{"pageNumber":"161","pageRowStart":"4000","pageSize":"25","recordCount":11370,"records":[{"id":70028863,"text":"70028863 - 2006 - Comparison of the effects and performance of four types of radiotransmitters for use with scoters","interactions":[],"lastModifiedDate":"2018-05-13T12:00:34","indexId":"70028863","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Comparison of the effects and performance of four types of radiotransmitters for use with scoters","docAbstract":"<p>Radiotransmitters are widely used in wildlife ecology, often providing data that cannot be collected using other methods. However, negative effects have been associated with the use of transmitters for some species. We evaluated the effects and performance of 4 radiotransmitter types for use with surf and white-winged scoters (Melanitta perspicillata and M. fusca): COEXT-coelomically implanted transmitters with external antennas, COINT-coelomically implanted transmitters with internal antennas, SUBCU-subcutaneous implants with external antennas, and PRONG-external mounts, attached by a subcutaneous anchor and glue, with external antennas. Survival was not related to radiotransmitter type during the immediate (14-d) post-release period when most deaths (8 of 12) occurred. Rates of signal disappearance (transmitters ceased to be detected in the study area) and transmitter shedding (transmitters recovered without sign of predation) were similar among types over 30- and 60-day intervals; however, higher proportions of dorsally mounted radiotransmitters (SUBCU, PRONG) disappeared or were shed over course of the full 100-day monitoring period used in this study. All 4 radiotransmitter types allowed for relatively accurate location estimates, with linear error estimates (distance between actual and estimated location) averaging 2 months in duration and for satellite telemetry studies of scoters. However, SUBCU and PRONG are recommended as cost-effective alternatives in shorter-duration radiotelemetry studies.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wildlife Society Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/0091-7648(2006)34[656:COTEAP]2.0.CO;2","issn":"00917648","usgsCitation":"Iverson, S.A., Boyd, W.S., Esler, D., Mulcahy, D., and Bowman, T.D., 2006, Comparison of the effects and performance of four types of radiotransmitters for use with scoters: Wildlife Society Bulletin, v. 34, no. 3, p. 656-663, https://doi.org/10.2193/0091-7648(2006)34[656:COTEAP]2.0.CO;2.","startPage":"656","endPage":"663","numberOfPages":"8","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":236619,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209876,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/0091-7648(2006)34[656:COTEAP]2.0.CO;2"}],"volume":"34","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f8abe4b0c8380cd4d1fa","contributors":{"authors":[{"text":"Iverson, S. A.","contributorId":22556,"corporation":false,"usgs":true,"family":"Iverson","given":"S.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":420075,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boyd, W. S.","contributorId":49051,"corporation":false,"usgs":true,"family":"Boyd","given":"W.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":420077,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Esler, Daniel 0000-0001-5501-4555 desler@usgs.gov","orcid":"https://orcid.org/0000-0001-5501-4555","contributorId":5465,"corporation":false,"usgs":true,"family":"Esler","given":"Daniel","email":"desler@usgs.gov","affiliations":[{"id":12437,"text":"Simon Fraser University, Centre for Wildlife Ecology","active":true,"usgs":false},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":420074,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mulcahy, D.M.","contributorId":43302,"corporation":false,"usgs":true,"family":"Mulcahy","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":420076,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bowman, Timothy D.","contributorId":80779,"corporation":false,"usgs":false,"family":"Bowman","given":"Timothy","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":420078,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028905,"text":"70028905 - 2006 - Testing the junk-food hypothesis on marine birds: Effects of prey type on growth and development","interactions":[],"lastModifiedDate":"2017-11-18T09:34:13","indexId":"70028905","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Testing the junk-food hypothesis on marine birds: Effects of prey type on growth and development","docAbstract":"<p>The junk-food hypothesis attributes declines in productivity of marine birds and mammals to changes in the species of prey they consume and corresponding differences in nutritional quality of those prey. To test this hypothesis nestling Black-legged Kittiwakes (Rissa tridactyla) and Tufted Puffins (Fratercula cirrhata) were raised in captivity under controlled conditions to determine whether the type and quality of fish consumed by young seabirds constrains their growth and development. Some nestlings were fed rations of Capelin (Mallotus villosus), Herring (Clupea pallasi) or Sand Lance (Ammodytes hexapterus) and their growth was compared with nestlings raised on equal biomass rations of Walleye Pollock (Theragra chalcograma). Nestlings fed rations of herring, sand lance, or capelin experienced higher growth increments than nestlings fed pollock. The energy density of forage fish fed to nestlings had a marked effect on growth increments and could be expected to have an effect on pre- and post-fledging survival of nestlings in the wild. These results provide empirical support for the junk-food hypothesis.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Waterbirds","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1675/1524-4695(2006)29[407:TTJHOM]2.0.CO;2","issn":"15244695","usgsCitation":"Romano, M.D., Piatt, J.F., and Roby, D., 2006, Testing the junk-food hypothesis on marine birds: Effects of prey type on growth and development: Waterbirds, v. 29, no. 4, p. 407-414, https://doi.org/10.1675/1524-4695(2006)29[407:TTJHOM]2.0.CO;2.","productDescription":"8 p.","startPage":"407","endPage":"414","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":209616,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/1524-4695(2006)29[407:TTJHOM]2.0.CO;2"},{"id":236271,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba5d5e4b08c986b320cf7","contributors":{"authors":[{"text":"Romano, Marc D.","contributorId":73528,"corporation":false,"usgs":true,"family":"Romano","given":"Marc","email":"","middleInitial":"D.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":false,"id":420496,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":420497,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roby, D.D. 0000-0001-9844-0992","orcid":"https://orcid.org/0000-0001-9844-0992","contributorId":70944,"corporation":false,"usgs":true,"family":"Roby","given":"D.D.","affiliations":[],"preferred":false,"id":420495,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028917,"text":"70028917 - 2006 - Evaluation of aerial survey methods for Dall's sheep","interactions":[],"lastModifiedDate":"2017-03-22T08:10:05","indexId":"70028917","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Evaluation of aerial survey methods for Dall's sheep","docAbstract":"<p><span>Most Dall's sheep (</span><i>Ovis dalli dalli</i><span>) population-monitoring efforts use intensive aerial surveys with no attempt to estimate variance or adjust for potential sightability bias. We used radiocollared sheep to assess factors that could affect sightability of Dall's sheep in standard fixed-wing and helicopter surveys and to evaluate feasibility of methods that might account for sightability bias. Work was conducted in conjunction with annual aerial surveys of Dall's sheep in the western Baird Mountains, Alaska, USA, in 2000–2003. Overall sightability was relatively high compared with other aerial wildlife surveys, with 88% of the available, marked sheep detected in our fixed-wing surveys. Total counts from helicopter surveys were not consistently larger than counts from fixed-wing surveys of the same units, and detection probabilities did not differ for the 2 aircraft types. Our results suggest that total counts from helicopter surveys cannot be used to obtain reliable estimates of detection probabilities for fixed-wing surveys. Groups containing radiocollared sheep often changed in size and composition before they could be observed by a second crew in units that were double-surveyed. Double-observer methods that require determination of which groups were detected by each observer will be infeasible unless survey procedures can be modified so that groups remain more stable between observations. Mean group sizes increased during our study period, and our logistic regression sightability model indicated that detection probabilities increased with group size. Mark–resight estimates of annual population sizes were similar to sightability-model estimates, and confidence intervals overlapped broadly. We recommend the sightability-model approach as the most effective and feasible of the alternatives we considered for monitoring Dall's sheep populations.</span></p>","language":"English","publisher":"Wiley","doi":"10.2193/0091-7648(2006)34[732:EOASMF]2.0.CO;2","issn":"00917648","usgsCitation":"Udevitz, M.S., Shults, B.S., Adams, L., and Kleckner, C., 2006, Evaluation of aerial survey methods for Dall's sheep: Wildlife Society Bulletin, v. 34, no. 3, p. 732-740, https://doi.org/10.2193/0091-7648(2006)34[732:EOASMF]2.0.CO;2.","productDescription":"9 p.","startPage":"732","endPage":"740","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":236414,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Baird Mountains","volume":"34","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c3be4b0c8380cd52aba","contributors":{"authors":[{"text":"Udevitz, Mark S. 0000-0003-4659-138X mudevitz@usgs.gov","orcid":"https://orcid.org/0000-0003-4659-138X","contributorId":3189,"corporation":false,"usgs":true,"family":"Udevitz","given":"Mark","email":"mudevitz@usgs.gov","middleInitial":"S.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":420546,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shults, Brad S.","contributorId":46413,"corporation":false,"usgs":true,"family":"Shults","given":"Brad","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":420548,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, Layne G. 0000-0001-6212-2896 ladams@usgs.gov","orcid":"https://orcid.org/0000-0001-6212-2896","contributorId":2776,"corporation":false,"usgs":true,"family":"Adams","given":"Layne G.","email":"ladams@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":420547,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kleckner, Christopher","contributorId":179099,"corporation":false,"usgs":true,"family":"Kleckner","given":"Christopher","email":"","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":false,"id":420545,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028946,"text":"70028946 - 2006 - Interspecific resource partitioning in sympatric ursids","interactions":[],"lastModifiedDate":"2018-03-29T11:13:10","indexId":"70028946","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Interspecific resource partitioning in sympatric ursids","docAbstract":"<p><span>The fundamental niche of a species is rarely if ever realized because the presence of other species restricts it to a narrower range of ecological conditions. The effects of this narrower range of conditions define how resources are partitioned. Resource partitioning has been inferred but not demonstrated previously for sympatric ursids. We estimated assimilated diet in relation to body condition (body fat and lean and total body mass) and reproduction for sympatric brown bears (Ursus arctos) and American black bears (U. americanus) in south‐central Alaska, 1998</span><strong>–</strong><span>2000. Based on isotopic analysis of blood and keratin in claws, salmon (Oncorhynchus spp.) predominated in brown bear diets (&gt;53% annually) whereas black bears assimilated 0</span><strong>–</strong><span>25% salmon annually. Black bears did not exploit salmon during a year with below average spawning numbers, probably because brown bears deterred black bear access to salmon. Proportion of salmon in assimilated diet was consistent across years for brown bears and represented the major portion of their diet. Body size of brown bears in the study area approached mean body size of several coastal brown bear populations, demonstrating the importance of salmon availability to body condition. Black bears occurred at a comparable density (mass : mass), but body condition varied and was related directly to the amount of salmon assimilated in their diet. Both species gained most lean body mass during spring and all body fat during summer when salmon were present. Improved body condition (i.e., increased percentage body fat) from salmon consumption reduced catabolism of lean body mass during hibernation, resulting in better body condition the following spring. Further, black bear reproduction was directly related to body condition; reproductive rates were reduced when body condition was lower. High body fat content across years for brown bears was reflected in consistently high reproductive levels. We suggest that the fundamental niche of black bears was constrained by brown bears through partitioning of food resources, which varied among years. Reduced exploitation of salmon caused black bears to rely more extensively on less reliable or nutritious food sources (e.g., moose [Alces alces], berries) resulting in lowered body condition and subsequent reproduction.