Community structure and distribution of Ephemeroptera and Plecoptera larvae in lowland karst rivers in Slovenia
Community structure and distribution of Ephemeroptera and Plecoptera larvae in lowland karst rivers in Slovenia
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DOI：
10.1080/01650420902811919
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发表时间：
2009-01-01
期刊：
影响因子：
0.8
通讯作者：
Sivec, Ignac
中科院分区：
文献类型：
--
作者：
Hrovat, Mojca;Urbanic, Gorazd;Sivec, Ignac
调查了低地喀斯特河流中蚂蚁和石蝇幼虫的群落组成。2005年1月至12月，采用多栖息地方法采集了49个底栖生物样本。环境变量大约以每月一次的间隔进行测量。共记录到蚂蚁26种(20种)和石蝇17种(13种)。常见种8种，稀有种16种。仅罗丹尼巴氏巴蒂斯和点火埃菲梅氏菌在所有地点发生频率较高。不同采样点在多样性和丰富度指标上存在显著差异，但在丰度和群落指数值上差异不显著。组合之间的空间和季节差异由NMS确定。采用典型对应NICE分析方法，研究了棉铃虫和石蝇的群落结构与季节变化的环境因子的关系。棉铃虫和石蝇幼虫的种类分布与电导率、硝酸盐浓度和溶解氧浓度所代表的富营养化梯度相关性最好。
Mayfly and stonefly larval community compositions were investigated in lowland karst rivers. From January to December 2005, 49 benthos samples were taken using a multi-habitat, approach. Environmental variables were measured in about monthly intervals. Altogether, 26 mayfly taxa (20 species) and 17 stonefly taxa (13 species) were recorded. Eight species were common, whereas 16 taxa were rare. Only Baetis rhodani and Ephemerella ignita occurred frequently at all sites. Significant differences were observed among sampling sites in diversity and richness metrics but neither in abundance nor in values of index of biocenotic regions. Spatial and seasonal differences amongst assemblages were determined by NMS. The relationship between mayfly and stonefly assemblage structure and seasonally varied environmental factors were investigated using canonical correspondence nice analysis (CCA). Mayfly and stonefly larval taxa distribution was best correlated to an eutrophication gradient represented by conductivity, nitrate concentration and dissolved oxygen concentration.