Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)

The Lake Taihu Basin, one of the most highly developed regions in China, suffers from severe water pollution and habitat degradation as a result of economic development and urbanization. However, little research has been conducted on the benthic macroinvertebrate assemblages and their environmental...

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Autores principales:	Y Zhang, L Liu, L Cheng, Y Cai, H Yin, J Gao, Y Gao
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2014
Materias:	Biology (General) QH301-705.5 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/516ad290865d471ba45f866009f3e5dd
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spelling	oai:doaj.org-article:516ad290865d471ba45f866009f3e5dd2021-11-18T09:19:57ZMacroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)1864-77821864-779010.3354/ab00600https://doaj.org/article/516ad290865d471ba45f866009f3e5dd2014-12-01T00:00:00Zhttps://www.int-res.com/abstracts/ab/v23/n1/p15-28/https://doaj.org/toc/1864-7782https://doaj.org/toc/1864-7790The Lake Taihu Basin, one of the most highly developed regions in China, suffers from severe water pollution and habitat degradation as a result of economic development and urbanization. However, little research has been conducted on the benthic macroinvertebrate assemblages and their environmental relationships. We studied the community structure of benthic macroinvertebrates in this area and explored possible factors regulating their structure, diversity, and distribution. We recorded a total of 104 taxa; Bellamya aeruginosa had the highest frequency of occurrence (71 out of 93 sites), followed by Limnodrilus hoffmeisteri (49) and Corbicula fluminea (42). Oligochaeta was the most abundant taxonomic group, accounting for 89.42% of total macroinvertebrate abundance. Benthic communities were mainly characterized by pollution-tolerant taxa, such as L. hoffmeisteri (Oligochaeta), B. aeruginosa (Gastropoda), and Polypedilum scalaenum (Chironomidae), indicating severe anthropogenic disturbance and habitat degradation. The macroinvertebrate diversity decreased from the western hills to the eastern plains aquatic ecoregions; the Shannon-Wiener and Margalef indices differed significantly between the two ecoregions. The abundances (%) of gathering collectors increased from upstream to downstream, but scrapers showed the opposite trend, consistent with the river continuum concept. Community structure and spatial patterns of macroinvertebrates in the Lake Taihu Basin were strongly correlated with habitat diversity, nutrient loads, and aquatic vegetation coverage. These results provide valuable information for effective management practices of biodiversity conservation in stream and river ecosystems of the Lake Taihu Basin.Y ZhangL LiuL ChengY CaiH YinJ GaoY GaoInter-ResearcharticleBiology (General)QH301-705.5MicrobiologyQR1-502ENAquatic Biology, Vol 23, Iss 1, Pp 15-28 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5 Microbiology QR1-502
spellingShingle	Biology (General) QH301-705.5 Microbiology QR1-502 Y Zhang L Liu L Cheng Y Cai H Yin J Gao Y Gao Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
description	The Lake Taihu Basin, one of the most highly developed regions in China, suffers from severe water pollution and habitat degradation as a result of economic development and urbanization. However, little research has been conducted on the benthic macroinvertebrate assemblages and their environmental relationships. We studied the community structure of benthic macroinvertebrates in this area and explored possible factors regulating their structure, diversity, and distribution. We recorded a total of 104 taxa; Bellamya aeruginosa had the highest frequency of occurrence (71 out of 93 sites), followed by Limnodrilus hoffmeisteri (49) and Corbicula fluminea (42). Oligochaeta was the most abundant taxonomic group, accounting for 89.42% of total macroinvertebrate abundance. Benthic communities were mainly characterized by pollution-tolerant taxa, such as L. hoffmeisteri (Oligochaeta), B. aeruginosa (Gastropoda), and Polypedilum scalaenum (Chironomidae), indicating severe anthropogenic disturbance and habitat degradation. The macroinvertebrate diversity decreased from the western hills to the eastern plains aquatic ecoregions; the Shannon-Wiener and Margalef indices differed significantly between the two ecoregions. The abundances (%) of gathering collectors increased from upstream to downstream, but scrapers showed the opposite trend, consistent with the river continuum concept. Community structure and spatial patterns of macroinvertebrates in the Lake Taihu Basin were strongly correlated with habitat diversity, nutrient loads, and aquatic vegetation coverage. These results provide valuable information for effective management practices of biodiversity conservation in stream and river ecosystems of the Lake Taihu Basin.
format	article
author	Y Zhang L Liu L Cheng Y Cai H Yin J Gao Y Gao
author_facet	Y Zhang L Liu L Cheng Y Cai H Yin J Gao Y Gao
author_sort	Y Zhang
title	Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
title_short	Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
title_full	Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
title_fullStr	Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
title_full_unstemmed	Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)
title_sort	macroinvertebrate assemblages in streams and rivers of a highly developed region (lake taihu basin, china)
publisher	Inter-Research
publishDate	2014
url	https://doaj.org/article/516ad290865d471ba45f866009f3e5dd
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Macroinvertebrate assemblages in streams and rivers of a highly developed region (Lake Taihu Basin, China)

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