Latorre-Beltrán Ivonne T, Novelo-Gutiérrez Rodolfo, Favila Mario E
Rev Biol Trop. 2014 Apr;62 Suppl 2:97-110.
Trichopterans are considered an important and diverse biotic element in continental aquatic ecosystems. The purpose of this study was to evaluate the assemblages of the order Trichoptera in two subwatersheds with a gradient of disturbance. Four sampling events were conducted in two subwatersheds in the Eastern Mountain Range of the Colombian Andes. For the analysis we used rarefaction curves, Bray-Curtis Index and Partitioning Diversity and total richness and Shannon's diversity as metrics. Although total richness was similar between both subwatersheds, abundance was always highest in streams within the conserved subwatershed. Each subwatershed was dominated by different genera, except Ochrotrichia, which was abundant at all sites. Alpha diversity was similar among streams in the conserved watershed, while a reduction in diversity potentially associated with the disturbance gradient was observed in streams of the disturbed subwatershed. Beta diversity (0Dbeta and 1Dbeta) between subwatersheds and among conserved streams was similar, while in disturbed streams a similar gradient to that of alpha diversity was found. The similitude analysis clustered streams according to their conservation status. Differences found in trichopteran assemblages do confirm that the use of their attributes is adequate to assess the conservation status of stream ecosystems. Rev. Biol. Trop. 62 (Suppl. 2): 97-110. Epub 2014 April 01.
毛翅目昆虫被认为是大陆水生生态系统中一个重要且多样的生物元素。本研究的目的是评估在两个具有干扰梯度的子流域中毛翅目昆虫的群落。在哥伦比亚安第斯山脉东部山脉的两个子流域进行了四次采样活动。为了进行分析，我们使用了稀疏曲线、布雷-柯蒂斯指数、多样性划分以及总丰富度和香农多样性作为指标。尽管两个子流域的总丰富度相似，但在受保护子流域内的溪流中丰度始终最高。除了 Ochrotrichia 在所有地点都很丰富外，每个子流域都由不同的属主导。受保护流域内溪流的阿尔法多样性相似，而在受干扰子流域的溪流中观察到多样性可能与干扰梯度相关的降低。子流域之间以及受保护溪流之间的贝塔多样性（0Dbeta 和 1Dbeta）相似，而在受干扰的溪流中发现了与阿尔法多样性相似的梯度。相似性分析根据溪流的保护状况对其进行了聚类。在毛翅目昆虫群落中发现的差异确实证实了利用它们的属性足以评估溪流生态系统的保护状况。《热带生物学评论》62（增刊 2）：97 - 110。2014 年 4 月 1 日在线发表。
