Correlates of survival in Swainson's hawks breeding in northern California
Identifieur interne : 000A50 ( Istex/Corpus ); précédent : 000A49; suivant : 000A51Correlates of survival in Swainson's hawks breeding in northern California
Auteurs : Christopher W. Briggs ; Brian Woodbridge ; Michael W. CollopySource :
- The Journal of Wildlife Management [ 0022-541X ] ; 2011-08.
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- KwdEn :
Abstract
We used a 30‐year study of breeding Swainson's hawks (Buteo swainsoni) in northern California to examine correlates of adult apparent survival using multistate models in Program MARK. Specifically, we examined age‐related patterns in adult apparent survival and how adult survival was correlated with average annual nest productivity, annual reproductive output, western juniper (Juniperus occidentalis) density around nest sites, distance to agriculture, and amount of agriculture within a territory. Annual estimates of adult survival varied from 0.85 to 0.9 (SE = 0.02). There were no indications of senescence or other patterns of age‐related changes in adult apparent survival. Adult survival was inversely correlated with average reproductive output, with individuals producing >2 offspring having decreased survival, reflecting a possible trade‐off between reproduction and survival. Conversely, reproduction in any year was positively correlated with survival, providing evidence of individual quality influencing adult survival. The distance an individual had to travel to agriculture, where most individuals forage, was negatively related to survival. Primary productivity within the average Swainson's hawk territory was positively correlated with adult survival. Our results indicate that individuals may have higher survival and fitness in areas with high proportions of irrigated agriculture that provides high prey densities, particularly alfalfa. © 2011 The Wildlife Society.
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DOI: 10.1002/jwmg.167
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Specifically, we examined age‐related patterns in adult apparent survival and how adult survival was correlated with average annual nest productivity, annual reproductive output, western juniper (Juniperus occidentalis) density around nest sites, distance to agriculture, and amount of agriculture within a territory. Annual estimates of adult survival varied from 0.85 to 0.9 (SE = 0.02). There were no indications of senescence or other patterns of age‐related changes in adult apparent survival. Adult survival was inversely correlated with average reproductive output, with individuals producing >2 offspring having decreased survival, reflecting a possible trade‐off between reproduction and survival. Conversely, reproduction in any year was positively correlated with survival, providing evidence of individual quality influencing adult survival. The distance an individual had to travel to agriculture, where most individuals forage, was negatively related to survival. Primary productivity within the average Swainson's hawk territory was positively correlated with adult survival. Our results indicate that individuals may have higher survival and fitness in areas with high proportions of irrigated agriculture that provides high prey densities, particularly alfalfa. © 2011 The Wildlife Society.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Christopher W. 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Primary productivity within the average Swainson's hawk territory was positively correlated with adult survival. 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Specifically, we examined age‐related patterns in adult apparent survival and how adult survival was correlated with average annual nest productivity, annual reproductive output, western juniper (<i>Juniperus occidentalis</i>) density around nest sites, distance to agriculture, and amount of agriculture within a territory. Annual estimates of adult survival varied from 0.85 to 0.9 (SE = 0.02). There were no indications of senescence or other patterns of age‐related changes in adult apparent survival. Adult survival was inversely correlated with average reproductive output, with individuals producing >2 offspring having decreased survival, reflecting a possible trade‐off between reproduction and survival. Conversely, reproduction in any year was positively correlated with survival, providing evidence of individual quality influencing adult survival. The distance an individual had to travel to agriculture, where most individuals forage, was negatively related to survival. Primary productivity within the average Swainson's hawk territory was positively correlated with adult survival. Our results indicate that individuals may have higher survival and fitness in areas with high proportions of irrigated agriculture that provides high prey densities, particularly alfalfa. © 2011 The Wildlife Society.