Distribution of migrating Short-tailed Shearwater and breeding Rhinoceros Auklet and their prey in the northern Sea of Japan, Hokkaido in spring
作者： Kouta Kurasawa , Satoshi Honda , Yutaka Watanuki
DOI: 10.3838/JJO.60.216
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摘要: A survey of the at-sea distributions 1) planktivorous Short-tailed Shearwater Puffinus tenuirostris, migrating to their northern summering area and 2) piscivorous Rhinoceros Auklet Cerorhinca monocerata, breeding in Sea Japan off Hokkaido, was carried out by ship, from 16 28 May 2008. Avian censuses were combined with: acoustic surveys aimed at measuring prey density, sea surface temperature (SST) surveys. Surface Chlorophyll a distribution obtained using satellite imagery. The density shearwaters correlated positively with 200 kHz SA (the index zooplankton including krill) 10 km scale, negatively both SST a. However, shearwater densities not significantly result suggest that may be able find patches krill cold water. In contrast, Auklets 38 pelagic fish density) or any scale.
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