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AVIFAUNAL EQUILIBRIA AND SPECIES TURNOVER RATES ON THE CHANNEL ISLANDS OF CALIFORNIA
Open accessAbstract
Insular species diversities, and their dependence on island size and isolation, have been postulated to represent a dynamic equilibrium between species immigration rates and species extinction rates. This interpretation has been tested by determining the land and freshwater birds breeding on the nine Channel Islands off southern California in 1968 and comparing the results with a similar survey for the years up to 1917. Most of the islands were found to be in equilibrium as to number of species, but between 17 and 62 per cent of the 1917 breeding species had disappeared by 1968, and an approximately equal number of new immigrant species had become established. Percentage turnover rates vary inversely as insular species diversities, with no effect of distance apparent.
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Citations
Cited by
Species diversity: from global decreases to local increases
Sax, D. F., & Gaines, S. D. (2003) · Trends in Ecology & Evolution · doi:10.1016/s0169-5347(03)00224-6 · Cited by 860
Biogeographic Kinetics: Estimation of Relaxation Times for Avifaunas of Southwest Pacific Islands
Diamond, J. M. (1972) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.69.11.3199 · Cited by 643
Self-citationExperimental Zoogeography of Islands: Effects of Island Size
Simberloff, D. (1976) · Ecology · doi:10.2307/1936179 · Cited by 377
Metadata
- Authors
- Diamond, J. M.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1969-09
- Volume
- 64
- Issue
- 1
- Pages
- 57-63
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1978338608
- Cited by
- 277
- References
- 0
- FWCI
- 7.18
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: AVIFAUNAL EQUILIBRIA AND SPECIES TURNOVER RATES ON THE CHANNEL ISLANDS OF CALIFORNIA. https://app.cochat.ai/papers/10.1073/pnas.64.1.57
- The paper
- Diamond, J. M. (1969). AVIFAUNAL EQUILIBRIA AND SPECIES TURNOVER RATES ON THE CHANNEL ISLANDS OF CALIFORNIA. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.64.1.57
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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