Fishery dynamics are considered within the context of an integrated ecologiceconomic, or bioeconomic, approach. The possibility of complex dynamics is examined, both of the chaotic as well as the catastrophic variety. Issues involving learning and convergence by fishers are considered. Complications arising from multi-species interactions are considered as are complications arising from the hierarchical nature of fisheries. Policy responses to these problems are seen to involve the precautionary..

We study the viability domains of bio-economic constraints for fishing model of hermaphrodite population, displaying three stages, juvenile, female and male. The dynamic of this model is subject to two constraints: an ecological constraint ensuring the stock perennity, and an economic constraint ensuring a minimum revenue for fishermen. Using viability kernel, we find out a viability domain which simultaneously guarantees a minimum stock level and a minimum income for fleets.

Successful fishery management requires that a dynamic balance of disciplines provide a fully integrated approach. I use Integral Ecology to analyze multiple-use conflicts with an ornamental reef-fish fishery in Hawai'i that is community-managed via the implementation of a series of marine protected areas and the creation of an advisory council. This approach illustrates how the joyful experiences of snorkelers resulted in negative interactions with fish collectors and, thereafter, produced social movements, political will, and ecological change. Although conflicts were reduced (...) and sustainability promoted, lack of acknowledgment of differing worldviews, including persistent native Hawaiian cultural beliefs, contributed to continued conflicts. (shrink)

Fish stocks, as common pool resources, are more and more managed by giving fishermen exclusive access rights as Individual Transferable Quotas (ITQ). These have been widely discussed, with focus on social, economic and ecological issues. While equity aspects have been of great concern, there is very limited analysis about how to assess issues of equity and fair distribution when introducing ITQs. This paper applies an existing framework for assessing equity in resource use systems to tradable quota systems in fisheries. (...) The framework defines the perspectives of distributive fairness, the stakeholders who are bound by fair practice rules, and instruments of fairness, and identifies metrics to assess equity in practice. We assess if the framework provides practical guidance for evaluating whether a given ITQ system operates under an equitable framework programme. (shrink)

The Department of Fisheries and Wildlife Sciences (FWS) graduate program at Virginia Tech held a student-led, discussion-based, 9-week seminar in the philosophy of science during the fall 1999 semester. This seminar presented the sociologist of science with the opportunity to investigate questions such as, How does a contemporary scientific discipline use the philosophy of science? What do scientists hope to gain from an understanding of demarcation issues? And how do they perceive themselves as a science? Issues of demarcation between (...) science and pseudo-science are prevalent in FWS. The role of public funding is at the forefront of the department’s concerns, as governmental agencies are responsible, to a dominant degree, for funding research that the public assumes will benefit them. Thus, the concerns of the department are of utility, or the perception thereof. An investigation of the sort proposed here is practical yet restrictive. The topics are preselected and noncomprehensive because the seminar organizers in FWS chose select readings pertinent to their discipline. Discussions revolved around such topics as the definition of science, methodology, credibility, specialization within FWS, the value (or lack thereof) of theory in FWS, the manager-scientist distinction, and the use of models. The intent of this article is to provide a brief ethnographic view of the seminar. It will review some of the seminar topics and relate them to the broader issue of scientific self-definition and the concept of science as a social mechanism. It is not an evaluative article about FWS but a descriptive article about how a scientific discipline regards itself. (shrink)

International agencies have contributed significantly to the promotion of capital-intensive fisheries development programs in many Third World nations. Activities of both bilateral and multilateral development assistance agencies are examined and shown to have certain common features, notably production-oriented programs typified by the introduction of powerful new fishing technologies, and the promotion of fishery exports as a means of increasing foreign exchange earnings. The argument is advanced that these programs have been largely detrimental to the best interests of recipient nations (...) because they have ignored both resource limitations and the distributional consequences of such development.Fisheries development programs in the Third World are seen as being shaped by a convergence of institutional and class interests between national and international agencies. The perspective of political economy is used to examine these interests and explain their relation to policy outcomes. Evidence is presented to show that international agencies have contributed to dualistic patterns of industry growth which have skewed development benefits towards a narrow urban elite. Rural small-scale fishers have been increasingly marginalized as a result of their inability to compete over a limited and, in some cases, depleted resource.Fisheries development and resource management need to be seen as complementary aspects of a single process rather than as separate activities. Central to fisheries management is the question of resource allocation between competing users. Suggestions are offered by which international development agencies can play an important role in encouraging resource use patterns which are both biologically sustainable and socially just. (shrink)

