Romanian Academy, Institute of Biology Bucharest, Department of Ecology, Taxonomy and Nature Conservation, street Splaiul Independenţei, no. 296, Bucharest, Romania.
Research Centre for Ecological Services (CESEC), Faculty of Biology, University of Bucharest, Bucharest, Romania.
Sci Rep. 2019 Dec 27;9(1):20250. doi: 10.1038/s41598-019-56700-8.
An anthropic ecosystem from Romania was investigated from acarological, vegetation and chemical point of view. The community structures of two groups of mites were studied (Acari: Mesostigmata, Oribatida) from a tailing pond, using transect method, in correlation with concentrations of heavy metals (As, Cu, Pb, Ni, Mn and Zn), with abiotic factors (altitude, aspect, soil temperature, soil humidity, soil pH) and biotic factor (vegetation coverage). Taking into account the mite communities, in total, 30 mite species were identified, with 1009 individuals and 18 immatures (10 species with 59 individuals, 5 immatures of Mesostigmata and 20 species with 950 individuals, 13 immatures of Oribatida). The investigated habitats from the tailing pond were grouped in five transects, with different degree of pollution, based on total metal loads. Taking into account of the connection between mites communities, abiotic factors and heavy metals, each transect were characterized through specific relationship. Using multivariate statistical analysis, we revealed that the occurrence of some Oribatida species was strongly correlated with vegetation coverage, soil pH and soil humidity, though concentrations of Cu, As, Mn, Ni and Zn also had an influence. Pb and Zn concentrations were shown to influence the occurrence of Mesostigmata mites. The heterogeneity of mites species richness at 2 m scale was correlated with a metric related to the heterogeneity of heavy metals at the same scale.
从节肢动物学、植被和化学角度研究了罗马尼亚的一个人为生态系统。采用样线法研究了尾矿池两组螨类（节肢动物：中气门目、甲螨目）的群落结构，与重金属浓度（As、Cu、Pb、Ni、Mn 和 Zn）、非生物因素（海拔、方位、土壤温度、土壤湿度、土壤 pH 值）和生物因素（植被覆盖率）相关。考虑到螨类群落，共鉴定出 30 种螨类，有 1009 个个体和 18 个若虫（10 种 59 个个体，5 个若虫的中气门目和 20 种 950 个个体，13 个若虫的甲螨目）。根据总金属负荷，将尾矿池的调查栖息地分为五个样线，污染程度不同。考虑到螨类群落、非生物因素和重金属之间的联系，每个样线都有特定的关系特征。通过多元统计分析，我们发现一些甲螨种的发生与植被覆盖率、土壤 pH 值和土壤湿度密切相关，尽管 Cu、As、Mn、Ni 和 Zn 的浓度也有影响。Pb 和 Zn 浓度被证明会影响中气门目螨类的发生。2m 尺度上螨类物种丰富度的异质性与同一尺度上重金属异质性的度量值相关。
