Bioeconomic analysis of protected area use in fisheries management*

Protected areas in fishery management have been suggested to hedge management failures and variation in harvests. In this paper, a stochastic bioeconomic model of a two-species fishery in the Manning Bioregion is used to test the performance of protected areas as a management tool in a fishery. The establishment of a protected area is analysed under the assumption of heterogenous environments that are linked via density-dependent or sink-source stock dispersal relationships. The sensitivity of the results to different degrees of management is also explored. The model is applied to the Ocean Prawn Trawl, and Ocean Trap and Line fisheries within Manning Bioregion in New South Wales, Australia. The focus of the study is placed on the biological and institutional characteristics that yield benefits to the fishery. It was found that protected area use in the Manning Bioregion is likely to have differing effects on the two fisheries examined, benefiting Ocean Trap and Line fishers but adversely affecting Ocean Prawn Trawl fishers. Overall, it is unlikely that protected area use will lead to an increase resource rent in the fishery.     

How did a network of marine protected areas impact adjacent fisheries? Evidence from Australia

Marine‐protected areas (MPAs) are an effective means of improving habitat quality and biodiversity in the world’s oceans. While the advantages of MPAs as a mechanism for conservation and biodiversity are well established, the potential improvements to fishery performance resulting from a network of MPAs are still being established. Countries around the world have committed to establishing networks of MPAs within their waters by 2020, in response to the United Nations Convention on Biological Diversity. This, coupled with the increasing global demand for seafood and heavy reliance on fishery resources as a source of economic development for many coastal communities, means that an understanding of how these networks can be expected to impact fishery performance is extremely important. We use a difference‐in‐difference modelling approach to isolate the change in the fishery performance associated with the south‐east marine reserve network in Australia. We find no evidence that the economic performance of adjacent fisheries was negatively impacted by the network. This lack of impact is likely due to a network design explicitly intended to avoid effort displacement in key fisheries, along with fishery management changes intended to remove excess fishing capacity.     

Profit and equity trade‐offs in the management of small pelagic fisheries: the case of the Japanese sardine fishery*

The management of small pelagic fisheries is difficult due to environmental regime changes that generate multi‐decadal cyclic fluctuations in stock abundance. Lagged management responses to environmental factors can amplify the effects of fishing and may even result in stock collapse. In this paper, we develop an age‐structured bioeconomic model to explore the effectiveness of alternative management approaches for cyclically fluctuating small pelagic fish stocks. The fishery outcomes are evaluated against the overall profit of the fishery and the intertemporal distribution of fishing profits. The model is parameterised for the Japanese sardine fishery, once the largest fishery in Japan, which has experienced a prolonged period of stock collapse over the last 100 years. The results show that the duration of fishery collapse is mostly determined by the extent of cyclic fluctuations in the recruitment of immature sardines, but the effects of the fluctuations on the fishery are heightened by the cumulative impact of fishing. We further show that restricting fishing reduces the fishery’s overall profits, but smooths the intertemporal distribution of profits, resulting in greater intergenerational equity. This income smoothing effect is particularly pronounced when the stock exhibits high levels of cyclic fluctuations.     

No‐take marine reserves and illegal fishing under imperfect enforcement

No‐take marine reserves have been increasingly advocated as an effective means of supporting marine ecosystems and conserving fisheries resources. A major problem that can hinder the effectiveness of no‐take reserves is the incidence of illegal fishing, which has created significant ecological and economic losses in global fisheries. We construct a bioeconomic model to explore the connection between the effects of no‐take reserves and illegal fishing activities in relation to the level of regulatory control of illegal activities in the reserve and fished areas. Our parameterised model shows that the effects of no‐take reserves on both the extent of illegal fishing and the fish biomass critically depend on illegal fishing regulations and the scale and patterns of fish dispersal. In a fishery where illegal fishing can only be partially controlled, increasing the size of the no‐take reserve may result in a lose‐lose situation in which the level of illegal fishing effort increases and the total biomass decreases. Our results further show that when the pattern of fish dispersal is density dependent, imposing a stricter control on illegal fishing in either reserves or fished areas increases the aggregate level of illegal fishing.     

