Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/22359
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Indicators for wild animal offtake: Methods and case study for African mammals and birds
Authors: Ingram, Daniel J
Coad, Lauren M
Collen, Ben
Kuempel, Noelle
Breuer, Thomas
Fa, John
Gill, David J C
Maisels, Fiona
Schleicher, Judith
Stokes, Emma
Taylor, Gemma
Scharlemann, Jorn P W
Contact Email: boo.maisels@stir.ac.uk
Keywords: Africa
bushmeat
exploitation
harvest
indicator
Issue Date: 2015
Publisher: The Resilience Alliance
Citation: Ingram DJ, Coad LM, Collen B, Kuempel N, Breuer T, Fa J, Gill DJC, Maisels F, Schleicher J, Stokes E, Taylor G & Scharlemann JPW (2015) Indicators for wild animal offtake: Methods and case study for African mammals and birds, Ecology and Society, 20 (3), Art. No.: 40.
Abstract: Unsustainable exploitation of wild animals is one of the greatest threats to biodiversity and to millions of people depending on wild meat for food and income. The international conservation and development community has committed to implementing plans for sustainable use of natural resources and has requested development of monitoring systems of bushmeat offtake and trade. Although offtake monitoring systems and indicators for marine species are more developed, information on harvesting terrestrial species is limited. Building on approaches developed to monitor exploitation of fisheries and population trends, we have proposed two novel indicators for harvested terrestrial species: the mean body mass indicator (MBMI) assessing whether hunters are relying increasingly on smaller species over time, as a measure of defaunation, by tracking body mass composition of harvested species within samples across various sites and dates; and the offtake pressure indicator (OPI) as a measure of harvesting pressure on groups of wild animals within a region by combining multiple time series of the number of harvested individuals across species. We applied these two indicators to recently compiled data for West and Central African mammals and birds. Our exploratory analyses show that the MBMI of harvested mammals decreased but that of birds rose between 1966/1975 and 2010. For both mammals and birds the OPI increased substantially during the observed time period. Given our results, time-series data and information collated from multiple sources are useful to investigate trends in body mass of hunted species and offtake volumes. In the absence of comprehensive monitoring systems, we suggest that the two indicators developed in our study are adequate proxies of wildlife offtake, which together with additional data can inform conservation policies and actions at regional and global scales.
Type: Journal Article
URI: http://hdl.handle.net/1893/22359
DOI Link: http://dx.doi.org/10.5751/ES-07823-200340
Rights: This journal provides open access to all of its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Users may read, download, and link to any article. Authors, or where required by law, their employers, retain copyright. Please contact them for permission should you want to reuse their work.
Affiliation: University of Sussex
University of Oxford
Zoological Society of London
Zoological Society of London
Wildlife Conservation Society (Africa Program)
Imperial College London
Fauna Flora International
Biological and Environmental Sciences
University of Oxford
Wildlife Conservation Society (North America Program)
University of Oxford
University of Sussex

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