This study proposes three methods for technical efficiency (TE) estimation using three different fish stock proxy measures while applying the stochastic production frontier (SPF) approach. We apply these methods to two Vietnamese offshore fisheries, gillnet and hand-line, for which measures of stock abundance are unavailable. Based on the assumption of...
After half a century of fisheries development focused on large-scale fisheries the policy arena is finally becoming more conductive to sustaining small-scale fisheries (SSF) in economically developing countries, with a particular focus on international trade opportunities. Debates for and against increased integration of SSF into globalized trade have been presented,...
Excess capacity and overfishing have constituted major threats to sustainable management of fish stocks. Moreover, if capital is locked in unproductive capital in fishing vessels it also constitute a threat to social welfare if fish abundancy and prices are too low to support the livelihood of fish dependent communities and...
This paper measures the impact that the sanitary treatments aiming to reduce the abundance of sea lice Caligus rogercresseyi have on the unit production costs of Atlantic salmon fattening centers in Southern Chile. We make use of unique data that allows us to follow complete production cycles for a sample...
The availability of economic performance data at farm level is a necessary precondition for basic economic analysis of aquaculture production systems. However reliable and comparable data are often missing. Due to different production systems with varying economic performances, a quantitative data collection is quite complex and expensive. The Thünen Institute...
This study attempts to design MPAs to manage sea cucumbers in the coastal waters of Sri Lanka. A bio-economic model developed by Stefansson and Rosenberg (2005) was used in this study. In model simulation, area between 080170 - 060 500 N and 810 250 - 820 was considered and this...
The recent history of fisheries management in New England has seen substantial interannual variability in total allowable catches (TACs), with stocks deemed healthy in one year retroactively identified as overfished soon thereafter. Concurrently, avenues for and examples of coordination between fishermen are increasing in the region, as exemplified by the...
Accurate cost estimation is crucial in fisheries economic analyses, but is often the least known component of many studies. For the past two decades, a systematic approach to collecting fishing cost data has been employed by the Northeast Fisheries Science Center through the sea sampling program, i.e., onboard observers collecting...
One way to evaluate the bio-economic performance of fisheries is to base the decision to harvest on whether there is a benefit from leaving particular sizes of fish to reproduce or sell them today at market price. This takes into account both size-dependent fecundity and size-dependent pricing, two commonly overlooked...
Due to establishment of five international organizations for tuna fisheries, tuna fishing in high seas are consequentially transformed from a time of free competition to a time of cooperative competition on the platforms created by those international organizations. The paper explores the openness, procedures of decision-making, allocation of fishing quotas...
Japanese foods such as sushi and sashimi are in boom in US markets, and the US import of the Japanese fish is expected to increase. However, the growth rate has not been so rapid as the import of agricultural products such as green tea and soybean paste. At the same...
The study examined the determinants of profit margins earned by artisanal fishermen in Ghana using the concept of percentage contribution margin. The effects of selected variables on margins were examined for two marketing agents - spouse and other agents. A system of equations were estimated separately for the major and...
This paper highlights the fishing industry's views on economic impact assessments related to fisheries, and in particular the Scottish Government's assessment accompanying the MPA Consultation. The industry felt this assessment was incomplete, failed to recognise the true impacts on fishermen affected and failed to acknowledge local impacts on communities. We...
Aquaculture has been the world's fastest growing food production technology in recent decades and the effects of its developments are felt in seafood markets worldwide. As a result, fishermen face an additional challenge that has the potential to impact their choice of whether to reduce participation, what species to target,...
Achieving the optimal designation of marine protected areas (MPAs) and design of management measures requires a comprehensive understanding of potential socioeconomic impacts. Yet, assessing the impacts of MPAs and how they are distributed faces significant data and other evidence constraints. What role can monitoring and adaptive approaches play in MPA policy...
When the South Atlantic Fishery Management Council (SAFMC) determined the black sea bass (BSB) stock was rebuilt, the annual catch limit (ACL) more than doubled. A segment of the commercial fishery had historically used fish pots to catch BSB and prior to the increase in the ACL, the fishery was...
While studies have long examined the economic viability of oyster industries along the Pacific and Atlantic coasts of the mainland United States, Hawai`i has had no industry to speak of in decades. The Pacific oyster, <i>Crassostrea gigas</i>, is being cultivated in a traditional Hawaiian fishpond for the first time, providing...
