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A global indicator of utilised wildlife populations: regional trends and the impact of management

McRae, Louise; Freeman, Robin; Geldmann, Jonas; Moss, Grace; Kjær-Hansen, Louise; Burgess, Neil; (2020) A global indicator of utilised wildlife populations: regional trends and the impact of management. bioRxiv: Cold Spring Harbor, NY, USA. Green open access

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Abstract

The sustainable use of wildlife is a core aspiration of biodiversity conservation but is the subject of intense debate in the scientific literature as to how, and whether, species are best used and managed. While both positive and negative outcomes of sustainable use are known for specific taxa or local case studies, a global and regional picture of trends in wildlife populations in use is lacking. We use a global data set of over 11,000 time-series to derive indices of ‘utilised’ and ‘not utilised’ wildlife populations and assess global and regional changes, principally for mammals, birds and fishes. We also assess whether ‘management’ makes a measurable difference to wildlife population trends, especially for the utilised species populations. Our results show that wildlife population trends globally are negative, but with utilised populations tending to decline more rapidly, especially in Africa and the Americas. Crucially, where utilised populations are managed, using a variety of mechanisms, there is a positive impact on the trend. It is therefore true that use of species can both be a driver of negative population trends, or a driver of species recovery, with numerous species and population specific case examples making up these broader trends. This work is relevant to the evidence base for the IPBES Sustainable Use Assessment, and to the development of indicators of sustainable use of species under the post-2020 Global Biodiversity Framework being developed under the Convention on Biological Diversity.

Type: Working / discussion paper
Title: A global indicator of utilised wildlife populations: regional trends and the impact of management
Open access status: An open access version is available from UCL Discovery
DOI: 10.1101/2020.11.02.365031
Publisher version: https://doi.org/10.1101/2020.11.02.365031
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10169837
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