</span></p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/1051-0761(2006)016[2333:IRPISU]2.0.CO;2","usgsCitation":"Belant, J.L., Kielland, K., Follmann, E., and Adams, L., 2006, Interspecific resource partitioning in sympatric ursids: Ecological Applications, v. 16, no. 6, p. 2333-2343, https://doi.org/10.1890/1051-0761(2006)016[2333:IRPISU]2.0.CO;2.","productDescription":"11 p.","startPage":"2333","endPage":"2343","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":236420,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3dafe4b0c8380cd63766","contributors":{"authors":[{"text":"Belant, Jerrold L.","contributorId":108394,"corporation":false,"usgs":false,"family":"Belant","given":"Jerrold","email":"","middleInitial":"L.","affiliations":[{"id":35599,"text":"Carnivore Ecology Laboratory, Mississippi State University, Mississippi State, MS","active":true,"usgs":false}],"preferred":false,"id":420675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kielland, Knut","contributorId":189214,"corporation":false,"usgs":false,"family":"Kielland","given":"Knut","email":"","affiliations":[],"preferred":false,"id":420674,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Follmann, Erich H.","contributorId":75049,"corporation":false,"usgs":true,"family":"Follmann","given":"Erich H.","affiliations":[],"preferred":false,"id":420672,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Adams, Layne G. 0000-0001-6212-2896 ladams@usgs.gov","orcid":"https://orcid.org/0000-0001-6212-2896","contributorId":2776,"corporation":false,"usgs":true,"family":"Adams","given":"Layne G.","email":"ladams@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":420673,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031195,"text":"70031195 - 2006 - Effects of El Niño on distribution and reproductive performance of Black Brant","interactions":[],"lastModifiedDate":"2017-02-21T12:12:21","indexId":"70031195","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Effects of El Niño on distribution and reproductive performance of Black Brant","docAbstract":"<p>Climate in low-latitude wintering areas may influence temperate and high-latitude breeding populations of birds, but demonstrations of such relationships have been rare because of difficulties in linking wintering with breeding populations. We used long-term aerial surveys in Mexican wintering areas and breeding areas in Alaska, USA, to assess numbers of Black Brant (<i>Branta bernicla nigricans</i>; hereafter brant) on their principal wintering and breeding area in El Niño and non-El Niño years. We used Pollock's robust design to directly estimate probability of breeding and apparent annual survival of individually marked brant at the Tutakoke River (TR) colony, Alaska, in each year between 1988 and 2001. Fewer brant wintered in Mexico during every El Niño event since 1965. Fewer brant were observed on the principal breeding area following each El Niño since surveys began in 1985. Probability of breeding was negatively related to January sea surface temperature along the subtropical coast of North America during the preceding winter. Between 23% (five-year-olds or older) and 30% (three-year-olds) fewer brant nested in 1998 following the strong El Niño event in the winter of 1997–1998 than in non-El Niño years. This finding is consistent with life history theory, which predicts that longer-lived species preserve adult survival at the expense of reproduction. Oceanographic conditions off Baja California, apparently by their effect on Zostera marina (eelgrass), strongly influence winter distribution of brant geese and their reproduction (but not survival), which in turn affects ecosystem dynamics in Alaska.</p>","language":"English","publisher":"Wiley","doi":"10.1890/04-1013","issn":"00129658","usgsCitation":"Sedinger, J.S., Ward, D.H., Schamber, J.L., Butler, W., Eldridge, W., Conant, B., Voelzer, J.F., Chelgren, N., and Herzog, M., 2006, Effects of El Niño on distribution and reproductive performance of Black Brant: Ecology, v. 87, no. 1, p. 151-159, https://doi.org/10.1890/04-1013.","productDescription":"9 p.","startPage":"151","endPage":"159","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":238882,"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":"87","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a064fe4b0c8380cd511cb","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":430466,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ward, David H. 0000-0002-5242-2526 dward@usgs.gov","orcid":"https://orcid.org/0000-0002-5242-2526","contributorId":3247,"corporation":false,"usgs":true,"family":"Ward","given":"David","email":"dward@usgs.gov","middleInitial":"H.","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":430464,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schamber, Jason L.","contributorId":72512,"corporation":false,"usgs":true,"family":"Schamber","given":"Jason","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430469,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Butler, William I.","contributorId":181918,"corporation":false,"usgs":false,"family":"Butler","given":"William I.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":430470,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Eldridge, William D.","contributorId":36808,"corporation":false,"usgs":true,"family":"Eldridge","given":"William D.","affiliations":[],"preferred":false,"id":430467,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Conant, Bruce","contributorId":37596,"corporation":false,"usgs":true,"family":"Conant","given":"Bruce","affiliations":[],"preferred":false,"id":430468,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Voelzer, James F.","contributorId":64710,"corporation":false,"usgs":true,"family":"Voelzer","given":"James","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":430465,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Chelgren, Nathan 0000-0003-0944-9165 nchelgren@usgs.gov","orcid":"https://orcid.org/0000-0003-0944-9165","contributorId":3134,"corporation":false,"usgs":true,"family":"Chelgren","given":"Nathan","email":"nchelgren@usgs.gov","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":430462,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Herzog, Mark P. mherzog@usgs.gov","contributorId":3965,"corporation":false,"usgs":true,"family":"Herzog","given":"Mark P.","email":"mherzog@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":430463,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70031122,"text":"70031122 - 2006 - Comparison of remotely deployed satellite radio transmitters on walruses","interactions":[],"lastModifiedDate":"2018-05-13T12:24:03","indexId":"70031122","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2671,"text":"Marine Mammal Science","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of remotely deployed satellite radio transmitters on walruses","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1748-7692.2006.00018.x","issn":"08240469","usgsCitation":"Jay, C., Heide-Jorgensen, M., Fischbach, A., Jensen, M., Tessler, D., and Jensen, A., 2006, Comparison of remotely deployed satellite radio transmitters on walruses: Marine Mammal Science, v. 22, no. 1, p. 226-236, https://doi.org/10.1111/j.1748-7692.2006.00018.x.","productDescription":"11 p.","startPage":"226","endPage":"236","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":477722,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1748-7692.2006.00018.x","text":"Publisher Index Page"},{"id":238544,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-01-10","publicationStatus":"PW","scienceBaseUri":"5059f888e4b0c8380cd4d180","contributors":{"authors":[{"text":"Jay, C.V. 0000-0002-9559-2189","orcid":"https://orcid.org/0000-0002-9559-2189","contributorId":67827,"corporation":false,"usgs":true,"family":"Jay","given":"C.V.","affiliations":[],"preferred":false,"id":430132,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heide-Jorgensen, M. P.","contributorId":18573,"corporation":false,"usgs":true,"family":"Heide-Jorgensen","given":"M. P.","affiliations":[],"preferred":false,"id":430130,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fischbach, Anthony S. 0000-0002-6555-865X afischbach@usgs.gov","orcid":"https://orcid.org/0000-0002-6555-865X","contributorId":200780,"corporation":false,"usgs":true,"family":"Fischbach","given":"Anthony S.","email":"afischbach@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":430129,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jensen, M.V.","contributorId":105117,"corporation":false,"usgs":true,"family":"Jensen","given":"M.V.","email":"","affiliations":[],"preferred":false,"id":430134,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tessler, D.F.","contributorId":99366,"corporation":false,"usgs":true,"family":"Tessler","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":430133,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jensen, A.V.","contributorId":33120,"corporation":false,"usgs":true,"family":"Jensen","given":"A.V.","email":"","affiliations":[],"preferred":false,"id":430131,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031088,"text":"70031088 - 2006 - Predictable hotspots and foraging habitat of the endangered short-tailed albatross (Phoebastria albatrus) in the North Pacific: Implications for conservation","interactions":[],"lastModifiedDate":"2017-07-19T15:17:50","indexId":"70031088","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1371,"text":"Deep-Sea Research Part II: Topical Studies in Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Predictable hotspots and foraging habitat of the endangered short-tailed albatross (Phoebastria albatrus) in the North Pacific: Implications for conservation","docAbstract":"<p><span>The short-tailed albatross (</span><i>Phoebastria albatrus</i><span>) is a rare and endangered seabird that ranges widely over the northern North Pacific. Populations are slowly recovering but birds face several threats at sea, in particular the incidental capture of birds in long-line fisheries. Conservation efforts are hampered by a lack of information about the at-sea distribution of this species, especially knowledge of where it may predictably co-occur with long-line fishing effort. During 18 years of transiting the Aleutian Islands Unit of the Alaska Maritime National Wildlife Refuge on a research vessel, we observed short-tailed albatross on 65 occasions. They were consistently observed near Ingenstrem Rocks (Buldir Pass) in the western Aleutians and near Seguam Pass in the central Aleutians. Based on the oceanographic characteristics of the locations where we saw most of the birds, we hypothesized that short-tailed albatross &ldquo;hotspots&rdquo; were located where tidal currents and steep bottom topography generate strong vertical mixing along the Aleutian Archipelago. As a test of this hypothesis, we analyzed a database containing 1432 opportunistic observations of 2463 short-tailed albatross at sea in the North Pacific. These data showed that short-tailed albatross were closely associated with shelf-edge habitats throughout the northern Gulf of Alaska and Bering Sea. In addition to Ingenstrem Rocks and Seguam Pass, important hotspots for short-tailed albatross in the Aleutians included Near Strait, Samalga Pass, and the shelf-edge south of Umnak/Unalaska islands. In the Bering Sea, hotspots were located along margins of Zhemchug, St. Matthews and Pervenets canyons. Because these short-tailed albatross hotspots are predictable, they are also protectable by regulation of threatening activities at local spatial scales.