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Factors affecting habitat occupancy of fish assemblage in the Gulf of Trieste (Northern Adriatic Sea)

机译：影响的里雅斯特湾（北亚得里亚海）鱼类种群栖息地的因素

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Species composition, richness and abundance of the fish assemblage were studied over six different inshore macrohabitats in the southern part of the Gulf of Trieste (Northern Adriatic Sea) using the visual counts technique. Fifteen environmental variables were taken into consideration in order to determine microhabitat preferences of fish species, using canonical correspondence analysis and electivity indices. The results suggest that the structure of the fish assemblage in shallow habitats is affected by a large number of interplaying factors. Depth, type of bottom and vegetation cover - incorporating both abiotic and biotic variables - are some of the factors responsible for coastal fish distribution. Microhabitat preferences for 29 fish species are presented in the depth range from 0.5 to 3 m.
机译：使用视觉计数技术，在的里雅斯特湾（北亚得里亚海）南部的六个不同的近岸大型生境上研究了鱼类组成的种类组成，丰富度和丰富度。使用规范对应分析和选择性指数，考虑了15个环境变量，以确定鱼类的微生境偏好。结果表明，浅水生境中鱼群的结构受到大量相互作用因素的影响。深度，底部类型和植被覆盖-兼顾非生物和生物变量-是造成沿海鱼类分布的一些因素。在深度范围从0.5到3 m的范围内，对29种鱼类的微生境偏好有所体现。

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