NDLI: El Niño drives timing of breeding but not population growth in the song sparrow (Melospiza melodia)

Content Provider	PubMed Central
Author	Wilson, Scott Peter, Arcese
Copyright Year	2003
Abstract	Increasing evidence suggests that climate change affects the timing of breeding in birds, but there is less evidence to show how such changes affect the population dynamics of birds overall. Over the past 43 years, song sparrows (Melospiza melodia) on Mandarte Island, British Columbia, Canada have not shown an advance in breeding date in response to global warming. However, this population did show considerable annual variation in timing of breeding correlated with the El Niño Southern Oscillation. Birds bred earlier in warmer El Niño years and later in colder La Niña years. Early breeding strongly increased reproductive output. However, annual variation in timing of breeding had little effect on population growth, perhaps because the population is strongly regulated by the rate of recruitment by juveniles. The juvenile recruitment rate declined with increasing population density but showed little response to climate. These findings suggest that populations will vary in response to climate change depending on how climate affects the demographic parameters that contribute most to population growth.
Related Links	http://dx.doi.org/10.1073/pnas.1931407100
Ending Page	11142
Page Count	4
Starting Page	11139
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	19
Volume Number	100
Language	English
Publisher	National Academy of Sciences
Publisher Date	2003-09-16
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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El Niño drives timing of breeding but not population growth in the song sparrow (Melospiza melodia).

Data from: A microsatellite-based linkage map for song sparrows (Melospiza melodia) (Dataset)

A high-quality genome assembly of the North American Song Sparrow, Melospiza melodia

Data from: Habitat preference facilitates successful early breeding in an open-cup nesting songbird (Dataset)

Data from: Song learning and cognitive ability are not consistently related in a songbird (Dataset)

Elevating perceived predation risk modifies the relationship between parental effort and song complexity in the song sparrow Melospiza melodia

Data from: Elevating perceived predation risk modifies the relationship between parental effort and song complexity in the song sparrow (Melospiza melodia) (Dataset)

Data from: Developmental timing of signals affects information content: song complexity but not consistency reflects innate immune strategy in male song sparrows (Dataset)

Seasonal Differences of Gene Expression Profiles in Song Sparrow (Melospiza melodia) Hypothalamus in Relation to Territorial Aggression

El Niño drives timing of breeding but not population growth in the song sparrow (Melospiza melodia)

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El Niño drives timing of breeding but not population growth in the song sparrow (Melospiza melodia).

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El Niño drives timing of breeding but not population growth in the song sparrow (Melospiza melodia)