Bioeconomic modeling of an age-structured population typically assumes the value of a fish increases with size; the fish increase in weight as they age, and harvesters may receive an increase in the price per weight. When size selectivity is possible, traditional policy such as individual quotas may still result in...
We describe the dynamics by which competing harvesters selectively target prime market-sized fish, without internalizing the externality of increasing targeting costs, as the abundance of prime fish decreases. Due to the increasing targeting costs for prime size, harvesters continually target the next-most-desirable size fish, gradually fishing down the size structure...
While the literature that uses economic experiments to investigate self-governance of common pool resources is large, almost none of it is concerned with protecting resources from outside incursion. This work presents the results of an economic field experiment designed to study behavioral issues related to both the protection of a...
Kappaphycus alvarezii is economically-important seaweed due to higher carrageenin contents. Suitable culture-method, culture-sites and solutions for fish-grazing have not been tested. Hence, growth-rate ofK.alvarezii under three culture-methods namely raft, line, and cylinder-cage were compared off Velanai and Kayts, in northern Sri Lanka from April-August 2014. Raft and line culture-methods were...
After 2008, in the post-war context of northern Sri Lanka, the Blue swimming crab (BSC), Portunus pelagicus, fishery is U68blooming and becoming an export-oriented industry. Presently the major concern of BSC industry is how long this resource could sustainably utilized, if fishery continuous with current increasing exploitation rates. Hence, present...
Balancing sustainable utilisation goals and equity in socio-economic outcomes become challenging in managing artisanal fisheries, confronted by fluctuating fisheries-resources and poor management-structures. Such artisanal trap-net fishery called "Paddi-Valai" has been targeting shrimps in Anthoniyaarpuram coast in northern Sri Lanka. But its main by-catch, blue swimming crab (BSC), Portunus pelagicus, has...
Subsidies are most often discussed within global fora (such as the World Trade Organization) in terms of concerns over trade distortions, if some countries gain an unfair advantage, through their subsidies, over unsubsidized industry elsewhere. In fisheries, this concern is matched by an environmental argument – that fish stock depletion...
This presentation explores the interaction of the fishery sector and the emerging push for marine biodiversity conservation. These are viewed as two ‘streams’ of governance – flowing through global bodies (notably the United Nations), through nations (with interacting environmental and fisheries agencies), and through thousands of coastal communities worldwide (which...
This research is part of a UK Foreign and Commonwealth Office initiative to develop a roadmap for the Blue Economy in Small Island Developing States (SIDS). The research first considers the unique characteristics of SIDS and the continuing difficulties and challenges of traditional methods of capture fisheries management. The key...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B4: LO - Government Solutions. The session was chaired by Professor Gil Sylvia and the presentation was given by...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B2: Implementing the Landing Obligation in the Reformed CFP - Practical Challenges and Effects on Fishing Businesses - 2016 Story...
To effectively respond to sustainability challenges, there is a need to find (or re-discover) suitable ways to govern, so as to make decisions that maintain healthy environments and sustainable livelihoods in fishery systems. While efforts to this end are needed at all governance levels, from the global to the local,...
Marine protected areas (MPAs) have become a widely used tool for marine conservation and fisheries management. In coastal areas, it has become clear that the success of MPAs, and the achievement of sustainable fishery production, requires a combination of effective management and conservation frameworks, maintenance of decent fisheries livelihoods, and...
There is increasing recognition that the oceans of the world support a wide range of economic sectors. Managing those multiple uses, within a ‘commons’ environment, is undoubtedly challenging. Approaches of ecosystem-based management (EBM), integrated ocean management (IOM) and marine spatial planning (MSP), with associated aspects of spatial allocation and conflict...
Retailers and suppliers of seafood are concerned about assured supply and their broader reputation with consumers. In theory, these concerns align with efforts to manage fisheries sustainably and reduce their environmental and social impacts. Hence engaging seafood supply chains more actively in fisheries management should help improve the fisheries in...
The debate in commercial fishery management has evolved from whether well-defined rights are necessary for sustainability to evaluating the advantages and disadvantages of different rights based system designs. Two of Latin America's largest fisheries, the Chilean Jack Mackerel and Peruvian Anchovy, allocate quota at the vessel-level and restrict the lease...