An economic model of aboriginal fire‐stick farming

Australian Aborigines faced a resource management problem, which they addressed though burning regimes, referred to as fire‐stick farming. While dynamic economic analysis is clearly applicable, to date there have been no attempts to use it to model burning regimes. This paper develops a delayed‐response optimal‐control model to describe Aboriginal fire‐stick farming. The model explains a collective welfare maximizing burning regime that successfully controlled wildfires, protected the resources essential to survival, and, incidentally, produced a biodiverse landscape and limited greenhouse gas emissions. When the parameters of the model are changed to reflect the current institutional realities of reduced access to the land, and less direct dependence on it, traditional Aboriginal burning is prevented or delayed, fuel loads build up and uncontrolled fires are more likely to occur, damaging previously protected species. If Aboriginal burning is to be used to control fires successfully in a modern resource management context, it is necessary to adjust for changes in the institutional incentive structure. Payments for carbon offsets are an example of replacing lost incentives with new ones.     

Need for a cross-sector approach in protected area management

The need for various stakeholders to harmonize their policies and practices has emerged as a dominant paradigm for 21st century natural resource management. Cross-sector coordination is promising because it can enhance policy consistency, enable the realization of synergies and resolve conflicts among sectors regarding resource management. The extent to which ministries and their main stakeholders make efforts to achieve integrated policies for nature conservation requires further research. Therefore, the aim of this study was to explore the consultation reports of ministries from relevant fields (i.e., environmental protection, agriculture, spatial planning, and security) regarding the management plans for Romania’s protected areas. We analysed and visualized 152 consultation reports (2013–2016) covering 15% of Romania's protected areas using self-organizing maps (SOMs), an unsupervised machine-learning method. Our results showed that considerable attention was paid to formal issues in these reports. The cross-sector issues that emerged as the most important were those related to forest landowner consultation, and the harmonization of agricultural and forestry practices, as well as spatial plans for conservation. The resulting SOMs could be used as a tool to strengthen protected area management in the future because they can (i) guide managers of protected areas to develop plans that ensure that resources will be used in the best way according to the visions of multiple sectors and (ii) help the relevant ministries to improve future consultation reports.     

Value versus Volume in the Catch of the Spanish South‐Atlantic Trawl Fishery

An understanding of the link between the level of inputs and resultant level of outputs is of considerable importance when trying to manage fisheries through input controls. To this end, studies of several fisheries have been undertaken to examine this relationship through the estimation of production functions and frontiers, using either catch weight or revenue as the dependent variable. The choice of the appropriate output variable to use in the analysis will depend on the objectives of the fishermen. Maximisation of catch weight is often proposed as an objective of fishermen rather than maximisation of profits. In this paper, the technical efficiency scores of vessels operating in the Spanish south‐Atlantic trawl fishery are estimated using the stochastic production frontier approach. The production frontiers are estimated with both the weight and the value of the catch as the dependent variable. The results of the analysis suggest that fishermen adopt a range of strategies but relatively few aim to maximise catch weight only. The differences in strategies may reflect heterogeneous attitudes towards risk, with more risk averse fishermen aiming to trade‐off some potential catch value for a more certain quantity of catch.     

