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首页> 外文期刊>Limnology >Distribution, ecological tolerance and optimum levels of freshwater Ostracoda (Crustacea) from Diyarbakır, Turkey
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Distribution, ecological tolerance and optimum levels of freshwater Ostracoda (Crustacea) from Diyarbakır, Turkey

机译：土耳其Diyarbakır淡水Ostracoda（甲壳纲）的分布，生态耐受性和最佳水平

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摘要

A total of 23 ostracod taxa were found in 48 of 90 different water bodies (wetlands, springs, lakes, creeks, etc.) located at moderate to high elevation (530–1,095 m) in Diyarbakır province. The ecological tolerances and optimum values for environmental variables of 15 species were analyzed. Accordingly, maximum numbers of species were found between 700 and 800 m. Ostracod species and sampling sites along with seven environmental variables were ordinated with canonical correspondence analysis (CCA). The first axis of CCA explained 72% of the relationship between species and environmental variables. Of these, water temperature, redox potential and altitude were the most influential (P 0.05) factors for species. Based on habitat similarities, an unweighted pair group mean average dendrogram divided species into four clustering groups. Among the species, Potamocypris arcuata, Candona neglecta and Psychrodromus fontinalis had the highest optimum estimates for altitude, whereas P. arcuata, Herpetocypris brevicaudata and P. fontinalis exhibited the highest tolerances to altitude. While most species revealed unique tolerances and optimum values for different ecological variables, species with cosmopolitan characteristics had wider ranges of ecological tolerances and distribution amid the variety of habitats along elevational gradients.
机译：在迪亚巴克尔省中度至高海拔（530–1,095 m）的90个不同水域（湿地，泉水，湖泊，小河等）中，有48个共发现23种兽类类群。分析了15个物种的生态耐受性和环境变量的最佳值。因此，发现的最大物种数量在700至800 m之间。规范标准对应分析（CCA）对虫种类和采样地点以及七个环境变量进行了协调。 CCA的第一个轴解释了物种与环境变量之间72％的关系。其中，水温，氧化还原电势和海拔高度是影响物种的最主要因素（P <0.05）。根据栖息地的相似性，一个非加权对组平均树状图将物种划分为四个聚类组。在该物种中，最高的Potamocypris arcuata，Candona neglecta和Psychrodromus fontinalis的高度最佳估计值，而最高的P. arcuata，Bervicypris brevicaudata和P. fontinalis对高度的耐受性最高。虽然大多数物种对不同的生态变量显示出独特的耐受性和最佳值，但具有世界性特征的物种在各种海拔梯度生境中的生态耐受性和分布范围更广。

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