferenceDate":"7 September 1998 through 10 September 1998","conferenceLocation":"Santiago, Chile","language":"English","publisher":"IAHS","publisherLocation":"Houston, TX, United States","issn":"01447815","usgsCitation":"Harvey, R., and Metge, D., 1999, The role of groundwater chemistry in the transport of bacteria to water-supply wells, in IAHS-AISH Publication, no. 260, Santiago, Chile, 7 September 1998 through 10 September 1998, p. 49-50.","startPage":"49","endPage":"50","numberOfPages":"2","costCenters":[],"links":[{"id":229722,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"260","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf73e4b08c986b3247e0","contributors":{"authors":[{"text":"Harvey, R.W. 0000-0002-2791-8503","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":11757,"corporation":false,"usgs":true,"family":"Harvey","given":"R.W.","affiliations":[],"preferred":false,"id":387965,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Metge, D.W.","contributorId":51477,"corporation":false,"usgs":true,"family":"Metge","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":387966,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020974,"text":"70020974 - 1999 - Butterfly (Papilionoidea and Hesperioidea) assemblages associated with natural, exotic, and restored riparian habitats along the lower Colorado River, USA","interactions":[],"lastModifiedDate":"2018-02-23T14:38:51","indexId":"70020974","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3246,"text":"Regulated Rivers: Research & Management","printIssn":"0886-9375","active":false,"publicationSubtype":{"id":10}},"title":"Butterfly (Papilionoidea and Hesperioidea) assemblages associated with natural, exotic, and restored riparian habitats along the lower Colorado River, USA","docAbstract":"Butterfly assemblages were used to compare revegetated and natural riparian areas along the lower Colorado River. Species richness and correspondence analyses of assemblages showed that revegetated sites had fewer biological elements than more natural sites along the Bill Williams River. Data suggest that revegetated sites do not provide resources needed by some members of the butterfly assemblage, especially those species historically associated with the cottonwood/willow ecosystem. Revegetated sites generally lacked nectar resources, larval host plants, and closed canopies. The riparian system along the regulated river segment that contains these small revegetated sites also appears to have diminished habitat heterogeneity and uncoupled riparian corridors.
Revegetated sites were static environments without the successional stages caused by flooding disturbance found in more natural systems. We hypothesize that revegetation coupled with a more natural hydrology is important for restoration of butterfly assemblages along the lower Colorado River.
","language":"English","publisher":"Wiley","doi":"10.1002/(SICI)1099-1646(199911/12)15:6<485::AID-RRR550>3.0.CO;2-Z","usgsCitation":"Nelson, S.M., and Andersen, D., 1999, Butterfly (Papilionoidea and Hesperioidea) assemblages associated with natural, exotic, and restored riparian habitats along the lower Colorado River, USA: Regulated Rivers: Research & Management, v. 15, no. 6, p. 485-504, https://doi.org/10.1002/(SICI)1099-1646(199911/12)15:6<485::AID-RRR550>3.0.CO;2-Z.","productDescription":"20 p.","startPage":"485","endPage":"504","costCenters":[],"links":[{"id":229925,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Bill Williams River, Colorado River","volume":"15","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2bce4b0c8380cd4b322","contributors":{"authors":[{"text":"Nelson, S. M.","contributorId":81853,"corporation":false,"usgs":false,"family":"Nelson","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":388164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Andersen, D.C.","contributorId":19119,"corporation":false,"usgs":true,"family":"Andersen","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":388163,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70021030,"text":"70021030 - 1999 - Kinematic analysis of melange fabrics: Examples and applications from the McHugh Complex, Kenai Peninsula, Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:19:47","indexId":"70021030","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2468,"text":"Journal of Structural Geology","active":true,"publicationSubtype":{"id":10}},"title":"Kinematic analysis of melange fabrics: Examples and applications from the McHugh Complex, Kenai Peninsula, Alaska","docAbstract":"Permian to Cretaceous melange of the McHugh Complex on the Kenai Peninsula, south-central Alaska includes blocks and belts of graywacke, argillite, limestone, chert, basalt, gabbro, and ultramafic rocks, intruded by a variety of igneous rocks. An oceanic plate stratigraphy is repeated hundreds of times across the map area, but most structures at the outcrop scale extend lithological layering. Strong rheological units occur as blocks within a matrix that flowed around the competent blocks during deformation, forming broken formation and melange. Deformation was noncoaxial, and disruption of primary layering was a consequence of general strain driven by plate convergence in a relatively narrow zone between the overriding accretionary wedge and the downgoing, generally thinly sedimented oceanic plate. Soft-sediment deformation processes do not appear to have played a major role in the formation of the melange. A model for deformation at the toe of the wedge is proposed in which layers oriented at low angles to ??1 are contracted in both the brittle and ductile regimes, layers at 30-45??to ??1 are extended in the brittle regime and contracted in the ductile regime, and layers at angles greater than 45??to ??1 are extended in both the brittle and ductile regimes. Imbrication in thrust duplexes occurs at deeper levels within the wedge. Many structures within melange of the McHugh Complex are asymmetric and record kinematic information consistent with the inferred structural setting in an accretionary wedge. A displacement field for the McHugh Complex on the lower Kenai Peninsula includes three belts: an inboard belt of Late Triassic rocks records west-to-east-directed slip of hanging walls, a central belt of predominantly Early Jurassic rocks records north-south directed displacements, and Early Cretaceous rocks in an outboard belt preserve southwest-northeast directed slip vectors. Although precise ages of accretion are unknown, slip directions are compatible with inferred plate motions during the general time frame of accretion of the McHugh Complex. The slip vectors are interpreted to preserve the convergence directions between the overriding and underriding plates, which became more oblique with time. They are not considered indicative of strain partitioning into belts of orogen-parallel and orogen-perpendicular displacements, because the kinematic data are derived from the earliest preserved structures, whereas fabrics related to strain partitioning would be expected to be superimposed on earlier accretion-related fabrics.Permian to Cretaceous melange of the McHugh Complex on the Kenai Peninsula, south-central Alaska includes blocks and belts of graywacke, argillite, limestone, chert, basalt, gabbro, and ultramafic rocks, intruded by a variety of igneous rocks. An oceanic plate stratigraphy is repeated hundreds of times across the map area, but most structures at the outcrop scale extend lithological layering. Strong