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Redundancy and diversity of functional reef fish groups of the Mexican Eastern Pacific

机译:墨西哥东太平洋功能礁鱼群的冗余和多样性

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摘要

Coral reefs are in crisis worldwide. Fish play a key role in the resilience of reefs because most of the biomass of the ecosystem flows through them. Evidence indicates that the response to stressors will vary markedly depending on the resilience of the ecosystem. In order to assess the functional groups of reef fishes, morphometric and ecomorphological analyses were carried out on the shape and diet of 117 reef fish species from the Mexican Eastern Pacific (MEP) from 23°N to 15°N, spanning the years 2009–2012. Six trophic groups were identified and subdivided into 19 functional groups: (A) detritus and plants consumers, three morphologies; (B) plants and zoobenthos consumers, four morphologies; (C) zoobenthos consumers, two morphologies; (D) zoobenthos and zooplankton consumers, three morphologies; (E) zooplankton and nekton consumers, three morphologies; and (F) nekton consumers, four morphologies. Our main conclusions are: (i) fish communities of the MEP have a high degree of ecological redundancy; (ii) fish diversity is not related to the coral cover; and (iii) the combination of using both morphology and diet produce a more effective classification of functional groups. Future studies such as these will allow a deeper understanding of environment and it will help illuminate the effects of fish morphology and diet on population structure.
机译:全球珊瑚礁正处于危机之中。鱼在珊瑚礁的复原力中起着关键作用,因为生态系统的大部分生物量都流过它们。有证据表明,根据生态系统的弹性,对压力源的响应将显着不同。为了评估珊瑚礁鱼的功能组,对2009年以来,墨西哥东部太平洋(MEP)的23种北纬15°至117种礁鱼的形状和饮食进行了形态计量和生态形态分析。 2012。确定了六个营养组,并将其细分为19个功能组:(A)碎屑和植物消费者,三种形态; (二)植物和底栖动物的消费者,有四种形态; (C)底栖动物的消费者,两种形态; (D)底栖动物和浮游动物的消费者,三种形态; (五)浮游动物和浮游动物的三种形态; (F)nekton消费者,有四种形态。我们的主要结论是:(i)MEP的鱼类群落具有高度的生态冗余; (ii)鱼的多样性与珊瑚覆盖率无关; (iii)结合使用形态学和饮食,可以对官能团进行更有效的分类。诸如此类的未来研究将使人们对环境有更深入的了解,并将有助于阐明鱼类形态和饮食对种群结构的影响。

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