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首页> 外文期刊>Mediterranean Marine Science >Aspects on the seasonal dynamics and the vertical distribution of the crustacean zooplankton community and the Dreissena polymorpha larvae in Lake Trichonis
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Aspects on the seasonal dynamics and the vertical distribution of the crustacean zooplankton community and the Dreissena polymorpha larvae in Lake Trichonis

机译:Trichonis湖中甲壳类浮游动物群落和多形藻(Dreissena polymorpha)幼虫的季节动态和垂直分布的方面

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In Lake Trichonis 9 crustacea species and the molluscan larvae of Dreissena polymorpha were recorded during four seasonal samplings from summer 2002 to spring 2003. Mean integrated values of crustacea abundance ranged from 4.5 to 12.9 ind/L and were mainly dominated by the calanoida Eudiaptomus drieschi . The abundance values recorded, as well as the seasonal dynamics, followed the monoacmic pattern of oligotrophic lakes. However, the presence of Daphnia cucullata , a typical representative of eutrophic lakes, the decrease of the calanoida participation in the crustacea community and the succession in the cladocera community, could probably indicate a tendency towards a change of the trophic condition of Lake Trichonis.Along the vertical axis the maximum abundance of the zooplankton community was recorded in the surface 0-10 m. Mollusca larvae were present in all seasons and their highest abundance was recorded in the surface layer 0-10 m. Temperature, competition and predation seemed to be the main factors regulating vertical distribution.
机译:在2002年夏季至2003年春季的四个季节采样中,记录了Trichonis湖中的9种甲壳动物和多形果蝇的软体动物幼虫。甲壳动物丰度的平均积分值范围为4.5至12.9 ind / L,主要以the龙Eudaaptomus drieschi为主。记录的丰度值以及季节动态遵循贫营养湖泊的单峰模式。然而,富营养化湖泊的典型代表-水蚤(Daphnia cucullata)的存在,甲壳纲生物中Calanoida参与的减少以及cladocera群落的演替可能可能表明了Trichonis湖营养状况的变化趋势。垂直轴记录了浮游生物群落最大丰度在0-10 m表面。软体动物幼虫在所有季节都存在,其最高丰度记录在表层0-10 m。温度,竞争和捕食似乎是调节垂直分布的主要因素。

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