Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.

In response to national policy obligations, many mining companies in Ghana have restored/reclaimed degraded mined out sites through revegetation. The area extent of such restored areas is unknown and there is also paucity of data on success of restoration, species diversity and compositional dynamic...

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Autor principal:	Bertrand Festus Nero
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/165a3feaebc94451bc0b908680e6d73a
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spelling	oai:doaj.org-article:165a3feaebc94451bc0b908680e6d73a2021-12-02T20:03:53ZStructure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.1932-620310.1371/journal.pone.0252371https://doaj.org/article/165a3feaebc94451bc0b908680e6d73a2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0252371https://doaj.org/toc/1932-6203In response to national policy obligations, many mining companies in Ghana have restored/reclaimed degraded mined out sites through revegetation. The area extent of such restored areas is unknown and there is also paucity of data on success of restoration, species diversity and compositional dynamics of such restored landscapes, particularly using mixed species. This study assessed stand structure, diversity and composition dynamics of sites restored with mixed species and models species abundance distribution on these sites. Three reclaimed and one control site (adjacent natural forest) were inventoried using 27, 30 x 30 m plots on the Hwini-Butre and Benso concession of the Golden Star Wassa Limited. Overall 3057 (per 24 plots) and 150 (per 3 plots) individual trees were recorded in the overstorey of the reclaimed and control sites, respectively. In all, 31 species in 13 families occurred on the reclaimed site while 61 species in 29 families occurred on the control. Species richness, abundance and diversity were significantly lower in the reclaimed sites than the control in the overstorey (p≤0.018), mid-storey (p ≤ 0.032), and understorey (p≤ 0.031). Species composition of the reclaimed and control sites were mostly dissimilar in the overstorey, midstorey, and understorey. However, the midstorey and overstorey of the reclaimed sites showed high similarity in composition (Jaccard's index = 0.817). Pioneer and shade-tolerant species were most dominant in the understorey of the control while only shade-tolerant species (mostly herbs and grasses) dominated the reclaimed sites. Species abundance distribution of both reclaimed and control sites followed the geometric series model, indicating that both sites are disturbed but at different intensities. It is concluded that reclamation with mixed species does not necessarily lead to rapid restoration of indigenous climax species on mine spoils. Nonetheless, it may lead to accomplishments of short-term goals of stabilizing and protecting landscapes while conditioning the sites for colonisation of the climax species.Bertrand Festus NeroPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0252371 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bertrand Festus Nero Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
description	In response to national policy obligations, many mining companies in Ghana have restored/reclaimed degraded mined out sites through revegetation. The area extent of such restored areas is unknown and there is also paucity of data on success of restoration, species diversity and compositional dynamics of such restored landscapes, particularly using mixed species. This study assessed stand structure, diversity and composition dynamics of sites restored with mixed species and models species abundance distribution on these sites. Three reclaimed and one control site (adjacent natural forest) were inventoried using 27, 30 x 30 m plots on the Hwini-Butre and Benso concession of the Golden Star Wassa Limited. Overall 3057 (per 24 plots) and 150 (per 3 plots) individual trees were recorded in the overstorey of the reclaimed and control sites, respectively. In all, 31 species in 13 families occurred on the reclaimed site while 61 species in 29 families occurred on the control. Species richness, abundance and diversity were significantly lower in the reclaimed sites than the control in the overstorey (p≤0.018), mid-storey (p ≤ 0.032), and understorey (p≤ 0.031). Species composition of the reclaimed and control sites were mostly dissimilar in the overstorey, midstorey, and understorey. However, the midstorey and overstorey of the reclaimed sites showed high similarity in composition (Jaccard's index = 0.817). Pioneer and shade-tolerant species were most dominant in the understorey of the control while only shade-tolerant species (mostly herbs and grasses) dominated the reclaimed sites. Species abundance distribution of both reclaimed and control sites followed the geometric series model, indicating that both sites are disturbed but at different intensities. It is concluded that reclamation with mixed species does not necessarily lead to rapid restoration of indigenous climax species on mine spoils. Nonetheless, it may lead to accomplishments of short-term goals of stabilizing and protecting landscapes while conditioning the sites for colonisation of the climax species.
format	article
author	Bertrand Festus Nero
author_facet	Bertrand Festus Nero
author_sort	Bertrand Festus Nero
title	Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
title_short	Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
title_full	Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
title_fullStr	Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
title_full_unstemmed	Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.
title_sort	structure, composition and diversity of restored forest ecosystems on mine-spoils in south-western ghana.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/165a3feaebc94451bc0b908680e6d73a
work_keys_str_mv	AT bertrandfestusnero structurecompositionanddiversityofrestoredforestecosystemsonminespoilsinsouthwesternghana
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Structure, composition and diversity of restored forest ecosystems on mine-spoils in South-Western Ghana.

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