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首页> 外文期刊>Ocean & coastal management >Evaluating habitat suitability and relative abundance of skipjack (Katsuwonus pelamis) in the Western and Central Pacific during various El Nino events
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Evaluating habitat suitability and relative abundance of skipjack (Katsuwonus pelamis) in the Western and Central Pacific during various El Nino events

机译：在各种厄尔尼诺事件期间，评估西太平洋和中太平洋skip鱼的栖息地适宜性和相对丰度

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摘要

The changes in skipjack (Katsuwonus pelamis) resources in the Western and Central Pacific Ocean (WCPO) region are subject to not only fishing activities but also the profound impacts of El Nitio. Previous studies have suggested that there are two different types of El Nino events, which differentially influence currents, upwelling, chlorophyll concentrations, and temperature in the tropical Pacific Ocean. The comprehensive interaction mechanism between the skipjack stock and El Nino events remains unclear. Thus, an understanding of the differences in the effects between the two types of El Nino is urgently needed to protect skipjack resources. This study analyzed fisheries data and oceanographic conditions for the period of 1996-2012 to construct a habitat suitability index (HSI) model and conduct catch per unit effort.(CPUE) standardization to a) identify skipjack habitat and determine relative abundance, b) compare habitat suitability and relative abundance between different types of El Niflo events, and c) understand the effects of the two different types of El Nino on skipjack. The results demonstrate that 1) the arithmetic mean model (AMM) was found to be the optimal HSI model for skipjack in the WCPO region and for different El Nitio events; 2) the factors of time, locatidh and fishing method should be considered in the CPUE standardization before their application in the estimation of relative abundance; 3) Central Pacific El Nino events (CP El Nino) and Eastern Pacific El Nino events (EP El Nino) Were found to have negative effects on skipjack, and relatively higher vulnerability values were found to be associated with the simultaneous occurrence of the two types of El Nino (such simultaneous occurrences may account for significant historical El Nino events); 4) in terms of the consequences of the diff&ent types of El Nino events, CP El Nilio events tend to exert more negative influence on relative abundance than EP El Nino events can do; and 5) spatial factors tend to exert more influence than temporal factors in the relative abundance assessment. This study enhances our understanding of the consequences of different El Niiio events. In addition, the findings may help inform researchers and policy makers in future resource assessment and management. (C) 2017 Elsevier Ltd. All rights reserved.
机译：西太平洋和中太平洋（WCPO）地区skip鱼（Katsuwonus pelamis）资源的变化不仅受到钓鱼活动的影响，而且还受到厄尔尼诺（El Nitio）的深刻影响。先前的研究表明，厄尔尼诺事件有两种不同类型，它们对热带太平洋的洋流，上升流，叶绿素浓度和温度有不同的影响。 the鱼股票与厄尔尼诺事件之间的全面互动机制仍不清楚。因此，迫切需要了解两种厄尔尼诺现象之间的差异，以保护protect鱼资源。这项研究分析了1996-2012年期间的渔业数据和海洋条件，以构建栖息地适宜性指数（HSI）模型并进行每单位工作量的捕捞。（CPUE）标准化以a）识别skip鱼栖息地并确定相对丰度，b）比较不同类型的El Niflo事件之间的生境适应性和相对丰度，以及c）了解两种不同类型的El Nino对on鱼的影响。结果表明：1）发现算术平均模型（AMM）是WCPO地区skip鱼和不同El Nitio事件的最佳HSI模型； 2）在计算相对丰度之前，应在CPUE标准化中考虑时间，游历和捕鱼方法等因素； 3）发现中太平洋的El Nino事件（CP El Nino）和东太平洋的El Nino事件（EP El Nino）对）鱼产生负面影响，并且发现较高的脆弱性值与两种类型的同时发生相关厄尔尼诺现象（这种同时发生可能是厄尔尼诺现象的重大历史事件）； 4）就厄尔尼诺事件的不同类型造成的后果而言，厄尔尼诺CP事件比EP El Nino事件可能对相对丰度产生更大的负面影响； 5）在相对丰度评估中，空间因素往往比时间因素影响更大。这项研究增进了我们对不同的厄尔尼诺事件的后果的理解。此外，研究结果可能有助于研究人员和决策者将来进行资源评估和管理。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean & coastal management》 |2017年第4期|153-160|共8页
  • 作者

    Yen Kuo-Wei; Wang Guihua; Lu Hsueh-Jung;

  • 作者单位

    Natl Taiwan Ocean Univ, Dept Environm Biol & Fisheries Sci, 2 Beining Rd, Keelung 20224, Taiwan|Natl Taiwan Ocean Univ, Ctr Excellence Oceans, 2 Beining Rd, Keelung 20224, Taiwan;

    Univ Hong Kong, Fac Social Sci, Dept Polit & Publ Adm, Bonham Rd, Porkfulam, Hong Kong, Peoples R China;

    Natl Taiwan Ocean Univ, Dept Environm Biol & Fisheries Sci, 2 Beining Rd, Keelung 20224, Taiwan|Natl Taiwan Ocean Univ, Ctr Excellence Oceans, 2 Beining Rd, Keelung 20224, Taiwan;

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  • 正文语种 eng
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  • 关键词

    El Nino; Skipjack; Habitat suitability; Relative abundance; WCPO;

    机译：El Nino;Skipjack;栖息地适宜性;相对丰度;WCPO;

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