Calls to account for ecological interactions and tradeoffs in fishery management have grown over time. For example, some groups are asking to reduce global forage fish catch by 10-20% to ensure food supplies for other species These efforts follow advances in ecology and the development of large food web models,...
The goal of this research is to analyse the employment trajectories of more than 1300 fishermen in the French region of Pays de la Loire (Atlantic coast). The dynamic analysis of careers in the fishing sector is of importance to predict the future of this sector. Indeed, the flexibility of...
Worldwide there is a recognition that fishing communities face challenges in changing environments, changing markets, and under different types of stressors. In this context, it is important to identify the causal factors of vulnerability and to understand how people deal with them, in order to find ways to reduce the...
During the past three decades considerable changes have taken place within the Icelandic pelagic industry which, previously considered rather fragmented, is now a highly concentrated vertically integrated industry due to considerable consolidations of quotas. During this period, changes in the ecosystem around Iceland have also brought valuable pelagic species such...
This presentation provides an overview of a keynote presentation given during a plenary session of the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The session was chaired by Hazel Curtis and the presentation was given by Ernesto Penas Lado.
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B4: LO - Government Solutions. The session was chaired by Professor Gil Sylvia and the presentation was given by...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B4: LO - Government Solutions. The session was chaired by Professor Gil Sylvia and the presentation was given by...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B3: Adapt, Improvise and Overcome - fishermen's responses to the LO. The session was chaired by Dr. Erik Lindebo...
This document provides a summary of a Special Session held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5335: Innovations in governance of highly migratory and transboundary fisheries. The session was organized by Vishwanie Maharaj. The report includes discussion...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B3: Adapt, Improvise and Overcome - fishermen's responses to the LO. The session was chaired by Dr. Erik Lindebo...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B3: Adapt, Improvise and Overcome - fishermen's responses to the LO. The session was chaired by Dr. Erik Lindebo...
This presentation provides an overview of a presentation held during the Industry and Policy Day held at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B3: Adapt, Improvise and Overcome - fishermen's responses to the LO. The session was chaired by Dr. Erik Lindebo...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A4: Global Market: Connections and Prospective Opportunities. The session was chaired by Maarten Mens, and the presentation was given by...
This document provides a summary of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the session were 5024: Game Theory and Fisheries. The session was organized by Marko Lindroos. The report includes details of the proceedings of the...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A3: Reformed CFP - Implications for Routes to Market. The session was chaired by Marcus Coleman, and the presentation was...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B2: Implementing the Landing Obligation in the Reformed CFP - Practical Challenges and Effects on Fishing Businesses - 2016 Story...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B2: Implementing the Landing Obligation in the Reformed CFP - Practical Challenges and Effects on Fishing Businesses - 2016 Story...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B1: Experiences from Further Afield. The session was chaired by Professor Clara Ulrich, and the presentation was given by Gil...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B1: Experiences from Further Afield. The session was chaired by Professor Clara Ulrich, and the presentation was given by Dave...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A4: Global Market: Connections and Prospective Opportunities. The session was chaired by Maarten Mens, and the presentation was given by...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A2: Market Implications and Possible Solutions: Certification, Ethics and Social Responsibility. The session was chaired by Maarten Mens, and the...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A2: Market Implications and Possible Solutions: Certification, Ethics and Social Responsibility. The session was chaired by Maarten Mens, and the...
This presentation provides a summary of a Special Session held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the session were 5207: SUCCESS: Reinforcing the competitiveness of the seafood sector. The session was organized by Bertrand Le Gallic. The presentation includes details of...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B2: Implementing the Landing Obligation in the Reformed CFP - Practical Challenges and Effects on Fishing Businesses - 2016 Story...
This presentation provides an overview of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5334: Improving Food Security and Reducing Poverty through Intra-regional Fish Trade in Sub-Saharan Africa. The session was organized and chaired...
This document provides a summary of a Special Session held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5300: Measuring and Managing Risk-taking and Safety in Commercial Fishing. The session was organized by Lisa Pfeiffer. The report includes details...
This presentation provides an overview of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5024: Game Theory and Fisheries. The session was organized by Marko Lindroos.
Fuel costs are one of the main cost items fishing fleets have to face, even when fuel prices for the fishing sector are often lower than public prices, as in many other production sectors. Fuel prices paid by the fishing sector are often exempted of certain taxes. Fuel subsidies, such...
