Staff View: Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia

Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia

Global biodiversity is being lost due to extensive anthropogenic land cover change. In Southeast Asia, biodiversity-rich forests are being extensively logged and converted to oil-palm monocultures. The impacts of this land-use change on freshwater ecosystems, and particularly on freshwater biodivers...

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Main Authors:	Clare L. Wilkinson, Darren C.J. Yeo, Tan Heok Hui, Arman Hadi Fikri, Robert M. Ewers
Format:	Article
Language:	English English
Published:	Elsevier Ltd. All rights reserved 2018
Subjects:	HD9000-9495 Agricultural industries SD411-428 Conservation and protection Including forest influences, damage by elements, fires, forest reserves
Online Access:	https://eprints.ums.edu.my/id/eprint/41324/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41324/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/41324/
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id	my.ums.eprints.41324
record_format	eprints
spelling	my.ums.eprints.413242024-10-14T02:39:05Z https://eprints.ums.edu.my/id/eprint/41324/ Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia Clare L. Wilkinson Darren C.J. Yeo Tan Heok Hui Arman Hadi Fikri Robert M. Ewers HD9000-9495 Agricultural industries SD411-428 Conservation and protection Including forest influences, damage by elements, fires, forest reserves Global biodiversity is being lost due to extensive anthropogenic land cover change. In Southeast Asia, biodiversity-rich forests are being extensively logged and converted to oil-palm monocultures. The impacts of this land-use change on freshwater ecosystems, and particularly on freshwater biodiversity, remain largely understudied and poorly understood. We assessed the differences between fish communities in headwater stream catchments across an established land-use gradient in Sabah, Malaysia (protected forest areas, twice-logged forest, salvage-logged forest, oil-palm plantations with riparian reserves, and oil-palm plantations without riparian reserves). Stream fishes were sampled using an electrofisher, a cast net and a tray net in 100 m long transects in 23 streams in 2017. Local species richness and functional richness were both significantly reduced with any land-use change from protected forest areas, but further increases in land-use intensity had no subsequent impacts on fish biomass, functional evenness, and functional divergence. Any form of logging or landuse change had a clear and negative impact on fish communities, but the magnitude of that effect was not influenced by logging severity or time since logging on any fish community metric, suggesting that just two rounds of selective impact (i.e., logging) appeared sufficient to cause negative effects on freshwater ecosystems. It is therefore essential to continue protecting primary forested areas to maintain freshwater diversity, as well as to explore strategies to protect freshwater ecosystems during logging, deforestation, and conversion to plantation monocultures that are expected to continue across Southeast Asia. Elsevier Ltd. All rights reserved 2018 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/41324/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41324/2/FULL%20TEXT.pdf Clare L. Wilkinson and Darren C.J. Yeo and Tan Heok Hui and Arman Hadi Fikri and Robert M. Ewers (2018) Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia. Biological Conservation, 222. pp. 1-8. ISSN 0006-320
institution	Universiti Malaysia Sabah
building	UMS Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sabah
content_source	UMS Institutional Repository
url_provider	http://eprints.ums.edu.my/
language	English English
topic	HD9000-9495 Agricultural industries SD411-428 Conservation and protection Including forest influences, damage by elements, fires, forest reserves
spellingShingle	HD9000-9495 Agricultural industries SD411-428 Conservation and protection Including forest influences, damage by elements, fires, forest reserves Clare L. Wilkinson Darren C.J. Yeo Tan Heok Hui Arman Hadi Fikri Robert M. Ewers Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
description	Global biodiversity is being lost due to extensive anthropogenic land cover change. In Southeast Asia, biodiversity-rich forests are being extensively logged and converted to oil-palm monocultures. The impacts of this land-use change on freshwater ecosystems, and particularly on freshwater biodiversity, remain largely understudied and poorly understood. We assessed the differences between fish communities in headwater stream catchments across an established land-use gradient in Sabah, Malaysia (protected forest areas, twice-logged forest, salvage-logged forest, oil-palm plantations with riparian reserves, and oil-palm plantations without riparian reserves). Stream fishes were sampled using an electrofisher, a cast net and a tray net in 100 m long transects in 23 streams in 2017. Local species richness and functional richness were both significantly reduced with any land-use change from protected forest areas, but further increases in land-use intensity had no subsequent impacts on fish biomass, functional evenness, and functional divergence. Any form of logging or landuse change had a clear and negative impact on fish communities, but the magnitude of that effect was not influenced by logging severity or time since logging on any fish community metric, suggesting that just two rounds of selective impact (i.e., logging) appeared sufficient to cause negative effects on freshwater ecosystems. It is therefore essential to continue protecting primary forested areas to maintain freshwater diversity, as well as to explore strategies to protect freshwater ecosystems during logging, deforestation, and conversion to plantation monocultures that are expected to continue across Southeast Asia.
format	Article
author	Clare L. Wilkinson Darren C.J. Yeo Tan Heok Hui Arman Hadi Fikri Robert M. Ewers
author_facet	Clare L. Wilkinson Darren C.J. Yeo Tan Heok Hui Arman Hadi Fikri Robert M. Ewers
author_sort	Clare L. Wilkinson
title	Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
title_short	Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
title_full	Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
title_fullStr	Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
title_full_unstemmed	Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia
title_sort	land-use change is associated with a significant loss of freshwater fish species and functional richness in sabah, malaysia
publisher	Elsevier Ltd. All rights reserved
publishDate	2018
url	https://eprints.ums.edu.my/id/eprint/41324/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/41324/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/41324/
_version_	1814049450568450048
score	13.211869

Land-use change is associated with a significant loss of freshwater fish species and functional richness in Sabah, Malaysia

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