To outline influence of anthropogenic activities on natural aquatic habitats such as wetlands, we sampled ostracods along with measuring several different aquatic variables at four different aquatic bodies between 2019 and 2020 in the Hıdırşeyhler Village (Bolu, Turkey). We found 15 living and 10 subfossil ostracods. Species with high tolerances (Eucypris virens) and/or with swimming abilities (Cypria ophtalmica) were reported from the canal and wetland. Non-swimmer ostracods (e.g., Prionocypris zenkeri) were only found from the creek. Ostracod Watch Model illustrated some species with stenochronal and eurychronal (e.g., Heterocypris incongruens) occurrences per site. CCA results displayed that water temperature and electrical conductivity were the most important explanatory variables on species. Unbiased diversity indices revealed the highest diversity in the canal followed by the creek, wetland, and trough. Wetland diversity exhibited positive and negative correlations with the canal and the creek, respectively. Tukey’s pairwise test supported the significant comparisons between the trough, canal, and wetland (p < 0.01). The ratio of tolerant species per station was slightly higher in the canal than the wetland, trough, and creek. This suggests the fact that species encountered from the creek seem to be habitat specific and may be considered more vulnerable to changes in aquatic conditions. Frequency of species encountered in three habitats (wetland, canal, and trough) was significantly changed after the construction (digging and converting the wetland) activities began in August 2019. This activity was a negative impact on species diversity and richness in the wetland area where the diversity sharply dropped down and did not recover during the study. In contrast, this was probably advantage for some cosmoecious species.

为了概述人为活动对湿地等自然水生栖息地的影响，我们在 2019 年至 2020 年期间在 Hıdırşeyhler 村（土耳其博卢）的四个不同水体中对介形虫进行了采样，并测量了几个不同的水生变量。我们发现了 15 只活介形虫和 10 只亚化石介形虫。从运河和湿地报告了具有高耐受性（Eucypris virens）和/或具有游泳能力（Cypria ophtalmica ）的物种。非游泳介形虫（例如，Prionocypris zenkeri）仅在小溪中发现。Ostracod 观察模型说明了一些具有 stenochronal 和 eurychronal 的物种（例如，Heterocypris incongruens) 每个站点的发生次数。CCA结果表明，水温和电导率是物种最重要的解释变量。无偏多样性指数显示运河中的多样性最高，其次是小溪、湿地和水槽。湿地多样性分别与运河和小溪呈正相关和负相关。Tukey 的成对检验支持槽、运河和湿地之间的显着比较 ( p < 0.01)。运河中每个站的耐受物种比例略高于湿地、槽和溪流。这表明从小溪遇到的物种似乎是特定栖息地的，并且可能被认为更容易受到水生条件变化的影响。自 2019 年 8 月开始建设（挖掘和改造湿地）活动后，在三个栖息地（湿地、运河和水槽）中遇到的物种频率发生了显着变化。该活动对湿地的物种多样性和丰富度产生了负面影响。多样性急剧下降并且在研究期间没有恢复。相比之下，这可能是一些宇宙物种的优势。