期刊
ECOLOGICAL APPLICATIONS
卷 22, 期 6, 页码 1711-1717出版社
ECOLOGICAL SOC AMER
DOI: 10.1890/11-1653.1
关键词
connectivity; isotope; management; marine; Palmyra Atoll; predator; reserve
资金
- National Science Foundation
- Woods Institute for the Environment
- Myers Oceanographic and Marine Biology Trust
- Chambers
- Alden H. and Winifred Brown Fellowship
Large predators are often highly mobile and can traverse and use multiple habitats. We know surprisingly little about how predator mobility determines important processes of ecosystem connectivity. Here we used a variety of data sources drawn from Palmyra Atoll, a remote tropical marine ecosystem where large predators remain in high abundance, to investigate how these animals foster connectivity. Our results indicate that three of Palmyra's most abundant large predators (e.g., two reef sharks and one snapper) use resources from different habitats creating important linkages across ecosystems. Observations of cross-system foraging such as this have important implications for the understanding of ecosystem functioning, the management of large-predator populations, and the design of conservation measures intended to protect whole ecosystems. In the face of widespread declines of large, mobile predators, it is important that resource managers, policy makers, and ecologists work to understand how these predators create connectivity and to determine the impact that their depletions may be having on the integrity of these linkages.
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