rheological units occur as blocks within a matrix that flowed around the competent blocks during deformation, forming broken formation and melange. Deformation was noncoaxial, and disruption of primary layering was a consequence of general strain driven by plate convergence in a relatively narrow zone between the overriding accretionary wedge and the downgoing, generally thinly sedimented oceanic plate. Soft-sediment deformation processes do not appear to have played a major role in the formation of the melange. A model for deformation at the toe of the wedge is proposed in which layers oriented at low angles to ??1 are contracted in both the brittle and ductile regimes, layers at 30-45?? to ??1 are extended in the brittle regime and contracted in the ductile regime, and layers at angles greater than 45?? to ??1 are extended in both the brittle and ductile regimes. Imbrication in thrust duplexes occurs at deeper levels within the wedge. Many structures within melange of the McHugh Complex are asymmetric and record ","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Structural Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Science Ltd","publisherLocation":"Exeter, United Kingdom","doi":"10.1016/S0191-8141(99)00105-4","issn":"01918141","usgsCitation":"Kusky, T., and Bradley, D.C., 1999, Kinematic analysis of melange fabrics: Examples and applications from the McHugh Complex, Kenai Peninsula, Alaska: Journal of Structural Geology, v. 21, no. 12, p. 1773-1796, https://doi.org/10.1016/S0191-8141(99)00105-4.","startPage":"1773","endPage":"1796","numberOfPages":"24","costCenters":[],"links":[{"id":479565,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/s0191-8141(99)00105-4","text":"Publisher Index Page"},{"id":206530,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0191-8141(99)00105-4"},{"id":230131,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a409ce4b0c8380cd64ec7","contributors":{"authors":[{"text":"Kusky, T.M.","contributorId":38719,"corporation":false,"usgs":true,"family":"Kusky","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":388357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, D. C.","contributorId":17634,"corporation":false,"usgs":true,"family":"Bradley","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":388356,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70021031,"text":"70021031 - 1999 - Evolution of composition of major mineral phases in layered complex of ophiolite assemblage: Evidence for the Voykar ophiolites (Polar urals, Russia)","interactions":[],"lastModifiedDate":"2012-03-12T17:19:47","indexId":"70021031","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Evolution of composition of major mineral phases in layered complex of ophiolite assemblage: Evidence for the Voykar ophiolites (Polar urals, Russia)","docAbstract":"We present a detailed study of compositional variation of major minerals through a cross section of the layered complex of the Late Devonian Voykar ophiolite assemblage (Polar Urals). The principal characteristics of this layered complex suggest crystallization from a periodically replenished open magma system in a tectonically dynamic, oceanic environment. The complex may be described in terms of two sequences of cumulus rocks, or megarhythms, that each display an upward progression from ultramafic to gabbroic composition. A transitional zone between the megarhythms is characterized by an upwardly reverse lithologic progression from gabbroic to ultramafic composition. Broad cryptic variation in mineral composition over intervals >100 m parallel changes in the lithologic abundances and suggest changes in the rate of magma supply relative to crystallization and(or) tapping of different mantle sources that had been previously depleted to different degrees. The mineralogy, mineral compositions and isotopic composition of the layered complex coupled with the association of the Voykar ophiolite with island-arc complexes suggest that it most likely formed in a back-arc basin.","largerWorkTitle":"Ofioliti","language":"English","issn":"03912612","usgsCitation":"Sharkov, E., Chistyakov, A., Laz’ko, E.E., and Quick, J.E., 1999, Evolution of composition of major mineral phases in layered complex of ophiolite assemblage: Evidence for the Voykar ophiolites (Polar urals, Russia), in Ofioliti, v. 24, no. 2, p. 247-257.","startPage":"247","endPage":"257","numberOfPages":"11","costCenters":[],"links":[{"id":230166,"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":"505a0d7de4b0c8380cd53053","contributors":{"authors":[{"text":"Sharkov, E.V.","contributorId":68069,"corporation":false,"usgs":true,"family":"Sharkov","given":"E.V.","email":"","affiliations":[],"preferred":false,"id":388361,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chistyakov, A.V.","contributorId":62888,"corporation":false,"usgs":true,"family":"Chistyakov","given":"A.V.","email":"","affiliations":[],"preferred":false,"id":388360,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Laz’ko, E. E.","contributorId":16710,"corporation":false,"usgs":true,"family":"Laz’ko","given":"E.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":388358,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Quick, J. E.","contributorId":48563,"corporation":false,"usgs":true,"family":"Quick","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":388359,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70020999,"text":"70020999 - 1999 - Dry Valley streams in Antarctica: Ecosystems waiting for water","interactions":[],"lastModifiedDate":"2023-11-05T13:46:18.159898","indexId":"70020999","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":997,"text":"BioScience","active":true,"publicationSubtype":{"id":10}},"title":"Dry Valley streams in Antarctica: Ecosystems waiting for water","docAbstract":"An axiom of ecology is: 'Where there is water, there is life.' In dry valley ecosystems of Antarctica, this axiom can be extended to: 'Where there has been and will be water, there is life.' Stream communities in the dry valleys can withstand desiccation on an annual basis and also for longer periods - as much as decades or even centuries. These intact ecosystems, consisting primarily of cyanobacteria and eukaryotic algae, spring back to life with the return of water. Soil organisms in the dry valleys also have remarkable survival capabilities (Virginia and Wall 1999), emerging from dormancy with the arrival of water. Streams in the dry valleys carry meltwater from a glacier or ice-field source to the lakes on the valley floors and generally flow for 4-10 weeks during the summer, depending on climatic conditions. Many of these streams contain abundant algal mats that are perennial in the sense that they are in a freeze-dried state during the winter and begin growing again within minutes of becoming wetted by the first flow of the season. The algal species present in the streams are mainly filamentous cyanobacteria (approximately 20 species of the genera Phormidium, Oscillatoria, and Nostoc), two green algal species of the genus Prasiola, and numerous diatom taxa that are characteristic of soil habitats and polar regions. Algal abundances are greatest in those streams in which periglacial processes, acting over periods of perhaps a century, have produced a stable stone pavement in the streambed. This habitat results in a less turbulent flow regime and limits sediment scour from the streambed. Because dry valley glaciers advance and retreat over periods of centuries and millennia and stream