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Effects of the 1982-83 El Niño – Southern Oscillation on Pacific Ocean bird populations
January 1, 1988
Seabird reproductive success, population size, and movements in the Pacific region responded dramatically to the 1982-83 El Niño – Southern Oscillation (ENSO). At sites within the North and South Pacific Gyres, the onset of seabird responses tracked oceanographic changes related to ENSO; to the north of the gyres, responses were delayed 1 yr. Reproductive failures and high adult mortality were detected at all sites investigated. Post-ENSO, the return to “normal” nesting patterns depended on species and locality. The 1982-83 ENSO revealed a dimension to the variability in seabird reproductive biology only now appreciated by ornithologists.
Citation Information
Publication Year
1988
Title
Effects of the 1982-83 El Niño – Southern Oscillation on Pacific Ocean bird populations
Authors
David G. Ainley, H.R. Carter, Daniel W. Anderson, Kenneth T. Briggs, Malcom C. Coulter, F. Cruz, J.B. Cruz, C.A. Valle, S.I. Fefer, Scott A. Hatch, Elizabeth Anne Schreiber, Ralph W. Schreiber, N.G. Smith