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Comparison of local knowledge and researcher-led observations for wildlife exploitation assessment and management

Published online by Cambridge University Press:  20 August 2020

Andrew J Temple Open the ORCID record for Andrew J Temple [Opens in a new window] ,
Selina M Stead Open the ORCID record for Selina M Stead [Opens in a new window] ,
Edward Hind-Ozan Open the ORCID record for Edward Hind-Ozan [Opens in a new window] ,
Narriman Jiddawi  and
Per Berggren
Andrew J Temple*
Affiliation:
School of Natural and Environmental Sciences, Newcastle University, NewcastleNE1 7RU, UK
Selina M Stead
Affiliation:
School of Natural and Environmental Sciences, Newcastle University, NewcastleNE1 7RU, UK Institute of Aquaculture, University of Stirling, StirlingFK9 4LA, UK
Edward Hind-Ozan
Affiliation:
Social Seas, YorkYO23 1ES, UK
Narriman Jiddawi
Affiliation:
Institute of Marine Sciences, Dar es Salaam University, PO Box 668, Zanzibar Town, Tanzania Institute of Fisheries Research Zanzibar, Ministry of Agriculture, Natural Resources, Livestock and Fisheries, PO Box 295, Zanzibar Town, Tanzania
Per Berggren
Affiliation:
School of Natural and Environmental Sciences, Newcastle University, NewcastleNE1 7RU, UK
*
Correspondence to: Dr Andrew J Temple, Email: [email protected]
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Summary

The use of local knowledge observations to generate empirical wildlife resource exploitation data in data-poor, capacity-limited settings is increasing. Yet, there are few studies quantitatively examining their relationship with those made by researchers or natural resource managers. We present a case study comparing intra-annual patterns in effort and mobulid ray (Mobula spp.) catches derived from local knowledge and fisheries landings data at identical spatiotemporal scales in Zanzibar (Tanzania). The Bland–Altman approach to method comparison was used to quantify agreement, bias and precision between methods. Observations from the local knowledge of fishers and those led by researchers showed significant evidence of agreement, demonstrating the potential for local knowledge to act as a proxy, or complement, for researcher-led methods in assessing intra-annual patterns of wildlife resource exploitation. However, there was evidence of bias and low precision between methods, undermining any assumptions of equivalency. Our results underline the importance of considering bias and precision between methods as opposed to simply assessing agreement, as is commonplace in the literature. This case study demonstrates the value of rigorous method comparison in informing the appropriate use of outputs from different knowledge sources, thus facilitating the sustainable management of wildlife resources and the livelihoods of those reliant upon them.

Keywords

biasbycatchelasmobranchfisherieshuntingprecision
Type
Report
Information
Environmental Conservation , Volume 47 , Issue 4 , December 2020 , pp. 304 - 309
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Copyright
© The Author(s), 2020. Published by Cambridge University Press on behalf of Foundation for Environmental Conservation

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