ABSTRACT Forests create harbour different soil mite communities due to their high spatial heterogeneity, within which microhabitats become biodiversity hotspots or refugia. This study aimed to characterize and contrast the mesostigmatid mite communities in the vicinity of two such microhabitats: growing trees and decayed clear-cut stumps in comparison to the general soil matrix. Studies were conducted in mature, managed oak (Quercus robur L.) Experimental Forests near Kórnik (Central Poland). Samples of soil with litter were collected from three forest floor microhabitats: near stumps (distance<10 cm), near growing trees (distance<10 cm), and the soil matrix (distance from tree or stump >3 m). Soil environment was characterized by bulk density, actual soil moisture, pH of soil and litter, total carbon and nitrogen, C to N ratio, and soil organic matter. Mite abundance was greatest in soil near growing trees, and was also affected by bulk density and soil pH. Soil characteristics affected neither species richness nor diversity. Species richness was the highest near stump (30 species), but similar richness occurred near (25) and away (26) from growing trees (25). Overall, both living trees and stumps harboured a different community compared to the soil matrix and living trees especially maintain populations of soil mites in oak forests.

中文翻译：

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成熟橡树附近的土壤是管理森林中土螨（Acari、Mesostigmata）的避难所

摘要 森林因其高度的空间异质性而创造了不同的土壤螨群落，其中的微生境成为生物多样性的热点或避难所。本研究旨在表征和对比两个这样的微生境附近的中尾螨群落：与一般土壤基质相比，生长的树木和腐烂的清晰树桩。研究是在 Kórnik（波兰中部）附近的成熟管理橡树 (Quercus robur L.) 实验森林中进行的。从三个森林地面微生境收集带有凋落物的土壤样本：靠近树桩（距离<10 cm）、靠近生长的树木（距离<10 cm）和土壤基质（距离树木或树桩的距离 >3 m）。土壤环境的特征包括容重、实际土壤水分、土壤和凋落物的 pH 值、总碳和氮、碳氮比、和土壤有机质。生长树木附近的土壤中螨虫的丰度最大，并且还受容重和土壤 pH 值的影响。土壤特征既不影响物种丰富度也不影响多样性。树桩附近的物种丰富度最高（30 种），但相似的丰富度发生在靠近（25 个）和远离（26 个）正在生长的树木（25 个）处。总体而言，与土壤基质相比，活树和树桩拥有不同的群落，活树尤其是在橡树林中维持土壤螨的数量。