networks in the dry valleys evolve through sediment deposition and transport, some of the currently inactive stream channels may receive flow again in the future. Insights- into the process of algal persistence and reactivation will come from long-term experiments that study the effects of reintroducing water flow to channels in which flow has not occurred for decades or centuries. The present work of the McMurdo Dry Valleys LTER has led us to conclude that the legacy of past conditions constitutes a dominant influence on present-day ecosystem structure and function in the dry valleys (Moorhead et al. 1999). For example, Virginia-and Wall (1999) have found that soil nematodes are partly sustained by relict organic carbon from algae that grew during the high lake stands of 8000-10,000 years ago. Similarly, the growth of current algal populations in the lakes of the dry valleys is supported by diffusion of nutrients from relict nutrient pools in the deep bottom waters (Priscu et al. 1999). For the stream ecosystems, abundant algal mats are present in channels that have stable stone pavements, which formed through freeze-thaw cycles occurring over long periods, possibly hundreds of years. We hypothesize that these stone pavements are an important ecological legacy permitting the successful 'waiting for water' strategy. Similarly, the biodiversity of algal species that can survive the harsh conditions in the streams of the dry valleys may be stable for centuries or more, representing a second important ecological legacy.","language":"English","publisher":"Oxford Academic","doi":"10.1525/bisi.1999.49.12.985","issn":"00063568","usgsCitation":"McKnight, D.M., Niyogi, D., Alger, A., Bomblies, A., Conovitz, P., and Tate, C.M., 1999, Dry Valley streams in Antarctica: Ecosystems waiting for water: BioScience, v. 49, no. 12, p. 985-995, https://doi.org/10.1525/bisi.1999.49.12.985.","productDescription":"11 p.","startPage":"985","endPage":"995","numberOfPages":"11","costCenters":[],"links":[{"id":422395,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://academic.oup.com/bioscience/article/49/12/985/247391"},{"id":229690,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0401e4b0c8380cd50734","contributors":{"authors":[{"text":"McKnight, Diane M.","contributorId":59773,"corporation":false,"usgs":false,"family":"McKnight","given":"Diane","email":"","middleInitial":"M.","affiliations":[{"id":16833,"text":"INSTAAR, University of Colorado","active":true,"usgs":false}],"preferred":false,"id":388248,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Niyogi, D.K.","contributorId":103816,"corporation":false,"usgs":true,"family":"Niyogi","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":388250,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alger, A.S.","contributorId":48339,"corporation":false,"usgs":true,"family":"Alger","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":388247,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bomblies, A.","contributorId":17786,"corporation":false,"usgs":true,"family":"Bomblies","given":"A.","email":"","affiliations":[],"preferred":false,"id":388245,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Conovitz, P.A.","contributorId":28764,"corporation":false,"usgs":true,"family":"Conovitz","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":388246,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tate, C. M.","contributorId":97147,"corporation":false,"usgs":true,"family":"Tate","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":388249,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70162403,"text":"70162403 - 1999 - Conservation of aquatic karst Biotas: shedding light on troubled waters","interactions":[],"lastModifiedDate":"2016-01-22T12:14:09","indexId":"70162403","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Conservation of aquatic karst Biotas: shedding light on troubled waters","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Freshwater ecoregions of North America","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Island Press","usgsCitation":"Walsh, S.J., 1999, Conservation of aquatic karst Biotas: shedding light on troubled waters, chap. of Freshwater ecoregions of North America, p. 106-108.","productDescription":"3 p.","startPage":"106","endPage":"108","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314692,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314691,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.islandpress.org/book/freshwater-ecoregions-of-north-america"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a360bbe4b0b28f1183bbe7","contributors":{"editors":[{"text":"Abell, Robin","contributorId":152400,"corporation":false,"usgs":false,"family":"Abell","given":"Robin","affiliations":[],"preferred":false,"id":589418,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Olson, David N.","contributorId":66305,"corporation":false,"usgs":true,"family":"Olson","given":"David","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":589419,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Dinerstein, Eric","contributorId":59920,"corporation":false,"usgs":true,"family":"Dinerstein","given":"Eric","email":"","affiliations":[],"preferred":false,"id":589420,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Hurley, Patrick M.","contributorId":12121,"corporation":false,"usgs":true,"family":"Hurley","given":"Patrick","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":589421,"contributorType":{"id":2,"text":"Editors"},"rank":4},{"text":"Diggs, James T.","contributorId":152401,"corporation":false,"usgs":false,"family":"Diggs","given":"James","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":589422,"contributorType":{"id":2,"text":"Editors"},"rank":5},{"text":"Eichbaum, William","contributorId":152402,"corporation":false,"usgs":false,"family":"Eichbaum","given":"William","email":"","affiliations":[],"preferred":false,"id":589423,"contributorType":{"id":2,"text":"Editors"},"rank":6},{"text":"Walters, Steven","contributorId":152403,"corporation":false,"usgs":false,"family":"Walters","given":"Steven","email":"","affiliations":[],"preferred":false,"id":589424,"contributorType":{"id":2,"text":"Editors"},"rank":7},{"text":"Wettengel, Wesley","contributorId":152404,"corporation":false,"usgs":false,"family":"Wettengel","given":"Wesley","email":"","affiliations":[],"preferred":false,"id":589425,"contributorType":{"id":2,"text":"Editors"},"rank":8},{"text":"Allnutt, Tom","contributorId":152405,"corporation":false,"usgs":false,"family":"Allnutt","given":"Tom","email":"","affiliations":[],"preferred":false,"id":589426,"contributorType":{"id":2,"text":"Editors"},"rank":9},{"text":"Loucks, Colby J.","contributorId":152406,"corporation":false,"usgs":false,"family":"Loucks","given":"Colby","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":589427,"contributorType":{"id":2,"text":"Editors"},"rank":10},{"text":"Hedao, Prashant","contributorId":152407,"corporation":false,"usgs":false,"family":"Hedao","given":"Prashant","email":"","affiliations":[],"preferred":false,"id":589428,"contributorType":{"id":2,"text":"Editors"},"rank":11},{"text":"Taylor, Caroline","contributorId":152408,"corporation":false,"usgs":false,"family":"Taylor","given":"Caroline","email":"","affiliations":[],"preferred":false,"id":589429,"contributorType":{"id":2,"text":"Editors"},"rank":12}],"authors":[{"text":"Walsh, Stephen J. 0000-0002-1009-8537 swalsh@usgs.gov","orcid":"https://orcid.org/0000-0002-1009-8537","contributorId":1456,"corporation":false,"usgs":true,"family":"Walsh","given":"Stephen","email":"swalsh@usgs.gov","middleInitial":"J.