广东省海洋与渔业总体应急预案研究

海洋与渔业突发公共事件应急管理是国家突发公共事件应急管理的重要组成部分。面对日益频发的各种海洋突发事件,本文立足于广东省海域系统,运用管理学理论和规范研究的方法,以广东省海洋与渔业系统各类应急预案为基础,系统地分析和建构了广东省海洋与渔业总体应急预案及其管理体系,希望对其他地区的海洋与渔业或其他领域的总体应急预案建设有所助益。     

Profit and Price Effects of Multi‐species Individual Transferable Quotas

Regulators in many countries have adopted individual transferable quotas as a means of dealing with the open access problem inherent in fisheries. Using individual vessel data prior to and after the introduction of ITQs in Canada's multi‐species Scotia‐Fundy mobile gear fishery, the paper uses an index number profit decomposition to compare vessel performance over time and across individual vessels. The approach allows us to undertake both an ex post evaluation of short‐term impacts of ITQs and an ex ante evaluation of longer term impacts. With respect to short‐term impacts, the results suggest that larger vessels have benefited the most from the introduction of ITQs, but that all vessels have enjoyed increases in the prices received for those fish species that are included in the quota program. With respect to longer‐term impacts, the transferability provisions of the ITQ program have encouraged exit and more efficient operations to prevail.     

Consumers’ Appreciation of Regional Certification Labels: A Pan‐European Study

Successful regional products, such as Florida oranges, Idaho potatoes and Parma ham, often have to compete against products passing themselves off as the authentic product using the exact same name. This unfair competition misleads consumers, discourages small‐ and medium‐sized enterprises (SMEs) from marketing products based on their region of origin, and may end up hurting rural economies. To protect consumers, and support SMEs and rural economies, many countries around the world have introduced regulations enabling SMEs to legally protect the names of their regional products. The success of these regulations largely depends on consumers’ appreciation of regional certification labels that inform consumers that the name of the regional product is protected and that it denotes the authentic product. To gain an understanding about consumers’ appreciation of regional certification labels, this paper investigates consumers’ image of these labels and proposes a model that relates this image to consumers’ willingness to buy and pay for protected regional products. The model is tested based on Regulation No. 2081/92 that was introduced by the EEC allowing European SMEs to protect their regional products and market their products with a protected‐designation‐of‐origin (PDO) label. Structural equation modelling results suggest that consumers’ image of regional certification labels consists of a quality warranty dimension and an economic support dimension, which positively relate to consumers’ willingness to buy and pay for the protected regional product. Protecting regional products and marketing them with regional certification labels may be beneficial for SMEs producing and marketing regional products. Policy and managerial implications are discussed.     

Brexit Impacts on Irish Agri‐food Exports to the UK

The Irish agri‐food sector is particularly exposed to the consequences of the UK's departure from the EU given that the UK is the destination for 37 per cent of its exports. This article discusses the main channels whereby Brexit may impact this trade. They include the impact of possible further depreciation of sterling and the loss of the protected market status that Irish exporters currently enjoy on their sales on the UK market. There is the possibility that tariffs may be imposed on trade flows between the two countries as well as higher trade costs when either exporting to or importing from the UK. There would also be potential disruption of supply chains on the island of Ireland and the particular difficulties of policing the land border between the North and South of Ireland. Solutions to address some of these problems are available, but will take time to negotiate. Even if the worst outcomes can be avoided, Brexit is likely to have significant structural implications for Irish agriculture. The erosion of the value of privileged access to the UK market will require structural adjustments both in terms of market diversification as well as farm‐level production.     

我国渔港研究现状综述

渔港是渔民生产生活的重要场所,是渔船避风停泊的重要基地,在渔业生产管理、"平安渔业"建设、渔业水域环境保护以及渔区经济社会发展中发挥着重要作用。一直以来,学者们关于渔港建设等方面的探讨研究从未间断过,这些研究成果对于推进各地渔港建设和管理步伐,充分发挥渔港对渔区经济社会发展的辐射带动作用,促进渔业可持续健康发展有着不可忽视的作用。本文按时间分段对中国渔港研究现状进行了一次学术性梳理,指出我国渔港在20世纪70～80年代起步阶段、90年代发展阶段和21世纪以来的繁荣阶段的不同特点,以期对今后的渔港研究以及渔港建设起到一定的借鉴和促进意义。     

Why should landowners in protected areas be compensated? A theoretical framework based on value capture

