Abstract Wetlands are ecosystems with great ecological value due to their extraordinary biodiversity and the ecosystem services they provide. Saline wetlands have specific biological attributes and conservation significance because of the particular fauna they hold. In this study, we analyzed invertebrate assemblages, the conservation state, and environmental quality of the Desaguadero-Salinas del Bebedero Wetlands, in a RAMSAR site of central Argentina. Samples of water for physical-chemical analysis and aquatic invertebrates were taken at seven sites. A Simplified Index of Water Quality (SIWQ) and the Index of Conservation State of Lentic Somers Ecosystems (CSLSE) were applied. Forty-four invertebrate taxa were identified in a community characterized by low diversity, and high abundance of salinity tolerant groups. Some invertebrate metrics showed strong associations with concentrations of majoritarian ions in water, CSLSE and SIWQ. Five invertebrate metrics of richness and diversity, three of assemblage composition and three related to feeding groups displayed the best performance in explaining significant differences among sites. These results reinforce the use of biological assessments of human impacts in saline water bodies. They also enhance the knowledge of wetlands of arid regions, extremely fragile habitats that should be deeply studied and understood at a global scale.

中文翻译：

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干旱环境咸水湿地水生无脊椎动物组合与环境质量的关系

摘要 湿地具有非凡的生物多样性和提供的生态系统服务，是具有巨大生态价值的生态系统。盐碱地具有特定的生物属性和保护意义，因为它们拥有特定的动物群。在这项研究中，我们分析了阿根廷中部 RAMSAR 遗址的 Desaguadero-Salinas del Bebedero 湿地的无脊椎动物组合、保护状态和环境质量。在七个地点采集了用于物理化学分析的水样和水生无脊椎动物样品。应用了简化的水质指数 (SIWQ) 和 Lentic Somers 生态系统保护状态指数 (CSLSE)。在一个以低多样性和高丰度耐盐群体为特征的群落中发现了 44 个无脊椎动物类群。一些无脊椎动物指标显示出与水中多数离子浓度、CSLSE 和 SIWQ 的强烈关联。五个无脊椎动物的丰富度和多样性指标、三个组合组成指标和三个与饲养群相关的指标在解释站点之间的显着差异方面表现最佳。这些结果加强了对人类对咸水体影响的生物学评估的使用。它们还增强了对干旱地区湿地的了解，这是应该在全球范围内深入研究和了解的极其脆弱的栖息地。三个组合组成和三个与饲养组相关的在解释站点之间的显着差异方面表现最佳。这些结果加强了对人类对咸水体影响的生物学评估的使用。它们还增强了对干旱地区湿地的了解，这是应该在全球范围内深入研究和了解的极其脆弱的栖息地。组合组成中的三个和与饲养组相关的三个在解释站点之间的显着差异方面表现最佳。这些结果加强了对人类对咸水体影响的生物学评估的使用。它们还增强了对干旱地区湿地的了解，这是应该在全球范围内深入研究和了解的极其脆弱的栖息地。