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.dsr2.2006.01.008","issn":"09670645","usgsCitation":"Piatt, J.F., Wetzel, J., Bell, K., DeGange, A., Balogh, G., Drew, G., Geernaert, T., Ladd, C., and Byrd, G., 2006, Predictable hotspots and foraging habitat of the endangered short-tailed albatross (Phoebastria albatrus) in the North Pacific: Implications for conservation: Deep-Sea Research Part II: Topical Studies in Oceanography, v. 53, no. 3-4, p. 387-398, https://doi.org/10.1016/j.dsr2.2006.01.008.","productDescription":"12 p.","startPage":"387","endPage":"398","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238542,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211278,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.dsr2.2006.01.008"}],"volume":"53","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a818ae4b0c8380cd7b5a6","contributors":{"authors":[{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":429972,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wetzel, J.","contributorId":64113,"corporation":false,"usgs":true,"family":"Wetzel","given":"J.","email":"","affiliations":[],"preferred":false,"id":429969,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bell, K.","contributorId":45971,"corporation":false,"usgs":true,"family":"Bell","given":"K.","email":"","affiliations":[],"preferred":false,"id":429967,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"DeGange, A.R.","contributorId":52105,"corporation":false,"usgs":true,"family":"DeGange","given":"A.R.","email":"","affiliations":[],"preferred":false,"id":429968,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Balogh, G.R.","contributorId":74349,"corporation":false,"usgs":true,"family":"Balogh","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":429971,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Drew, G.S.","contributorId":95415,"corporation":false,"usgs":true,"family":"Drew","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":429973,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Geernaert, T.","contributorId":104350,"corporation":false,"usgs":true,"family":"Geernaert","given":"T.","email":"","affiliations":[],"preferred":false,"id":429974,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ladd, C.","contributorId":68607,"corporation":false,"usgs":true,"family":"Ladd","given":"C.","email":"","affiliations":[],"preferred":false,"id":429970,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Byrd, G.V.","contributorId":39320,"corporation":false,"usgs":true,"family":"Byrd","given":"G.V.","email":"","affiliations":[],"preferred":false,"id":429966,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70031007,"text":"70031007 - 2006 - Scaling uncertainties in estimating canopy foliar maintenance respiration for black spruce ecosystems in Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031007","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2764,"text":"Mitigation and Adaptation Strategies for Global Change","active":true,"publicationSubtype":{"id":10}},"title":"Scaling uncertainties in estimating canopy foliar maintenance respiration for black spruce ecosystems in Alaska","docAbstract":"A major challenge confronting the scientific community is to understand both patterns of and controls over spatial and temporal variability of carbon exchange between boreal forest ecosystems and the atmosphere. An understanding of the sources of variability of carbon processes at fine scales and how these contribute to uncertainties in estimating carbon fluxes is relevant to representing these processes at coarse scales. To explore some of the challenges and uncertainties in estimating carbon fluxes at fine to coarse scales, we conducted a modeling analysis of canopy foliar maintenance respiration for black spruce ecosystems of Alaska by scaling empirical hourly models of foliar maintenance respiration (Rm) to estimate canopy foliar Rm for individual stands. We used variation in foliar N concentration among stands to develop hourly stand-specific models and then developed an hourly pooled model. An uncertainty analysis identified that the most important parameter affecting estimates of canopy foliar Rm was one that describes R m at 0??C per g N, which explained more than 55% of variance in annual estimates of canopy foliar Rm. The comparison of simulated annual canopy foliar Rm identified significant differences between stand-specific and pooled models for each stand. This result indicates that control over foliar N concentration should be considered in models that estimate canopy foliar Rm of black spruce stands across the landscape. In this study, we also temporally scaled the hourly stand-level models to estimate canopy foliar Rm of black spruce stands using mean monthly temperature data. Comparisons of monthly Rm between the hourly and monthly versions of the models indicated that there was very little difference between the estimates of hourly and monthly models, suggesting that hourly models can be aggregated to use monthly input data with little loss of precision. We conclude that uncertainties in the use of a coarse-scale model for estimating canopy foliar Rm at regional scales depend on uncertainties in representing needle-level respiration and on uncertainties in representing the spatial variability of canopy foliar N across a region. The development of spatial data sets of canopy foliar N represents a major challenge in estimating canopy foliar maintenance respiration at regional scales. ?? Springer 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mitigation and Adaptation Strategies for Global Change","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11027-006-1015-5","issn":"13812386","usgsCitation":"Zhang, X., McGuire, A., and Ruess, R.W., 2006, Scaling uncertainties in estimating canopy foliar maintenance respiration for black spruce ecosystems in Alaska: Mitigation and Adaptation Strategies for Global Change, v. 11, no. 1, p. 147-174, https://doi.org/10.1007/s11027-006-1015-5.","startPage":"147","endPage":"174","numberOfPages":"28","costCenters":[],"links":[{"id":211480,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11027-006-1015-5"},{"id":238775,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-01-01","publicationStatus":"PW","scienceBaseUri":"505b871ce4b08c986b316302","contributors":{"authors":[{"text":"Zhang, X.","contributorId":30193,"corporation":false,"usgs":true,"family":"Zhang","given":"X.","email":"","affiliations":[],"preferred":false,"id":429613,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, A. D.","contributorId":16552,"corporation":false,"usgs":true,"family":"McGuire","given":"A. D.","affiliations":[],"preferred":false,"id":429612,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruess, Roger W.","contributorId":45483,"corporation":false,"usgs":false,"family":"Ruess","given":"Roger","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":429614,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030977,"text":"70030977 - 2006 - Quiescent deformation of the Aniakchak Caldera, Alaska mapped by InSAR","interactions":[],"lastModifiedDate":"2017-04-11T15:57:38","indexId":"70030977","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Quiescent deformation of the Aniakchak Caldera, Alaska mapped by InSAR","docAbstract":"<p><span>The 10-km-wide caldera of the historically active Aniakchak volcano, Alaska, subsides ∼13 mm/yr, based on data from 19 European Remote Sensing Satellite (ERS-1 and ERS-2) interferometric synthetic aperture radar (InSAR) images from 1992 through 2002. The pattern of subsidence does not reflect the distribution of pyroclastic deposits from the last eruption in 1931 and therefore is not related to compaction of fragmental debris. Weighted least-squares inversion of the deformation maps indicates a relatively constant subsidence rate. Modeling the deformation with a Mogi point source locates the source of subsidence at ∼4 km below the central caldera floor, which is consistent with the inferred depth of magma storage before the 1931 eruption. Magmatic CO</span><sub>2</sub><span> and He have been measured at a warm soda spring within the caldera, and several sub-boiling fumaroles persist elsewhere in the caldera. These observations suggest that recent subsidence can be explained by the cooling or degassing of a shallow magma body (∼4 km deep), and/or the reduction of the pore-fluid pressure of a cooling hydrothermal system. Ongoing deformation of the volcano detected by InSAR, in combination with magmatic gas output from at least one warm spring, and infrequent low-level bursts of seismicity below the caldera, indicate that the volcanic system is still active and requires close attention for the timely detection of possible hazards.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/G22015.1","issn":"00917613","usgsCitation":"Kwoun, O., Lu, Z., Neal, C.A., and Wicks, C., 2006, Quiescent deformation of the Aniakchak Caldera, Alaska mapped by InSAR: Geology, v. 34, no. 1, p. 5-8, https://doi.org/10.1130/G22015.1.","productDescription":"4 p.","startPage":"5","endPage":"8","numberOfPages":"4","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":488543,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/g22015.1","text":"Publisher Index Page"},{"id":238868,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"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              -159.0765380859375,\n              56.32567522544464\n            ],\n            [\n              -159.0765380859375,\n              57.25528054528889\n            ],\n            [\n              -156.9891357421875,\n              57.25528054528889\n            ],\n            [\n              -156.9891357421875,\n              56.32567522544464\n            ],\n            [\n              -159.0765380859375,\n              56.32567522544464\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"34","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9317e4b0c8380cd80be6","contributors":{"authors":[{"text":"Kwoun, Oh-Ig","contributorId":41945,"corporation":false,"usgs":true,"family":"Kwoun","given":"Oh-Ig","email":"","affiliations":[],"preferred":false,"id":429477,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, Zhong 0000-0001-9181-1818 lu@usgs.gov","orcid":"https://orcid.org/0000-0001-9181-1818","contributorId":901,"corporation":false,"usgs":true,"family":"Lu","given":"Zhong","email":"lu@usgs.gov","affiliations":[],"preferred":true,"id":429480,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neal, Christina A. 0000-0002-7697-7825 tneal@usgs.gov","orcid":"https://orcid.org/0000-0002-7697-7825","contributorId":131135,"corporation":false,"usgs":true,"family":"Neal","given":"Christina","email":"tneal@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":429479,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wicks, Charles W. Jr. cwicks@usgs.gov","contributorId":3476,"corporation":false,"usgs":true,"family":"Wicks","given":"Charles W.","suffix":"Jr.","email":"cwicks@usgs.gov","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":429478,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030970,"text":"70030970 - 2006 - Site-specific effects on productivity of an upper trophic-level marine predator: Bottom-up, top-down, and mismatch effects on reproduction in a colonial seabird","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70030970","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3194,"text":"Progress in Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Site-specific effects on productivity of an upper trophic-level marine predator: Bottom-up, top-down, and mismatch effects on reproduction in a colonial seabird","docAbstract":"We investigated the relative roles of bottom-up and top-down factors in limiting productivity of an upper trophic level marine predator. Our primary working hypothesis was that the reproductive success of black-legged kittiwakes (Rissa tridactyla) a piscivorous, colonial-nesting seabird, was most limited by the abundance, distribution, and species composition of surface-schooling forage fishes. A secondary working hypothesis was that reproductive loss to kittiwake nest predators was greatest during years of reduced prey availability. We report on a broad-scale, integrated study of kittiwakes and their prey in Prince William Sound, Alaska. Our study spanned five breeding seasons (1995-1999) and focused on three colonies that differed in size (ranging from ca. 220 to ca. 7000 breeding pairs) and proximity to each other (50-135 km apart). Kittiwakes in PWS encountered a variety of aquatic habitats, creating a complex foraging environment for breeding birds. We measured kittiwake reproductive success and foraging activities, while simultaneously measuring the abundance of surface schooling forage fishes throughout the foraging range of breeding kittiwakes. The abundance of primary prey species for kittiwakes (Pacific herring Clupea pallasi, Pacific sand lance Ammodytes hexapterus, and capelin Mallotus villosus) varied both annually and regionally, with no one region consistently having the greatest abundance of prey. Likewise, kittiwake reproductive success varied considerably among colonies and years. We found that bottom-up, top-down, timing mismatch, and colony-specific effects were all important to kittiwake productivity. Although bottom-up effects appeared to be strongest, they were not evident in some cases until other effects, such as geographic location (proximity of colony to prey concentrations) and top-down predation, were considered. Important bottom-up effects on kittiwake reproductive success were not only total prey abundance and distribution, but also species, age composition, and chronology of prey occurrence (match/mismatch of timing with critical brood-rearing periods); these effects varied by colony. Top-down effects of predation on kittiwake nest contents (independent of prey abundance) confounded seabird-forage fish relationships. Ultimately, when confounding factors were minimized, non-linear asymptotic relationships were identified between kittiwakes and their prey, with an asymptotic threshold of fish school surface area density of ca. 5 m2/km2, beyond which top-down, physiological, or phylogenetic constraints likely restrict further reproductive output. The integrated approach of our investigations provided a more thorough understanding of the mechanisms underlying predator-prey relationships in the complex marine environment. However, such mechanistic theories can only be tested and refined through long-term research and monitoring of much greater duration than the 5-year study reported herein. ?? 