Inferring spatial structure from time-series data: using multivariate state-space models to detect metapopulation structure of California sea lions in the Gulf of California, Mexico
نویسندگان
چکیده
Eric J. Ward*, Haridas Chirakkal, Manuela González-Suárez†, David Aurioles-Gamboa, Elizabeth E. Holmes and Leah Gerber National Marine Fisheries Service, Northwest Fisheries Science, Center, 2725 Montlake Boulevard East, Seattle, WA 98112, USA; Ecology, Evolution and Environmental Sciences, School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA; Laboratoire d’Ecologie et Evolution CNRS – UMR 7625 Université Pierre et Marie Curie 7 Quai St Bernard, 75005 Paris, France; and CICIMAR-IPN, Avenida IPN s ⁄n Col. Playa Palo de Santa Rita 23096, La Paz Baja, Baja California Sur, Mexico
منابع مشابه
Isolation by distance among California sea lion populations in Mexico: redefining management stocks.
Understanding the spatial structure of a population is critical for effective assessment and management. However, direct observation of spatial dynamics is generally difficult, particularly for marine mammals. California sea lions (Zalophus californianus) are polygynous pinnipeds distributed along the Pacific coast of North America. The species' range has been subdivided into three management s...
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Human exploitation can lead to genetic bottlenecks associated with reduced genetic variability and lower fitness. The population of California sea lions (Zalophus californianus) in the Gulf of California, Mexico, was hunted during the 19th and 20th centuries, potentially leading to a genetic bottleneck; however, even exploitation that leads to low population sizes does not always cause genetic ...
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California sea lions aggregate in high density colonies during the breeding season. Competition for space and mates results in agonistic interactions that may have long-term population consequences. We explored how demographic, behavioral, and environmental variables influence the rate of agonistic interactions in male and female California sea lions at three breeding colonies with varying popu...
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