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外文期刊>Revista de Biología Tropical
>Community structure of coral reef zooplankton in Isla del Coco National Park, a natural World Heritage site in the Eastern Tropical Pacific
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Community structure of coral reef zooplankton in Isla del Coco National Park, a natural World Heritage site in the Eastern Tropical Pacific
Introduction: Zooplankton is a major link between primary producers and the following trophiclevels, and in coral reefs they represent an energy source for corals and involve complex assemblies integrating awide variety of species form different functional groups. Objective: To define interannual changes in zooplankton assemblies in coral reefs of Isla del Coco. Methods: Three coral reefs system were sampled. Two or threesamples were taken by surface horizontal trawls in each coral reef from 2009 to 2012, using conical zooplanktonnets of 200 and 500 μm mesh sizes at different times of the day. Physical and chemical variables were measuredbefore zooplankton sampling. Results: We identified 24 taxonomic groups of macrozooplankton and 22 ofmesozooplankton. Copepods were the most abundant taxa (87.1%) of the total abundance of mesozooplanktonand macrozooplakton (58.9%); however, chaetognaths (35.6%) exceeded copepods (35.4%) in abundance inmacrozooplankton samples during 2011. Mesozooplankton samples showed higher abundance (68753.2±9123.2ind m-3) and biomass (85.14±11.3 mg DW m-3) than macrozooplankton samples (4454.9±751.0 ind m-3,22.8±3.8 mg DW m-3). The interannual macrozooplankton community structure did not change significantly(ANOVA, p=0.368), but did change for mesozooplankton (ANOVA, p=0.001). Variations in physical and chemical variables influenced the community structure for both meso and macrozooplankton, increasing or decreasingorganism abundance. Conclusions: Coral reef zooplankton of Isla del Coco resembles that of other coral reefsunder the influence of oceanic conditions, with a fauna formed mainly by calanoid copepods, chaetognathsand appendicularians, and depending on oceanographic conditions, the abundance of these groups can change.
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机译：介绍：Zooplankton是初级生产者和以下Trophiclevels之间的主要联系，并且在珊瑚礁中，它们代表了珊瑚的能源，并涉及整合物种各种形式的复杂组件形成不同的官能团。目的：在伊斯兰德尔可县珊瑚礁中定义浮游动物组件的际变化。方法：采样三个珊瑚礁系统。从2009年至2012年的每个珊瑚礁中的表面水平拖网采用了两种或三分气象，在一天的不同时间使用200和500μm的圆形尺寸的锥形Zooplanktonnet。测量物理和化学变量是浮游动物的测量。结果：我们确定了24个分类群宏中和22个ofmesozooplankton。 CopePods是Mesozooplanktonand Macrozoplakton总丰富的最丰富的分类群（87.1％）（58.9％）;然而，2011年，Chaetognaths（35.6％）超过了丰富的桡足类（35.4％）在2011年的丰富Inmacrozooplankton样品.Mesozooplankton样品显示出高度丰度（68753.2±9123.2 ind m-3）和生物量（85.14±11.3mg dw m-3），而不是macrozooplankton样品（ 4454.9±751.0 ind m-3,22.8±3.8 mg dw m-3）。营业宏子群落社区结构没有显着变化（ANOVA，P = 0.368），但Mesoplankton（ANOVA，P = 0.001）的变化。物理和化学变量的变化影响了中索和宏中的社区结构，增加或减少丰富。结论：珊瑚礁欧虫卓克兰·伊斯兰德雷斯·罗克斯顿类似于海洋状况影响的珊瑚礁，主要由Calanoid Copepods，Chaetognathsand阑尾师组成的动物，以及根据海洋学条件，这些群体的丰富可以改变。
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