Abstract
Knowledge about how hunting pressure is determined, and the relative efficacy of different mechanisms to regulate harvest, can help to improve the managers’ decision-making process. We developed a general framework about the decision-making process that regulates red-legged partridge (Alectoris rufa) hunting pressure in central Spain based on information from a focus group and individual interviews with game managers. We also used available information to compare the efficiency of different tools thus improving some decision steps. We evaluated the cost-effectiveness of different population monitoring methods as a way to reduce uncertainty on partridge availability to hunters. Additionally, we investigated the relationship between annual harvest and various regulatory mechanisms of partridge hunting pressure used in the study area to identify the most potentially useful one to limit annual take-off. Game managers usually set hunting pressure after a qualitative assessment on population abundance prior to the hunting season, but this decision was frequently modified during the course of the hunting season according to variations in catch or perceived abundance at that time. Our results showed that kilometric abundance indices (counting partridges from cars along line transects) was a simple cost-efficient and reliable estimate of partridge density (estimated by Distance sampling). A variety of regulatory mechanisms were used by managers. The variables that most affected annual harvest (in addition to partridge abundance) were the number of driven-shooting days, and hunter density in walked-up hunting days, suggesting that their adjustment will be the most efficient regulatory mechanisms. We conclude that adequate monitoring on population abundance should be a critical step for managers’ decision-making, and that a better understanding of the relative value of regulatory mechanisms, combining social and ecological approaches, would help improving our understanding of any human-mediated system, thus leading to better management recommendations.
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Acknowledgments
We are very grateful to the many people who aided with fieldwork and game managers for their collaboration and cooperation. S. Díaz-Fernández carried out all face-to-face questionnaires to game managers. J. Vicente helped with the distance sampling analysis. N. Bunnefeld and E. Newton provided helpful suggestions on a previous draft. J.C. had a postdoctoral contract jointly financed by the European Social Fund and JCCM (Operational Programme FSE 2007–2013), M.D.M. is currently funded by Consejería de Economía, Inovación, Ciencia y Empleo of Junta de Andalucía, and the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement 267226. Work was supported by the European Commission (7th Framework Programme for R&D through project HUNT, 212160, FP7-ENV-2007-1), JCCM (project PPII-2014-016-A), and Conserjería de Agricultura), by the Ministerio de Ciencia y Tecnología (CGL2008-04282/BOS), and by CSIC (PIE 201330E105).
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Caro, J., Delibes-Mateos, M., Viñuela, J. et al. Improving decision-making for sustainable hunting: regulatory mechanisms of hunting pressure in red-legged partridge. Sustain Sci 10, 479–489 (2015). https://doi.org/10.1007/s11625-015-0302-z
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DOI: https://doi.org/10.1007/s11625-015-0302-z