Cohen P.J.,James Cook University |
PLoS ONE | Year: 2013
Periodically-harvested closures are commonly employed within co-management frameworks to help manage small-scale, multi-species fisheries in the Indo-Pacific. Despite their widespread use, the benefits of periodic harvesting strategies for multi-species fisheries have, to date, been largely untested. We examine catch and effort data from four periodically-harvested reef areas and 55 continuously-fished reefs in Solomon Islands. We test the hypothesis that fishing in periodically-harvested closures would yield: (a) higher catch rates, (b) proportionally more short lived, fast growing, sedentary taxa, and (c) larger finfish and invertebrates, compared to catches from reefs continuously open to fishing. Our study showed that catch rates were significantly higher from periodically-harvested closures for gleaning of invertebrates, but not for line and spear fishing. The family level composition of catches did not vary significantly between open reefs and periodically-harvested closures. Fish captured from periodically-harvested closures were slightly larger, but Trochus niloticus were significantly smaller than those from continuously open reefs. In one case of intense and prolonged harvesting, gleaning catch rates significantly declined, suggesting invertebrate stocks were substantially depleted in the early stages of the open period. Our study suggests periodically-harvested closures can have some short term benefits via increasing harvesting efficiency. However, we did not find evidence that the strategy had substantially benefited multi-species fin-fisheries. © 2013 Cohen and Alexander.
Belton B.,WorldFish |
Global Food Security | Year: 2014
Fisheries and fish supply are undergoing a fundamental structural transition, as indicated by a ten country analysis. Aquaculture now provides around half the fish for direct human consumption and is set to grow further, but capture fisheries continue to make essential contributions to food and nutrition security throughout the global South. Capture fisheries provide diverse, nutritionally valuable fish and fish products which are often culturally preferred and easily accessed by the poor. Technological changes in aquaculture have dramatically increased fish supply, lowered relative fish prices, and reigned in price volatility. Policies that recognize and safeguard the diversity and complementarity of roles played by capture fisheries and aquaculture are needed to ensure that the transition in fisheries sustainably improves food and nutrition security in the global South. © 2013 The Authors.
Kafumbata D.,University of Malawi |
Jamu D.,WorldFish |
Chiotha S.,University of Malawi
Philosophical Transactions of the Royal Society B: Biological Sciences | Year: 2014
This paper reviews the importance of African lakes and their management challenges. African inland lakes contribute significantly to food security, livelihoods and national economies through direct exploitation of fisheries, water resources for irrigation and hydropower generation. Because of these key contributions, the ecosystem services provided are under significant stress mainly owing to high demand by increasing populations, negative anthropogenic impacts on lake catchments and high levels of poverty which result in unsustainable use. Climate variability exacerbates the stress on these ecosystems. Current research findings show that the lakes cannot sustain further development activities on the scale seen over the past few decades. Millions of people are at risk of losing livelihoods through impacts on livestock and wildlife. The review further shows that the problems facing these lakes are beyond the purview of current management practices. A much better understanding of the interactions and feedbacks between different components of the lake socio-ecological systems is needed to address the complex challenges of managing these ecosystem services. This review suggests that the three small wetlands of Chad, Chilwa and Naivasha provide an opportunity for testing novel ideas that integrate sustainability of natural resource management with livelihoods in order to inform policy on how future land use and climatic variability will affect both food security and the ecosystem services associated with it. © 2014 The Author(s) Published by the Royal Society. All rights reserved.
Belton B.,WorldFish |
Bush S.R.,Wageningen University
Geographical Journal | Year: 2014
Geographers first identified aquaculture as an important field of study during the 1990s, pointing to a 'net deficit' in geographical knowledge about the activity. This paper examines how far geographers have come in bridging this knowledge deficit in the last 20 years. While increasing attention has focused on the political economy of export products consumed in the global North, 'everyday' geographies of aquaculture production and consumption in the global South have been neglected. We argue that paying greater attention to everyday aquaculture in the global South provides opportunities for geographers to engage with wider questions around development and change that extend far beyond aquaculture. By focusing on changing patterns of aquaculture production for Southern domestic markets, geographers can provide a counterpoint to Northern dominated agro-food studies by re-emphasising the importance of consumption, urbanisation and agrarian transitions from a more place-based perspective and, in doing so, support the development of theory that reflects Southern realties. © 2013 Royal Geographical Society.
Ratner B.D.,WorldFish |
Asgard B.,Swedish Board of Fisheries |
Allison E.H.,University of Washington
Global Environmental Change | Year: 2014
A review of case law and other documentation of human rights issues in fishing communities highlights forced evictions, detention without trial, child labour, forced labour and unsafe working conditions, and violence and personal security, including gender-based violence, as key areas of concern. We argue that human rights violations undermine current attempts to reform the fisheries sector in developing countries by increasing the vulnerability and marginalization of certain groups. Citing cases from India, the Philippines, Cambodia, and South Africa, we show how human rights advocacy can be an effective element of support for development in fisheries. Finally, we outline how fisheries reform can better address human rights issues as an essential complement to the equitable allocation of fishing rights, contributing to improved resource management and human wellbeing. © 2014 The Authors.
