No abstract

No abstract

The sustainable use of fisheries resources is a priority of the African Union in developing the Blue Economy (BE). Growing global demand for seafood has attracted diverse actors to African waters, including Distant Water Fishing Nations (DWFNs) fleets. Complex fisheries governance challenges, unsustainable rates of fishing and rising fisheries-related crimes have ensued. To reverse these impacts, some African states are deploying various fisheries governance mechanisms. Drawing on extensive expert experiences, the review of literature, fisheries databases, international and regional agency reports, NGO and government reports and case studies from West and East Africa, we demonstrate two critical findings. First, fisheries governance mechanisms in Africa act largely to constrain small-scale fisheries (SSF) while failing to contain the industrial fisheries sector, resulting in the marginalisation of the SSF. Secondly, despite a higher incidence of Illegal, Unreported and Unregulated (IUU) fishing in industrial fisheries than the SSF, fisheries governance mechanisms continue to advance the 'Survival of the Richest' -the industrial sector, to the detriment of the 'Fittest' -the SSF. The SSF supports millions of jobs and is better adapted to meet the continents' nutrition and socio-economic security. For the fisheries sector to contribute to the sustainable development of Africans, states must redirect governance towards regulating the industrial sector, emphasising equitable access for the SSF whilst prioritising ecological sustainability.

No abstract

Background and aim: Billfish are epipelagic marine predators facing increasing pressures such as overfishing and rising global temperatures. Overfishing is a major concern, as they are caught by industrial longline fishers targeting tuna. Billfish are targeted by multiple fishing sectors, which provides food, socio-economic and cultural benefits. To support effective billfish management and conservation, it is essential to understand their spatial distribution and the environmental factors that may influence it. Location:The focus of this study is the Indian Ocean (IO), where there are gaps in understanding the interactions between fisheries and billfish distribution. Three of six billfish species are at risk from overfishing. Therefore, determining their distribution is crucial to their management and conservation.Methods: Using Ocean Biogeographic Information System (OBIS) occurrence data, Indian Ocean Tuna Commission (IOTC) catch data, and environmental covariates, we applied species distribution models to investigate the spatial extent of the realized niches of six billfish species in the IO. We also determined the role and relative importance of environmental drivers. Moreover, we evaluated the association between species' spatial distribution and the fishing effort distribution. Results:We found niche partitioning and overlap among the six species identified spatial distribution, with higher species richness in the northern region of the IO and off the East coast of Africa. Temperature, mixed layer depth and salinity were identified as the most important predictors of species distribution, with moderately warm and stable environments preferred by most billfish species. Areas with high species richness and high fishing effort overlap were primarily found in the Areas Beyond National Jurisdiction (ABNJ). In contrast, areas with high species diversity richness and low fishing effort were found mainly in the Exclusive Economic Zone (EEZ). Main conclusion: Spatial overlap between fishing effort and billfish projected distribution suggests inadvertent fishing pressure on billfish populations as they are caught together with targeted tuna. Spatial distribution transcends maritime zones, | 1555 THOYA eT Al.

Socioeconomic security has motivated African states to explore natural resources in areas of overlapping maritime claims. However, Africa's maritime boundaries are characterized by unresolved disputes. Resolution of these disputes is timeconsuming, expensive and can undermine the state's ability to exploit natural resources. The Somalia and Kenya maritime dispute under litigation with the International Court of Justice demonstrates the continental commitment to peaceful resolution. Citing cases from across Africa, we discuss outright delimitation or Joint Management Zones (JMZs) as means to address disputes over shared resources, particularly transboundary fisheries, which have received little attention. Reframing the Kenya-Somalia maritime dispute resolution process as cooperation over fisheries management will have spill-over effects into greater diplomatic relations. Fish do not abide by maritime boundaries. As such, we posit that the peaceful resolution of maritime boundary disputes lies in Africa's ability to consider settlements by way of JMZs to motivate sustainable use of natural resources.

No abstract

Billfish species (families Istiophoridae and Xiphiidae) are caught in artisanal, recreational, and commercial fisheries throughout the Western Indian Ocean region. However, data and information on the interactions among these fisheries and the ecology of billfish in the WIO are not well understood. Using an in-depth analysis of peer-reviewed articles, grey literature, observation studies, and authors’ insider knowledge, we summarize the current state of knowledge on billfish fisheries in 10 countries. To describe historical and current trends, we examined fisheries statistics from governmental and non-governmental agencies, sportfishing clubs’ reports, diaries of sportfishing captains, and the catch and effort databases of the Indian Ocean Tuna Commission. We highlight two key points. First, billfish fisheries in the Western Indian Ocean are highly diverse, comprising two distinct segments—coastal and oceanic. However, data are poor for most countries with significant gaps in information especially for sport and artisanal fisheries. Second, the evidence assembled showed that billfish species have immense social, cultural, and economic value. Swordfish are targeted by both large-scale and semi-industrial fisheries, while other billfish species, particularly marlin, are highly sought after by sport fisheries in most countries. Our paper provides a comprehensive review of billfish fisheries and available information in the context of the WIO underscoring the need to strengthen data collection and reporting, citizen science, and collaborative sustainable development and management of billfish. Supplementary Information The online version contains supplementary material available at 10.1007/s11160-022-09725-8.