This analysis uses an analytical frameworkgrounded in political economy perspectives of theglobalization of the agro-food sector combined with acase study approach focusing on the Marine StewardshipCouncil (MSC) to inform discussions regarding thecharacteristics of societal regulation in thepost-Fordist era. More specifically, this analysisuses the case of the emergence of the MSC toinvestigate propositions regarding the existence of,and location of, nascent forms of a transnationalState. The MSC proposes to regulate the certificationof sustainable fisheries at the global level throughan eco-labeling program. The (...) MSC was created in 1996by the transnational environmental organization theWorld Wildlife Fund and the transnational corporationUnilever. The emergence of the MSC has generatedheated discussion in fisheries management circles thatis in general divided along North/South lines. Thisanalysis indicates that the case of the MSC providesvaluable insights into the possible characteristics ofsupranational regulatory mechanisms that might emulatethe role of the nation-State in the post-Fordist era. (shrink)

In this paper, we present a deterministic time discrete mathematical model based on multiregional periodic matrices to describe the dynamics of Sardina pilchardus in the Central Atlantic area of the Moroccan coast. This model deals with two stages (immature and mature) and three spatial zones where sardines are supposed to migrate from one zone to another. The population dynamics is described by an autonomous recurrence equation N(t + 1) = A.N(t), where A is a positive matrix whose entries are estimated (...) using data collected during biannual acoustic surveys carried out from 2001 to 2003 onboard the Norwegian research vessel “Dr Fridtjof Nansen”. The dominant eigenvalue λ of A that gives the long-term growth rate of fish population is smaller than one. This agrees with the stock decrease observed in the data collected. We show that λ is highly sensitive to the recruitment rate and much less sensitive to the reproduction rate. These results can clearly be used to define an efficient scenario in order to fight for instance against a stock decrease. (shrink)

Abstract This work is about the viability domain corresponding to a model of fisheries management. The dynamic is subject of two constraints. The biological constraint ensures the stock perennity where as the economic one ensures a minimum income for the fleets. Using the mathematical concept of viability kernel, we find out a viability domain which simultaneously enables the fleets to exploit the resource, to ensure a minimum income and stock perennity. Content Type Journal Article Category Regular Article Pages (...) 1-19 DOI 10.1007/s10441-012-9153-5 Authors C. Sanogo, LIRNE, Mathmatics Engineering Team, Ibn Tofail University, Kenitra, Morocco S. Ben Miled, ENIT-LAMSIN, Tunis el Manar University, Tunis, Tunisia N. Raissi, LAA, Mohamed V University, Rabat, Morocco Journal Acta Biotheoretica Online ISSN 1572-8358 Print ISSN 0001-5342. (shrink)

Marine ecosystems are in serious troubles globally, largely due to the failures of fishery resources management. To restore and conserve fishery ecosystems, we need new and effective governance systems urgently. This research focuses on fisheries management in ancient China. We found that from 5,000 years ago till early modern era, Chinese ancestors had been constantly enthusiastic about sustainable utilization of fisheries resources and natural balance of fishery development. They developed numerous rigorous policies and regulations to guide (...) people to act on natural laws. Being detailed and scientific, the legal systems had gained gratifying enforcement, due to official efforts and folks’ voluntary participation in resource management. In-depth analyses show that people’s consciousness of ecological conservation was derived from the edification of kinds of ancient eco-ethical wisdom, such as totemism, nature worship, Zhou Yi , Taoism, Buddhism, Confucianism, Mohism, etc. All this Chinese classical wisdom have the same cores: “Nature and Man in One” spirit, frugality and “All things are equal” concept. The findings show that eco-ethical thinking is never inconsistent with social ethic systems, and it’s of great importance to give legal effect to usual ecological moral claims and eco-ethical requirements of the public in protecting the environment. The eco-ethical wisdom is efficient in assisting and urging people to fulfill humans’ obligation for nature. Finally, it’s believed that present world fisheries management will benefit a lot from all these ancient Chinese thoughts and practices. People are expected to make the most of the eco-ethical wisdom, strengthen fishery legislation and fully stimulate their voluntary participation in both marine fishery resources conservation and fishery cyclic economy. (shrink)