Many protected areas around the world are struggling to achieve financial stability and meet management costs, which is a difficult challenge. This difficulty is particularly acute in China, even though protected area conservation has been increasingly stressed upon in recent central policy announcements. The practice of providing supplemental funding for protected areas has been going on for years, but there is a lack of theoretical research on why and how landowners in protected areas could be compensated. This paper aims to fill the gap and make two contributions to the literature by explaining why landowners in protected areas should be compensated and who should pay for protected areas. The theoretical arguments on compensation for protected areas are first reviewed before we derive the theoretical framework of value capture for protected areas in China based on the principle of symmetry between burden and compensation. We conclude that local residents should be compensated according to the principle of equal public burden because the spatial regulation of protected areas has seriously restricted their land development rights. Furthermore, the beneficiaries of added land value in the process of the spatial regulation of protected areas can be categorized into three groups: the general public, residents around protected areas and some residents in protected areas (along the infrastructure site or in the upzoning area). Therefore, we structure a three-level value capture framework for protected areas. This is the first attempt to study compensation for protected areas based on value capture theory, which can provide guidance on protected area management for government leaders and researchers across the world.     

Stakeholder perceptions and governance challenges in urban protected area management: The case of the Las Piñas – Parañaque Critical Habitat and Ecotourism Area,Philippines

The conservation and management of protected areas in urban settings has become increasingly challenging with dynamics over land use change in adjacent urban areas being highly relevant to, but at times conflicting with, the protected area. This study seeks to better understand the implications of land use change processes to urban protected area management through the case study of the Las Piñas – Parañaque Critical Habitat and Ecotourism Area (LPPCHEA) in Metro Manila, Philippines. Factors and processes influencing land use change and protected area management and the impact of stakeholders’ perceptions on protected area were analyzed. The urban protected area in itself has limited influence on its surrounding urban areas, as land use change in these areas is shaped more by social, economic and policy/institutional factors occurring within the context of urban-regional development. The study also found that land use conflict is evident in an urban protected area due to the competing ecosystem services derived by various stakeholders. This discord is deepened by the lack of coordination between land use planning and protected area management. Integrating protected area management with land use planning through legally binding instruments, specific timeframes and clear internal procedures can help resolve land use conflict for an urban protected area at the strategic or policy level.     

A bioeconomic model for Hooker’s sea lion bycatch in New Zealand*

The New Zealand Ministry of Fisheries constrains the incidental capture of Hooker’s sea lions in trawl nets of the southern squid fishery by closing the season once an upper limit on sea lion deaths is reached. The regulatory measure is in fact a limit on effort because the number of sea lion deaths is calculated from an estimated mortality rate per standard unit of effort measured in tows. During recent years, vessels have been observed to increase the median time per tow, suggesting that the industry is expanding the capacity of an unregulated input in response. This paper formalises the current situation analytically by constructing a bioeconomic model that captures the idiosyncrasies of the squid fishery and the imposed regulation. Reducing the regulatory constraint to an isoperimetric problem can show how the current management regime may skew incentives leading to the observed increase in tow time. An extension to the current regulatory framework by introducing a spatial dimension to the estimated sea lion mortality rate may lead to more efficient behaviour. Despite retaining an upper limit on sea lion deaths, the profit‐maximising squid industry is given the incentive to increase effort in areas of high squid density relative to sea lion density.     

Determinants of the Willingness of Belgian Farmers to Participate in Agri‐environmental Measures

This paper explores the willingness of Belgian farmers to participate in two voluntary agri‐environmental policies. Farmers' contingent behaviour is analysed on the basis of survey data. Derivations based on a conceptual micro‐economic model indicate that decision subject and decision maker characteristics are important for farmers' participation. The model is empirically tested through the specification and estimation of a probit model. Consistency is found between the theoretical framework and the empirical results indicating that both the expected effect on farm production and the farmers' environmental attitude, which is more positive among younger and better educated farmers, are significant determinants of the acceptance rate of agri‐environmental policies. Other variables which influence participation decisions are farm size and previous experience of farmers themselves or of neighbouring farmers with agri‐environmental measures.     

