University of 8 May 1945 Guelma, Faculty of Sciences of Nature and Life and Sciences of the Earth and Universe - SNV-STU, Laboratoire de Biologie, Eau et Environnement, Guelma, Algeria.
Badji Mokhtar University, Faculty of Sciences, Bio Surveillance Environmental Laboratory, Annaba, Algeria.
Braz J Biol. 2024 Mar 22;84:e273662. doi: 10.1590/1519-6984.273662. eCollection 2024.
Benthic macroinvertebrates are integral parts of inland waters, inhabiting a diversity of aquatic ecosystems where communities are spatially structured. Macroinvertebrates of some Mediterranean regions such as North Africa are still not well studied. Due this reason we proposed study the community structure in water bodies located in Northeastern Algeria. For this objective, we sampled 12 different kind of water bodies, two dams, three rivers, and seven streams during the period from October 2020 to September 2021. To biotic and abiotic data, a redundancy analysis (RDA) was applied with the aim of determine the role of both kind of variables for grouping the sites. Also, two types of Null models were considered: species co-occurrence and niche sharing for study the potential associations between species reported. Redundancy analysis showed that water velocity and conductivity were the main drivers of community structure of macroinvertebrates. The species co-occurrence results reveal that species associations are ramdom, except for two sites: El fadjoudj and Ain ben baida corresponding to Seybouse river. At the same time, there is no niche sharing and in consequence, there is no interspecific competition except in the two sites: Salah Salah Salah stream and Bouhamdane dam. The results revealed similarities with other similar studies for Algerian rivers and dams, and with other similar water bodies with Mediterranean climate.
底栖大型无脊椎动物是内陆水域的重要组成部分，栖息在各种水生生态系统中，这些社区在空间上是有结构的。北非等一些地中海地区的大型无脊椎动物仍未得到充分研究。由于这个原因，我们提出研究位于阿尔及利亚东北部的水体中的群落结构。为此，我们在 2020 年 10 月至 2021 年 9 月期间采集了 12 种不同类型的水体，包括两个水坝、三条河流和七条溪流。为了获得生物和非生物数据，我们应用了冗余分析（RDA），目的是确定这两种变量对分组站点的作用。此外，还考虑了两种类型的零模型：物种共存和生态位共享，以研究报告物种之间的潜在关联。冗余分析表明，水速和电导率是大型无脊椎动物群落结构的主要驱动因素。物种共存的结果表明，物种之间的关联是随机的，除了两个地点：El fadjoudj 和 Ain ben baida，它们对应于 Seybouse 河。同时，没有生态位共享，因此，除了两个地点：Salah Salah Salah 溪流和 Bouhamdane 水坝，没有种间竞争。结果与阿尔及利亚河流和水坝的其他类似研究以及具有地中海气候的其他类似水体的结果相似。