In this paper, we present a deterministic time discrete mathematical model based on multiregional periodic matrices to describe the dynamics of Sardina pilchardus in the Central Atlantic area of the Moroccan coast. This model deals with two stages (immature and mature) and three spatial zones where sardines are supposed to migrate from one zone to another. The population dynamics is described by an autonomous recurrence equation N ( t + 1) = A . N ( t ), where A is (...) a positive matrix whose entries are estimated using data collected during biannual acoustic surveys carried out from 2001 to 2003 onboard the Norwegian research vessel “Dr Fridtjof Nansen”. The dominant eigenvalue λ of A that gives the long-term growth rate of fish population is smaller than one. This agrees with the stock decrease observed in the data collected. We show that λ is highly sensitive to the recruitment rate and much less sensitive to the reproduction rate. These results can clearly be used to define an efficient scenario in order to fight for instance against a stock decrease. (shrink)

Fishery dynamics are considered within the context of an integrated ecologiceconomic, or bioeconomic, approach. The possibility of complex dynamics is examined, both of the chaotic as well as the catastrophic variety. Issues involving learning and convergence by fishers are considered as are complications arising from the hierarchical nature of fisheries. Policy responses to these problems are seen to involve the precautionary principle to mitigate the threat of catastrophic discontinuities and the scalematching principle to ensure that management and property (...) rights system are properly.. (shrink)

This work presents a mathematical model describing the interactions between the cross-shore structure of small pelagic fish population an their exploitation by coastal and offshore fisheries. The complete model is a system of seven ODE’s governing three stocks of small pelagic fish population moving and growing between three zones. Two types of fishing fleets are inter-acting with the fish population, industrial boats, constrained to offshore area, and artisanal boats, operating from the shore. Two time scales were considered and we (...) use aggregation methods that allow us to reduce the dimension of the model and to obtain an aggregated model, which is a four dimension one. The analysis of the aggregated model is performed. We discuss the possible equilibriums and their meaning in terms of fishery management. An interesting equilibrium state can be obtained for which we can expect coexistence and a stable equilibrium state between fish stocks and fishing efforts. Some identification parameters are also given in the discussion part of the model. (shrink)

This work presents a mathematical model describing the interactions between the cross-shore structure of small pelagic fish population an their exploitation by coastal and offshore fisheries. The complete model is a system of seven ODE’s governing three stocks of small pelagic fish population moving and growing between three zones. Two types of fishing fleets are inter-acting with the fish population, industrial boats, constrained to offshore area, and artisanal boats, operating from the shore. Two time scales were considered and we (...) use aggregation methods that allow us to reduce the dimension of the model and to obtain an aggregated model, which is a four dimension one. The analysis of the aggregated model is performed. We discuss the possible equilibriums and their meaning in terms of fishery management. An interesting equilibrium state can be obtained for which we can expect coexistence and a stable equilibrium state between fish stocks and fishing efforts. Some identification parameters are also given in the discussion part of the model. (shrink)

This work presents a stock/effort model describing both harvested fish population and fishing effort dynamics. The fishing effort dynamic is controlled by investment which corresponds to the revenue proportion generated by the activity. The dynamics are subject to a set of economic and biological state constraints. The analytical study focuses on the compatibility between state constraints and controlled dynamics. By using the mathematical concept of viability kernel, we reveal situations and management options that guarantee a sustainable system.

This article presents a social learning perspective as a means to analyze and facilitate collective decision making and action in managed resource systems such as platforms. First, the social learning perspective is developed in terms of a normative and analytical framework. The normative framework entails three value principles, namely, systems thinking, experimentation, and communicative rationality. The analytical framework is built up around the following questions: who learns, what is learned, why it is learned, and how. Next, this perspective is used (...) to analyze two managed resource systems: Fishery management in Lake Aheme, Benin and water resources management in Gelderland, The Netherlands. To assess platform performance in resource use negotiation, emerging lessons from the case studies are combined with propositions concerning membership of platforms, accessibility of platform meetings, skills and relations of platform members, realization of platforms, and third party facilitation of platform activities. (shrink)

