Comparative study of the macroinvertebrate assemblages of two urban rivers of Jujuy, Argentina.

IF 1.1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-26 eCollection Date: 2025-01-01 DOI:10.1590/0001-3765202520231359

Graciela Cecilia Gomez

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Abstract

The present study aimed to know the structure of the assemblages of aquatic macroinvertebrates and the ecological state of two urban rivers of San Salvador de Jujuy (Jujuy province, Argentina). Sampling was performed in the Xibi Xibi and Río Grande rivers during two seasons (dry and wet) in 2021. Six sampling sites were selected (three per river). At each site, physico-chemical parameters were measured and benthic macroinvertebrates were collected. The ordering of sites according to environmental variables was studied using Principal Component Analysis (PCA). The water quality of the basin was evaluated using different biotic indices. Correlation analysis was carried out between the values of the indices and the physico-chemical parameters. NaCl, TDS (total dissolved solids) and electrical conductivity were higher in the sites corresponding to the Río Grande, while the sites sampled in the Xibi Xibi had a higher altitude. The results of the biotic indices were diverse. The IBY-4 (Yungas biotic index) and ASPT (Average score per taxon) are the most appropriate indices to monitor the water quality of the urban rivers of Jujuy.

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阿根廷胡胡伊两条城市河流大型无脊椎动物群落的比较研究。

本研究旨在了解阿根廷胡胡伊省San Salvador de Jujuy两条城市河流的水生大型无脊椎动物群落结构和生态状况。于2021年分干湿两季在西溪溪溪和Río格兰德河进行采样。选取了6个采样点（每条河3个）。在每个站点测量了物理化学参数，并收集了底栖大型无脊椎动物。采用主成分分析（PCA）方法，研究了不同环境变量对站点排序的影响。采用不同的生物指标对流域水质进行了评价。对各指标的取值与理化参数进行了相关性分析。NaCl、TDS （total dissolved solids）和电导率在Río Grande对应的位置较高，而在西壁西壁采样的位置海拔较高。生物指标的结果是多样的。yby -4 （Yungas bioindex）和ASPT （Average score per taxon）是胡胡伊市城市河流水质监测最适宜的指标。

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来源期刊

Anais da Academia Brasileira de Ciencias 综合性期刊-综合性期刊

CiteScore

2.20

自引率

0.00%

发文量

347

审稿时长

1 months

期刊介绍： The Brazilian Academy of Sciences (BAS) publishes its journal, Annals of the Brazilian Academy of Sciences (AABC, in its Brazilianportuguese acronym ), every 3 months, being the oldest journal in Brazil with conkinuous distribukion, daking back to 1929. This scienkihic journal aims to publish the advances in scienkihic research from both Brazilian and foreigner scienkists, who work in the main research centers in the whole world, always looking for excellence. Essenkially a mulkidisciplinary journal, the AABC cover, with both reviews and original researches, the diverse areas represented in the Academy, such as Biology, Physics, Biomedical Sciences, Chemistry, Agrarian Sciences, Engineering, Mathemakics, Social, Health and Earth Sciences.