2006 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Progress in Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.pocean.2006.02.006","issn":"00796611","usgsCitation":"Suryan, R., Irons, D., Brown, E., Jodice, P., and Roby, D., 2006, Site-specific effects on productivity of an upper trophic-level marine predator: Bottom-up, top-down, and mismatch effects on reproduction in a colonial seabird: Progress in Oceanography, v. 68, no. 2-4, p. 303-328, https://doi.org/10.1016/j.pocean.2006.02.006.","startPage":"303","endPage":"328","numberOfPages":"26","costCenters":[],"links":[{"id":211448,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.pocean.2006.02.006"},{"id":238739,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b90fee4b08c986b31971a","contributors":{"authors":[{"text":"Suryan, R.M.","contributorId":52919,"corporation":false,"usgs":true,"family":"Suryan","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":429444,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Irons, D.B.","contributorId":52922,"corporation":false,"usgs":true,"family":"Irons","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":429445,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, E.D.","contributorId":12261,"corporation":false,"usgs":true,"family":"Brown","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":429443,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jodice, P.G.R.","contributorId":79846,"corporation":false,"usgs":true,"family":"Jodice","given":"P.G.R.","email":"","affiliations":[],"preferred":false,"id":429447,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Roby, D.D. 0000-0001-9844-0992","orcid":"https://orcid.org/0000-0001-9844-0992","contributorId":70944,"corporation":false,"usgs":true,"family":"Roby","given":"D.D.","affiliations":[],"preferred":false,"id":429446,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030921,"text":"70030921 - 2006 - Growth history of Kilauea inferred from volatile concentrations in submarine-collected basalts","interactions":[],"lastModifiedDate":"2019-03-25T11:26:25","indexId":"70030921","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Growth history of Kilauea inferred from volatile concentrations in submarine-collected basalts","docAbstract":"<div class=\"abstract svAbstract \" data-etype=\"ab\"><p id=\"\">Major-element and volatile (H<sub>2</sub>O, CO<sub>2</sub>, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its growth from pre-shield into tholeiite shield-stage. Pillow lavas of mildly alkalic basalt at 2600–1900 mbsl on the upper slope of the south flank are an intermediate link between deeper alkalic volcaniclastics and the modern tholeiite shield. Lava clast glasses from the west flank of Papau Seamount are subaerial Mauna Loa-like tholeiite and mark the contact between the two volcanoes. H<sub>2</sub>O and CO<sub>2&nbsp;</sub>in sandstone and breccia glasses from the Hilina bench, and in alkalic to tholeiitic pillow glasses above and to the east, were measured by FTIR. Volatile saturation pressures equal sampling depths (10 MPa&nbsp;=&nbsp;1000 m water) for south flank and Puna Ridge pillow lavas, suggesting recovery near eruption depths and/or vapor re-equilibration during down-slope flow. South flank glasses are divisible into low-pressure (CO<sub>2</sub>&nbsp;&lt;40 ppm, H<sub>2</sub>O&nbsp;&lt;&nbsp;0.5 wt.%, S&nbsp;&lt;500 ppm), moderate-pressure (CO<sub>2</sub>&nbsp;&lt;40 ppm, H<sub>2</sub>O&nbsp;&gt;0.5 wt.%, S 1000–1700 ppm), and high-pressure groups (CO<sub>2</sub>&nbsp;&gt;40 ppm, S &nbsp;∼1000 ppm), corresponding to eruption&nbsp;≥&nbsp;sea level, at moderate water depths (300–1000 m) or shallower but in disequilibrium, and in deep water (&gt;1000 m). Saturation pressures range widely in early alkalic to strongly alkalic breccia clast and sandstone glasses, establishing that early Kīlauea's vents spanned much of Mauna Loa's submarine flank, with some vents exceeding sea level. Later south flank alkalic pillow lavas expose a sizeable submarine edifice that grew concurrent with nearby subaerial alkalic eruptions. The onset of the tholeiitic shield stage is marked by extension of eruptions eastward and into deeper water (to 5500 m) during growth of the Puna Ridge. Subaerial and shallow water eruptions from earliest Kilauea show that it is underlain shallowly by Mauna Loa, implying that Mauna Loa is larger, and Kilauea smaller, than previously recognized.</p></div><h2 id=\"kwd_1\" class=\"svKeywords\">Keywords</h2>","language":"English","publisher":"Elsevier Science","doi":"10.1016/j.jvolgeores.2005.07.037","issn":"03770273","usgsCitation":"Coombs, M.L., Sisson, T.W., and Lipman, P.W., 2006, Growth history of Kilauea inferred from volatile concentrations in submarine-collected basalts: Journal of Volcanology and Geothermal Research, v. 151, no. 1-3, p. 19-49, https://doi.org/10.1016/j.jvolgeores.2005.07.037.","productDescription":"31 p.","startPage":"19","endPage":"49","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238531,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawai'i","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -154.3,\n              18.7\n            ],\n            [\n              -154.3,\n              20\n            ],\n            [\n              -155.5,\n              20\n            ],\n            [\n              -155.5,\n              18.7\n            ],\n            [\n              -154.3,\n              18.7\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"151","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2df2e4b0c8380cd5c183","contributors":{"authors":[{"text":"Coombs, Michelle L. 0000-0002-6002-6806 mcoombs@usgs.gov","orcid":"https://orcid.org/0000-0002-6002-6806","contributorId":2809,"corporation":false,"usgs":true,"family":"Coombs","given":"Michelle","email":"mcoombs@usgs.gov","middleInitial":"L.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":429239,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sisson, Thomas W. 0000-0003-3380-6425 tsisson@usgs.gov","orcid":"https://orcid.org/0000-0003-3380-6425","contributorId":2341,"corporation":false,"usgs":true,"family":"Sisson","given":"Thomas","email":"tsisson@usgs.gov","middleInitial":"W.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":429241,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lipman, Peter W. 0000-0001-9175-6118 plipman@usgs.gov","orcid":"https://orcid.org/0000-0001-9175-6118","contributorId":3486,"corporation":false,"usgs":true,"family":"Lipman","given":"Peter","email":"plipman@usgs.gov","middleInitial":"W.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"preferred":true,"id":429240,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030896,"text":"70030896 - 2006 - North Slope, Alaska: Source rock distribution, richness, thermal maturity, and petroleum charge","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70030896","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"North Slope, Alaska: Source rock distribution, richness, thermal maturity, and petroleum charge","docAbstract":"Four key marine petroleum source rock units were identified, characterized, and mapped in the subsurface to better understand the origin and distribution of petroleum on the North Slope of Alaska. These marine source rocks, from oldest to youngest, include four intervals: (1) Middle-Upper Triassic Shublik Formation, (2) basal condensed section in the Jurassic-Lower Cretaceous Kingak Shale, (3) Cretaceous pebble shale unit, and (4) Cretaceous Hue Shale. Well logs for more than 60 wells and total organic carbon (TOC) and Rock-Eval pyrolysis analyses for 1183 samples in 125 well penetrations of the source rocks were used to map the present-day thickness of each source rock and the quantity (TOC), quality (hydrogen index), and thermal maturity (Tmax) of the organic matter. Based on assumptions related to carbon mass balance and regional distributions of TOC, the present-day source rock quantity and quality maps were used to determine the extent of fractional conversion of the kerogen to petroleum and to map the original TOC (TOCo) and the original hydrogen index (HIo) prior to thermal maturation. The quantity and quality of oil-prone organic matter in Shublik Formation source rock generally exceeded that of the other units prior to thermal maturation (commonly TOCo > 4 wt.% and HIo > 600 mg hydrocarbon/g TOC), although all are likely sources for at least some petroleum on the North Slope. We used Rock-Eval and hydrous pyrolysis methods to calculate expulsion factors and petroleum charge for each of the four source rocks in the study area. Without attempting to identify the correct methods, we conclude that calculations based on Rock-Eval pyrolysis overestimate expulsion factors and petroleum charge because low pressure and rapid removal of thermally cracked products by the carrier gas retards cross-linking and pyrobitumen formation that is otherwise favored by natural burial maturation. Expulsion factors and petroleum charge based on hydrous pyrolysis may also be high compared to nature for a similar reason. Copyright ?? 2006. The American Association of Petroleum Geologists. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/09210505095","issn":"01491423","usgsCitation":"Peters, K.E., Magoon, L.B., Bird, K.J., Valin, Z., and Keller, M., 2006, North Slope, Alaska: Source rock distribution, richness, thermal maturity, and petroleum charge: American Association of Petroleum Geologists Bulletin, v. 90, no. 2, p. 261-292, https://doi.org/10.1306/09210505095.","startPage":"261","endPage":"292","numberOfPages":"32","costCenters":[],"links":[{"id":211360,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1306/09210505095"},{"id":238636,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6823e4b0c8380cd7361e","contributors":{"authors":[{"text":"Peters, K. E.","contributorId":17295,"corporation":false,"usgs":true,"family":"Peters","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":429125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Magoon, L. B.","contributorId":44531,"corporation":false,"usgs":true,"family":"Magoon","given":"L.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":429127,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bird, K. J.","contributorId":57824,"corporation":false,"usgs":false,"family":"Bird","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":429128,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Valin, Z. C. 0000-0001-6199-6700","orcid":"https://orcid.org/0000-0001-6199-6700","contributorId":75165,"corporation":false,"usgs":true,"family":"Valin","given":"Z. C.","affiliations":[],"preferred":false,"id":429129,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Keller, M.A.","contributorId":41008,"corporation":false,"usgs":true,"family":"Keller","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":429126,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030881,"text":"70030881 - 2006 - Increased energy expenditure by a seabird in response to higher food abundance","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030881","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"Increased energy expenditure by a seabird in response to higher food abundance","docAbstract":"Variability in forage fish abundance strongly affects seabird behavior and reproductive success, although details of this relationship are unclear. During 1997 and 1998, we measured (1) daily energy expenditure (DEE) of 80 parent black-legged kittiwakes Rissa tridactyla at 2 colonies in Prince William Sound, Alaska (North Icy Bay and Shoup Bay), (2) abundance of surface-schooling forage fishes within the foraging range of each colony, and (3) diet composition, energy delivery rates to nestlings, and reproductive success of kittiwakes at these same colonies. Female DEE was highest at North Icy Bay in 1998, while male DEE did not differ by colony year. Abundances of Pacific herring Clupea pallasi and sand lance Ammodytes hexapterus were highest near North Icy Bay in 1998 and nearly egual in density, although Age 1+ herring comprised the majority of the diet there. Energy delivery rates to nestlings, nestling growth rates, and productivity were also highest at North Icy Bay in 1998. We suggest that female kittiwakes responded to the increased abundance of Age 1+ herring near North Icy Bay in 1998 by increasing their DEE, which in turn positively affected reproductive success. Given that adult kittiwakes have been shown to suffer decreased survival as a response to increased energy expenditure during brood rearing, the positive correlation we observed between increased abundance of a high quality food source, parental effort, and