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1"><p>Associate Editor: Marc Bechard</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Correlates of survival in Swainson's hawks breeding in northern California</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Survival in Swainson's Hawks</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Correlates of survival in Swainson's hawks breeding in northern California</title></titleInfo><name type="personal"><namePart type="given">Christopher W.</namePart><namePart type="family">Briggs</namePart><affiliation>Program in Ecology, Evolution, and Conservation Biology, Department of Natural Resources and Environmental Science, University of Nevada, 1000 Valley Road, Reno, NV 89512, USA</affiliation><affiliation>Program in Ecology, Evolution, and Conservation Biology, Department of Natural Resources and Environmental Science, University of Nevada, 1000 Valley Road, Reno, NV 89512, USA.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Brian</namePart><namePart type="family">Woodbridge</namePart><affiliation>US Fish and Wildlife Service, 1829 South Oregon Street, Yreka, CA 96058, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Michael W.</namePart><namePart type="family">Collopy</namePart><affiliation>Academy for the Environment, University of Nevada, 202 Ross Hall, Reno, NV 89512, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>John Wiley & Sons, Inc.</publisher><place><placeTerm type="text">Hoboken, USA</placeTerm></place><dateIssued encoding="w3cdtf">2011-08</dateIssued><dateCaptured encoding="w3cdtf">2010-04-15</dateCaptured><dateValid encoding="w3cdtf">2011-01-05</dateValid><copyrightDate encoding="w3cdtf">2011</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">4</extent><extent unit="tables">2</extent><extent unit="references">45</extent><extent unit="words">6582</extent></physicalDescription><abstract lang="en">We used a 30‐year study of breeding Swainson's hawks (Buteo swainsoni) in northern California to examine correlates of adult apparent survival using multistate models in Program MARK. Specifically, we examined age‐related patterns in adult apparent survival and how adult survival was correlated with average annual nest productivity, annual reproductive output, western juniper (Juniperus occidentalis) density around nest sites, distance to agriculture, and amount of agriculture within a territory. Annual estimates of adult survival varied from 0.85 to 0.9 (SE = 0.02). There were no indications of senescence or other patterns of age‐related changes in adult apparent survival. Adult survival was inversely correlated with average reproductive output, with individuals producing >2 offspring having decreased survival, reflecting a possible trade‐off between reproduction and survival. Conversely, reproduction in any year was positively correlated with survival, providing evidence of individual quality influencing adult survival. The distance an individual had to travel to agriculture, where most individuals forage, was negatively related to survival. Primary productivity within the average Swainson's hawk territory was positively correlated with adult survival. Our results indicate that individuals may have higher survival and fitness in areas with high proportions of irrigated agriculture that provides high prey densities, particularly alfalfa. © 2011 The Wildlife Society.</abstract><note type="content">*Associate Editor: Marc Bechard</note><subject lang="en"><genre>keywords</genre><topic>Buteo swainsoni</topic><topic>reproduction</topic><topic>survival</topic><topic>Swainson's hawk</topic><topic>trade‐off</topic></subject><relatedItem type="host"><titleInfo><title>The Journal of Wildlife Management</title></titleInfo><titleInfo type="abbreviated"><title>The Journal of Wildlife Management</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Research Article</topic></subject><identifier type="ISSN">0022-541X</identifier><identifier type="eISSN">1937-2817</identifier><identifier type="DOI">10.1002/(ISSN)1937-2817</identifier><identifier type="PublisherID">JWMG</identifier><part><date>2011</date><detail type="volume"><caption>vol.</caption><number>75</number></detail><detail type="issue"><caption>no.</caption><number>6</number></detail><extent unit="pages"><start>1307</start><end>1314</end><total>8</total></extent></part></relatedItem><identifier type="istex">9EF5D4CF550AD46C1AEAB929A2E02ACCC9B495BA</identifier><identifier type="DOI">10.1002/jwmg.167</identifier><identifier type="ArticleID">JWMG167</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © The Wildlife Society, 2011</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>John Wiley & Sons, Inc.</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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