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Studies in Avian Biology - Number 11

Bird Communities at Sea off California: 1975 to 1983

Kenneth T. Briggs, WM. Breck Tyler, David B. Lewis and David R. Carlson


1 Abstract
3 Introduction
4 Methods
4 Sampling Plan and Coverage at Sea
5 Observation Protocols
5 Shoreline Methods and Coverage
6 Environmental Data
7 Analyses
8 Oceanography of the Study Area
8 Bathymetry
8 General Characteristics of Surface Waters
9 Upwelling
11 Important Mesoscale Features
11 Results
11 Seabird Numbers and Status: Species Accounts
47 Seabird Density and Biomass
49 Diversity and Species Composition
52 Associations Between Species
56 Spatial Scales of Aggregation
58 Seabird Habitats
63 Scales of Variation in Surface Temperature
64 Discussion
64 Variation in Biomass and Abundance
66 Community Composition and Diversity
67 Species Associations
68 Seabird Habitats and Habitat Choice
71 Acknowledgments
71 Literature Cited
Cover to Cover


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