Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean
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DOI：
10.1016/j/dsr2.2004.06.008
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发表时间：
2004-01-01
影响因子：
3
通讯作者：
Naganobu, M
中科院分区：
文献类型：
--
作者：
Reilly, S;Hedley, S;Naganobu, M
须鲸是南大洋南极磷虾的重要捕食者。在CCAMLR 2000年调查期间，为了估计南极磷虾的生物量和分布，国际捕鲸委员会的观察员进行了一项目视线样带调查，以估计调查区域内须鲸的数量。本文回顾了用于估计须鲸磷虾消费量的技术，并结合鲸鱼丰度估计，对南大洋南大西洋部分的磷虾消费量进行了估计。这项调查估计，目前在该地区进食的鲸鱼种群可能会消耗大约160万吨磷虾，但在夏季可能多达270万吨。虽然这只占该地区磷虾估计生物量的4-6%（可能还不到每年磷虾总产量的这一百分比），但如果要使须鲸生物量恢复到开发前的水平，在制定磷虾商业开发配额时，应考虑到过去或当前捕鲸活动造成的须鲸数量减少。Elsevier Ltd.出版。
Baleen whales are an important group of predators on Antarctic krill in the Southern Ocean. During the CCAMLR 2000 Survey to estimate the biomass and distribution of Antarctic krill, International Whaling Commission observers carried out a visual line transect survey to estimate the number of baleen whales occurring in the survey area. This paper reviews techniques used to estimate krill consumption by baleen whales and in combination with estimates of whale abundance estimates of krill consumption are generated for the South Atlantic sector of the Southern Ocean. This survey estimates that the present populations of whales feeding in this region are likely to consume approximately 1.6 million tonnes, but possibly up to as much as 2.7 million tonnes of krill within the summer season. Although this only represents 4-6% of the estimated krill biomass in the region (and probably less than this percentage of the total annual krill production), the depleted numbers of baleen whales resulting from past or current whaling activities should be taken into account when setting quotas for the commercial exploitation of krill if there is to be a recovery to pre-exploitation biomass levels of baleen whales. Published by Elsevier Ltd.