Summer and Autumn Movements and Habitat Use by Belugas in the Canadian High Arctic and Adjacent Areas
Summer and Autumn Movements and Habitat Use by Belugas in the Canadian High Arctic and Adjacent Areas
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加拿大高北极及邻近地区白鲸的夏秋迁徙和栖息地利用
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. G. Smith
中科院分区：
文献类型：
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作者：
P. Richard;M. Heide‐Jørgensen;J. Orr;R. Dietz;T. G. Smith
1996 年夏秋两季，现场捕获了 21 头成年白鲸（8M、13F），并安装了卫星连接发射机。7 月在萨默塞特岛沿岸的河口捕获了 12 头白鲸，9 月在德文岛东南部的克罗克湾捕获了 9 头白鲸。本文报告了从 1996 年 7 月下旬到 1996 年 11 月最后一个标签停止传输期间这些动物的夏季和秋季活动和潜水深度。在 7 月份捕获的 12 只动物中，有 11 只提供了 30-126 天的数据（平均值 = 84 天）。大多数动物迅速迁移到皮尔海峡南部，在那里度过了整个八月，并频繁地进行深潜，其中一些深入到富兰克林海沟的海底或附近。白鲸还使用了威尔士王子岛沿岸的几个海湾和梅尔维尔半岛的另一个海湾。他们在八月下旬至九月初离开皮尔湾南部，迅速前往德文岛南海岸，其中许多人在麦克斯韦湾和克罗克湾停留了几天。 9月份在克罗克湾检测到的所有白鲸，以及仍在传播的带有夏季标签的白鲸，沿着德文岛的南部和东部海岸向东和向北移动，最终到达琼斯湾和巴芬湾北部。他们利用德文岛东海岸的许多海湾，在周围海域潜入深度常常超过200米。在通常观察到白鲸沿着格陵兰岛西海岸迁徙的时期（九月底至十月初），有 15 个标签继续传输。九月下旬，只有一只被标记的动物迁移到格陵兰岛水域。其他人则留在冬季被称为“北水”的地区。秋季追踪结果表明，北水区的冬季白鲸种群数量可能比之前的猜测还要多。
Twenty-one adult belugas (8M, 13F) were live-captured and instrumented with satellite-linked transmitters in the summer and fall of 1996. Twelve were captured in estuaries along the coast of Somerset Island in July and nine were captured in September in Croker Bay, SE Devon Island. This paper reports on the summer and autumn movements and dive depths of these animals from late July 1996 until the last tags ceased transmitting in November 1996. Of the 12 captured in July, 11 provided data for 30-126 days (mean = 84 days). Most of the animals moved rapidly to southern Peel Sound, where they all spent the month of August, making frequent deep dives, some of which were to depths near or at the seabed of the Franklin Trench. The belugas also used several bays along the coast of Prince of Wales Island and another one on Melville Peninsula. They left southern Peel Sound between late August and early September and moved rapidly to the south coast of Devon Island, many using Maxwell Bay and Croker Bay for several days. All belugas instrumented in Croker Bay in September, as well as the summer-tagged individuals that were still transmitting, moved east and north along the south and east coasts of Devon Island, eventually reaching Jones Sound and north Baffin Bay. They used many bays along the east coast of Devon Island and dove to depths often exceeding 200 m in the surrounding waters. Fifteen of the tags continued to transmit during the period when belugas are normally observed migrating along the West Greenland coast (late September-early October). Only one of the tagged animals moved to Greenland waters in late September. The others remained in the area known in winter as the North Water. The autumn tracking results suggest that the North Water may harbour a larger winter population of belugas than was previously suspected.