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Modelling and projecting the response of local assemblage composition to land use change across Colombia

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Title: Modelling and projecting the response of local assemblage composition to land use change across Colombia
Authors: Echeverría-Londoño, S
Newbold, T
Hudson, LN
Contu, S
Hill, SLL
Lysenko, I
Arbeláez-Cortés, E
Armbrecht, I
Boekhout, T
Cabra-García, J
Dominguez-Haydar, Y
Nates-Parra, G
Gutiérrez-Lamus, DL
Higuera, D
Isaacs-Cubides, PJ
López-Quintero, CA
Martinez, E
Miranda-Esquivel, DR
Navarro-Iriarte, LE
Noriega, JA
Otavo, SE
Parra-H, A
Poveda, K
Ramirez-Pinilla, MP
Rey-Velasco, JC
Rosselli, L
Smith-Pardo, AH
Urbina-Cardona, JN
Purvis, A
Visconti, P
Item Type: Journal Article
Abstract: Understanding the impact of land use change within assemblages is fundamental to mitigation policies at local and regional scale. Here, we aim to quantify how site-level terrestrial assemblages are responding to land use change in Colombia a mega-diverse country and to project future biodiversity under different scenarios of land use change associated with climate change policies. Location: Colombia (northern South America). Methods: We collated original biodiversity data from 17 publications (285 sites) that examined how human impact affects terrestrial biodiversity in Colombia. From each site we estimated compositional intactness (i.e. compositional similarity to undisturbed sites). We fitted generalized linear mixed-effects models to estimate how these measures of local biodiversity vary across land use habitats. Using space-for-time substitution, we applied our estimates to hindcast biodiversity changes since 1500 and project future changes under climate change policies of the four representative concentration pathways (RCPs). Results: Assemblages in urban, cropland and pasture sites were compositionally very different from those in primary vegetation. We infer that average compositional intactness has been reduced by 18% across Colombia to date, with strong regional variation. The best RCP scenario for future biodiversity is GCAM-RCP4.5, a path that favours the expansion of secondary forests under a strong carbon market; while the worst is MESSAGE-RCP8.5, ‘the business-as-usual’ scenario. Main conclusions: Land use change has driven an increasing change in the composition of ecological assemblages in Colombia. By 2095, the implementation of carbon markets policy of climate change from GCAM-RCP4.5 could mitigate these changes in community composition. In contrast, the business-as-usual scenario MESSAGE-RCP8.5 predicts a steep community change placing the quality of ecosystems at risk.
Issue Date: 21-Aug-2016
Date of Acceptance: 1-Aug-2016
URI: http://hdl.handle.net/10044/1/42211
DOI: https://dx.doi.org/10.1111/ddi.12478
ISSN: 1366-9516
Publisher: Wiley
Start Page: 1099
End Page: 1111
Journal / Book Title: Diversity and Distributions
Volume: 22
Issue: 11
Copyright Statement: © 2016 John Wiley & Sons Ltd. This is the accepted version of the following article, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/ddi.12478/abstract
Sponsor/Funder: The Royal Society
Natural Environment Research Council (NERC)
Funder's Grant Number: WM100051
NE/J011193/1
Keywords: Ecology
05 Environmental Sciences
06 Biological Sciences
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences



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