Demonstrating multiple benefits from periodically harvested fisheries closures
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Periodically harvested closures (PHCs) are one of the most common forms of fisheries management in Melanesia, demonstrating multiple objectives, including sustaining fish stocks and increasing catch efficiency to support small-scale fisheries. No studies have comprehensively assessed their ability to provide short-term fisheries benefits across the entire harvest regime. We present a novel analytical framework to guide a meta-analysis and assist future research in conceptualizing and assessing the potential of PHCs to deliver benefits for multiple fisheries-related objectives. Ten PHCs met our selection criteria and on average, they provided a 48% greater abundance and 92% greater biomass of targeted fishes compared with areas open to fishing prior to being harvested. This translated into tangible harvest benefits, with fishers removing 21% of the abundance and 49% of the biomass within PHCs, resulting in few post-harvest protection benefits. When PHCs are larger, closed for longer periods or well enforced, short-term fisheries benefits are improved. However, an increased availability of fish within PHCs leads to greater removal during harvests. Synthesis and applications. Periodically harvested clos ures (PHCs) can provide short-term fisheries benefits. Use of the analytical framework presented here will assist in determining long-term fisheries and conservation benefits. We recommend PHCs be closed to fishing for as long as possible, be as large as possible, that compliance be encouraged via community engagement and enforcement, and strict deadlines/goals for harvesting set to prevent overfishing.
This is the peer reviewed version of the following article: Goetze, J. and Claudet, J. and Januchowski-Hartley, F. and Langlois, T. and Wilson, S. and White, C. and Weeks, R. et al. 2017. Demonstrating multiple benefits from periodically harvested fisheries closures. Journal of Applied Ecology. 55 (3): pp. 1102-1113, which has been published in final form at 10.1111/1365-2664.13047. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving at http://olabout.wiley.com/WileyCDA/Section/id-828039.html
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Periodically harvested closures require full protection of vulnerable species and longer closure periodsGoetze, Jordan; Langlois, T.; Claudet, J.; Januchowski-Hartley, F.; Jupiter, S. (2016)Periodically harvested closures (PHCs) are small fisheries closures with objectives such as sustaining fisheries and conserving biodiversity and have become one of the most common forms of nearshore marine management in ...
Fish wariness is a more sensitive indicator to changes in fishing pressure than abundance, length or biomassGoetze, Jordan; Januchowski-Hartley, F.; Claudet, J.; Langlois, T.; Wilson, S.; Jupiter, S. (2017)Identifying the most sensitive indicators to changes in fishing pressure is important for accurately detecting impacts. Biomass is thought to be more sensitive than abundance and length, while the wariness of fishes is ...
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