Diversity, distribution, and ecology of the genus HyalellaSmith, 1874 (Crustacea: Amphipoda: Hyalellidae) in the Puna and the Altos Andes ecoregions of Argentina

Q3 Environmental Science

Ecologia Austral Pub Date : 2023-07-01 DOI:10.25260/ea.23.33.2.0.2185

G. E. Hankel, Á. V. Isa Miranda, C. Nieto

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Abstract

A�� . We studied the diversity, distribution and ecology of Hyalella (a genus endemic to America that lives over a wide range of geographical altitudes) in 44 peatlands of the Puna and the Altos Andes ecoregions, in the NW of Argentina, mostly placed in the provinces of Salta and Catamarca. Our aim is to deepen our understanding of the distribution and ecology of these freshwater crustaceans in both ecoregions. Field collection was made between 2013 and 2017, and ecogeographical variables were also recorded. The crustaceans were identified by dissections under a microscope. We estimated biodiversity indices and made Whi�aker curves to compare diversity between both ecoregions. We made correlations between Hyalella abundance and 11 ecogeographic variables. A principal components analysis was made to study relationships among each peatland and eco-geographical variables. A total of 6548 individuals, distributed among 4 species and 11 morphospecies, were collected. Diversity in the Puna was higher than in the Altos Andes, but was low in each individual peatland. Hyalella fatimae was the most abundant species in both ecoregions. The PCA revealed that altitude, rainfall, temperature, electrical conductivity and total dissolved solids were key variables that characterized the peatlands. The abundance of Hyalella was negatively correlated with altitude and annual mean rainfall, and positively correlated with the mean minimum temperature of the coldest month. Hyalella proved to be an important component of macroinvertebrates assemblages in these environments, capable of generating a species complex and endemism, as reported for other regions of South America. The peatlands are important wetlands in the arid region of the Puna and the Altos Andes, and deserve more a�ention in the present context of being threatened by climatic change and the advance of economic activities.

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HyalellaSmith, 1874在阿根廷普纳和上安第斯地区的多样性、分布和生态学(甲壳纲:片足纲:hyalelldae)

一个��。我们研究了阿根廷西北部普纳和阿尔托斯安第斯生态区的44个泥炭地的Hyalella(美洲特有属，生活在广泛的地理高度)的多样性、分布和生态学，主要分布在萨尔塔省和卡塔马卡省。我们的目的是加深我们对这些淡水甲壳类动物在两个生态区的分布和生态的理解。在2013年至2017年期间进行了野外采集，并记录了生态地理变量。这些甲壳类动物是在显微镜下解剖鉴定出来的。我们估计了生物多样性指数，并绘制了Whi - aker曲线来比较两个生态区之间的多样性。我们建立了透明菌丰度与11个生态地理变量的相关性。采用主成分分析方法研究了泥炭地与生态地理变量之间的关系。共采集标本6548只，分布于4种11形态种。普纳泥炭地的多样性高于上安第斯山脉，但各泥炭地的多样性都较低。在两个生态区中，法蒂玛透明菌种类最多。主成分分析表明，海拔、降雨量、温度、电导率和总溶解固形物是泥炭地特征的关键变量。透明菌丰度与海拔高度和年平均降雨量呈负相关，与最冷月平均最低气温呈正相关。在这些环境中，透明藻被证明是大型无脊椎动物群落的一个重要组成部分，能够产生物种复杂性和地方性，正如在南美洲其他地区所报道的那样。泥炭地是普纳和上安第斯山脉干旱地区的重要湿地，在目前受到气候变化和经济活动发展威胁的背景下，应该得到更多的关注。

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来源期刊

Ecologia Austral Environmental Science-Ecology

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

47 weeks

期刊介绍： Ecología Austral is the scientific journal published by the Ecological Society of Argentina, that is distributed for free among regular members. It publishes original scientific articles in any branch of the environmental sciences. The articles, in Spanish, English or Portuguese, can be results of original and unpublished scientific research, reviews and updates that summarize the current state of the art on a certain subject, points of view on theory and/or methods in ecology, and teaching aids to be used as supporting reading for students. Manuscripts are peer reviewed by two experts and the revision process is completed within three months after submission and published between two and six month after final acceptance.