As an environmentally focused, applied field science, fisheries biology has recently been marked by its failed promise to enable sustainable exploitation. Fisheries biology’s origin through state support raises many questions. How did fisheries biologists get this support? Did political considerations and economic ideals fundamentally shape the science? Why has it been perceived as fundamentally conservation oriented? New evidence indicates the political basis for Thomas Henry Huxley’s contention that the deep-sea fisheries were inexhaustible; this essay shows how (...) his influence extended to recent neoliberal resource management solutions. It also explores how fisheries biology acquired the ideal of maximum sustained yield via Progressive Era efficiency conservation and German scientific forestry; how American Cold War foreign policy made this ideal paradigmatic of mid to late twentieth-century fisheries biology; and how emerging bioeconomics in the 1950s imposed a troublesome misunderstanding of fisheries biology’s earlier mission. (shrink)

This is the Professional Thesis of the DPP that was conducted from February to May 2021. The research focuses on “Illegal Fishing Management in Lower Sesan 2 Reservoir, Stung Treng Province, Cambodia” with two research objectives: to understand the illegal fishing situation and to explore solutions to address the illegal fishing issues in the Lower Sesan 2 Reservoir. The research is approached by a Conceptual Framework addressing four elements of illegal fishing in the Lower Sesan 2 reservoir. Fourth eight (...) community fishery committee members and community fishery members (36% of whom are women) joined in group discussions and 35 local fishers and stakeholders were interviewed. Two types of data were gathered in this research: secondary and primary data. The livelihoods of local fishers and migrant fishers in Lower Sesan 2 reservoir were identified: fishing, rice production, farming, animal husbandry NTFP collection. Some local fishers and all migrant fishers including men, women and youths carried out illegal fishing in Lower Sesan 2. They used illegal fishing gears, caught endangered fish species, fished in conservation area, fished with illegal fishing gears in close fishing season, trading fish without license. The causes of illegal fishing in Lower Sesan 2 reservoir were found out. The performances and challenges, opportunities of stakeholders in fishery resource management in Lower Sesan 2 were identified. The strategies of sustainable fishery resource management were found out. Some recommendations were produced. (shrink)

FAO has a unique and essential rolein addressing the ethical problems facinghumanity and in making these problems intoopportunities for practical resolution. A broadrange of ethical issues in agriculture,fisheries, and forestry were identified byanalysis of the literature and by interviewswith FAO staff. Issues include sharing accessto and preserving natural resources,introduction of new technology, conservatismover the use of genetic engineering, ethics inanimal agriculture, access to information, foodsecurity, sustainable rural development,ensuring participation of all people indecision making and in receiving benefits ofagriculture, reducing (...) corruption, andinvolvement of private and public sectors indecision making. Rather than viewing theseissues as problems, they should be viewed asopportunities for debate, learning aboutothers' views, and resolution. The UnitedNations has an important role to play in howdecisions are made in the global ethical debatein food and agriculture. The ethical role ofFAO is to promote global food security,balanced conservation, management andutilization of natural resources, andsustainable rural development. FAO should fullyand publicly assume its ethicalresponsibilities, gathering and sharinginformation on ethics in its areas of mandate,acting as an interactive forum, and providingexpert guidance on policy options and choicesbased on practical ethical analysis. (shrink)

This paper is an exploration of a current environmental issue dividing two industries in the UK. The issue is offshore wind farms, and the industries are commercial fishing and wind energy. The controversy over offshore wind farms highlights three core issues of conflict: the adequacy of stakeholder consultation processes; the right to compensation for loss of livelihood; and the lack of adequate data. We find that the characterisations that developers, regulators, and fishers hold of each other critically inform their positions (...) on these issues. We examine the weak bargaining position of fishers, and the 'power game' that is played out between them and developers. We conclude that offshore wind farm development would be better managed if stakeholder consultation was more extensive, compensation claims were standardised, and scientific data were more readily available, but that in the meantime, fishers could improve their bargaining power by mobilising potential allies. (shrink)

This paper is an exploration of a current environmental issue dividing two industries in the UK. The issue is offshore wind farms, and the industries are commercial fishing and wind energy. The controversy over offshore wind farms highlights three core issues of conflict: the adequacy of stakeholder consultation processes; the right to compensation for loss of livelihood; and the lack of adequate data. We find that the characterisations that developers, regulators, and fishers hold of each other critically inform their positions (...) on these issues. We examine the weak bargaining position of fishers, and the ‘power game’ that is played out between them and developers. We conclude that offshore wind farm development would be better managed if stakeholder consultation was more extensive, compensation claims were standardised, and scientific data were more readily available, but that in the meantime, fishers could improve their bargaining power by mobilising potential allies. (shrink)

