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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Structure of euphausiid assemblages in the Eastern Tropical Pacific off Colombia during El Nino, La Nina and Neutral conditions
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Structure of euphausiid assemblages in the Eastern Tropical Pacific off Colombia during El Nino, La Nina and Neutral conditions

机译：在El Nino，La Nino，La Nino和中立条件下，在东方热带太平洋的Euphausiid组合的结构

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摘要

In order to understand how the structure and composition of euphausiid assemblages are affected by changes in environmental conditions caused by El Nino and La Nina events in the Colombian Pacific, euphausiids present in zooplankton samples obtained during Estudio Regional del Fenomeno El Nino - Cuenca Pacifica Colombiana (ERFEN-CPC) cruises, in September 2009 (El Nino), October 2011 (La Nina) and September 2012 (Neutral) were analyzed. Fifteen species (5 genera) were identified, of which Euphausia diomedeae was the most abundant during El Nino and Euphausia distinguenda was the most abundant during La Nina and the Neutral condition. In addition, considering all euphausiid species found in this study; under La Nina and Neutral conditions, juveniles were the most abundant phase; while during El Nino, furcilia larvae were the most abundant. During the Neutral condition, the total abundance of euphausiids was significantly higher than during El Nino and La Nina, suggesting that the environmental changes caused by these anomalous conditions would affect abundance due to possible movements of the species towards more favourable conditions. Finally, during El Nino, the euphausiid assemblage was significantly different from the other two conditions, suggesting that the increase in temperature produced by this condition affect the structure and composition of euphausiids assemblage in the Colombian Pacific.
机译：为了了解Euphausiid组合的结构和组成受哥伦比亚太平洋在哥伦比亚太平洋的埃尔·尼诺和LA NINA活动引起的环境条件变化的影响，Zooplankton样本在卓越岛地区Del Fenomeno El Nino-Cuenca Pacifica哥伦比亚人（埃尔芬委员会 - 2009年9月（El Nino），2011年10月（La Nino）和2012年9月（中性）的巡航进行了分析。鉴定了十五种（5种）（5属），其中Euphausia DioMedeae在El Nino和Euphausia氏菌在La Nina和中性病症期间最丰富的euphausia diomedeae是最丰富的。此外，考虑本研究中发现的所有euphausiid物种;在La Nina和中性条件下，少年是最丰富的阶段;在El Nino期间，Futcilia幼虫是最丰富的。在中性条件下，euphausiids的总丰富显着高于El Nino和La Nina期间，这表明这些异常情况引起的环境变化会因物种可能运动而导致丰富的影响。最后，在El Nino期间，euphausiid组合与其他两个条件显着不同，这表明这种情况产生的温度的增加会影响哥伦比亚太平洋地区欧酚组合的结构和组成。

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