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":589417,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70020996,"text":"70020996 - 1999 - Protocol and practice in the adaptive management of waterfowl harvests","interactions":[],"lastModifiedDate":"2012-03-12T17:19:38","indexId":"70020996","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1323,"text":"Conservation Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Protocol and practice in the adaptive management of waterfowl harvests","docAbstract":"Waterfowl harvest management in North America, for all its success, historically has had several shortcomings, including a lack of well-defined objectives, a failure to account for uncertain management outcomes, and inefficient use of harvest regulations to understand the effects of management. To address these and other concerns, the U.S. Fish and Wildlife Service began implementation of adaptive harvest management in 1995. Harvest policies are now developed using a Markov decision process in which there is an explicit accounting for uncontrolled environmental variation, partial controllability of harvest, and structural uncertainty in waterfowl population dynamics. Current policies are passively adaptive, in the sense that any reduction in structural uncertainty is an unplanned by-product of the regulatory process. A generalization of the Markov decision process permits the calculation of optimal actively adaptive policies, but it is not yet clear how state-specific harvest actions differ between passive and active approaches. The Markov decision process also provides managers the ability to explore optimal levels of aggregation or \"management scale\" for regulating harvests in a system that exhibits high temporal, spatial, and organizational variability. Progress in institutionalizing adaptive harvest management has been remarkable, but some managers still perceive the process as a panacea, while failing to appreciate the challenges presented by this more explicit and methodical approach to harvest regulation. Technical hurdles include the need to develop better linkages between population processes and the dynamics of landscapes, and to model the dynamics of structural uncertainty in a more comprehensive fashion. From an institutional perspective, agreement on how to value and allocate harvests continues to be elusive, and there is some evidence that waterfowl managers have overestimated the importance of achievement-oriented factors in setting hunting regulations. Indeed, it is these unresolved value judgements, and the lack of an effective structure for organizing debate, that present the greatest threat to adaptive harvest management as a viable means for coping with management uncertainty. Copyright ?? 1999 by The Resilience Alliance.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Conservation Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"11955449","usgsCitation":"Johnson, F., and Williams, K., 1999, Protocol and practice in the adaptive management of waterfowl harvests: Conservation Ecology, v. 3, no. 1.","costCenters":[],"links":[{"id":229651,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8f7fe4b0c8380cd7f7d3","contributors":{"authors":[{"text":"Johnson, F.","contributorId":59576,"corporation":false,"usgs":true,"family":"Johnson","given":"F.","affiliations":[],"preferred":false,"id":388232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, K.","contributorId":40365,"corporation":false,"usgs":true,"family":"Williams","given":"K.","affiliations":[],"preferred":false,"id":388231,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1000670,"text":"1000670 - 1999 - Stock structure of Lake Baikal omul as determined by whole-body morphology","interactions":[],"lastModifiedDate":"2016-04-04T11:33:37","indexId":"1000670","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2285,"text":"Journal of Fish Biology","active":true,"publicationSubtype":{"id":10}},"title":"Stock structure of Lake Baikal omul as determined by whole-body morphology","docAbstract":"In Lake Baikal, three morphotypes of omul Coregonus autumnalis migratorius are recognized; the littoral, pelagic, and deep-water forms. Morphotype assignment is difficult, and similar to that encountered in pelagic and deep-water coregonines in the Laurentian Great Lakes. Principal component analysis revealed separation of all three morphotypes based on caudal peduncle length and depth, length and depth of the body between the dorsal and anal fin, and distance between the pectoral and the pelvic fins. Strong negative loadings were associated with head measurements. Omul of the same morphotype captured at different locations were classified to location of capture using step-wise discriminant function analysis. Jackknife correct classifications ranged from 43 to 78% for littoral omul from five locations, and 45–86% for pelagic omul from four locations. Patterns of location misclassification of littoral omul suggested that the sub-population structure, hence stock affinity, may be influenced by movements and intermixing of individuals among areas that are joined bathymetrically. Pelagic omul were more distinguishable by site and may support a previous hypothesis of a spawning-based rather than a foraging-based sub-population structure. Omul morphotypes may reflect adaptations to both ecological and local environmental conditions, and may have a genetic basis.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.1999.tb02033.x","usgsCitation":"Bronte, C.R., Fleischer, G., Maistrenko, S., and Pronin, N., 1999, Stock structure of Lake Baikal omul as determined by whole-body morphology: Journal of Fish Biology, v. 54, no. 4, p. 787-798, https://doi.org/10.1111/j.1095-8649.1999.tb02033.x.","productDescription":"12 p.","startPage":"787","endPage":"798","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":133428,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"54","issue":"4","noUsgsAuthors":false,"publicationDate":"2005-04-19","publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b437d","contributors":{"authors":[{"text":"Bronte, Charles R.","contributorId":83050,"corporation":false,"usgs":true,"family":"Bronte","given":"Charles","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":309063,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fleischer, G.W.","contributorId":33281,"corporation":false,"usgs":true,"family":"Fleischer","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":309061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maistrenko, S.G.","contributorId":12428,"corporation":false,"usgs":true,"family":"Maistrenko","given":"S.G.","email":"","affiliations":[],"preferred":false,"id":309060,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pronin, N.M.","contributorId":44106,"corporation":false,"usgs":true,"family":"Pronin","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":309062,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70021046,"text":"70021046 - 1999 - Population changes in bats from central Arizona: 1972 and 1997","interactions":[],"lastModifiedDate":"2012-03-12T17:19:38","indexId":"70021046","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3451,"text":"Southwestern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Population changes in bats from central Arizona: 1972 and 1997","docAbstract":"Prompted by concern about declining bat populations in the southwestern