Arid
DOI10.1111/jav.02286
Population decline of a long-distance migratory passerine at the edge of its range: nest predation, nest replacement and immigration
Murphy, Michael T.; Redmond, Lucas J.; Dolan, Amy C.; Cooper, Nathan W.; Chutter, Christopher M.; Cancellieri, Sarah
通讯作者Murphy, MT
来源期刊JOURNAL OF AVIAN BIOLOGY
ISSN0908-8857
EISSN1600-048X
出版年2020
卷号51期号:6
英文摘要The relative importance of predators and resources (i.e. food) for the dynamics of migratory bird populations is poorly known. Resource availability may be more likely in resource poor environments, but given that nest failure in most systems is due mainly to predation, predator effects may predominate. We document a rapid decline of an isolated eastern kingbirdTyrannus tyrannuspopulation breeding in the Great Basin Desert of eastern Oregon, USA, and evaluate whether it was driven by limited food resources (water availability similar to food), nest predation, or first-year or adult return rate (RR(J)and RRA, respectively) that reflect nonbreeding season events. Most nests failed (similar to 68% of nests) due mainly to nest predation (> 90% of failures); nestling starvation was rare. Bioyear precipitation (October-April), breeding season precipitation, and river flow all varied widely but none could account for annual variation in either nest success (NS) or fledging success of successful nest (FSSN). Neither RR(J)nor RR(A)varied with year, any measure of water resources, or reproductive success. Annual population growth rate (ln[Nt+1/N-t]) was independent of year, all measures of water availability, RR(J)and RRA, and NS of replacement nests, but was high following years of high NS of initial nests; FSSN was also higher in years of high NS. High rates of nest predation, due likely to the expansion of the local American crowCorvus brachyrhynchospopulation, appeared to drive the population decline. Empirical data and population simulations indicated that replacement nests contributed little to lambda, while simulations revealed that, given site-specific vital rates, the decline would have been even greater without immigration (lambda = 0.812) than the observed (lambda = 0.914). Long distance dispersal may thus be critical for persistence of kingbirds in the naturally highly fragmented habitat that it occupies in the Great Basin Desert.
英文关键词annual fecundity immigration lambda nest predation population decline replacement nests
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000553360800003
WOS关键词WOODPECKERS MELANERPES-ERYTHROCEPHALUS ; EASTERN KINGBIRD TYRANNUS ; REPRODUCTIVE-BIOLOGY ; SEASONAL FECUNDITY ; BREEDING BIOLOGY ; PLANT DIVERSITY ; CLUTCH SIZE ; BROOD SIZE ; DYNAMICS ; BIRD
WOS类目Ornithology
WOS研究方向Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/325262
作者单位[Murphy, Michael T.; Redmond, Lucas J.; Dolan, Amy C.; Cooper, Nathan W.; Chutter, Christopher M.; Cancellieri, Sarah] Portland State Univ, Dept Biol, Portland, OR 97207 USA; [Redmond, Lucas J.] Penn State Schuykill, Dept Biol, Schuylkill Haven, PA USA; [Dolan, Amy C.] Northern State Univ, Dept Biol, Aberdeen, SD USA; [Cooper, Nathan W.] Migratory Bird Ctr, Smithsonian Conservat Biol Inst, Washington, DC USA; [Chutter, Christopher M.] Minist Adv Educ, Victoria, BC, Canada
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GB/T 7714
Murphy, Michael T.,Redmond, Lucas J.,Dolan, Amy C.,et al. Population decline of a long-distance migratory passerine at the edge of its range: nest predation, nest replacement and immigration[J],2020,51(6).
APA Murphy, Michael T.,Redmond, Lucas J.,Dolan, Amy C.,Cooper, Nathan W.,Chutter, Christopher M.,&Cancellieri, Sarah.(2020).Population decline of a long-distance migratory passerine at the edge of its range: nest predation, nest replacement and immigration.JOURNAL OF AVIAN BIOLOGY,51(6).
MLA Murphy, Michael T.,et al."Population decline of a long-distance migratory passerine at the edge of its range: nest predation, nest replacement and immigration".JOURNAL OF AVIAN BIOLOGY 51.6(2020).
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