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

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Title: Land-use change alters the mechanisms assembling rainforest mammal communities in Borneo
Authors: Wearn, OR
Carbone, C
Rowcliffe, JM
Pfeifer, M
Bernard, H
Ewers, RM
Item Type: Journal Article
Abstract: 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 man-made 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. This article is protected by copyright. All rights reserved.
Issue Date: Jan-2019
Date of Acceptance: 21-Aug-2018
URI: http://hdl.handle.net/10044/1/62241
DOI: https://dx.doi.org/10.1111/1365-2656.12903
ISSN: 0021-8790
Publisher: Wiley
Start Page: 125
End Page: 137
Journal / Book Title: Journal of Animal Ecology
Volume: 88
Issue: 1
Copyright Statement: © 2018 John Wiley & Sons Ltd. This is the pre-peer reviewed version of the following article: Wearn, O. R., Carbone, C. , Rowcliffe, J. M., Pfeifer, M. , Bernard, H. and Ewers, R. M. (2018), Land‐use change alters the mechanisms assembling rainforest mammal communities in Borneo. J Anim Ecol. , which has been published in final form at https://dx.doi.org/10.1111/1365-2656.12903
Sponsor/Funder: Rainforest Research Sdn Bhd
Funder's Grant Number: LBEE_P34395
Keywords: Science & Technology
Life Sciences & Biomedicine
Ecology
Zoology
Environmental Sciences & Ecology
beta-diversity
community assembly
environmental filtering
land-use change
mammals
oil palm agriculture
selective logging
species co-occurrence
BETA-DIVERSITY
ENVIRONMENT RELATIONSHIPS
PLANT-COMMUNITIES
SPATIAL STRUCTURE
USE INTENSITY
LANDSCAPE
IMPACTS
HOMOGENIZATION
HETEROGENEITY
COEXISTENCE
community assembly
environmental filtering
land-use change
mammals
oil palm agriculture
selective logging
species co-occurrence
β-diversity
community assembly
environmental filtering
land-use change
mammals
oil palm agriculture
selective logging
species co-occurrence
β-diversity
Ecology
05 Environmental Sciences
06 Biological Sciences
07 Agricultural and Veterinary Sciences
Publication Status: Published
Conference Place: England
Online Publication Date: 2018-09-03
Appears in Collections:Faculty of Natural Sciences