Understanding the role of abiotic and biotic factors on biological communities is a challenge for ecologists. Individuals of the order Odonata have a close connection with these factors, which can influence the establishment of each stages of live. This study evaluated the relationship between habitat complexity and limnological variables on the diversity of Libellulidae larvae and adults. Our hypotheses were that (i) limnological variables would have a greater influence than habitat complexity on larvae and (ii) habitat complexity would influence more adults. Forty-six sampling sites were evaluated in the Brazilian Amazon region. Our results indicated the effects of limnological variables and habitat complexity on both life stages, with higher influence of the first on larvae and the second on adults, mainly for species composition. The abundance of the Eichhornia azurea, which has enormous morphological plasticity, together with the presence of a range of other macrophyte species provides different habitat architectures, with more suitable microhabitats for different odonates. The habitat complexity metrics had combined effects on the larvae, presumably because of the greater availability of refuges from predators and food sources. In contrast, in the adults, the relationship with habitat complexity is associated with the availability of ovipositing sites and perches.

了解非生物和生物因素在生物群落中的作用是生态学家的一项挑战。蜻蜓目个体与这些因素有着密切的联系，这些因素可以影响生活的各个阶段的建立。这项研究评估了栖息地复杂度和Librulidae幼虫和成虫多样性的语言学变量之间的关系。我们的假设是：（i）对幼虫而言，气候变化变量的影响要大于栖息地复杂性；（ii）栖息地复杂性将影响更多的成虫。在巴西亚马逊地区评估了46个采样点。我们的结果表明，气候变量和栖息地复杂性对两个生命阶段都有影响，第一个对幼虫的影响更大，第二个对成虫的影响更大，主要是对物种组成的影响。凤眼莲（Eichhornia azurea）具有巨大的形态可塑性，再加上一系列其他大型植物的存在，提供了不同的生境结构，并为不同的齿状动物提供了更合适的微生境。栖息地复杂性指标对幼虫产生了综合影响，大概是由于来自掠食者和食物来源的避难所的可用性更高。相反，在成年人中，与栖息地复杂性的关系与产卵场所和栖息处的可用性有关。