Pinnipeds and El Niño

1. Front Matter

   Pages I-XIII

   PDF

2. Part I

   1. Front Matter

      Pages 1-1

      PDF

   2. Introduction

      • K. A. Ono, F. Trillmich

      Pages 3-7

   3. The Time Sequence and Magnitude of Physical Effects of El Niño in the Eastern Pacific

      • E. Fahrbach, F. Trillmich, W. Arntz

      Pages 8-21

   4. Biological Consequences of the 1982–83 EI Niño in the Eastern Pacific

      • W. Arntz, W. G. Pearcy, F. Trillmich

      Pages 22-42

3. Otariid Pinnipeds, General

   1. Front Matter

      Pages 43-43

      PDF

   2. Introductory Remarks on the Natural History of Fur Seals

      • F. Trillmich

      Pages 45-46

   3. El Niño Effects on Pinnipeds in Northern Chile

      • C. G. Guerra, G. K. Portflitt

      Pages 47-54

   4. El Niño Effects on Pinnipeds in Peru

      • P. Majluf

      Pages 55-65

   5. The Effects of El Niño on Galapagos Pinnipeds

      • F. Trillmich, T. Dellinger

      Pages 66-74

   6. Impact of the 1982–1983 El Niño on the Northern Fur Seal Population at San Miguel Island, California

      • R. L. DeLong, G. A. Antonelis

      Pages 75-83

   7. El Niño Effects on Adult Northern Fur Seals at the Pribilof Islands

      • R. L. Gentry

      Pages 84-93

   8. Sea Surface Temperatures and Their Relationship to the Survival of Juvenile Male Northern Fur Seals from the Pribilof Islands

      • A. E. York

      Pages 94-106

4. California Sea Lion

   1. Front Matter

      Pages 107-107

      PDF

   2. Introductory Remarks and the Natural History of the California Sea Lion

      • K. A. Ono

      Pages 109-111

   3. Effects of the El Niño 1982–83 on California Sea Lions in Mexico

      • D. Aurioles, B. J. Le Boeuf

      Pages 112-118

   4. Population Abundance, Pup Mortality, and Copulation Frequency in the California Sea Lion in Relation to the 1983 El Niño on San Nicolas Island

      • J. M. Francis, C. B. Heath

      Pages 119-128

   5. Changes in the Distribution of California Sea Lions North of the Breeding Rookeries During the 1982–83 El Niño

      • H. R. Huber

      Pages 129-137

   6. The Influence of El Niño on Female Attendance Patterns in the California Sea Lion

      • C. B. Heath, K. A. Ono, D. J. Boness, J. M. Francis

      Pages 138-145

   7. Effects of El Niño 1983 on the Foraging Patterns of California Sea Lions (Zalophus californianus) near San Miguel Island, California

      • S. D. Feldkamp, R. L. DeLong, G. A. Antonelis

      Pages 146-155

El Niño is a meteorological and oceanographic phenomenon, which occurs at irregular intervals in the eastern tropical Pacific. Its most obvious characteristic is the warming of surface waters, which causes enormous disturbances of the marine environment. A severe Niño may also affect continental systems worldwide. This book gathers in a comprehensive way the information available on the effects of the exceptionally strong 1982-83 Niño on a group of marine mammals, the pinnipeds. It presents an analysis of the effects of environmental stress on the populations of top predators. Data and interpretations are based on a most unusual collection of long-term studies of pinniped population dynamics, behavior and ecology which spanned the El Niño event. The responses of pinniped populations to the El Niño disturbance of the marine ecosystem also has important implications for the management and conservation of marine mammal populations.

• El Nino
• Ocean
• Robben
• Seelöwe
• Stress
• ecology
• ecosystem
• environment
• mammals
• marine
• population dynamics
• predator
• seals

• Lehrstuhl für Verhaltensforschung, Universität Bielefeld, Bielefeld, Germany

  Fritz Trillmich

• Institute of Marine Sciences, University of California, Santa Cruz, USA

  Kathryn A. Ono

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