Global habitat preferences of commercially valuable tuna
Global habitat preferences of commercially valuable tuna
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DOI：
10.1016/j.dsr2.2014.07.001
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发表时间：
2015-03-01
影响因子：
3
通讯作者：
Bonhomeau, Sylvain
中科院分区：
文献类型：
--
作者：
Arrizabalaga, Haritz;Dufour, Florence;Bonhomeau, Sylvain
尽管在今后实施渔业管理的生态系统办法方面发挥了关键作用，但目前关于金枪鱼栖息地偏好的知识仍然是零散和多样的，因为它主要依赖于区域或地方研究，这些研究使用了各种方法，使它们很难结合起来。因此，在这项研究中，我们分析了太平洋、大西洋和印度洋的六种金枪鱼的数据，以提供关于栖息地偏好的全球比较视角。这些数据是从1958年到2007年长鳍金枪鱼、大西洋蓝鳍金枪鱼、南部蓝鳍金枪鱼、大眼金枪鱼、黄鳍金枪鱼和短吻金枪鱼的单位努力延绳钓渔获量。商分析和广义加性模型被用来确定关于8个生物和非生物变量的栖息地偏好。结果证实，与温带金枪鱼相比，热带金枪鱼更喜欢温暖、缺氧的分层水域。大西洋蓝鳍金枪鱼和南部蓝鳍金枪鱼比其他金枪鱼喜欢更高浓度的叶绿素。这两个物种还能容忍最极端的海面高度异常和最高的混合层深度。一般来说，大西洋蓝鳍金枪鱼能忍受最广泛的环境条件。还提供了对决定鱼类栖息地的最重要变量的评估。(C)2014爱思唯尔有限公司。保留所有权利。
In spite of its pivotal role in future implementations of the Ecosystem Approach to Fisheries Management, current knowledge about tuna habitat preferences remains fragmented and heterogeneous, because it relies mainly on regional or local studies that have used a variety of approaches making them difficult to combine. Therefore in this study we analyse data from six tuna species in the Pacific, Atlantic and Indian Oceans in order to provide a global, comparative perspective of habitat preferences. These data are longline catch per unit effort from 1958 to 2007 for albacore, Atlantic bluefin, southern bluefin, bigeye, yellowfin and skipjack tunas. Both quotient analysis and Generalised Additive Models were used to determine habitat preference with respect to eight biotic and abiotic variables. Results confirmed that, compared to temperate tunas, tropical tunas prefer warm, anoxic, stratified waters. Atlantic and southern bluefin tuna prefer higher concentrations of chlorophyll than the rest. The two species also tolerate most extreme sea surface height anomalies and highest mixed layer depths. In general, Atlantic bluefin tuna tolerates the widest range of environmental conditions. An assessment of the most important variables determining fish habitat is also provided. (C) 2014 Elsevier Ltd. All rights reserved.