Bonifait2006302

Référence

Bonifait, S.S., Villard, M.-A., Paulin, D. (2006) An index of reproductive activity provides an accurate estimate of the reproductive success of Palm Warblers. Journal of Field Ornithology, 77(3):302-309. (Scopus )

Résumé

Various indices of reproductive activity (IRA) have been used to estimate the reproductive success of songbirds. However, the performance of IRAs varies among systems examined, and this approach still requires more effort than standard surveys. We tested the accuracy of an IRA in a survey of birds nesting in bogs in eastern New Brunswick, Canada. We compared an IRA obtained through point counts with playbacks ("extensive" IRA) to another IRA obtained through intensive searches for evidence of breeding ("intensive" IRA) by Palm Warblers (Dendroica palmarum). Both the extensive IRA and associated abundance index were correlated with the intensive IRA, the former correlation being stronger. However, the extensive IRA tended to underestimate the status of breeding birds and overestimate the status of nonreproducing individuals that behaved more conspicuously. Nonetheless, the extensive IRA obtained using song playbacks represents a time-efficient alternative to intensive nest monitoring when estimating habitat quality at the scale of small (0.78 ha) study plots. © 2006 Association of Field Ornithologists.

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@ARTICLE { Bonifait2006302,
    AUTHOR = { Bonifait, S.S. and Villard, M.-A. and Paulin, D. },
    TITLE = { An index of reproductive activity provides an accurate estimate of the reproductive success of Palm Warblers },
    JOURNAL = { Journal of Field Ornithology },
    YEAR = { 2006 },
    VOLUME = { 77 },
    NUMBER = { 3 },
    PAGES = { 302-309 },
    NOTE = { cited By 6 },
    ABSTRACT = { Various indices of reproductive activity (IRA) have been used to estimate the reproductive success of songbirds. However, the performance of IRAs varies among systems examined, and this approach still requires more effort than standard surveys. We tested the accuracy of an IRA in a survey of birds nesting in bogs in eastern New Brunswick, Canada. We compared an IRA obtained through point counts with playbacks ("extensive" IRA) to another IRA obtained through intensive searches for evidence of breeding ("intensive" IRA) by Palm Warblers (Dendroica palmarum). Both the extensive IRA and associated abundance index were correlated with the intensive IRA, the former correlation being stronger. However, the extensive IRA tended to underestimate the status of breeding birds and overestimate the status of nonreproducing individuals that behaved more conspicuously. Nonetheless, the extensive IRA obtained using song playbacks represents a time-efficient alternative to intensive nest monitoring when estimating habitat quality at the scale of small (0.78 ha) study plots. © 2006 Association of Field Ornithologists. },
    AFFILIATION = { Department of Biology, University of Moncton, Moncton, NB E1A 3E9, Canada },
    AUTHOR_KEYWORDS = { Bogs; Dendroica palmarum; Index of reproductive activity; Playbacks; Point counts; Reproductive success },
    DOCUMENT_TYPE = { Review },
    DOI = { 10.1111/j.1557-9263.2006.00056.x },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-33748462299&doi=10.1111%2fj.1557-9263.2006.00056.x&partnerID=40&md5=a27efaa1f3e0564dee23e5792daf4a82 },
}

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