Melinda Firds Program Management Unit Assistant
World Agroforestry (ICRAF)
Jl. CIFOR, Situ Gede, Sindang Barang,
Bogor Barat - Indonesia 16115
Tel: +62 2511 8625415
Fax: +62 2511 8625416
Email: icrafseapub@cgiar.org
Consequences of defaunation for a tropical tree community
Author
Rhett Daniel Harrison, Sylvester Tan, Joshua B. Plotkin, J.W. Ferry Slik, Matteo Detto, Tania Brenes, Akira Itoh and Stuart J. Davies
Year
2013
Journal Title
Ecology Letters
Institution
Blackwell Publishing Ltd/CNRS
Volume
16
Issue
5
Pages
687–694
Call Number
JA0540-14
Keywords
Biodiversity, bushmeat, conservation, defaunation, hunting, national park, rainforest, seed dispersal, spatial pattern, tropical
Abstract:
Hunting affects a considerably greater area of the tropical forest biome than deforestation and logging combined. Often even large remote protected areas are depleted of a substantial proportion of their vertebrate fauna. However, understanding of the long-term ecological consequences of defaunation in tropical forests remains poor. Using tree census data from a large-scale plot monitored over a 15-year period since the approximate onset of intense hunting, we provide a comprehensive assessment of the immediate consequences of defaunation for a tropical tree community. Our data strongly suggest that over-hunting has engendered pervasive changes in tree population spatial structure and dynamics, leading to a consistent decline in local tree diversity over time. However, we do not find any support for suggestions that over-hunting reduces above-ground biomass or biomass accumulation rate in this forest. To maintain critical ecosystem processes in tropical forests increased efforts are required to protect and restore wildlife populations.
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