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Abundance, distribution, and seasonality of cetaceans within the U.S. Exclusive Economic Zone around the Hawaiian Archipelago based on species distribution models
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2022
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[PDF-4.72 MB]
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Description:To better understand the abundance and distribution of cetaceans in the winter months, a winter HICEAS survey was conducted within offshore waters around the MHI from 18 January to 12 March 2020 (Yano et al. 2018). The “Winter HICEAS” or WHICEAS 2020 survey was conducted as part of the Pacific Marine Assessment Program for Protected Species (PacMAPPS), a partnership between NOAA Fisheries, Bureau of Ocean Energy Management (BOEM), and the U.S. Navy. The primary objective of this line-transect survey was to collect cetacean sighting data to support the derivation of cetacean density estimates using both design- and model-based analyses and to investigate seasonal differences in abundance and distribution of cetaceans. A secondary objective of the survey was to derive stock-specific density estimates for insular stocks of various species within the main Hawaiian Islands. Given limitations in near-shore survey effort and small sample size, density estimates were explored only for pantropical spotted and common bottlenose dolphins. This report summarizes the results of the SDM effort. The design-based estimates are described separately in Bradford et al. (in press).
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Rights Information:Public Domain
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Compliance:Submitted
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