Catch statistics for belugas in West Greenland 1862 to 1999

M. Heide‐Jørgensen, A. Rosing-Asvid
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引用次数: 6

Abstract

Information and statistics including trade statistics on catches of white whales or belugas ( Delphinapterus leucas ) in West Greenland since 1862 are presented. The period before 1952 was dominated by large catches south of 66o N that peaked with 1,380 reported kills in 1922. Catch levels in the past five decades are evaluated on the basis of official catch statistics, trade in mattak (whale skin), sampling of jaws and reports from local residents and other observers. Options are given for corrections of catch statistics based upon auxiliary statistics on trade of mattak, catches in previous decades for areas without reporting and on likely levels of loss rates in different hunting operations. The fractions of the reported catches that are caused by ice entrapments of whales are estimated. During 1954-1999 total reported catches ranged from 216 to 1,874 and they peaked around 1970. Correcting for underreporting and killed-but-lost whales increases the catch reports by 42% on average for 1954-1998. If the whales killed in ice entrapments are removed then the corrected catch estimate is on average 28% larger than the reported catches.
1862年至1999年西格陵兰岛白鲸捕获量统计
介绍了自1862年以来西格陵兰岛白鲸或白鲸(Delphinapterus leucas)捕捞的贸易统计信息和统计数据。1952年之前,北纬66度以南的大量捕捞活动占据了主导地位,1922年有1380人被捕杀。过去50年的捕获量是根据官方捕获量统计、mattak(鲸皮)贸易、颌骨取样以及当地居民和其他观察员的报告来评估的。根据mattak贸易的辅助统计、过去几十年未报告地区的渔获量以及不同狩猎活动可能的损失率水平,给出了修正渔获量统计的备选办法。报告的捕获量中有一部分是由冰捕鲸鱼造成的。在1954-1999年期间,报告的总渔获量为216至1874,在1970年左右达到高峰。在1954年至1998年期间,对少报和被杀但失踪的鲸鱼进行校正后,捕捞报告平均增加了42%。如果在冰捕中被杀死的鲸鱼被移除,那么修正后的捕获量估计平均比报告的捕获量高出28%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.60
自引率
0.00%
发文量
4
审稿时长
52 weeks
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