In her groundbreaking work, Elinor Ostrom suggested that communities are able to self-organize and develop rules which allow them to effectively manage common-pool resources while avoiding the “tragedy of the commons”, as proposed by Hardin. Based on empirical case studies of how forests, irrigation, grazing land and fisheries are organized all over the world, Ostrom suggested several principles that can serve as guidelines for managing common-pool resources. In the 21st century new initiatives have been based on sharing. There are (...) various examples such as car and bike sharing in cities, internet platforms such as Wikipedia, community gardens and many others. There is a reason to believe that these efforts will continue to grow and become more popular as people realise the economic, social and ecological benefits. The aim of this paper is to analyse to what extent Ostrom’s findings are relevant to these new, often urbanised or digitalised forms of sharing. Can the famous design principles for which she won the Nobel prize be applied or do we need to search for a different set of principles that are more suitable for these new emerging forms of ‘the commons’? Our findings suggest that although Ostrom’s framework needs to be adapted before being applied to the reality of urban and digitalised environments, some of her findings remain relevant. (shrink)

The alien invasive Red King Crab in the Barents Sea represents both a threat, via ecosystem impacts, and a gain as a revenue source from food sales. Uncertainties exist regarding the ecological impacts but debate in Norway has also emphasised the economic benefits to marginalised fisher communities. This paper reports on a Q-methodology study involving key stakeholders to probe the extent to which divisions exist between different groups. While divisions are indeed found and two groupings identified, these are not as (...) clear as suggested by the lines typically portrayed in the media and elsewhere -, i.e. economic gains versus ecological preservation. Stakeholder groups reported here generally agreed that biodiversity concerns should be central and that further invasion was undesirable due to potential impacts on ecosystem services. (shrink)

This paper explores the ethical dimensions of lionfish removal and provides an argument supporting hunting lionfish for consumption. Lionfish are an invasive species found around the world. Their presence has fueled management strategies that predominantly rely on promoting human predation and consumption. We apply rights-based ethics, utilitarian ethics, and ecocentric environmental ethics to the question of whether hunting and eating lionfish is ethical. After applying these perspectives, we argue that, from a utilitarian perspective, lionfish should be culled. Rights-based ethics, (...) on the other hand, are not applicable in this case, while ecocentric environmental ethics would support lionfish removal. (shrink)

This article examines adaptive resource management as it has been applied to the US horseshoe crab fishery over the past decade. As a critical yet constructive exercise, I have three goals: to suggest how adaptive management, for all its promise, can still be improved; to add a nuanced case study to the literatures on the quantification of nature and environmental decision-making; and to use the example of ARM to make certain temporal aspects of contemporary natural resource management (...) more salient to science and technology studies scholars—that is, to show the ways in which time matters in environmental science, policy, and the analysis thereof. I draw attention to the time-related aspects of adaptive management by developing the notions of temporal orientation and chronological accountability. Temporal orientation refers to the time-based perspectives and epistemological commitments—that is, past-facing empiricism versus future-oriented modeling—that scientists of different types bring to bear on environmental problems. Chronological accountability refers to the missing link in adaptive forms of environmental governance: firm time lines and commitments to reflexively revisit management decisions. The time-related aspects of natural resource management deserve greater attention among both environmental managers and analysts of environmental policy. (shrink)