United States, we surveyed for changes in populations between 1972 and 1997 at a study area in central Arizona. We duplicated earlier searches of ancient Indian dwellings and crevices in surrounding cliffs for diurnally roosting bats during the time of year when maternity colonies should have been present, and repeated mist-netting to capture bats in flight along the cliffs at night. Antrozous pallidus was gone. A maternity colony of Myotis velifer no longer existed. Tadarida brasiliensis was rare in 1997 compared to 1972; aggregations of Myotis yumanensis seen in 1972 were missing in 1997. Breeding Corynorhinus townsendii were found in 1997, but were unknown at this location in 1972. Small numbers of Eptesicus fuscus, Myotis californicus, and Pipistrellus hesperus occupied the site in both 1972 and 1997. Additionally, museum records show that most of the bats we documented at this site also were present in 1931. Surrounding habitat did not appear substantially different between 1972 and 1997, and a reconstruction of possible impacts from bat biologists did not suggest that researchers caused the local extinctions we document. The most obvious change over 25 years was a dramatic increase in recreational use of the area. We believe that disturbances associated with recreationists resulted in the observed population changes, primarily through roost abandonment.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Southwestern Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00384909","usgsCitation":"O'Shea, T., and Vaughan, T., 1999, Population changes in bats from central Arizona: 1972 and 1997: Southwestern Naturalist, v. 44, no. 4, p. 495-500.","startPage":"495","endPage":"500","numberOfPages":"6","costCenters":[],"links":[{"id":229732,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d2ee4b0c8380cd79dc9","contributors":{"authors":[{"text":"O'Shea, T. J. 0000-0002-0758-9730","orcid":"https://orcid.org/0000-0002-0758-9730","contributorId":50100,"corporation":false,"usgs":true,"family":"O'Shea","given":"T. J.","affiliations":[],"preferred":false,"id":388405,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vaughan, T.A.","contributorId":64106,"corporation":false,"usgs":true,"family":"Vaughan","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":388406,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020940,"text":"70020940 - 1999 - Nearshore versus offshore copper loading in Lake Superior sediments: Implications for transport and cycling","interactions":[],"lastModifiedDate":"2024-05-07T11:20:19.729633","indexId":"70020940","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","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":"Nearshore versus offshore copper loading in Lake Superior sediments: Implications for transport and cycling","docAbstract":"A thorough understanding of the fate and transport of metals in Lake Superior is necessary in order to predict the ability of Lake Superior to recover from anthropogenic perturbations (copper mining). Sediment cores were collected from nearshore and offshore sites in Lake Superior and used to evaluate spatial and temporal variations in copper loading associated with mining-related activities. Although both settings have been strongly affected by anthropogenic releases of copper, copper concentrations in nearshore cores are significantly greater than those found in offshore cores, implying that nearshore copper loading is dominated by simple deposition and burial of sediment generated from mining activities. Temporal variations in copper profiles in sediments from nearshore environments closelymimic copper production rates. Conversely, copper loading histories derived from offshore sediments are not well correlated to production rates. The offshore sediment cores, when compared with analogous cores from Lakes Ontario and Michigan, show that the average, lake-wide intensity of copper loading in Lake Superior is comparable to the other two lakes, despite the fact that Lake Superior has received the largest total burden of anthropogenic copper. Cu/Zn ratios, used to evaluate the amount of copper loading derived from mining discharges, vary strongly in nearshore environments in response to loading. Cu/Zn ratios in offshore sediments are much less variable, implying that copper loading may be regulated by additional mechanisms (solution chemistry and/or biologic uptake). Study of trace metal partitioning within Lake Superior sediments indicates that the organic fraction of the sediment contains the majority of the copper. Copper concentrations in offshore sediments are significantly correlated to organic carbon content of the sediment whereas copper concentrations in nearshore sediments are not. These findings support the model that transport and deposition of particles released from mining discharges dominate copper loading in nearshore sediments, whereas biologic uptake and settling of particulate organic matter may regulate copper loading in offshore sediments.
No abstract available.
","language":"English","publisher":"American Society of Ichthyologists and Herpetologists","usgsCitation":"Smith-Vaniz, W., Collette, B.B., and Luckhurst, B.E., 1999, Fishes of Bermuda: history, zoogeography,annotated checklist, and identification keys, 424 p.","productDescription":"424 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314774,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a75556e4b0b28f1184d831","contributors":{"authors":[{"text":"Smith-Vaniz, William F.","contributorId":45635,"corporation":false,"usgs":true,"family":"Smith-Vaniz","given":"William F.","affiliations":[],"preferred":false,"id":589629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collette, Bruce B.","contributorId":24289,"corporation":false,"usgs":true,"family":"Collette","given":"Bruce","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":589630,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luckhurst, Brian E.","contributorId":152527,"corporation":false,"usgs":false,"family":"Luckhurst","given":"Brian","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":589631,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70020997,"text":"70020997 - 1999 - An assessment the effects of human-caused air pollution on resources within the interior Columbia River basin","interactions":[],"lastModifiedDate":"2023-11-14T17:46:34.23891","indexId":"70020997","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":32,"text":"General Technical Report","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"PNW-GTR-447","title":"An assessment the effects of human-caused air pollution on resources within the interior Columbia River basin","docAbstract":"An assessment of existing and potential impacts to vegetation, aquatics, and visibility within the Columbia River basin due to air pollution was conducted as part of the Interior Columbia Basin Ecosystem Management Project. This assessment examined the current situation and potential trends due to pollutants such as ammonium, nitrogen oxides, sulfur oxides, particulates, carbon, and ozone. Ecosystems and resources at risk are identified, including certain forests, lichens, cryptogamic crusts, high elevation lakes and streams, arid lands, and class I areas. Current monitoring data are summarized and air pollution sources identified. The assessment also includes a summary of data gaps and suggestions for future research and monitoring related to air pollution and its effects on resources in the interior Columbia River basin.
