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首页> 外文期刊>Estuarine Coastal and Shelf Science >Functional diversity in European estuaries: Relating the composition of fish assemblages to the abiotic environment
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Functional diversity in European estuaries: Relating the composition of fish assemblages to the abiotic environment

机译：欧洲河口的功能多样性：将鱼类组合的组成与非生物环境相关联

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摘要

Based on a large standardised data set, the present study proposed a meta-analysis to describe general patterns in the functional diversity of estuarine fish assemblage in terms of both number of species and density along the European Atlantic coast. Fish species collected from 31 European estuaries from Portugal to Scotland were allocated to functional groups according to their ecological utilization of estuaries. A clustering analysis was performed to compare the overall functional structure of estuaries based on fish composition. Generalised linear models were computed to identify relationships between large-scale abiotic and intra-estuarine descriptors and functional attributes of estuarine fish assemblages. The total number of species, and more especially of marine species, was higher in larger estuaries with a wide entrance and, locally, in polyhaline waters. The total density was mainly related to the proportion of intertidal mudflats and, locally, was greater in mesohaline waters. In terms of relative density, northern systems were dominated by marine and catadromous species, while estuarine species were prevalent in the southern ones.
机译：基于大型标准化数据集，本研究提出了一项荟萃分析，以从欧洲大西洋沿岸的物种数量和密度两方面描述河口鱼类组合功能多样性的一般模式。从葡萄牙到苏格兰的31个欧洲河口收集的鱼类物种根据其河口的生态利用进行了划分。进行了聚类分析，以根据鱼类成分比较河口的总体功能结构。计算广义线性模型以识别大型非生物和河口内描述子与河口鱼类组合的功能属性之间的关系。在具有宽阔入口的较大河口以及在本地多卤水域中，物种总数，尤其是海洋物种总数更高。总密度主要与潮间带滩涂的比例有关，局部上在中卤水域更大。就相对密度而言，北部的系统以海洋和浮游生物为主，而河口的物种在南部占主导。

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