What I have tried to do here is to provide a historical example of the interdependence between nature and culture that is one of the themes of this conference. To sum up: Scientific descriptions of the world emerge out of a complex interaction between nature, economic production, and the legal system. “Science” consists of a struggle among scientists, and between scientists and citizens, over what counts as “reality.” Lawmaking, in turn, consists of a struggle between people who want to allocate (...) access to resources for particular purposes, whether for commercial use, recreational use, or “natural” uses. Production, for its part, is a complicated function of technology, the sociology of user groups, the structure of legal entitlements to access, and the availability of resources. Nature, finally, is at any point, to no small degree, the product of past and present human impacts on it — which impacts, in turn, are determined in no small way by the sociology and the legal structure of the market.Each process takes place in continual conversation with all the others. As John Muir put it, “When we try to pick out anything by itself, we find it hitched to everything else in the universe.”45 Historically, resource managers have gotten into trouble when they have unconsciously assumed that such is not the case — yet such, assumptions are powerful because they are made instinctively, unthinkingly, at the level of people's basic understanding of the world and their place in it. Lots of them persist.On the other hand, in a few experimental cases in the United States and Canada where government and users have shared power and responsibility for resources management, including long-range planning for recovery and enhancement, here have been some notable improvements. The strategy goes under the name of “co-management” and involves negotiated agreements for shared decision-making between central authority and local groups. Typically, both government and industry resist such arrangements because they involve restructuring the power relations between different sectors in the industry; the result is that the few experiments in co-management that we have seen in the United States have come in areas, typically fisheries and wildlife, where the resource is in serious crisis and all of the parties to the agreement have had to abandon the positions they held previously.Examples of successful co-management regimes include those among American tribes in the Pacific Northwest, among commercial salmon fishers in Alaska, and in a project to rehabilitate the clam industry in New Jersey. Government employees and local groups share responsibility for gathering scientific data about the resources, for developing plans to manage them, and for enforcing regulations. Successful experiments at co-management seem to generate better scientific data about their resources than traditional management regimes do; they significantly reduce enforcement costs; and they enhance the economic power of the resource users. Most importantly, they nurture among the user groups a sense of control over their own destinies, and a willingness to share both costs and benefits of managing the resources rationally and to develop lasting, stable mechanisms for conflict resolution. The process is both democratic and ecologically rational. The key is to link the day-to-day work of producers to their long-range interests as residents in their communities and as working parts of the ecological systems in which they live.45At a minimum, it is clear that objective certainty about the state of the resources or the likely effect of whatever regulations we do impose is simply not attainable. This is partly because of the important role that random shocks play in the environment (and should play in our thinking about it), and also because of the sheer complexity of the system in which we are embedded. There will always be something that even the most complete model leaves out; and in any event the total system of ecology, production, and management will change every time something changes in any part of it.The policy lesson to be derived from all of this, finally, is that what we ought to sustain when we approach conservation problems is not the size of a particular resource, or even the prosperity of a particular harvesting group, but the long-term health of the interaction between nature, the economy, and the political system. We can recognize that the balance of the system, our attempted insurance against an uncertain future, democracy among user groups, and our moral duty to avoid extinguishing species — all of these things being difficult to quantify — do play integral roles in the conversation between nature and humankind, and perhaps more significant roles than the more objective measures to which we usually look for guidance. We can recognize, as John Muir did, that because everything in the universe is hitched to everything else, every step we take will change the total system in some way. When we make choices, then, we can keep an eye on what kind of conversation we want to have with the rest of Creation and make our choices accordingly. *** DIRECT SUPPORT *** A8402064 00014 *** DIRECT SUPPORT *** A8402064 00015. (shrink)

This paper reviews the AWARE(TM) software distributed by the Electric Power Research Institute (EPRI). The program is designed to facilitate the Federal Energy Regulatory Commission (FERC) license renewal process for US hydropower installations. The discussion reviews the regulatory, legal, and social contexts that give rise to the creation and distribution of AWARE(TM). The principal legal impetus for AWARE(TM) is the Electric Consumer Protection Act (ECPA) of 1986 that directs FERC to give equal consideration to power and non-power resources during relicensing. (...) The software is reviewed in this paper from several perspectives including those of natural resource economics, systems modeling, and the social context within which FERC licensing decisions are made. We examine both the software and its underlying methodology and find significant problems with each. Because of its flaws, AWARE(TM) does little to further ECPA's equal consideration requirement. We find that the conservation and restoration impact of ECPA for US fisheries could be seriously hampered by the widespread use of AWARE(TM). (shrink)

New Zealand fisheries management reforms are being conducted in terms of 'balancing' of interests and reconciliation of conflicting claims over ownership and use. Fisheries legislation seeks efficient levels of fishing effort, while establishing 'environmental bottom lines' for stock conservation; resource management law requires, alongside efficiency of resource use, consideration for species diversity and 'the intrinsic values of ecosystems' ; and the Treaty of Waitangi safeguards customary practices and life-support requirements for the Maori people. This paper analyses (...) these antinomies in terms of contrasting ethical positions – utilitarian rationality, versus an ethic of reciprocal hospitality – and shows how fisheries management policies can be formulated on this basis. (shrink)