productivity is consistent with maximizing lifetime reproductive success. The lack of a response in male DEE suggests that brood-rearing roles in kittiwakes differ between genders. ?? Inter-Research 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Ecology Progress Series","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"01718630","usgsCitation":"Jodice, P., Roby, D., Suryan, R., Irons, D., Turco, K., Brown, E., Thedinga, J., and Visser, G.H., 2006, Increased energy expenditure by a seabird in response to higher food abundance: Marine Ecology Progress Series, v. 306, p. 283-293.","startPage":"283","endPage":"293","numberOfPages":"11","costCenters":[],"links":[{"id":238961,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"306","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a39f8e4b0c8380cd61adb","contributors":{"authors":[{"text":"Jodice, P.G.R.","contributorId":79846,"corporation":false,"usgs":true,"family":"Jodice","given":"P.G.R.","email":"","affiliations":[],"preferred":false,"id":429069,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roby, D.D. 0000-0001-9844-0992","orcid":"https://orcid.org/0000-0001-9844-0992","contributorId":70944,"corporation":false,"usgs":true,"family":"Roby","given":"D.D.","affiliations":[],"preferred":false,"id":429068,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Suryan, R.M.","contributorId":52919,"corporation":false,"usgs":true,"family":"Suryan","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":429065,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Irons, D.B.","contributorId":52922,"corporation":false,"usgs":true,"family":"Irons","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":429066,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Turco, K.R.","contributorId":48742,"corporation":false,"usgs":true,"family":"Turco","given":"K.R.","email":"","affiliations":[],"preferred":false,"id":429064,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brown, E.D.","contributorId":12261,"corporation":false,"usgs":true,"family":"Brown","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":429063,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Thedinga, J.F.","contributorId":58838,"corporation":false,"usgs":true,"family":"Thedinga","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":429067,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Visser, G. Henk","contributorId":105497,"corporation":false,"usgs":false,"family":"Visser","given":"G.","email":"","middleInitial":"Henk","affiliations":[],"preferred":false,"id":429070,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70028948,"text":"70028948 - 2006 - An isotopic assessment of protein from diet and endogenous stores: Effects on egg production and incubation behaviour of geese","interactions":[],"lastModifiedDate":"2018-08-19T20:07:00","indexId":"70028948","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":900,"text":"Ardea","active":true,"publicationSubtype":{"id":10}},"title":"An isotopic assessment of protein from diet and endogenous stores: Effects on egg production and incubation behaviour of geese","docAbstract":"<p><span>Little empirical information exists to assess to what degree geese use a capital versus income breeding strategy for investing nutrients into eggs. We used stable isotope methods to directly estimate the sources of protein deposited into egg yolks of Brent </span><i>Branta bernicla</i><span> and Emperor Geese </span><i>Anser canagicus</i><span> on the Yukon-Kuskokwim Delta, Alaska, USA. Approximately 59 and 45% of protein in egg yolks of Brent and Emperor Geese, respectively, was derived from exogenous sources (i.e. food plants on the local breeding area). Within clutches of Brent Goose eggs, first-laid eggs exhibited slightly higher contributions from endogenous reserves than last-laid eggs. This pattern was less clear for Emperor Geese, which may have been a consequence of possibly analyzing eggs that were laid by intraspecific nest parasites rather than by hosts. For both these species, individuals exhibited large variability in the percent contribution of exogenous versus endogenous stores to eggs, and future studies should identify ecological factors related to this variation. Those Emperor Geese in poor body condition incubated their nests less constantly, and based on δ13C values, they fed on terrestrial foods while off their nests. Although not a pure capital breeder, Emperor Geese used nutrients garnered on spring staging areas to fuel virtually all their own maintenance during incubation and to contribute half or more of the nutrients in eggs. These results highlight the ecological importance of these spring staging habitats to geese.</span></p>","language":"English","publisher":"Netherlands Ornithologists' Union","issn":"03732266","usgsCitation":"Schmutz, J.A., Hobson, K., and Morse, J., 2006, An isotopic assessment of protein from diet and endogenous stores: Effects on egg production and incubation behaviour of geese: Ardea, v. 94, no. 3, p. 385-397.","productDescription":"13 p.","startPage":"385","endPage":"397","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":236454,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":334953,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://ardea.nou.nu/ardea_search3.php?key=nummer&keyin=94&k2=3"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon-Kuskokwim Delta","volume":"94","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea94e4b0c8380cd48962","contributors":{"authors":[{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","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":420680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hobson, K.A.","contributorId":23248,"corporation":false,"usgs":true,"family":"Hobson","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":420681,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morse, J.A.","contributorId":73771,"corporation":false,"usgs":true,"family":"Morse","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":420682,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028969,"text":"70028969 - 2006 - Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028969","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period","docAbstract":"King Eiders (Somateria spectabilis) breeding in western Canada and Alaska molt wing feathers and spend the winter in remote areas of the Bering Sea, precluding direct observation. To characterize timing of migration and habitat used by King Eiders during the nonbreeding period, we collected location data for 60 individuals (27 females and 33 males) over three years from satellite telemetry and utilized oceanographic information obtained by remote sensing. Male King Eiders dispersed from breeding areas, arrived at wing molt sites, and dispersed from wing molt sites earlier than females in all years. Males arriving earlier at wing molt sites molted flight feathers at higher latitudes. Distributions of molt and winter locations did not differ by sex or among years. Of the variables considered for analysis, distance to shore, water depth, and salinity appeared to best describe King Eider habitat throughout the nonbreeding period. King Eiders were located closer to shore, in shallower water with lower salinity than random locations. During the winter, lower ice concentrations were also associated with King Eider locations. This study provides some of the first large-scale descriptions of King Eider migration and habitat outside the breeding season. ?? The Cooper Ornithological Society 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Condor","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2","issn":"00105422","usgsCitation":"Phillips, L.M., Powell, A., and Rexstad, E., 2006, Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period: Condor, v. 108, no. 4, p. 887-900, https://doi.org/10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2.","startPage":"887","endPage":"900","numberOfPages":"14","costCenters":[],"links":[{"id":209807,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1650/0010-5422(2006)108[887:LMAHCO]2.0.CO;2"},{"id":236528,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a449ce4b0c8380cd66c52","contributors":{"authors":[{"text":"Phillips, Laura M.","contributorId":49497,"corporation":false,"usgs":false,"family":"Phillips","given":"Laura","email":"","middleInitial":"M.","affiliations":[{"id":7211,"text":"University of Alaska, Fairbanks","active":true,"usgs":false}],"preferred":false,"id":420781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, A.N.","contributorId":66194,"corporation":false,"usgs":true,"family":"Powell","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":420782,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rexstad, E.A.","contributorId":47063,"corporation":false,"usgs":true,"family":"Rexstad","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":420780,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030853,"text":"70030853 - 2006 - Murre eggs (<i>Uria aalge</i> and <i>Uria lomvia</i>) as indicators of mercury contamination in the Alaskan marine environment","interactions":[],"lastModifiedDate":"2018-08-19T21:54:01","indexId":"70030853","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Murre eggs (<i>Uria aalge</i> and <i>Uria lomvia</i>) as indicators of mercury contamination in the Alaskan marine environment","docAbstract":"<p><span>Sixty common murre (</span><i>Uria aalge</i><span>) and 27 thick-billed murre (</span><i>Uria lomvia</i><span>) eggs collected by the Seabird Tissue Archival and Monitoring Project (STAMP) in 1999−2001 from two Gulf of Alaska and three Bering Sea nesting colonies were analyzed for total mercury (Hg) using isotope dilution cold vapor inductively coupled mass spectrometry. Hg concentrations (wet mass) ranged from 0.011 μg/g to 0.357 μg/g (relative standard deviation = 76%), while conspecifics from the same colonies and years had an average relative standard deviation of 33%. Hg levels in eggs from the Gulf of Alaska (0.166 μg/g ± 0.011 μg/g) were significantly higher (</span><i>p</i><span> &lt; 0.0001) than in the Bering Sea (0.047 μg/g ± 0.004 μg/g). Within the Bering Sea, Hg was significantly higher (</span><i>p</i><span> = 0.0007) in eggs from Little Diomede Island near the arctic than at the two more southern colonies. Although thick-billed and common murres are ecologically similar, there were significant species differences in egg Hg concentrations within each region (</span><i>p</i><span> &lt; 0.0001). In the Bering Sea, eggs from thick-billed murres had higher Hg concentrations than eggs from common murres, while in the Gulf of Alaska, common murre eggs had higher concentrations than those of thick-billed murres. A separate one-way analysis of variance on the only time−trend data currently available for a colony (St. Lazaria Island in the Gulf of Alaska) found significantly lower Hg concentrations in common murre eggs collected in 2001 compared to 1999 (</span><i>p</i><span> = 0.017). Results from this study indicate that murre eggs may be effective monitoring units for detecting geographic, species, and temporal patterns of Hg contamination in marine food webs. The relatively small intracolony variation in egg Hg levels and the ability to consistently obtain adequate sample sizes both within and among colonies over a large geographic range means that monitoring efforts using murre eggs will have suitable statistical power for detecting environmental patterns of Hg contamination. The potential influences of trophic effects, physical transport patterns, and biogeochemical processes on these monitoring efforts are discussed, and future plans to investigate the sources of the observed variability are presented.</span></p>","language":"English","publisher":"ACS Publications","doi":"10.1021/es051064i","issn":"0013936X","usgsCitation":"Day, R.D., Vander Pol, S.S., Christopher, S.J., Davis, W., Pugh, R.S., Simac, K.S., Roseneau, D.G., and Becker, P., 2006, Murre eggs (<i>Uria aalge</i> and <i>Uria lomvia</i>) as indicators of mercury contamination in the Alaskan marine environment: Environmental Science & Technology, v. 40, no. 3, p. 659-665, https://doi.org/10.1021/es051064i.","productDescription":"7 p.","startPage":"659","endPage":"665","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238527,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"3","noUsgsAuthors":false,"publicationDate":"2005-12-22","publicationStatus":"PW","scienceBaseUri":"505a60d7e4b0c8380cd716e0","contributors":{"authors":[{"text":"Day, Russel D.","contributorId":89418,"corporation":false,"usgs":false,"family":"Day","given":"Russel","email":"","middleInitial":"D.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vander Pol, Stacy S.","contributorId":38776,"corporation":false,"usgs":false,"family":"Vander Pol","given":"Stacy","email":"","middleInitial":"S.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428947,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christopher, Steven J.","contributorId":85473,"corporation":false,"usgs":false,"family":"Christopher","given":"Steven","email":"","middleInitial":"J.