Belton B.,WorldFish |
van Asseldonk I.J.M.,Wageningen University |
Food Policy | Year: 2014
Bangladesh has made considerable progress against human development indicators in recent years, but malnutrition resulting from poor dietary diversity and low micronutrient intakes remains entrenched. Fish is central to the Bangladeshi diet and small fish species are an important micronutrient source. Although fish consumption per capita has increased in recent years as a result of rapid expansion of aquaculture, it is likely that consumption of fish from capture fisheries (including small indigenous species particularly rich in micronutrients), has declined. This paper evaluates data on fish consumption collected in Bangladesh by the International Food Policy Research Institute in 1996/7 and 2006/7 to assess changing patterns of fish consumption and their implications for food and nutrition security. This analysis indicates that growth of aquaculture has been positive, mitigating a sharp reduction in the quantity of fish consumed from capture fisheries and smoothing out seasonal variability in consumption. However, increased availability of fish from aquaculture may not have fully compensated for the loss of fish from capture fisheries in terms of dietary diversity, micronutrient intakes and food and nutrition security, particularly for the poorest consumers. A range of approaches are recommended to sustain and enhance the contributions capture fisheries and aquaculture make to food and nutrition security in Bangladesh. © 2013 The Authors.
Ensor J.E.,University of York |
Park S.E.,WorldFish |
Hoddy E.T.,University of York |
Global Environmental Change | Year: 2015
Whilst it is increasingly recognised that socio-political contexts shape climate change adaptation decisions and actions at all scales, current modes of development typically fail to recognise or adequately challenge these contexts where they constrain capacity to adapt. To address this failing, we consider how a rights-based approach broadens understanding of adaptive capacity while directing attention towards causes of exclusion and marginalisation. Drawing on human rights principles and lessons from rights-based practice, we develop a novel analytical tool for use with communities that considers adaptive capacity through examination of equality, transparency, accountability and empowerment. We apply this to the illustrative case of aquatic agricultural systems in Timor-Leste. This approach yields a qualitative analysis that unpacks the formal and informal institutions and actors that structure opportunities and barriers to adaptive actions. The rights framing exposes the processes of marginalisation and exclusion that lead to differentiation in adaptive capacity, but at the same time helps identify concrete actions that can be taken as part of a rights-based approach to development support for adaptive capacity. The tool and empirical illustration support an emerging body of thought that adaptive capacity requires development actors to engage not only with the technical challenges of responding to climate change, but also with the social and political context that determines the distribution of costs and benefits. © 2014 Elsevier Ltd.
Abernethy K.E.,University of Exeter |
Bodin T.,University of Stockholm |
Olsson P.,University of Stockholm |
Hilly Z.,WorldFish |
Global Environmental Change | Year: 2014
In many coastal nations, community-based arrangements for marine resource management (CBRM) are promoted by government, advocated for by non-government actors, and are seen by both as one of the most promising options to achieve sustainable use and secure inshore fisheries and aquatic resources. Although there is an abundant literature on what makes CBRM effective, is it less clear how CBRM is introduced or develops as an idea in a community, and the process of how the idea leads to the adoption of a new resource management approach with supporting institutions. Here we aim to address this gap by applying an explicit process-based approach drawing on innovation history methodology by mapping and analysing the initiation and emergence of CBRM in five fishing-dependent communities in Solomon Islands. We use insights from the literatures on diffusion of innovation and transformability to define phases of the process and help guide the inductive analysis of qualitative data. We show the CBRM institutionalisation processes were non-linear, required specific strategies to move from one phase to the next, and key elements facilitated or hindered movement. Building active support for CBRM within communities depended on the types of events that happened at the beginning of the process and actions taken to sustain this. Matching CBRM to known resource management ideas or other social problems in the community, developing legitimate institutions and decision-making processes, strong continual interactions between key actors and the rest of the community (not necessarily NGO actors), and community members witnessing benefits of CBRM, all contributed to the emergence and diffusion of CBRM in the communities, and helped to overcome barriers to transformative change. © 2014 The Authors.
Toufique K.A.,Bangladesh Institute of Development Studies |
World Development | Year: 2014
Aquaculture is widely held to contribute to poverty reduction and food security in the Global South, but robust evidence is limited. Using nationally representative data from Bangladesh, this study analyses changes in fish consumption from 2000 to 2010. Rapid expansion of commercial aquaculture pegged down fish prices, resulting in increased fish consumption by extreme poor and moderate poor consumers and those in rural areas. These outcomes are closely linked to the pro-poor nature of national economic growth during this period. These findings contribute to a broadening of the debate on whether the growth of aquaculture in Bangladesh has been pro-poor. © 2014 The Authors.
Molfese C.,University of Plymouth |
Beare D.,Worldfish |
Hall-Spencer J.M.,University of Plymouth
PLoS ONE | Year: 2014
The worldwide depletion of major fish stocks through intensive industrial fishing is thought to have profoundly altered the trophic structure of marine ecosystems. Here we assess changes in the trophic structure of the English Channel marine ecosystem using a 90-year time-series (1920-2010) of commercial fishery landings. Our analysis was based on estimates of the mean trophic level (mTL) of annual landings and the Fishing-in-Balance index (FiB). Food webs of the Channel ecosystem have been altered, as shown by a significant decline in the mTL of fishery landings whilst increases in the FiB index suggest increased fishing effort and fishery expansion. Large, high trophic level species (e.g. spurdog, cod, ling) have been increasingly replaced by smaller, low trophic level fish (e.g. small spotted catsharks) and invertebrates (e.g. scallops, crabs and lobster). Declining trophic levels in fisheries catches have occurred worldwide, with fish catches progressively being replaced by invertebrates. We argue that a network of fisheries closures would help rebalance the trophic status of the Channel and allow regeneration of marine ecosystems. © 2014 Molfese et al.