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首页> 外文期刊>Journal of Insect Conservation >Nestedness-patterns of Odonata assemblages in artificial and natural aquatic habitats reveal the potential role of drinking troughs for aquatic insect conservation
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Nestedness-patterns of Odonata assemblages in artificial and natural aquatic habitats reveal the potential role of drinking troughs for aquatic insect conservation

机译：人工和天然水生栖息地的Odonata组件的嵌套模式揭示了饮酒潜伏期昆虫保护的潜在作用

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Nestedness patterns including both artificial and natural habitat may represent evidence of such habitats' importance in community assembly and conservation of animals inhabiting those sites. Odonata often colonize drinking troughs (artificial water reservoirs) and thus they are good study models as umbrella species. We investigated if a network of artificial (troughs) and natural (pools) aquatic habitats could create a nested subset pattern for Odonata assemblages. We surveyed all the troughs present in the Castelporziano Estate (Italy, Lazio). Odonata larvae have been collected and identified. Data of a previous paper on 18 natural pools and ponds, and our samplings of 16 troughs were organized into a presence-absence matrix. The Odonata assemblage within natural and artificial habitats is significantly nested with both NODF and T metrics. Odonata species found in the troughs represented 40% of the total species pool. Some troughs interspersed with the natural pools in the nested order: eight troughs were richer in species than some natural pools, despite the big difference in surface area. Pristine water bodies and their area may not represent major constraints for species to oviposit and for larvae to grow. Drinking troughs can be highly relevant for representing refuges in the absence or decline of natural ponds and pools: lacking in top-predators (fishes), they are small "island" habitats that support the generations of Odonata (or other aquatic macroinvertebrates) during dry periods of natural water bodies. The use and focused management of such habitats can be an effective practice for freshwater ecosystems management and Odonata conservation.
机译：包括人造和自然栖息地的嵌套模式可能代表了居住在社区大会和居住地点的动物保护中的栖息地的证据。 Odonata经常殖民饮酒槽（人造水库），因此它们是伞形物种的良好学习模型。我们调查了人工（槽）和自然（池）水生栖息地的网络可以为Odonata组装创建嵌套的子集模式。我们调查了Castelziano Estate（意大利，拉齐奥）的所有低谷。 odonata幼虫被收集并确定。 18个天然池和池塘的前一篇论文的数据，并组织了16个槽的样品被组织成存在缺勤矩阵。天然和人工栖息地内的odonata集会与Nodf和T度量有关。低谷中发现的Odonata种类占总物种池的40％。一些低谷穿插着嵌套订单中的天然池：尽管表面积大的差异，但物种的八个小槽比某些天然游泳池更丰富。原始水体及其区域可能不代表物种对产卵和幼虫生长的主要约束。饮酒槽可以对自然池塘和游泳池的缺失或衰落中的代表避难所高度相关：缺乏顶级捕食者（鱼类），它们是在干燥期间支持几代odonata（或其他水生门晶体）的“岛屿”栖息地天然水域的时期。这种栖息地的使用和焦点管理可以是淡水生态系统管理和odonata保护的有效实践。

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