Price Premiums for Providing Eco‐labelled Seafood: Evidence from MSC‐certified Cod in Sweden

Eco‐labelled seafood is an important tool to promote sustainable development in fisheries. A price premium on eco‐labelled seafood signals a return on investment in sustainable fishing methods, providing an incentive for fishers to adopt such methods. This paper investigates whether Swedish fishermen gained a price premium from participating in the Marine Stewardship Council (MSC)‐certified Swedish Eastern Baltic cod fishery in the period 2011–2012. Using a detailed dataset of landing tickets and log books, we apply a panel data methodology to estimate the MSC price premium. We cannot find reliable evidence that the consumer level premium for MCS cod is actually passed back to the producers in this case.     

中国渔业经济效率评价及发展趋势预测

[目的]渔业是国民经济的重要基础产业。渔业经济效率评价有助于揭示区域渔业资源转换利用效率，服务于渔业经济可持续与高质量发展。[方法]文章基于超效率SBM模型和2006—2018年我国30个省（市、自治区，不含港澳台和西藏地区）淡水养殖渔业经济投入产出数据，测算了区域渔业经济效率，以TOPSIS模型分析投入产出与经济效率的叠加特征，结合标准差椭圆、灰色动态模型GM (1, 1)对我国渔业经济效率空间格局进行分析与预测。[结果]（1）渔业经济效率均达到效率前沿面的80%以上，且呈波动上升趋势。东部、中部、东北地区渔业经济效率远大于西部地区。（2）渔业经济效率与投入产出关系复杂，以“高—高—高—高”“中—中—中—高”“中—中—中—中”类型为主。渔业经济效率空间集聚性增强，空间上呈现4个核密度高值区，高值区范围趋于扩张。（3）渔业经济效率的重心前移路径表现为由东向西，且重心移动速率不断加快，空间分布格局相对稳定。未来渔业经济效率重心总体上向西南移动，保持东北—西南倾向。[结论]研究有助于把握中国渔业养殖经济效率的时空变化特征及发展趋势，能够为各地渔业经济发展提供重要的决策支持。     

Moral Hazard and Risk Management in Agri‐environmental Policy

This paper develops the key finding of Ozanne, Hogan and Colman (2001) that risk aversion among farmers ameliorates the moral hazard problem in relation to agrienvironmental policy compliance. It is shown that risk averse farmers who face uncertainty in their production income are more likely to comply with such a policy as a means of risk management. In addition, it is shown that a principal who has control over both the level of monitoring and the size of penalty, if detected, can reduce non‐compliance by adjustments to these instruments which increase the variance of farmers' income but leave the expected penalty unchanged. It is concluded that risk management by both principals and agents has the potential to diminish the moral hazard problem, especially given proposed developments in agri‐environmental policy in the European Union.     

The impact of safety nets on technology adoption: a difference‐in‐differences analysis

This article contributes to a growing body of empirical literature relating credit constraints and incomplete insurance to investment decisions. We use panel data from rural Ethiopia to investigate whether participation in a safety net program enhances fertilizer adoption. Using a difference‐in‐differences estimator and inverse propensity score weighting, we find that participation in Ethiopia's food‐for‐work (FFW) program increased fertilizer adoption in the short run, but not in the long run. Results also indicate that the intensity of fertilizer usage increased with livestock holdings for FFW‐participant households, providing some evidence that the intervention helped asset‐rich farm households more than asset‐poor households. We find no significant effects of free distribution on fertilizer adoption or intensification. Our results are consistent with the hypothesis that safety nets can be viewed as mechanisms that allow households to take on more risk to pursue higher profits. The results highlight the importance of safety net programs, their effectiveness in ensuring farmers that they will be protected against uninsured shocks, and how that assurance can translate into productivity‐enhancing behavior.