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首页> 外文期刊>Cybium >Temporal variations in abundance and species composition of fish and epibenthic crustaceans of an intertidal zone: Environmental factor influence
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Temporal variations in abundance and species composition of fish and epibenthic crustaceans of an intertidal zone: Environmental factor influence

机译：潮间带鱼类和表皮甲壳动物的丰度和物种组成的时间变化：环境因素影响

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摘要

Fishes and epibenthic crustaceans were sampled for 1 year with a 1.5 m beam trawl in the intertidal zone of a sandy beach of the Eastern Channel. The intensity by which this intertidal zone is used by fishes and crustaceans was analyzed as well as the environmental factors influencing temporal variations in diversity, species abundance and assemblages. Between February 2005 and January 2006, 16 species were recorded. The presence of many juvenile indicated the important role played by the intertidal zone as a nursery ground. The brown shrimp Crangon crangon and O-group plaice Pleuronectes platessa are the two most abundant species of the intertidal ecosystem. Although the studied intertidal area is a multispecific nursery area, only six species had a major influence on the variation in total densities and can be considered as key species. Clear seasonal succession was observed in the species composition. The main structuring variables determining the occurrence and abundance of most of the species are water temperature, turbidity and dissolved oxygen. For some species, peak densities were observed during spring tides, suggesting selective tidal transport. Extreme winter conditions and subsequent migration of organisms to deeper water caused a decline in winter in both density and diversity.
机译：在东海峡沙滩的潮间带，用1.5 m束拖网对鱼类和表皮甲壳类动物取样1年。分析了鱼类和甲壳类使用该潮间带的强度，以及影响多样性，物种丰度和组合的时间变化的环境因素。在2005年2月至2006年1月之间，记录了16种。许多少年的到来表明潮间带作为育苗场发挥了重要作用。棕色虾Crangon虾和O型Pleuronectes platesa是潮间带生态系统中两个最丰富的物种。尽管研究的潮间带是一个多具体的育苗区，但只有六个物种对总密度的变化有重大影响，可以认为是关键物种。在物种组成中观察到明显的季节性演替。决定大多数物种的发生和丰度的主要结构变量是水温，浊度和溶解氧。对于某些物种，在春季潮汐期间观察到了峰值密度，表明有选择性的潮汐运输。极端的冬季条件以及随后生物向更深水中的迁移导致冬季密度和多样性均下降。

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