","language":"English","publisher":"U. S. Forest Service","doi":"10.2737/PNW-GTR-447","usgsCitation":"Schoettle, A., Tonnessen, K., Turk, J., Vimont, J., Amundson, R., Acheson, A., and Peterson, J., 1999, An assessment the effects of human-caused air pollution on resources within the interior Columbia River basin: General Technical Report PNW-GTR-447, 66 p., https://doi.org/10.2737/PNW-GTR-447.","productDescription":"66 p.","costCenters":[],"links":[{"id":229652,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea1ce4b0c8380cd48633","contributors":{"authors":[{"text":"Schoettle, Anna 0000-0001-8106-5225","orcid":"https://orcid.org/0000-0001-8106-5225","contributorId":221723,"corporation":false,"usgs":false,"family":"Schoettle","given":"Anna","email":"","affiliations":[{"id":16848,"text":"USDA Forest Service, Rocky Mountain Research Station","active":true,"usgs":false}],"preferred":false,"id":388236,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tonnessen, K.","contributorId":77903,"corporation":false,"usgs":true,"family":"Tonnessen","given":"K.","email":"","affiliations":[],"preferred":false,"id":388238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Turk, J.","contributorId":67682,"corporation":false,"usgs":true,"family":"Turk","given":"J.","email":"","affiliations":[],"preferred":false,"id":388235,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vimont, J.","contributorId":106668,"corporation":false,"usgs":true,"family":"Vimont","given":"J.","email":"","affiliations":[],"preferred":false,"id":388239,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Amundson, Ronald","contributorId":59925,"corporation":false,"usgs":true,"family":"Amundson","given":"Ronald","email":"","affiliations":[],"preferred":false,"id":388234,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Acheson, A.","contributorId":30394,"corporation":false,"usgs":true,"family":"Acheson","given":"A.","email":"","affiliations":[],"preferred":false,"id":388233,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Peterson, J.","contributorId":77874,"corporation":false,"usgs":true,"family":"Peterson","given":"J.","affiliations":[],"preferred":false,"id":388237,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70020995,"text":"70020995 - 1999 - Geochemistry of waters from springs, wells, and snowpack on and adjacent to Medicine Lake volcano, northern California","interactions":[],"lastModifiedDate":"2012-03-12T17:19:52","indexId":"70020995","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1827,"text":"Geothermal Resources Council Transactions","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of waters from springs, wells, and snowpack on and adjacent to Medicine Lake volcano, northern California","docAbstract":"Chemical analyses of waters from cold springs and wells of the Medicine Lake volcano and surrounding region indicate small chloride anomalies that may be due to water-rock interaction or limited mixing with high-temperature geothermal fluids. The Fall River Springs (FRS) with a combined discharge of approximately 37 m3/s, show a negative correlation between chloride (Cl) and temperature, implying that the Cl is not derived from a high-temperature geothermal fluid. The high discharge from the FRS indicates recharge over a large geographic region. Chemical and isotopic variations in the FRS show that they contain a mixture of three distinct waters. The isotopic composition of recharge on and adjacent to the volcano are estimated from the isotopic composition of snow and precipitation amounts adjusted for evapotranspiration. Enough recharge of the required isotopic composition (-100 parts per thousand ??D) is available from a combination of the Medicine Lake caldera, the Fall River basin and the Long Bell basin to support the slightly warmer components of the FRS (32 m3/s). The cold-dilute part of the FRS (approximately 5 m3/s) may recharge in the Bear Creek basin or at lower elevations in the Fall River basin.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geothermal Resources Council Transactions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"conferenceTitle":"Global Geothermal Resources: Sustainable Energy for the Future","conferenceDate":"17 October 1999 through 20 October 1999","conferenceLocation":"Reno, NV, USA","language":"English","publisher":"Geothermal Resources Council","publisherLocation":"Davis, CA, United States","issn":"01935933","usgsCitation":"Mariner, R.H., and Lowenstern, J.B., 1999, Geochemistry of waters from springs, wells, and snowpack on and adjacent to Medicine Lake volcano, northern California: Geothermal Resources Council Transactions, v. 23, p. 319-326.","startPage":"319","endPage":"326","numberOfPages":"8","costCenters":[],"links":[{"id":230245,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1729e4b0c8380cd553e0","contributors":{"authors":[{"text":"Mariner, Robert H.","contributorId":81075,"corporation":false,"usgs":true,"family":"Mariner","given":"Robert","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":388230,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lowenstern, Jacob B. 0000-0003-0464-7779 jlwnstrn@usgs.gov","orcid":"https://orcid.org/0000-0003-0464-7779","contributorId":2755,"corporation":false,"usgs":true,"family":"Lowenstern","given":"Jacob","email":"jlwnstrn@usgs.gov","middleInitial":"B.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":388229,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020929,"text":"70020929 - 1999 - Patterns of variation in size and composition of Greater Scaup eggs: Are they related?","interactions":[],"lastModifiedDate":"2017-04-26T15:19:28","indexId":"70020929","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3783,"text":"The Wilson Bulletin","printIssn":"0043-5643","active":true,"publicationSubtype":{"id":10}},"title":"Patterns of variation in size and composition of Greater Scaup eggs: Are they related?","docAbstract":"We studied egg size variation of Greater Scaup (Aythya marila) nesting on the Yukon-Kuskokwim Delta, Alaska from 1991-1996. Mean egg size was 64.36±0.03 (SE) ml. Egg size did not vary with clutch size or serve as an index of body size. There was less than 2% overlap in total clutch volumes for clutches of different sizes indicating that phenotypic clutch size-egg size trade-offs are not occurring among individuals. At the population level, Greater Scaup have less variation in egg size than other species of waterfowl. The proportion of variation in egg size caused by differences among females was 0.20, caused by differences within females among years was 0.25, and caused by differences within females and years (i.e., clutches) was 0.56. The proportion of egg lipid decreased with increasing egg size while the proportion of egg protein increased with egg size. Thus, Greater Scaup appear to trade-off lipid for protein as egg size increases. The proportion of variation that was due to differences among females in total egg protein was 0.79 and in total egg lipid was 0.49. We conclude that in the absence of a fitness trade-off between clutch size and egg size, selection has reduced among-individual variation in egg size.
","language":"English","publisher":"H.W. Wilson Co.","issn":"00435643","usgsCitation":"Flint, P.L., and Grand, J.B., 1999, Patterns of variation in size and composition of Greater Scaup eggs: Are they related?: The Wilson Bulletin, v. 111, no. 4, p. 465-471.","productDescription":"7 p.","startPage":"465","endPage":"471","costCenters":[],"links":[{"id":229882,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":340476,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/4164130"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -165,\n 62\n ],\n [\n -166,\n 62\n ],\n [\n -166,\n 61\n ],\n [\n -165,\n 61\n ],\n [\n -165,\n 62\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"111","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a75ede4b0c8380cd77e12","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":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":388003,"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":388002,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70021024,"text":"70021024 - 1999 - Use of generalized linear models and digital data in a forest inventory of northern Utah","interactions":[],"lastModifiedDate":"2024-02-15T15:31:47.108775","indexId":"70021024","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2151,"text":"Journal of Agricultural, Biological, and Environmental Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Use of generalized linear models and digital data in a forest inventory of northern Utah","docAbstract":"Forest inventories, like those conducted by the Forest Service's Forest Inventory and Analysis Program (FIA) in the Rocky Mountain Region, are under increased pressure to produce better information at reduced costs. Here we describe our efforts in Utah to merge satellite-based information with forest inventory data for the purposes of reducing the costs of estimates of forest population totals and providing spatial depiction of forest resources. We illustrate how generalized linear models can be used to construct approximately unbiased and efficient estimates of population totals while providing a mechanism for prediction in space for mapping of forest structure. We model forest type and timber volume of five tree species groups as functions of a variety of predictor variables in the northern Utah mountains. Predictor variables include elevation, aspect, slope, geographic coordinates, as well as vegetation cover types based on satellite data from both the Advanced Very High Resolution Radiometer (AVHRR) and Thematic Mapper (TM) platforms. We examine the relative precision of estimates of area by forest type and mean cubic-foot volumes under six different models, including the traditional double sampling for stratification strategy. Only very small gains in precision were realized through the use of expensive photointerpreted or TM-based data for stratification, while models based on topography and spatial coordinates alone were competitive. We also compare the predictive capability of the models through various map accuracy measures. The models including the TM-based vegetation performed best overall, while topography and spatial coordinates alone provided substantial information at very low cost.
