We investigated the environmental factors influencing Nepomorpha and Gerromorpha in lentic, highly vegetated habitats from the Danube Delta. We collected 7032 individuals from 12 species from 23 habitats over 6 months. Separate multivariate analyses were conducted on the entire species dataset and separately on aquatic and semiaquatic species. Statistical analyses showed that aquatic and semiaquatic true bugs are influenced by different sets of environmental variables. Hydromorphological factors are most important in influencing communities of aquatic species, whereas aquatic plant species most strongly influence communities of semiaquatic species. Thus, including closely related taxa in a wider, more general analysis might lead to biased and/or distorted conclusions, and detailed analysis of the different related taxa is recommended to establish whether they do not represent distinct communities.

我们调查了多瑙河三角洲片状，高植被生境中影响亚纲和Gerromorpha的环境因素。我们在6个月内从23个栖息地的12种物种中收集了7032个人。对整个物种数据集以及水生和半水生物种分别进行了多元分析。统计分析表明，水生和半水生真虫受到不同环境变量集的影响。水形态学因素在影响水生物种群落中最重要，而水生植物物种对半水生物种群落的影响最大。因此，在更广泛，更笼统的分析中包含紧密相关的分类单元可能会导致结论有偏见和/或失真，