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首页> 外文期刊>Belgian Journal of Zoology >Species assemblages and habitat preferences of Ostracoda (Crustacea) in Lake Abant (Bolu, Turkey)
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Species assemblages and habitat preferences of Ostracoda (Crustacea) in Lake Abant (Bolu, Turkey)

机译：阿班特湖（土耳其博卢）的甲壳纲（甲壳纲）的物种组成和栖息地偏好

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摘要

Aquatic habitats are threatened by human activities in Turkey. These threats can lead to changes in ecological conditions and community composition of ostracod species. Overall, reduction in habitat quality may increase the number of tolerant (e.g., generalist) species in relation to the number of native (e.g., specialist) species. This phenomenon is called pseudorichness and is also characterized by a critical increase in the total numbers of colonial bacteria. A total of 16 ostracod species were encountered in Lake Abant (Bolu, Turkey) and its environs between 2001 and 2003. Two species (Psychrodromus fontinalis, Eucypris pigra) found outside the lake are new records for the region. About 80% of the species in this area have a cosmopolitan distribution throughout the Holarctic region. Four major clustering groups (UPGMA) were recognized based on species occurrences and ecological preferences. Each species was distinctly tolerant to different ecological variables though cosmopolitan species tended to have wider tolerance ranges compared to sensitive species. About 82% of the relationship between species and environmental variables was explained with Canonical Correspondence Analysis (P<0.05). Accordingly, temperature, dissolved oxygen and conductivity of water were found to be the three most influential factors affecting species composition. Spearman correlation analysis showed a significant positive relationship (P<0.01) between the number of individuals and both dissolved oxygen and the number of species. Generally, to provide long-term conservation of the Lake Abant Nature Park, immediate attention is needed for the wastewater treatment, and help from international organizations.
机译：在土耳其，水生生境受到人类活动的威胁。这些威胁会导致生态状况和成龙种类的群落组成发生变化。总体而言，栖息地质量的下降可能会增加相对于本地（例如专业）物种的耐受性（例如通才）物种的数量。这种现象称为假富集，其特征还在于殖民地细菌总数的急剧增加。 2001年至2003年之间，在阿班特湖（土耳其博卢）及其周围地区共遇到了16种兽脚类物种。在湖外发现的两种物种（Psychrodromus fontinalis，Eycypris pigra）是该地区的新记录。该地区约有80％的物种在整个Holarctic地区具有国际化分布。根据物种的发生和生态偏好，确定了四个主要的聚类组（UPGMA）。尽管与敏感物种相比，世界性物种倾向于具有更宽的耐受范围，但每个物种对不同的生态变量具有明显的耐受性。典范对应分析解释了物种与环境变量之间约82％的关系（P <0.05）。因此，发现温度，溶解氧和水的电导率是影响物种组成的三个最有影响力的因素。 Spearman相关分析显示，个体数量与溶解氧和物种数量之间存在显着正相关（P <0.01）。通常，为了长期保护阿本特湖自然公园，废水处理需要立即关注，并需要国际组织的帮助。

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