","language":"English","publisher":"Springer","doi":"10.2307/1400496","issn":"10857117","usgsCitation":"Moisen, G.G., and Edwards, T.C., 1999, Use of generalized linear models and digital data in a forest inventory of northern Utah: Journal of Agricultural, Biological, and Environmental Statistics, v. 4, no. 4, p. 372-390, https://doi.org/10.2307/1400496.","productDescription":"19 p.","startPage":"372","endPage":"390","costCenters":[],"links":[{"id":230047,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -112.12852478027344,\n 41.99726342796974\n ],\n [\n -112.10723876953124,\n 41.918628865183045\n ],\n [\n -112.11273193359375,\n 41.85115059465234\n ],\n [\n -112.06329345703125,\n 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Jr. 0000-0002-0773-0909 tce@usgs.gov","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":2061,"corporation":false,"usgs":true,"family":"Edwards","given":"Thomas","suffix":"Jr.","email":"tce@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":false,"id":388334,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1000715,"text":"1000715 - 1999 - Movement patterns and population characteristics of the Karner blue butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore","interactions":[],"lastModifiedDate":"2022-07-18T16:20:12.953888","indexId":"1000715","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","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":"Movement patterns and population characteristics of the Karner blue butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore","title":"Movement patterns and population characteristics of the Karner blue butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore","docAbstract":"We conducted a three-year mark-release-recapture study of the endangered Karner blue butterfly (Lycaeides melissa samuelis Nabokov) at Indiana Dunes National Lakeshore to describe the butterfly's movement patterns and to assess seasonal changes in the Karner blue's population structure. Estimated mean Karner blue adult life span was less than 3.5 days. Populations exhibited protandry and about a 2:1 male:female sex ratio at population peak within a brood. Ranges, or maximum distances moved by individual butterflies, were typically less than 100 m. Maximum ranges were less than 1 km. These distances are similar to those reported for other lycaenid butterflies and from other studies of the Karner blue in the midwestern United States. At two sites, fewer than 2% of adults had ranges greater than 300 m, while at a third site 4.3% of adults had ranges greater than 300 m. Given typical subpopulation sizes these movement percentages suggest that few adults per generation will move between subpopulations separated by more than 300 m. Movement of individuals between subpopulation sites is important for maintaining genetic diversity within a metapopulation and for recolonizing areas following local extinctions. Therefore, prudent conservation planning should aim for a landscape with habitat patches suitable for Karner blue butterfly occupancy separated by less than 300 m.","language":"English","publisher":"Natural Areas Association","usgsCitation":"Knutson, R.L., Kwilosz, J.R., and Grundel, R., 1999, Movement patterns and population characteristics of the Karner blue butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore: Natural Areas Journal, v. 19, no. 2, p. 109-120.","productDescription":"12 p.","startPage":"109","endPage":"120","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":403917,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/43911820"},{"id":131836,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Indiana","otherGeospatial":"Indiana Dunes National Lakeshore","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -87.12209701538086,\n 41.64777522274766\n ],\n [\n -87.12226867675781,\n 41.638282323504704\n ],\n [\n -87.11111068725586,\n 41.63712768631746\n ],\n [\n -87.11042404174805,\n 41.62814646873234\n ],\n [\n -87.11694717407227,\n 41.625836810523474\n ],\n [\n -87.12209701538086,\n 41.62019063102051\n ],\n [\n -87.13308334350586,\n 41.617880687819856\n ],\n [\n -87.15557098388672,\n 41.619420659146755\n ],\n [\n -87.15900421142577,\n 41.61659735029076\n ],\n [\n -87.17016220092773,\n 41.61634067972058\n ],\n [\n -87.17290878295898,\n 41.61428727838722\n ],\n [\n -87.17428207397461,\n 41.60235058886353\n ],\n [\n -87.14818954467773,\n 41.6019654975922\n ],\n [\n -87.1322250366211,\n 41.60684315055567\n ],\n [\n -87.10819244384766,\n 41.60735656626029\n ],\n [\n -87.09634780883789,\n 41.61300386935704\n ],\n [\n -87.0857048034668,\n 41.62429699241725\n ],\n [\n -87.0721435546875,\n 41.62955788579446\n ],\n [\n -87.0556640625,\n 41.63661450759424\n ],\n [\n -87.03506469726562,\n 41.636871097466624\n ],\n [\n -86.97515487670898,\n 41.67047553815733\n ],\n [\n -86.97515487670898,\n 41.677143036643635\n ],\n [\n -86.92451477050781,\n 41.69957665997156\n ],\n [\n -86.92451477050781,\n 41.70765084930621\n ],\n [\n -86.91644668579102,\n 41.71726165747257\n ],\n [\n -86.92228317260742,\n 41.715339610797706\n ],\n [\n -86.92468643188477,\n 41.71277679248521\n ],\n [\n -86.94133758544922,\n 41.70790715617261\n ],\n [\n -86.94562911987305,\n 41.707138232507916\n ],\n [\n -86.95249557495116,\n 41.7045750872071\n ],\n [\n -86.96554183959961,\n 41.69996116816865\n ],\n [\n -86.99644088745117,\n 41.687912152121875\n ],\n [\n -87.02545166015625,\n 41.677655892535135\n ],\n [\n -87.0472526550293,\n 41.669706166965696\n ],\n [\n -87.06184387207031,\n 41.66521798508633\n ],\n [\n -87.07574844360352,\n 41.66021649957394\n ],\n [\n -87.10149765014648,\n 41.65264941131414\n ],\n [\n -87.12209701538086,\n 41.64777522274766\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"19","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b02e4b07f02db698c69","contributors":{"authors":[{"text":"Knutson, Randy L.","contributorId":72752,"corporation":false,"usgs":true,"family":"Knutson","given":"Randy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":309210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kwilosz, John R.","contributorId":64193,"corporation":false,"usgs":true,"family":"Kwilosz","given":"John","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":309209,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grundel, Ralph 0000-0002-2949-7087 rgrundel@usgs.gov","orcid":"https://orcid.org/0000-0002-2949-7087","contributorId":2444,"corporation":false,"usgs":true,"family":"Grundel","given":"Ralph","email":"rgrundel@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":309208,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70020994,"text":"70020994 - 1999 - Data set incongruence and correlated character evolution: An example of functional convergence in the hind-limbs of stifftail diving ducks","interactions":[],"lastModifiedDate":"2025-09-15T15:46:21.70157","indexId":"70020994","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3510,"text":"Systematic Biology","active":true,"publicationSubtype":{"id":10}},"title":"Data set incongruence and correlated character evolution: An example of functional convergence in the hind-limbs of stifftail diving ducks","docAbstract":"The unwitting inclusion of convergent characters in phylogenetic estimates poses a serious