Population Studies of Seabirds on Alcatraz Island, 2004
Gardner D, Thayer J, Merkle W. 2004. Population Studies of Seabirds on Alcatraz Island, 2004. PRBO Conservation Science. Stinson Beach, CA
Alcatraz Island has become a breeding site for a number of seabird species in recent years. In 2004, we monitored the population size, breeding phenology, and productivity of Brandt's Cormorants, Pelagic Cormorants, Western Gulls, Pigeon Guillemots, and Black Oystercatchers on Alcatraz. Disturbance to wildlife is a concern on Alcatraz, given its status as a heavily-visited national park and its location in the center of the San Francisco Bay. We recorded and catalogued disturbances to seabird populations from March through mid-September, 2004. Includes recommendations on management.
- Type
- Unpublished Report
- Authors
- Gardner, David; Thayer, Julie; Merkle, William
- Date of Issue
- 2004
- Publisher
- PRBO Conservation Science
- Units
- ALCA , GOGA , SFAN
- Keywords
- Alcatraz Island, Annual Report, Birds, Black oystercatchers, Brandt's cormorants, breeding chronology, Cepphus columba, Disturbance, Golden Gate National Recreation Area, Haematopus bachmani, Larus occidentalis, Monitoring, Pelagic cormorants, Phalacrocorax pelagicus, Phalacrocorax penicillatus, Pigeon Guillemots, reproductive performance, Seabirds, Western Gulls