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Assessment of ecological characteristics of macroinvertebrate communities and their relationship with environmental factors in a stream ecosystem
Chemistry and Ecology ( IF 1.3 ) Pub Date : 2021-10-11 , DOI: 10.1080/02757540.2021.1987419
Aadil Hamid 1 , Sami Ullah Bhat 1 , Arshid Jehangir 2
Affiliation  

ABSTRACT

We explored the spatial and temporal variations in the ecological characteristics of the macroinvertebrate community in relation to the environmental factors from the Vishav stream basin of Kashmir Himalaya from March 2013 to February 2015. We collected water quality and biological data from five locations within the stream basin. Integrated water quality and biological approach indicated the clean water conditions with pollution-sensitive macroinvertebrates at an upstream site located well within the forest area. In response to changing water quality with increasing agricultural and other anthropogenic activities, there was an increase in the number of macroinvertebrate taxa at middle and downstream sites, mostly moderately and highly pollution tolerant taxa. Harsh in-stream environmental conditions (high discharge and stream water velocity) at the upstream site resulted in lower values of alpha diversity metrics. Despite statistically significant spatial variations, macroinvertebrates remained stable across seasons due to low taxa replacement and harshness of climatic factors. Multivariate dispersion homogeneity and composition analysis showed that the macroinvertebrate composition varied similarly among sites, with different compositions. Distance-based redundancy analysis indicated that water temperature, discharge, dissolved oxygen, pH and total phosphorus are major environmental factors determining the benthic macroinvertebrate diversity (alpha diversity) and composition (beta diversity) throughout the study area.



中文翻译:

河流生态系统中大型无脊椎动物群落生态特征及其与环境因子的关系评价

摘要

我们探讨了 2013 年 3 月至 2015 年 2 月克什米尔喜马拉雅山的维沙夫河流域大型无脊椎动物群落生态特征与环境因素相关的时空变化。我们从河流流域内的五个地点收集了水质和生物数据. 综合水质和生物方法表明,位于森林区域内上游地点的污染敏感大型无脊椎动物的清洁水条件。随着农业和其他人为活动的增加,水质发生了变化,中下游大型无脊椎动物类群的数量有所增加,主要是中等和高度耐污染的类群。上游站点恶劣的河内环境条件(高流量和溪流水速)导致 alpha 多样性指标值较低。尽管具有统计学意义的空间变化,但由于低分类群替换和气候因素的严酷性,大型无脊椎动物在整个季节保持稳定。多元分散均匀性和组成分析表明,大型无脊椎动物的组成在不同地点之间变化相似,具有不同的组成。基于距离的冗余分析表明,水温、流量、溶解氧、pH 值和总磷是决定整个研究区底栖大型无脊椎动物多样性(α 多样性)和组成(β 多样性)的主要环境因素。尽管具有统计学意义的空间变化,但由于低分类群替换和气候因素的严酷性,大型无脊椎动物在整个季节保持稳定。多元分散均匀性和组成分析表明,大型无脊椎动物的组成在不同地点之间变化相似,具有不同的组成。基于距离的冗余分析表明,水温、流量、溶解氧、pH 值和总磷是决定整个研究区底栖大型无脊椎动物多样性(α 多样性)和组成(β 多样性)的主要环境因素。尽管具有统计学意义的空间变化,但由于低分类群替换和气候因素的严酷性,大型无脊椎动物在整个季节保持稳定。多元分散均匀性和组成分析表明,大型无脊椎动物的组成在不同地点之间变化相似,具有不同的组成。基于距离的冗余分析表明,水温、流量、溶解氧、pH 值和总磷是决定整个研究区底栖大型无脊椎动物多样性(α 多样性)和组成(β 多样性)的主要环境因素。多元分散均匀性和组成分析表明,大型无脊椎动物的组成在不同地点之间变化相似,具有不同的组成。基于距离的冗余分析表明,水温、流量、溶解氧、pH 值和总磷是决定整个研究区底栖大型无脊椎动物多样性(α 多样性)和组成(β 多样性)的主要环境因素。多元分散均匀性和组成分析表明,大型无脊椎动物的组成在不同地点之间变化相似,具有不同的组成。基于距离的冗余分析表明,水温、流量、溶解氧、pH 值和总磷是决定整个研究区底栖大型无脊椎动物多样性(α 多样性)和组成(β 多样性)的主要环境因素。

更新日期:2021-11-19
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