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428949,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Davis, W.C.","contributorId":6339,"corporation":false,"usgs":true,"family":"Davis","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":428944,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pugh, Rebecca S.","contributorId":11826,"corporation":false,"usgs":false,"family":"Pugh","given":"Rebecca","email":"","middleInitial":"S.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428945,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Simac, Kristin S. 0000-0002-4072-1940 ksimac@usgs.gov","orcid":"https://orcid.org/0000-0002-4072-1940","contributorId":131096,"corporation":false,"usgs":true,"family":"Simac","given":"Kristin","email":"ksimac@usgs.gov","middleInitial":"S.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":428946,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Roseneau, David G.","contributorId":73394,"corporation":false,"usgs":false,"family":"Roseneau","given":"David","email":"","middleInitial":"G.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":428948,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Becker, P.R.","contributorId":101035,"corporation":false,"usgs":true,"family":"Becker","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":428951,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70030837,"text":"70030837 - 2006 - Minding the gap: Frequency of indels in mtDNA control region sequence data and influence on population genetic analyses","interactions":[],"lastModifiedDate":"2018-07-14T14:24:02","indexId":"70030837","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2774,"text":"Molecular Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Minding the gap: Frequency of indels in mtDNA control region sequence data and influence on population genetic analyses","docAbstract":"<p>Insertions and deletions (indels) result in sequences of various lengths when homologous gene regions are compared among individuals or species. Although indels are typically phylogenetically informative, occurrence and incorporation of these characters as gaps in intraspecific population genetic data sets are rarely discussed. Moreover, the impact of gaps on estimates of fixation indices, such as FST, has not been reviewed. Here, I summarize the occurrence and population genetic signal of indels among 60 published studies that involved alignments of multiple sequences from the mitochondrial DNA (mtDNA) control region of vertebrate taxa. Among 30 studies observing indels, an average of 12% of both variable and parsimony-informative sites were composed of these sites. There was no consistent trend between levels of population differentiation and the number of gap characters in a data block. Across all studies, the average influence on estimates of ??ST was small, explaining only an additional 1.8% of among population variance (range 0.0-8.0%). Studies most likely to observe an increase in ??ST with the inclusion of gap characters were those with &lt; 20 variable sites, but a near equal number of studies with few variable sites did not show an increase. In contrast to studies at interspecific levels, the influence of indels for intraspecific population genetic analyses of control region DNA appears small, dependent upon total number of variable sites in the data block, and related to species-specific characteristics and the spatial distribution of mtDNA lineages that contain indels. ?? 2006 Blackwell Publishing Ltd.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-294X.2005.02781.x","issn":"09621083","usgsCitation":"Pearce, J.M., 2006, Minding the gap: Frequency of indels in mtDNA control region sequence data and influence on population genetic analyses: Molecular Ecology, v. 15, no. 2, p. 333-341, https://doi.org/10.1111/j.1365-294X.2005.02781.x.","productDescription":"9 p.","startPage":"333","endPage":"341","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238796,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211500,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-294X.2005.02781.x"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2005-12-12","publicationStatus":"PW","scienceBaseUri":"505a5735e4b0c8380cd6db26","contributors":{"authors":[{"text":"Pearce, John M. 0000-0002-8503-5485 jpearce@usgs.gov","orcid":"https://orcid.org/0000-0002-8503-5485","contributorId":181766,"corporation":false,"usgs":true,"family":"Pearce","given":"John","email":"jpearce@usgs.gov","middleInitial":"M.","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":428893,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030827,"text":"70030827 - 2006 - Storage and interaction of compositionally heterogeneous magmas from the 1986 eruption of Augustine Volcano, Alaska","interactions":[],"lastModifiedDate":"2016-12-21T22:05:36","indexId":"70030827","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"Storage and interaction of compositionally heterogeneous magmas from the 1986 eruption of Augustine Volcano, Alaska","docAbstract":"<p><span>Compositional heterogeneity (56–64&nbsp;wt% SiO</span><sub><span>2</span></sub><span>&nbsp;whole-rock) in samples of tephra and lava from the 1986 eruption of Augustine Volcano, Alaska, raises questions about the physical nature of magma storage and interaction beneath this young and frequently active volcano. To determine conditions of magma storage and evolutionary histories of compositionally distinct magmas, we investigate physical and chemical characteristics of andesitic and dacitic magmas feeding the 1986 eruption. We calculate equilibrium temperatures and oxygen fugacities from Fe-Ti oxide compositions and find a continuous range in temperature from 877 to 947°C and high oxygen fugacities (ΔNNO=1–2) for all magmas. Melt inclusions in pyroxene phenocrysts analyzed by Fourier-transform infrared spectroscopy and electron probe microanalysis are dacitic to rhyolitic and have water contents ranging from &lt;1 to ∼7&nbsp;wt%. Matrix glass compositions are rhyolitic and remarkably similar (∼75.9–76.6&nbsp;wt% SiO</span><sub><span>2</span></sub><span>) in all samples. All samples have ∼25% phenocrysts, but lower-silica samples have much higher microlite contents than higher-silica samples. Continuous ranges in temperature and whole-rock composition, as well as linear trends in Harker diagrams and disequilibrium mineral textures, indicate that the 1986 magmas are the product of mixing between dacitic magma and a hotter, more mafic magma. The dacitic endmember is probably residual magma from the previous (1976) eruption of Augustine, and we interpret the mafic endmember to have been intruded from depth. Mixing appears to have continued as magmas ascended towards the vent. We suggest that the physical structure of the magma storage system beneath Augustine contributed to the sustained compositional heterogeneity of this eruption, which is best explained by magma storage and interaction in a vertically extensive system of interconnected dikes rather than a single coherent magma chamber and/or conduit. The typically short repose period (∼10 years) between Augustine's recent eruptive pulses may also inhibit homogenization, as short repose periods and chemically heterogeneous magmas are observed at several volcanoes in the Cook Inlet region of Alaska.</span></p>","language":"English","publisher":"Springer International","doi":"10.1007/s00445-005-0003-z","issn":"02588900","usgsCitation":"Roman, D.C., Cashman, K., Gardner, C.A., Wallace, P., and Donovan, J., 2006, Storage and interaction of compositionally heterogeneous magmas from the 1986 eruption of Augustine Volcano, Alaska: Bulletin of Volcanology, v. 68, no. 3, p. 240-254, https://doi.org/10.1007/s00445-005-0003-z.","productDescription":"15 p.","startPage":"240","endPage":"254","numberOfPages":"15","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238632,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Augustine Volcano","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -153.51470947265625, 59.412945785071 ], [ -153.47625732421875, 59.41993301322722 ], [ -153.446044921875, 59.428315784042574 ], [ -153.39385986328125, 59.428315784042574 ], [ -153.36090087890622, 59.41574084934491 ], [ -153.34442138671875, 59.39477224351409 ], [ -153.31695556640625, 59.37658895163648 ], [ -153.32794189453125, 59.33599107056162 ], [ -153.37188720703125, 59.32338185310805 ], [ -153.446044921875, 59.31777625443006 ], [ -153.5394287109375, 59.31076795603884 ], [ -153.577880859375, 59.32618430580267 ], [ -153.577880859375, 59.35139598294652 ], [ -153.60260009765625, 59.379387015928536 ], [ -153.59161376953125, 59.404559208021745 ], [ -153.55865478515625, 59.410150490100754 ], [ -153.51470947265625, 59.412945785071 ] ] ] } } ] }","volume":"68","issue":"3","noUsgsAuthors":false,"publicationDate":"2005-10-26","publicationStatus":"PW","scienceBaseUri":"505b986ae4b08c986b31c009","contributors":{"authors":[{"text":"Roman, Diana C.","contributorId":176225,"corporation":false,"usgs":false,"family":"Roman","given":"Diana","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":428856,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cashman, Katharine V.","contributorId":40097,"corporation":false,"usgs":false,"family":"Cashman","given":"Katharine V.","affiliations":[],"preferred":false,"id":428855,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gardner, Cynthia A. 0000-0002-6214-6182 cgardner@usgs.gov","orcid":"https://orcid.org/0000-0002-6214-6182","contributorId":1959,"corporation":false,"usgs":true,"family":"Gardner","given":"Cynthia","email":"cgardner@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":428857,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wallace, Paul J.","contributorId":29308,"corporation":false,"usgs":true,"family":"Wallace","given":"Paul J.","affiliations":[],"preferred":false,"id":428854,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Donovan, John J.","contributorId":86091,"corporation":false,"usgs":true,"family":"Donovan","given":"John J.","affiliations":[],"preferred":false,"id":428858,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030810,"text":"70030810 - 2006 - Breeding and moulting locations and migration patterns of the Atlantic population of Steller's eiders Polysticta stelleri as determined from satellite telemetry","interactions":[],"lastModifiedDate":"2018-07-15T11:08:43","indexId":"70030810","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2190,"text":"Journal of Avian Biology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Breeding and moulting locations and migration patterns of the Atlantic population of Steller's eiders <i>Polysticta stelleri</i> as determined from satellite telemetry","title":"Breeding and moulting locations and migration patterns of the Atlantic population of Steller's eiders Polysticta stelleri as determined from satellite telemetry","docAbstract":"<p>This study was designed to determine the spring, summer, autumn, and early winter distribution, migration routes, and timing of migration of the Atlantic population of Steller's eiders Polysticta stelleri. Satellite transmitters were implanted in 20 eiders captured in April 2001 at Vads??, Norway, and their locations were determined from 5 May 2001 to 6 February 2002. Regions where birds concentrated from spring until returning to wintering areas included coastal waters from western Finnmark, Norway, to the eastern Taymyr Peninsula, Russia. Novaya Zemlya, Russia, particularly the Mollera Bay region, was used extensively during spring staging, moult, and autumn staging; regions of the Kola, Kanin, and Gydanskiy peninsulas, Russia, were used extensively during spring and moult migrations. Steller's eiders migrated across the Barents and Kara seas and along the Kara Sea and Kola Peninsula coastal waters to nesting, moulting, and wintering areas. The majority of marked eiders (9 of 15) were flightless in near-shore waters along the west side of Novaya Zemlya. Eiders were also flightless in northern Norway and along the Kanin and at Kola Peninsula coasts. We compare and contrast natural history characteristics of the Atlantic and Pacific populations and discuss evolutionary and ecological factors influencing their distribution. &amp;copy; Journal of Avian Biology.