Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)

Aquatic macro-invertebrates play a vital role in the food chain of river ecosystem at several trophic guilds and consumer levels, and are used as biomonitoring tools for aquatic ecosystem health. However, hydrologic conditions of these ecosystems have been severely altered because of the increase in...

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Autores principales:	Oppong Samuel K., Nsor Collins Ayine, Buabeng Gabriel Kwabena
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	benthic invertebrates stream condition geometric series rarefaction hill numbers canonical correspondence analysis wewe river Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/12969d4c20b1463085278b2675a8faee
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spelling	oai:doaj.org-article:12969d4c20b1463085278b2675a8faee2021-12-05T14:10:41ZResponse of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)2391-541210.1515/biol-2021-0040https://doaj.org/article/12969d4c20b1463085278b2675a8faee2021-04-01T00:00:00Zhttps://doi.org/10.1515/biol-2021-0040https://doaj.org/toc/2391-5412Aquatic macro-invertebrates play a vital role in the food chain of river ecosystem at several trophic guilds and consumer levels, and are used as biomonitoring tools for aquatic ecosystem health. However, hydrologic conditions of these ecosystems have been severely altered because of the increase in urban development and agricultural expansion. This study examined benthic invertebrate response to processes that structure their community in the Wewe River, segmented into intact, medium, and severe condition zones. We sampled in 100 stations in a period of 4 months in the wet (June–September, 2019) and 3 months in the dry (January–March, 2020) seasons. Geometric series, rarefaction, and Hill numbers models were used to quantify invertebrate assemblages, while ordination technique, canonical correspondence analysis, was used to evaluate the influence of predictive factors on their assemblages. A total of 2,075 individuals belonging to 20 family taxa were registered. There was no significant difference in benthic assemblages between the dry and wet seasons. Predictive factors accounted for 47.04 and 50.84% variances, respectively. Taxa distribution patterns differed significantly only in the severely disturbed zone during the wet season. Neptidae, Libellulidae, and Chironomidae were the most abundant taxa, indicating their broad range habitat preference and their ability to adapt to seasonal changes. Asellidae and Perlidae were the least detected, suggesting their sensitivity to elevated levels of some water quality parameters. The findings highlight the threats to the benthic community and overall functional state of the Wewe River, with the need to consider the proposed conservation interventions indicated in this study.Oppong Samuel K.Nsor Collins AyineBuabeng Gabriel KwabenaDe Gruyterarticlebenthic invertebratesstream conditiongeometric seriesrarefactionhill numberscanonical correspondence analysiswewe riverBiology (General)QH301-705.5ENOpen Life Sciences, Vol 16, Iss 1, Pp 336-353 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	benthic invertebrates stream condition geometric series rarefaction hill numbers canonical correspondence analysis wewe river Biology (General) QH301-705.5
spellingShingle	benthic invertebrates stream condition geometric series rarefaction hill numbers canonical correspondence analysis wewe river Biology (General) QH301-705.5 Oppong Samuel K. Nsor Collins Ayine Buabeng Gabriel Kwabena Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
description	Aquatic macro-invertebrates play a vital role in the food chain of river ecosystem at several trophic guilds and consumer levels, and are used as biomonitoring tools for aquatic ecosystem health. However, hydrologic conditions of these ecosystems have been severely altered because of the increase in urban development and agricultural expansion. This study examined benthic invertebrate response to processes that structure their community in the Wewe River, segmented into intact, medium, and severe condition zones. We sampled in 100 stations in a period of 4 months in the wet (June–September, 2019) and 3 months in the dry (January–March, 2020) seasons. Geometric series, rarefaction, and Hill numbers models were used to quantify invertebrate assemblages, while ordination technique, canonical correspondence analysis, was used to evaluate the influence of predictive factors on their assemblages. A total of 2,075 individuals belonging to 20 family taxa were registered. There was no significant difference in benthic assemblages between the dry and wet seasons. Predictive factors accounted for 47.04 and 50.84% variances, respectively. Taxa distribution patterns differed significantly only in the severely disturbed zone during the wet season. Neptidae, Libellulidae, and Chironomidae were the most abundant taxa, indicating their broad range habitat preference and their ability to adapt to seasonal changes. Asellidae and Perlidae were the least detected, suggesting their sensitivity to elevated levels of some water quality parameters. The findings highlight the threats to the benthic community and overall functional state of the Wewe River, with the need to consider the proposed conservation interventions indicated in this study.
format	article
author	Oppong Samuel K. Nsor Collins Ayine Buabeng Gabriel Kwabena
author_facet	Oppong Samuel K. Nsor Collins Ayine Buabeng Gabriel Kwabena
author_sort	Oppong Samuel K.
title	Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
title_short	Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
title_full	Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
title_fullStr	Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
title_full_unstemmed	Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)
title_sort	response of benthic invertebrate assemblages to seasonal and habitat condition in the wewe river, ashanti region (ghana)
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/12969d4c20b1463085278b2675a8faee
work_keys_str_mv	AT oppongsamuelk responseofbenthicinvertebrateassemblagestoseasonalandhabitatconditionintheweweriverashantiregionghana AT nsorcollinsayine responseofbenthicinvertebrateassemblagestoseasonalandhabitatconditionintheweweriverashantiregionghana AT buabenggabrielkwabena responseofbenthicinvertebrateassemblagestoseasonalandhabitatconditionintheweweriverashantiregionghana
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Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)

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