Staff View: Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo

Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo

1. The assembly of species communities at local scales is thought to be driven by environmental filtering, species interactions and spatial processes such as dispersal limitation. Little is known about how the relative balance of these drivers of community assembly changes along environmental gradie...

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Main Authors:	Oliver R. Wearn, Chris Carbone, J. Marcus Rowcliffe, Marion Pfeifer, Henry Bernard, Robert M. Ewers
Format:	Article
Language:	English English
Published:	2018
Subjects:	Q Science (General) QH Natural history
Online Access:	https://eprints.ums.edu.my/id/eprint/25856/1/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo.pdf https://eprints.ums.edu.my/id/eprint/25856/2/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo1.pdf https://eprints.ums.edu.my/id/eprint/25856/ https://doi.org/10.1111/1365-2656.12 903
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spelling	my.ums.eprints.258562020-08-27T00:39:06Z https://eprints.ums.edu.my/id/eprint/25856/ Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo Oliver R. Wearn Chris Carbone J. Marcus Rowcliffe Marion Pfeifer Henry Bernard Robert M. Ewers Q Science (General) QH Natural history 1. The assembly of species communities at local scales is thought to be driven by environmental filtering, species interactions and spatial processes such as dispersal limitation. Little is known about how the relative balance of these drivers of community assembly changes along environmental gradients, especially manmade environmental gradients associated with land-use change. 2. Using concurrent camera- and live-trapping, we investigated the local-scale assembly of mammal communities along a gradient of land-use intensity (old-growth forest, logged forest and oil palm plantations) in Borneo. We hypothesised that increasing land-use intensity would lead to an increasing dominance of environmental control over spatial processes in community assembly. Additionally, we hypothesised that competitive interactions among species might reduce in concert with declines in α-diversity (previously documented) along the land-use gradient. 3. To test our first hypothesis, we partitioned community variance into the fractions explained by environmental and spatial variables. To test our second hypothesis, we used probabilistic models of expected species co-occurrence patterns, in particular focussing on the prevalence of spatial avoidance between species. Spatial avoidance might indicate competition, but might also be due to divergent habitat preferences. 4. We found patterns that are consistent with a shift in the fundamental mechanics governing local community assembly. In support of our first hypothesis, the importance of spatial processes (dispersal limitation and fine-scale patterns of home-ranging) appeared to decrease from low to high intensity land-uses, whilst environmental control increased in importance (in particular due to fine-scale habitat structure). Support for our second hypothesis was weak: whilst we found that the prevalence of spatial avoidance decreased along the land-use gradient, in particular between congeneric species pairs most likely to be in competition, few instances of spatial avoidance were detected in any land-use, and most were likely due to divergent habitat preferences. 5. The widespread changes in land-use occurring in the tropics might be altering not just the biodiversity found in landscapes, but also the fundamental mechanics governing the local assembly of communities. A better understanding of these mechanics, for a range of taxa, could underpin more effective conservation and management of threatened tropical landscapes. 2018 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/25856/1/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo.pdf text en https://eprints.ums.edu.my/id/eprint/25856/2/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo1.pdf Oliver R. Wearn and Chris Carbone and J. Marcus Rowcliffe and Marion Pfeifer and Henry Bernard and Robert M. Ewers (2018) Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo. Journal of Animal Ecology, 88 (1). pp. 1-13. https://doi.org/10.1111/1365-2656.12 903
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	Q Science (General) QH Natural history
spellingShingle	Q Science (General) QH Natural history Oliver R. Wearn Chris Carbone J. Marcus Rowcliffe Marion Pfeifer Henry Bernard Robert M. Ewers Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
description	1. The assembly of species communities at local scales is thought to be driven by environmental filtering, species interactions and spatial processes such as dispersal limitation. Little is known about how the relative balance of these drivers of community assembly changes along environmental gradients, especially manmade environmental gradients associated with land-use change. 2. Using concurrent camera- and live-trapping, we investigated the local-scale assembly of mammal communities along a gradient of land-use intensity (old-growth forest, logged forest and oil palm plantations) in Borneo. We hypothesised that increasing land-use intensity would lead to an increasing dominance of environmental control over spatial processes in community assembly. Additionally, we hypothesised that competitive interactions among species might reduce in concert with declines in α-diversity (previously documented) along the land-use gradient. 3. To test our first hypothesis, we partitioned community variance into the fractions explained by environmental and spatial variables. To test our second hypothesis, we used probabilistic models of expected species co-occurrence patterns, in particular focussing on the prevalence of spatial avoidance between species. Spatial avoidance might indicate competition, but might also be due to divergent habitat preferences. 4. We found patterns that are consistent with a shift in the fundamental mechanics governing local community assembly. In support of our first hypothesis, the importance of spatial processes (dispersal limitation and fine-scale patterns of home-ranging) appeared to decrease from low to high intensity land-uses, whilst environmental control increased in importance (in particular due to fine-scale habitat structure). Support for our second hypothesis was weak: whilst we found that the prevalence of spatial avoidance decreased along the land-use gradient, in particular between congeneric species pairs most likely to be in competition, few instances of spatial avoidance were detected in any land-use, and most were likely due to divergent habitat preferences. 5. The widespread changes in land-use occurring in the tropics might be altering not just the biodiversity found in landscapes, but also the fundamental mechanics governing the local assembly of communities. A better understanding of these mechanics, for a range of taxa, could underpin more effective conservation and management of threatened tropical landscapes.
format	Article
author	Oliver R. Wearn Chris Carbone J. Marcus Rowcliffe Marion Pfeifer Henry Bernard Robert M. Ewers
author_facet	Oliver R. Wearn Chris Carbone J. Marcus Rowcliffe Marion Pfeifer Henry Bernard Robert M. Ewers
author_sort	Oliver R. Wearn
title	Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
title_short	Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
title_full	Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
title_fullStr	Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
title_full_unstemmed	Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
title_sort	land-use change alters the mechanisms assembling rainforest mammal communities in borneo
publishDate	2018
url	https://eprints.ums.edu.my/id/eprint/25856/1/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo.pdf https://eprints.ums.edu.my/id/eprint/25856/2/Land-use%20change%20alters%20the%20mechanisms%20assembling%20rainforest%20mammal%20communities%20in%20Borneo1.pdf https://eprints.ums.edu.my/id/eprint/25856/ https://doi.org/10.1111/1365-2656.12 903
_version_	1760230423200268288
score	13.211869

Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo

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