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.0908-8857.2006.03472.x","usgsCitation":"Petersen, M.R., Bustnes, J., and Systad, G.H., 2006, Breeding and moulting locations and migration patterns of the Atlantic population of Steller's eiders Polysticta stelleri as determined from satellite telemetry: Journal of Avian Biology, v. 37, no. 1, p. 58-68, https://doi.org/10.1111/j.0908-8857.2006.03472.x.","productDescription":"11 p.","startPage":"58","endPage":"68","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238893,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-06-28","publicationStatus":"PW","scienceBaseUri":"5059f258e4b0c8380cd4b120","contributors":{"authors":[{"text":"Petersen, Margaret R. 0000-0001-6082-3189 mrpetersen@usgs.gov","orcid":"https://orcid.org/0000-0001-6082-3189","contributorId":167729,"corporation":false,"usgs":true,"family":"Petersen","given":"Margaret","email":"mrpetersen@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":428784,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bustnes, Jan O.","contributorId":43235,"corporation":false,"usgs":false,"family":"Bustnes","given":"Jan O.","affiliations":[],"preferred":false,"id":428783,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Systad, Geir H.","contributorId":24241,"corporation":false,"usgs":false,"family":"Systad","given":"Geir","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":428782,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030775,"text":"70030775 - 2006 - Factors affecting distribution of wood, detritus, and sediment in headwater streams draining managed young-growth red alder - Conifer forests in southeast Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:21:18","indexId":"70030775","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1170,"text":"Canadian Journal of Forest Research","active":true,"publicationSubtype":{"id":10}},"title":"Factors affecting distribution of wood, detritus, and sediment in headwater streams draining managed young-growth red alder - Conifer forests in southeast Alaska","docAbstract":"Factors (riparian stand condition, management regimes, and channel properties) affecting distributions of wood, detritus (leaves and branches), and sediment were examined in headwater streams draining young-growth red alder (Alnus rubra Bong.) - conifer riparian forests (<40 years old) in southeast Alaska. More riparian red alder were found along streams affected by both timber harvesting and mass movement than in streams affected by timber harvesting alone. Young-growth stands produced little large wood material (diameter ???10 cm) and had little effect on altering the size distribution of functional large wood in channels, although more alder wood pieces were found in streams with greater numbers of riparian alder trees. Legacy wood pieces (>40 years old) remained in channels and provided sites for sediment and organic matter storage. Despite various alder-conifer mixtures and past harvesting effects, the abundance of large wood, fine wood, and detritus accumulations significantly decreased with increasing channel bank-full width (0.5-3.5 m) along relatively short channel distances (up to 700 m). Changes in wood, detritus, and sediment accumulations together with changes in riparian stand characteristics create spatial and temporal variability of in-channel conditions in headwater systems. A component of alder within young-growth riparian forests may benefit both wood production and biological recovery in disturbed headwater stream channels. ?? 2006 NRC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Forest Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/x05-272","issn":"00455067","usgsCitation":"Gomi, T., Johnson, A., Deal, R., Hennon, P., Orlikowska, E., and Wipfli, M., 2006, Factors affecting distribution of wood, detritus, and sediment in headwater streams draining managed young-growth red alder - Conifer forests in southeast Alaska: Canadian Journal of Forest Research, v. 36, no. 3, p. 725-737, https://doi.org/10.1139/x05-272.","startPage":"725","endPage":"737","numberOfPages":"13","costCenters":[],"links":[{"id":211553,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/x05-272"},{"id":238857,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e9fe4b0c8380cd53541","contributors":{"authors":[{"text":"Gomi, T.","contributorId":29632,"corporation":false,"usgs":true,"family":"Gomi","given":"T.","email":"","affiliations":[],"preferred":false,"id":428609,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, A.C.","contributorId":16651,"corporation":false,"usgs":true,"family":"Johnson","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":428608,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Deal, R.L.","contributorId":51501,"corporation":false,"usgs":true,"family":"Deal","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":428612,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hennon, P.E.","contributorId":37951,"corporation":false,"usgs":true,"family":"Hennon","given":"P.E.","email":"","affiliations":[],"preferred":false,"id":428610,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Orlikowska, E.H.","contributorId":42021,"corporation":false,"usgs":true,"family":"Orlikowska","given":"E.H.","email":"","affiliations":[],"preferred":false,"id":428611,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wipfli, M.S.","contributorId":51963,"corporation":false,"usgs":true,"family":"Wipfli","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":428613,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030769,"text":"70030769 - 2006 - On the absence of InSAR-detected volcano deformation spanning the 1995-1996 and 1999 eruptions of Shishaldin Volcano, Alaska","interactions":[],"lastModifiedDate":"2019-04-15T09:41:49","indexId":"70030769","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"On the absence of InSAR-detected volcano deformation spanning the 1995-1996 and 1999 eruptions of Shishaldin Volcano, Alaska","docAbstract":"<div class=\"abstract svAbstract \" data-etype=\"ab\"><p id=\"\">Shishaldin Volcano, a large, frequently active basaltic-andesite volcano located on Unimak Island in the Aleutian Arc of Alaska, had a minor eruption in 1995–1996 and a VEI 3 sub-Plinian basaltic eruption in 1999. We used 21 synthetic aperture radar images acquired by ERS-1, ERS-2, JERS-1, and RADARSAT-1 satellites to construct 12 coherent interferograms that span most of the 1993–2003 time interval. All interferograms lack coherence within ∼5 km of the summit, primarily due to persistent snow and ice cover on the edifice. Remarkably, in the 5–15 km distance range where interferograms are coherent, the InSAR images show no intrusion- or withdrawal-related deformation at Shishaldin during this entire time period. However, several InSAR images do show deformation associated with a shallow M<sub>L</sub> 5.2 earthquake located ∼14 km west of Shishaldin that occurred 6 weeks before the 1999 eruption. We use a theoretical model to predict deformation magnitudes due to a volumetric expansion source having a volume equivalent to the 1999 erupted volume, and find that deformation magnitudes for sources shallower than 10 km are within the expected detection capabilities for interferograms generated from C-band ERS 1/2 and RADARSAT-1 synthetic aperture radar images. We also find that InSAR images cannot resolve relatively shallow deformation sources (1–2 km below sea level) due to spatial gaps in the InSAR images caused by lost coherence. The lack of any deformation, particularly for the 1999 eruption, leads us to speculate that magma feeding eruptions at the summit moves rapidly (at least 80m/day) from &gt;&nbsp;10 km depth, and that the intrusion–eruption cycle at Shishaldin does not produce significant permanent deformation at the surface.</p></div>","language":"English","publisher":"Elsevier Science","doi":"10.1016/j.jvolgeores.2005.07.013","issn":"03770273","usgsCitation":"Moran, S., Kwoun, O., Masterlark, T., and Lu, Z., 2006, On the absence of InSAR-detected volcano deformation spanning the 1995-1996 and 1999 eruptions of Shishaldin Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 150, no. 1-3, p. 119-131, https://doi.org/10.1016/j.jvolgeores.2005.07.013.","productDescription":"13 p.","startPage":"119","endPage":"131","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238760,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Shishaldin Volcano","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -164.91577148437497,\n              54.35815677227375\n            ],\n            [\n              -164.91577148437497,\n              55.09723033442451\n            ],\n            [\n              -163.35571289062497,\n              55.09723033442451\n            ],\n            [\n              -163.35571289062497,\n              54.35815677227375\n            ],\n            [\n              -164.91577148437497,\n              54.35815677227375\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"150","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6db3e4b0c8380cd7529c","contributors":{"authors":[{"text":"Moran, S.C. 0000-0001-7308-9649","orcid":"https://orcid.org/0000-0001-7308-9649","contributorId":78896,"corporation":false,"usgs":true,"family":"Moran","given":"S.C.","affiliations":[],"preferred":false,"id":428586,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kwoun, O.","contributorId":84147,"corporation":false,"usgs":true,"family":"Kwoun","given":"O.","email":"","affiliations":[],"preferred":false,"id":428587,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Masterlark, Timothy","contributorId":92829,"corporation":false,"usgs":false,"family":"Masterlark","given":"Timothy","email":"","affiliations":[{"id":35607,"text":"South Dakota School of Mines","active":true,"usgs":false}],"preferred":false,"id":428588,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lu, Z.","contributorId":106241,"corporation":false,"usgs":true,"family":"Lu","given":"Z.","affiliations":[],"preferred":false,"id":428589,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030752,"text":"70030752 - 2006 - Thickness distribution of a cooling pyroclastic flow deposit on Augustine Volcano, Alaska: Optimization using InSAR, FEMs, and an adaptive mesh algorithm","interactions":[],"lastModifiedDate":"2019-04-08T11:25:13","indexId":"70030752","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Thickness distribution of a cooling pyroclastic flow deposit on Augustine Volcano, Alaska: Optimization using InSAR, FEMs, and an adaptive mesh algorithm","docAbstract":"<p><span>Interferometric synthetic aperture radar (InSAR) imagery documents the consistent subsidence, during the interval 1992–1999, of a pyroclastic flow deposit (PFD) emplaced during the 1986 eruption of Augustine Volcano, Alaska. We construct finite element models (FEMs) that simulate thermoelastic contraction of the PFD to account for the observed subsidence. Three-dimensional problem domains of the FEMs include a thermoelastic PFD embedded in an elastic substrate. The thickness of the PFD is initially determined from the difference between post- and pre-eruption digital elevation models (DEMs). The initial excess temperature of the PFD at the time of deposition, 640 °C, is estimated from FEM predictions and an InSAR image via standard least-squares inverse methods. Although the FEM predicts the major features of the observed transient deformation, systematic prediction errors (RMSE&nbsp;=&nbsp;2.2 cm) are most likely associated with errors in the a priori PFD thickness distribution estimated from the DEM differences. We combine an InSAR image, FEMs, and an adaptive mesh algorithm to iteratively optimize the geometry of the PFD with respect to a minimized misfit between the predicted thermoelastic deformation and observed deformation. Prediction errors from an FEM, which includes an optimized PFD geometry and the initial excess PFD temperature estimated from the least-squares analysis, are sub-millimeter (RMSE&nbsp;=&nbsp;0.3 mm). The average thickness (9.3 m), maximum thickness (126 m), and volume (2.1&nbsp;×&nbsp;10</span><sup>7</sup><span>m</span><sup>3</sup><span>) of the PFD, estimated using the adaptive mesh algorithm, are about twice as large as the respective estimations for the a priori PFD geometry. Sensitivity analyses suggest unrealistic PFD thickness distributions are required for initial excess PFD temperatures outside of the range 500–800 °C.