Redistribution of benefits but not detection in a fisheries bycatch‐reduction management initiative

McClanahan, Tim R.; Kosgei, Jesse K.

doi:10.1111/cobi.12980

Cited by 11 publications

(13 citation statements)

References 27 publications

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“…A number of studies indicate competition among gears that should produce changes when gears are promoted, eliminated, or modified McClanahan, 2010;McClanahan & Kosgei, 2018). Competitive effects were, however less evident because fish lengths increased among all studied gears, mesh sizes were variable, and fishing effort was stable in the subsidy sites.…”

Section: Discussionmentioning

confidence: 99%

“…We estimated the numbers of fishers for CPUE, as it was more stable and reliable than boats and gear metrics of effort that was less predictable (McClanahan & Kosgei, 2018). We analyzed the common demersal fish and invertebrates and not the pelagic and offshore catches, as they did not come from the habitat and specific gears being studied.…”

Section: Field Data Collectionmentioning

confidence: 99%

“…Prior to and during this period, we made regular measurement on fishing gear and catches among a number of the landing sites of both counties. Details of these coral reefs and study sites have been presented in a number of papers (Maina et al, 2015;McClanahan & Kosgei, 2018).…”

Section: Historical Backgroundmentioning

confidence: 99%

“…We analyzed the common demersal fish and invertebrates and not the pelagic and offshore catches, as they did not come from the habitat and specific gears being studied. We estimated the numbers of fishers for CPUE, as it was more stable and reliable than boats and gear metrics of effort that was less predictable (McClanahan & Kosgei, 2018). We estimated the number of nets distributed and used in net subsidies sites by asking our trained data enumerator and the county clerk (Supplementary Information).…”

Section: Field Data Collectionmentioning

confidence: 99%

“…Similarly, management of fishing gear is associated with increased natural resources and catch rates (McClanahan, 2010;McClanahan, Graham, MacNeil, & Cinner, 2015). Studies of fishing gear manipulations find competitive interactions that can challenge efforts to increase yields (McClanahan & Kosgei, 2018). These findings provoke the need to evaluate management choices in well-designed experimental contexts (Halpern et al, 2004).…”

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confidence: 99%

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Outcomes of gear and closure subsidies in artisanal coral reef fisheries

McClanahan

Kosgei²

2019

Conservat Sci and Prac

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The outcomes of subsidizing natural and fishing capital were studied in nearshore coral reef fisheries initiated by the devolution of governance and management from national to county governments. One county promoted a net subsidy program of preferred mesh sizes with a distinct purchase and distribution date, while the other supported the ongoing maintenance of fisheries closures. This provoked a BACI design where standard fisheries statistics were measured 3 years prior to and 2.5 years after the net subsidy, or the life expectancy of these nets. Only~50% of the purchased nets were utilized, indicating a replacement rather than addition of capital and low need. For example, net fishing effort did not change and there was an overall demographic change in gear use away from traps toward lower cost spearguns. Net subsidized fisheries displayed a 9% increase in the mean length of captured fish but also a decline in catch-per-unit effort (CPUE) and personal incomes and no change in prices, yields, and per area incomes. In contrast, the fisheries surrounding closures displayed increased fishing effort and a 4% decline in fish lengths but increased CPUE, yield, incomes, and per area revenues. The net cost of maintaining closures was less than the gear subsidy purchase. Significant time × treatment interactions in all indicators support the conclusion that gear subsidies, apart from larger fish sizes, worsened the fisheries, while closures improved it. Increased recruitment rather than growth of fish appeared to be the mechanism for improvement. K E Y W O R D Scommunity closures, East Africa, gear management, marine reserves, political ecology, spillover, western Indian Ocean

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Section: Discussionmentioning

confidence: 99%

Section: Field Data Collectionmentioning

confidence: 99%

Section: Historical Backgroundmentioning

confidence: 99%

Section: Field Data Collectionmentioning

confidence: 99%

mentioning

confidence: 99%

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