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Spatial variation in assemblages of Odonata (Insecta) within habitat gradients in large, pristine peat bogs in Belarus
Biologia ( IF 1.5 ) Pub Date : 2020-07-27 , DOI: 10.2478/s11756-020-00558-z
Gennadi Sushko

The variation in environmental conditions in peat bogs can be expressed by odonate assemblage composition among habitats or by differences in species richness, abundance and diversity among study sites in a regional context. The adult Odonata of large, pristine peat bogs in Belarus were examined. Adult Odonata were counted along fixed transects in main peat bog habitats under favorable weather conditions. The odonate diversity showed clear differences, affected by distance to the water body, wind speed, and bog water level. The highest diversity was recorded along lakeshores. This study detected distinct odonate assemblage variations among habitats such as lagg zones, lakeshores and hollows. The large areas occupied by pine bogs and open bogs had a very similar species composition and lower diversity. On the other hand, the Shannon diversity index (H′ = 1.433–2.295) and Pielou’s evenness index (J’ = 0.468–0.507) values were relatively high compared to those of terrestrial insects. The main differences among adult odonate assemblages were driven by cold-adapted, highly specialized species such as Leucorrhinia albifrons, Leucorrhinia dubia, Sympetrum danae and two abundant generalist species such as Sympetrum sanguineum and Sympetrum vulgatum. Peat bog specialists are among the most rapidly declining insects and, therefore, relatively intact Belarusian peat bogs are refuges for many threatened species and have considerable conservation potential.



中文翻译:

白俄罗斯大型原始泥炭沼泽栖息地梯度内的昆虫纲(昆虫纲)组合的空间变化

泥炭沼泽中环境条件的变化可以通过栖息地之间的碘酸盐组合组成来表示,也可以通过区域背景下研究地点之间物种丰富度,丰度和多样性的差异来表示。在白俄罗斯,对大型原始泥炭沼泽的成年Odonata进行了检查。在有利的天气条件下,在主要的泥炭沼泽生境中沿着固定的样条计数成年的Odonata。乌头酸盐的多样性表现出明显的差异,受距水体距离,风速和沼泽水位的影响。沿湖岸记录的多样性最高。这项研究发现了生境(例如落后地区,湖岸和中空地区)之间明显的卵酸盐组合变化。松树沼泽和裸露沼泽所占的大面积物种组成非常相似,多样性较低。另一方面,与陆地昆虫相比,香农多样性指数(H'= 1.433–2.295)和彼鲁氏均匀度指数(J'= 0.468–0.507)的值相对较高。成年卵形组合之间的主要差异是由冷适应的高度专业化物种造成的,例如白化白化病,白化白化病,丹毒和两个丰富的通才种,如血缘Sympetrum sanguineumSypetrum vulgatum。泥炭沼泽专家是下降最快的昆虫之一,因此,相对完整的白俄罗斯泥炭沼泽是许多濒危物种的避难所,具有很大的保护潜力。

更新日期:2020-07-27
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