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Jérôme OLLIER

Small-scale fisheries catch and fishing effort in the Socotra Archipelago (Yemen) betwe... - 0 views

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    The Socotra Archipelago (Yemen), a group of four islands off the north-eastern tip of Africa in the western Indian Ocean, has a population that relies heavily on small-scale fishing for livelihoods and food security. However, the reporting of fisheries catches by Yemen has consistently been incomplete, with artisanal (small-scale, commercial) catches underreported and small-scale non-commercial subsistence and recreational catches not reported at all. Here, we reconstruct the total small-scale catches and fishing effort from the waters of the Socotra Archipelago for 1950 to 2019, and derive catch-per-unit-effort (CPUE) estimates for these fisheries. The catch officially reported by the Food and Agriculture Organization on behalf of Yemen that was assumed taken from the archipelago is thought to be around 20% of the total reconstructed catch for the archipelago. The reconstructed small-scale catch increased from ~1,500 t in 1950 to an all-time peak of 12,000 t in 2000 before declining to 3,300 t by 2014. Thereafter, catches increased again slightly to just over 3,700 t·year-1 by 2019. Artisanal catches accounted for around 70% of total small-scale catches prior to 2010, but made up only around 46% by 2019. Conversely, subsistence catches increased from ~1,000 t in 2010 to ~2,000 t in 2019, and accounted for 54% of total catches by 2019. Small-scale fishing effort increased by over 1000% since 1950 and reached over 11 million kWdays by 2019. The CPUE derived for small-scale fisheries declined by 78% since 1950, from 1.4 kg·kWday-1 to 0.3 kg·kWday-1 in 2019, with most of the decline occurring after 2000. Our findings suggest resource overexploitation, and may assist efforts to more sustainably manage the Socotra Archipelago's fish stocks. Small-scale fisheries support food and nutrient security of the local population, not least during political and humanitarian crises such as in Yemen.
Jérôme OLLIER

Recreational Fishing Impacts in an Offshore and Deep-Water Marine Park: Examining Patte... - 0 views

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    No-take marine reserves are often located in remote locations far away from human activity, limiting perceived impact on extractive users but also reducing their use for investigating impacts of fishing. This study aimed to establish a benchmark in the distribution of fished species across the Ningaloo Marine Park - Commonwealth (NMP-Commonwealth), and adjacent comparable habitats within the Ningaloo Marine Park - State (NMP-State), in Western Australia to test if there was evidence of an effect of recreational fishing, as no commercial fishing is allowed within either marine park. We also examined whether the remote location of the newly established (2018) No-take Zone (NTZ), in NMP-Commonwealth, limits its use for studying the effects of fishing. Throughout the NMP-Commonwealth and NMP-State, where recreational fishing is permitted, we expected the abundance of recreationally fished fish species to increase with increasing distance to the nearest boat ramp, as a proxy of recreational fishing effort. Conversely, we did not expect the abundance of non-fished species and overall species richness to vary in response to the proxy for human activity. Distance to the nearest boat ramp was found to be a strong predictor of fished species abundance, indicating that the effect of recreational fishing can be detected across the NMP-Commonwealth. The effect of the NTZ on fished species abundance was weakly positive, but this difference across the NTZ is expected to increase over time. Habitat composition predictors were only found to influence species richness and non-fished species abundance. This study suggests a clear footprint of recreational fishing across the NMP-Commonwealth and as a result the new NTZ, despite its remote location, can act as a control in future studies of recreational fishing effects.
Jérôme OLLIER

Via @WhySharksMatter - #coronavirus - Fish catch responses to #Covid19 disease curfews ... - 0 views

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    * Fish catch before and after covid curfews was evaluated in gear and reserve management. * Curfew regulation compliance was higher near the reserve than gear managed sites. * Catch rates and incomes were variable but displayed greatest increases adjacent the reserve. * Rates of changes after the curfew mostly followed the longer-term trends in catches. * Curfew accelerated long-term declines in CPUE in gear-restricted but not reserves fisheries.
Jérôme OLLIER

Via @WhySharksMatter - Fishing non-compliance and culture - @sciencedirect - 0 views

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    * Fisheries regulators rely on a culture of compliance to encourage adherence to fisheries legislation and regulations. * Fisheries management mechanisms are routinely adopted to prevent non-compliance. * Literature reveals a common culture of non-compliance across geographic locations and fisheries. * Results are drawn from a study of 945 participants to understand the culture of compliance among West Australian fishers. * Results improve understanding of non-compliance for this inshore fishery and how responses can encourage a compliant culture.
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