干旱的安第斯山脉中部(阿根廷西北部)水生生境类型之间的大型无脊椎动物组合变化

IF 2.6 3区 环境科学与生态学 Q2 ECOLOGY Journal of Arid Environments Pub Date : 2024-10-09 DOI:10.1016/j.jaridenv.2024.105266
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引用次数: 0

摘要

安第斯大型无脊椎动物的多样性、生境关联和营养结构。中安第斯山脉因其复杂的地形、海拔梯度和山脉走向而拥有全球独一无二的物种。阿根廷的普纳和高安第斯生态区是中安第斯山脉的一部分,也是世界上最干旱的地区之一。尽管稀缺的安第斯水生生态系统对生物多样性的重要性已得到公认,但人们对其无脊椎动物群的了解仍然有限。本研究旨在确定与高海拔环境中不同类型水体及其水质特征相关的底栖大型无脊椎动物多样性。根据水流特征定义了四种水生生境类型:河流和溪流(RS,lotic)、泥炭地(P,最小水流)、浅咸池(SSP,lentic)和浅咸泻湖(L,lentic)。水生生境类型之间的电导率(EC)和溶解氧(DO)存在显著差异。登记了 95 个类群和 4 个门类:节肢动物门、线虫动物门、软体动物门和无脊椎动物门。昆虫类占节肢动物总丰富度的 83%,以双翅目为主,有 47 个类群,其次是鞘翅目和蜉蝣目。水流、溶解氧和导电率可解释丰富度。不同水生生境类型的分类组成各不相同。采集-采集者和捕食者占优势,表明它们依赖于岸边植被和水草。
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Macroinvertebrate assemblage variations among aquatic habitat types across the arid Central Andes (Northwest Argentina)
Andean macroinvertebrate diversity, habitat association and trophic structure. The Central Andes harbour globally unique species due to its complex topography, altitude gradients, and mountain orientations. Puna and High-Andean ecoregions of Argentina, part of the Central Andes, are among the world's driest areas. Despite the recognized importance for biodiversity of the scarce Andean aquatic ecosystems, knowledge about their invertebrate fauna remains limited. The objective of this study was to identify the benthic macroinvertebrate diversity associated with the diverse types of water bodies and their water quality characteristics in high altitude environments. Four aquatic habitat types were defined based on characteristics of their water flow: rivers and streams (RS, lotic), peatlands (P, minimum current flow), shallow salty pool (SSP, lentic) and shallow brackish lagoons (L, lentic). Significant differences were detected in conductivity (EC), and dissolved oxygen (DO) between aquatic habitat types. Ninety-five taxa and 4 phyla were registered: Arthropoda, Nematoda, Mollusca and Annelida. Insecta class represented 83% of the total richness of arthropods, being Diptera dominant with 47 taxa, followed by Coleoptera and Ephemeroptera. Richness was explained by water flow, DO and EC. Taxonomic composition differed between aquatic habitat types. Collector-gatherers and predators were dominant, indicating a dependence on the shore vegetation and hydrophytes.
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来源期刊
Journal of Arid Environments
Journal of Arid Environments 环境科学-环境科学
CiteScore
5.70
自引率
3.70%
发文量
144
审稿时长
55 days
期刊介绍: The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.
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