</span></p>","language":"English","publisher":"Elsevier Science","doi":"10.1016/j.jvolgeores.2005.07.004","issn":"03770273","usgsCitation":"Masterlark, T., Lu, Z., and Rykhus, R.P., 2006, Thickness distribution of a cooling pyroclastic flow deposit on Augustine Volcano, Alaska: Optimization using InSAR, FEMs, and an adaptive mesh algorithm: Journal of Volcanology and Geothermal Research, v. 150, no. 1-3, p. 186-201, https://doi.org/10.1016/j.jvolgeores.2005.07.004.","productDescription":"16 p.","startPage":"186","endPage":"201","numberOfPages":"16","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238990,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Augustine Volcano","geographicExtents":"\n{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -153.51470947265625, 59.412945785071 ], [ -153.47625732421875, 59.41993301322722 ], [ -153.446044921875, 59.428315784042574 ], [ -153.39385986328125, 59.428315784042574 ], [ -153.36090087890622, 59.41574084934491 ], [ -153.34442138671875, 59.39477224351409 ], [ -153.31695556640625, 59.37658895163648 ], [ -153.32794189453125, 59.33599107056162 ], [ -153.37188720703125, 59.32338185310805 ], [ -153.446044921875, 59.31777625443006 ], [ -153.5394287109375, 59.31076795603884 ], [ -153.577880859375, 59.32618430580267 ], [ -153.577880859375, 59.35139598294652 ], [ -153.60260009765625, 59.379387015928536 ], [ -153.59161376953125, 59.404559208021745 ], [ -153.55865478515625, 59.410150490100754 ], [ -153.51470947265625, 59.412945785071 ] ] ] } } ] }\n","volume":"150","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb29ce4b08c986b3258f6","contributors":{"authors":[{"text":"Masterlark, Timothy","contributorId":92829,"corporation":false,"usgs":false,"family":"Masterlark","given":"Timothy","email":"","affiliations":[{"id":35607,"text":"South Dakota School of Mines","active":true,"usgs":false}],"preferred":false,"id":428523,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, Zhong 0000-0001-9181-1818 lu@usgs.gov","orcid":"https://orcid.org/0000-0001-9181-1818","contributorId":901,"corporation":false,"usgs":true,"family":"Lu","given":"Zhong","email":"lu@usgs.gov","affiliations":[],"preferred":true,"id":428524,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rykhus, Russell P.","contributorId":27337,"corporation":false,"usgs":true,"family":"Rykhus","given":"Russell","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":428522,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030746,"text":"70030746 - 2006 - Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow","interactions":[],"lastModifiedDate":"2018-08-20T18:17:47","indexId":"70030746","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Genetic structure of eelgrass <i>Zostera marina</i> meadows in an embayment with restricted water flow","title":"Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow","docAbstract":"<p>Genetic structure of the seagrass <i>Zostera marina</i> in a coastal lagoon with restricted water flow, and with heterogeneous water residence times and oceanographic characteristics, was assessed using 8 polymorphic microsatellite loci. Analyses of genetic differentiation (θ) and Bayesian clustering suggested that the <i>Z. marina</i> population in San Quintin Bay (SQB) is genetically substructured, with at least 4 genetically different groups: (1) West Head, (2) Mouth, (3) East Arm, and (4) East Head. The greatest θ value was observed between the most distant sites (θ = 0.095). The lowest values were found among sites closest to the mouth of the coastal lagoon (θ = 0.000 to 0.009). The maximum likelihood approach showed that the sites at the mouth have a mixed pattern of gene flow without a unidirectional pattern. In contrast, there was a clear pattern of asymmetrical gene flow from the mouth towards the West Head. These results suggested that the restriction of water flow at the heads, current pattern, and the distance between sites can reduce genetic flow and promote genetic differences within <i>Z. marina</i> meadows in small water embayments such as SQB. Though the population is genetically substructured and a 14% decline in cover has been detected, this study did not show evidence of a recent genetic bottleneck. In contrast, mouth sites have experienced a recent expansion in their population size, and also perhaps a recent influx of rare alleles from genetically distinct immigrants </p>","language":"English","publisher":"Inter-Research","doi":"10.3354/meps309107","usgsCitation":"Muniz-Salazar, R., Talbot, S.L., Sage, G.K., Ward, D.H., and Cabello-Pasini, A., 2006, Genetic structure of eelgrass Zostera marina meadows in an embayment with restricted water flow: Marine Ecology Progress Series, v. 309, p. 107-116, https://doi.org/10.3354/meps309107.","productDescription":"10 p.","startPage":"107","endPage":"116","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":477507,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps309107","text":"Publisher Index Page"},{"id":238888,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"309","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1586e4b0c8380cd54e61","contributors":{"authors":[{"text":"Muniz-Salazar, Raquel","contributorId":194242,"corporation":false,"usgs":false,"family":"Muniz-Salazar","given":"Raquel","email":"","affiliations":[],"preferred":false,"id":428498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@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":428496,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sage, George K. 0000-0003-1431-2286 ksage@usgs.gov","orcid":"https://orcid.org/0000-0003-1431-2286","contributorId":87833,"corporation":false,"usgs":true,"family":"Sage","given":"George","email":"ksage@usgs.gov","middleInitial":"K.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":false,"id":428495,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ward, David H. 0000-0002-5242-2526 dward@usgs.gov","orcid":"https://orcid.org/0000-0002-5242-2526","contributorId":3247,"corporation":false,"usgs":true,"family":"Ward","given":"David","email":"dward@usgs.gov","middleInitial":"H.","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":428497,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cabello-Pasini, Alejandro","contributorId":80636,"corporation":false,"usgs":true,"family":"Cabello-Pasini","given":"Alejandro","affiliations":[],"preferred":false,"id":428499,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030741,"text":"70030741 - 2006 - Predator functional response and prey survival: Direct and indirect interactions affecting a marked prey population","interactions":[],"lastModifiedDate":"2016-06-07T11:14:52","indexId":"70030741","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2158,"text":"Journal of Animal Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Predator functional response and prey survival: Direct and indirect interactions affecting a marked prey population","docAbstract":"<p>1. Predation plays an integral role in many community interactions, with the number of predators and the rate at which they consume prey (i.e. their functional response) determining interaction strengths. Owing to the difficulty of directly observing predation events, attempts to determine the functional response of predators in natural systems are limited. Determining the forms that predator functional responses take in complex systems is important in advancing understanding of community interactions. 2. Prey survival has a direct relationship to the functional response of their predators. We employed this relationship to estimate the functional response for bald eagle Haliaeetus leucocepalus predation of Canada goose Branta canadensis nests. We compared models that incorporated eagle abundance, nest abundance and alternative prey presence to determine the form of the functional response that best predicted intra-annual variation in survival of goose nests. 3. Eagle abundance, nest abundance and the availability of alternative prey were all related to predation rates of goose nests by eagles. There was a sigmoidal relationship between predation rate and prey abundance and prey switching occurred when alternative prey was present. In addition, predation by individual eagles increased as eagle abundance increased. 4. A complex set of interactions among the three species examined in this study determined survival rates of goose nests. Results show that eagle predation had both prey- and predator-dependent components with no support for ratio dependence. In addition, indirect interactions resulting from the availability of alternative prey had an important role in mediating the rate at which eagles depredated nests. As a result, much of the within-season variation in nest survival was due to changing availability of alternative prey consumed by eagles. 5. Empirical relationships drawn from ecological theory can be directly integrated into the estimation process to determine the mechanisms responsible for variation in observed survival rates. The relationship between predator functional response and prey survival offers a flexible and robust method to advance our understanding of predator-prey interactions in many complex natural systems where prey populations are marked and regularly visited. ?? 2006 British Ecological Society.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Animal Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-2656.2005.01025.x","issn":"00218790","usgsCitation":"Miller, D.A., Grand, J., Fondell, T., and Anthony, M., 2006, Predator functional response and prey survival: Direct and indirect interactions affecting a marked prey population: Journal of Animal Ecology, v. 75, no. 1, p. 101-110, https://doi.org/10.1111/j.1365-2656.2005.01025.x.","productDescription":"10 p.","startPage":"101","endPage":"110","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":477391,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-2656.2005.01025.x","text":"Publisher Index Page"},{"id":238822,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211522,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2656.2005.01025.x"}],"volume":"75","issue":"1","noUsgsAuthors":false,"publicationDate":"2005-12-20","publicationStatus":"PW","scienceBaseUri":"505a816ee4b0c8380cd7b51f","contributors":{"authors":[{"text":"Miller, David A.","contributorId":29193,"corporation":false,"usgs":false,"family":"Miller","given":"David","email":"","middleInitial":"A.","affiliations":[{"id":6911,"text":"Iowa State University","active":true,"usgs":false}],"preferred":false,"id":428473,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grand, J.B.","contributorId":11150,"corporation":false,"usgs":true,"family":"Grand","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":428471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fondell, T.F.","contributorId":11154,"corporation":false,"usgs":true,"family":"Fondell","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":428472,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anthony, M.","contributorId":41373,"corporation":false,"usgs":true,"family":"Anthony","given":"M.","email":"","affiliations":[],"preferred":false,"id":428474,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030687,"text":"70030687 - 2006 - Demography, genetics, and the value of mixed messages","interactions":[],"lastModifiedDate":"2018-07-14T14:22:11","indexId":"70030687","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Demography, genetics, and the value of mixed messages","docAbstract":"<p><a class=\"ref\">Iverson et al. (2004)</a><span>&nbsp;used estimates of the homing rate for molting adult Harlequin Ducks (</span><i>Histrionicus histrionicus</i><span>) in Alaska to draw inferences about population structure. Homing rates, defined as one minus the ratio of birds recaptured elsewhere to those recaptured at the original banding site, were high (0.95&ndash;1.00) for males and females.&nbsp;</span><a class=\"ref\">Iverson et al. (2004)</a><span>&nbsp;concluded that these high rates of homing are indicative of demographic independence among molting groups separated by small distances (tens to hundreds of kilometers) and that conservation efforts should recognize this fine-scale population structure. We re-examined their use of the homing rate, because their assumption of equal detection probability across a wide sampling area could have led to an upward bias in their estimates of site fidelity. As a result, we are hesitant to agree with their conclusion of high adult homing to molting areas and that molt-site fidelity is evidence for demographic independence. Our hesitancy stems from the fact that little is known about juvenile and adult movements within and among years, breeding area origins, and the variation of demographic parameters (e.g., survival and productivity) among molting groups. Furthermore, population genetic data of these molting groups suggest gene flow at both nuclear and mitochondrial loci. Such mixed messages between demographic (i.e., banding) and genetic data are increasingly common in ornithological studies and offer unique opportunities to reassess predictions and make more robust inferences about population structure across broad temporal and spatial scales. Thus, we stress that it is this broader scale perspective, which combines both demography and genetics, that biologists should seek to quantify and conservation efforts should seek to recognize.</span></p>","language":"English","publisher":"Cooper Ornithological Society","doi":"10.1650/0010-5422(2006)108[474:DGATVO]2.0.CO;2","issn":"00105422","usgsCitation":"Pearce, J.M., and Talbot, S.L., 2006, Demography, genetics, and the value of mixed messages: Condor, v. 108, no. 2, p. 474-479, https://doi.org/10.1650/0010-5422(2006)108[474:DGATVO]2.0.CO;2.","productDescription":"6 p.","startPage":"474","endPage":"479","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":487589,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1650/0010-5422(2006)108[474:dgatvo]2.0.co;2","text":"Publisher Index Page"},{"id":239603,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212162,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1650/0010-5422(2006)108[474:DGATVO]2.0.CO;2"}],"volume":"108","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe8ee4b0c8380cd4edb2","contributors":{"authors":[{"text":"Pearce, John M. 0000-0002-8503-5485 jpearce@usgs.gov","orcid":"https://orcid.org/0000-0002-8503-5485","contributorId":181766,"corporation":false,"usgs":true,"family":"Pearce","given":"John","email":"jpearce@usgs.gov","middleInitial":"M.","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":428226,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@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":428225,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}