Foraging areas of Short-tailed Shearwaters during their northward migration along the Pacific coast of northern Japan
Foraging areas of Short-tailed Shearwaters during their northward migration along the Pacific coast of northern Japan
复制标题
短尾海鸥沿着日本北部太平洋海岸向北迁徙时的觅食区
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
S. Ito
中科院分区：
文献类型：
--
作者：
S. Ito
1999年4月，在日本东北部三陆和常磐地区，在向北迁徙的过程中，发现了一只细吻海雀。短尾剪水鸥在澳大利亚东南部和塔斯马尼亚繁殖，在非繁殖季节迁徙到北太平洋。在迁徙过程中，部分种群会在4月至6月间沿北方日本海岸沿着迁移（Serventy 1953; Shuntov 1974; Degawa & Watabe 1983; Watabe et al. 1987）。太平洋磷虾（Euphausia pacifica）是该海域丰富的浮游动物种类，被认为是海洋生物食物网中的关键物种（Taki et al. 1996; Taki 1998）。白令海短尾剪水鸥在其游牧阶段的分布格局和觅食生态学已在白令海进行了研究，其中数百万只短尾剪水鸥主要以磷虾类为食（Ogi et al. 1980; Schneider et al. 1986; Hunt et al. 1996），然而，对它们向北迁徙期间的生态学知之甚少。在本文中，我讨论了觅食分布的短尾剪水在此向北迁移，通过分析的密度和行为的剪水猎物的可用性。
ters Puffinus tenuirostris off the Sanriku and Joban districts of northeastern Japan in April 1999 during their northward migration. Short-tailed Shearwaters breed in southeastern Australia and Tasmania and migrate to the North Pacific in the non-breeding season. During migration, part of the population passes along the coast of northern Japan between April and June (Serventy 1953; Shuntov 1974; Degawa & Watabe 1983; Watabe et al. 1987). In this area, Euphausia pacifica is an abundant zooplankton species and is considered to be a key species in food web among marine organisms (Taki et al. 1996; Taki 1998). The distribution pattern and foraging ecology of the Short-tailed Shearwaters during their nomadic phase have been studied in the Bering Sea, where millions of these birds feed predominantly on euphausiids (Ogi et al. 1980; Schneider et al. 1986; Hunt et al. 1996), however, little is known about their ecology during the northward migration period. In the present paper, I discuss the foraging distribution of Shorttailed Shearwaters during this northward migration by analyzing the density and behavior of shearwaters in relation to prey availability.