problem for efforts to recover phylogeny. Convergence is not inscrutable, however, particularly when one group of characters tracks phylogeny and another set tracks adaptive history. In such cases, convergent characters may be correlated with one or a few functional anatomical units and readily identifiable by using comparative methods. Stifftail ducks (Oxyurinae) offer one such opportunity to study correlated character evolution and function in the context of phylogenetic reconstruction. Morphological analyses place stifftail ducks as part of a large clade of diving ducks that includes the sea ducks (Mergini), Hymenolaimus, Merganetta, and Tachyeres, and possibly the pochards (Aythyini). Molecular analyses, on the other hand, place stifftails far from other diving ducks and suggest, moreover, that stifftails are polyphyletic. Mitochondrial cytochrome b gene sequences of eight stifftail species traditionally supposed to form a clade were compared with each other and with sequences from 50 other anseriform and galliform species. Stifftail ducks are not the sister group of sea ducks but lie outside the typical ducks (Anatinae). Of the four traditional stifftail genera, monophyly of Oxyura and its sister group relationship with Nomonyx are strongly supported. Heteronetta probably is the sister group of that clade, but support is weak. Biziura is not a true stifftail. Within Oxyura, Old World species (O. australis, O. leucocephala, O. maccoa) appear to form a clade, with New World species (O. jamaicensis, O. vittata) branching basally. Incongruence between molecules and morphology is interpreted to be the result of adaptive specialization and functional convergence in the hind limbs of Biziura and true stifftails. When morphological characters are divided into classes, only hind-limb characters are significantly in conflict with the molecular tree. Likewise, null models of synonymous and nonsynonymous substitution based on patterns of codon-degeneracy and chemical dissimilarity indicate that the nucleotide and amino acid changes postulated by the molecular tree are more plausible than those postulated by the morphological tree. These findings teach general lessons about the utility of highly adaptive characters (in particular those related to foraging ecology) and underscore the problems that convergence can pose for attempts to recover phylogeny. They also demonstrate how the concept of natural data partitions and simple models of evolution (e.g., parsimony, likelihood, neutrality) can be used to test the accuracy of independent phylogenetic estimates and provide arguments in favor of one tree topology over another.
","language":"English","publisher":"Oxford Academic","doi":"10.1080/106351599259979","issn":"10635157","usgsCitation":"McCracken, K.G., Harshman, J., Mcclellan, D.A., and Afton, A., 1999, Data set incongruence and correlated character evolution: An example of functional convergence in the hind-limbs of stifftail diving ducks: Systematic Biology, v. 48, no. 4, p. 683-714, https://doi.org/10.1080/106351599259979.","productDescription":"32 p.","startPage":"683","endPage":"714","numberOfPages":"32","costCenters":[],"links":[{"id":495734,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/106351599259979","text":"Publisher Index Page"},{"id":230244,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"4","noUsgsAuthors":false,"publicationDate":"1999-10-01","publicationStatus":"PW","scienceBaseUri":"5059fdb7e4b0c8380cd4e93b","contributors":{"authors":[{"text":"McCracken, K. G.","contributorId":7431,"corporation":false,"usgs":true,"family":"McCracken","given":"K.","middleInitial":"G.","affiliations":[],"preferred":false,"id":388225,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harshman, J.","contributorId":15785,"corporation":false,"usgs":true,"family":"Harshman","given":"J.","email":"","affiliations":[],"preferred":false,"id":388226,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mcclellan, D. A.","contributorId":81654,"corporation":false,"usgs":true,"family":"Mcclellan","given":"D.","middleInitial":"A.","affiliations":[],"preferred":false,"id":388227,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Afton, A. D.","contributorId":83467,"corporation":false,"usgs":true,"family":"Afton","given":"A. D.","affiliations":[],"preferred":false,"id":388228,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70020928,"text":"70020928 - 1999 - Response of North American freshwater lakes to simulated future climates","interactions":[],"lastModifiedDate":"2012-03-12T17:19:47","indexId":"70020928","displayToPublicDate":"1999-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Response of North American freshwater lakes to simulated future climates","docAbstract":"We apply a physically based lake model to assess the response of North American lakes to future climate conditions as portrayed by the transient trace-gas simulations conducted with the Max Planck Institute (ECHAM4) and the Canadian Climate Center (CGCM1) atmosphere-ocean general circulation models (A/OGCMs). To quantify spatial patterns of lake responses (temperature, mixing, ice cover, evaporation) we ran the lake model for theoretical lakes of specified area, depth, and transparency over a uniformly spaced (50 km) grid. The simulations were conducted for two 10-year periods that represent present climatic conditions and those around the time of CO2 doubling. Although the climate model output produces simulated lake responses that differ in specific regional details, there is broad agreement with regard to the direction and area of change. In particular, lake temperatures are generally warmer in the future as a result of warmer climatic conditions and a substantial loss (> 100 days/yr) of winter ice cover. Simulated summer lake temperatures are higher than 30??C ever the Midwest and south, suggesting the potential for future disturbance of existing aquatic ecosystems. Overall increases in lake evaporation combine with disparate changes in A/OGCM precipitation to produce future changes in net moisture (precipitation minus evaporation) that are of less fidelity than those of lake temperature.","largerWorkTitle":"Journal of the American Water Resources Association","language":"English","publisher":"American Water Resources Assoc","publisherLocation":"Herndon, VA, United States","issn":"1093474X","usgsCitation":"Hostetler, S.W., and Small, E., 1999, Response of North American freshwater lakes to simulated future climates, in Journal of the American Water Resources Association, v. 35, no. 6, p. 1625-1637.","startPage":"1625","endPage":"1637","numberOfPages":"13","costCenters":[],"links":[{"id":229881,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaa1be4b0c8380cd8614e","contributors":{"authors":[{"text":"Hostetler, S. W. 0000-0003-2272-8302","orcid":"https://orcid.org/0000-0003-2272-8302","contributorId":42911,"corporation":false,"usgs":true,"family":"Hostetler","given":"S.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":388000,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Small, E.E.","contributorId":56403,"corporation":false,"usgs":true,"family":"Small","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":388001,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}