The excessive and unsustainable exploitation of our marine resources has led to the promotion of marine reserves as a fisheries management tool. Marine reserves, areas in which fishing is restricted or prohibited, can offer opportunities for the recovery of exploited stock and fishery enhancement. This study examines the impact of the creation of marine protected areas, from both economic and biological perspectives. The consequences of reserve establishment on the long-run equilibrium fish biomass and fishery catch levels are evaluated. (...) We include reserve size as control variable to maximize catch at equilibrium. A continuous time model is used to simulate the effects of reserve size on fishing catch. Fish movements between the sites is assumed to take place at a faster time scale than the variation of the stock and the change of the fleet size. We take advantage of these two time scales to derive a reduced model governing the dynamics of the total fish stock and the fishing effort. Simulation results suggest that the establishment of a protected marine reserve will always lead to an increase in total fish biomass, an optimal size of a marine reserve can achieve to maximize the catch at equilibrium. (shrink)

Anglers frequently justify their sport on the basis of nature conservation. According to this utilitarian equation, harming fish by angling is balanced by conservation of nature. To qualify as justification for angling, nature conservation must arise from and be connected to angling, a connection achieved by sport fisheries management. Management practices are, therefore, evaluated to determine if, on the whole, these practices are beneficial to nature and, if these benefits “outweigh” harms caused to nature by management (...) and to fish by angling. Although not conclusive, according to this analysis, harms caused to nature by both sport fisheries management and to fish by angling “outweigh” angling related benefits to nature. Consequently, the justification of angling on the basis of nature conservation is dubious at best. (shrink)

We used a paper-based survey to explore dynamics of Local Food Networks for fish in the Icelandic Westfjords. Preference for local fish remains high, and fish consumption is largely embedded within a gift network, rather than typical commercial channels off ering costly, frozen, and non-local products. Individuals lacking personal connections to the fishing industry obtain fish from these commercial networks. LFNs for fish in rural Icelandic communities are therefore expressions of power dimensions that are symptomatic of the larger inequalities built (...) into the fisheries management system, designed for globalized food networks. The disconnect between large-scale production mechanisms and local consumption patterns highlights the lack of responsiveness of the fishing industry to local Icelandic consumers and demonstrates the impacts national political structures can have on LFNs. (shrink)

Advances in genetics and genomics have raised new questions in trout restoration and management, specifically about species identity and purity, which fish to value, and where these fish belong. This paper examines how this molecular turn in fisheries management is influencing wild and native trout policy in Colorado. Examples from two small Colorado watersheds, Bear Creek and Sand Creek, illustrate how framing trout as genetic bodies can guide managers to care for or kill trout populations in the (...) interest of rectifying decades of genetic disruption caused by human activity. While trout management has typically relied on human intervention, the turn to genetic science is prompting new classifications of lineage and taxa, altering long-standing conservation priorities, and reorienting the manipulation of biological processes such as reproduction and dispersal. As a result, other social and ecological factors may be pushed to the margins of management decisions. These changes warrant greater conversation about the consequences of molecular analyses and the values embedded in trout science and conservation more broadly. (shrink)

Balancing, integrating, or otherwise sorting out private ownership, control, and property rights, on the one hand, with social, common, and shared goods or rights, on the other, is manifest in socio-ethical issues ranging from eminent domain to gay marriage and from endangered species protection to social security. In fact, when one surveys the contemporary socio-ethical landscape with this problem in mind, there appears hardly an issue that it does not touch; and it is frequently the central or underlying component. This (...) is perhaps not surprising for issues involving taxation or other government revenue generating mechanisms that pay for public services and programs—e.g. education, postal service, transportation infrastructure, and policing. But it extends well beyond resourcing governmental institutions and initiatives. It is present in different ways and to different degrees in issues as diverse as AIDS drug availability, fisheries management, euthanasia, affordable housing and home loan availability, gun control, permit issuance and zoning for high impact industry, global warming, health care accessibility, bottled water, and prostitution. (shrink)