This presentation provides an overview of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016, as well as details of the proceedings of the session.
This presentation provides an overview of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016, as well as details of the proceedings of the session.
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A3: Reformed CFP - Implications for Routes to Market. The session was chaired by Marcus Coleman, and the presentation was...
To examine the impact of the Landing Obligation (LO) on the Irish fishing industry and explore possible mitigation strategies, we carried out two trials on commercial fishing vessels in 2015. One vessel targeted Nephrops, the other mixed demersal whitefish in Irish waters. The study was in two phases. In month...
The contribution of aquaculture and/or fisheries to Gross Domestic Product (GDP) directly or indirectly are essential indicators for policymakers to assess the sector's economic performance and make informed policies or decisions that can affect the level of political and financial support to the sector, and hence, its development pace. Despite...
Tilapia is the world's most popular aquaculture species farmed mostly in earthen ponds. Experience in China (the largest tilapia farming country) is used to develop and calibrate a bio-economic model on intensive tilapia pond culture. The model is used to simulate the impacts of climate, technical and/or financial factors on...
The agrofood sector is the first activity of the manufacturing industry in Europe, representing 14.6% of the total revenue and a value of more than € 1,048,000 mill. in 2014. Nevertheless, this economic subbranch is characterised by lower investment in R&D,the 0.53% level in 2009, than food and manufacturing industries...
The main objective of the PrimeFish project is to consolidate and improve the economic sustainability of European fisheries and aquaculture sectors. The achievement of this goal implies a good understanding of how the seafood market is impacted by the consumer behavior and how trends in product innovation evolve. PrimeFish works...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A2: Market Implications and Possible Solutions: Certification, Ethics and Social Responsibility. The session was chaired by Maarten Mens, and the...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session B2: Implementing the Landing Obligation in the Reformed CFP - Practical Challenges and Effects on Fishing Businesses - 2016 Story...
The rapid growth of aquaculture affects wild fisheries in several ways. We present a bioeconomic model of the interaction between capture based aquaculture that depending on harvest of wild juvenile organisms with a wild fishery, including an effect of marine reserve implementation. We assume the catch of wild juveniles for...
Rights based management (RBM) regimes in fisheries might prevent the rent-dissipation associated with open access as fishers are enabled to coordinate efforts. In this article, I empirically explore the effects of introducing two spatially distinct RBM reforms in the Swedish shrimp fishery at two different points in time during the...
Granting catch shares to cooperatives is a fisheries management option that has been widely applied. Although fishery cooperatives systems around the world are structured in various ways, it appears that most share the characteristic that members of the same cooperative are jointly and severally liable for not exceeding collectively assigned...
Seafish has undertaken an economic impact assessment (EIA) of the landing obligation for key UK fleets targeting demersal stocks. The purpose of the EIA is to provide information that supports decision-making and understanding at a fleet segment, home nation and national level. The EIA has been undertaken in two phases:...
There are perennial efforts in forecasting future fish supply and demand (e.g. the IFPRI Fish to 2020 model, the OECD-FAO Fish Model and the WB-IFPRI-FAO Fish to 2030 model). A panel model is developed to estimate a country's fish demand in the future. Instead of using a country's' own historical...
Species diversification in aquaculture has been driven and influenced by various factors including consumer preference, technical innovations such as advances in artificial propagation, economies of scale, risk diversification, policy orientation, among others. Global aquaculture development in general has been associated with species diversification in terms of both increasing number of...
After thirty years of the Common Fisheries Policy (CFP) in Europe, its limitations in relation to environmental and socio-economic aspects have been well-documented. The STEFC identified some reasons that contribute to poor socio-economic performance due to environmental factors (e.g. reduced TACs and quotas for several key stocks, scarcity of some...
The world's fisheries are a critical piece of the world's food supply, providing an important source of protein for billions of people and employing millions in the process. From a human perspective, it is important that fish stocks around the globe be managed in ways that can continue to provide...
A marine protected area (MPA) is a management tool used for biodiversity conservation and sustainable fisheries development, but it is less used for non-extractive uses of ecosystems such as eco-tourism. We estimate the willingness-to-pay for improved environmental qualities of the Nha Trang Bay MPA on one hand and employment effects...
Farmed fish products in Europe are mainly addressed to the market of live and fresh whole fishes. Only for the trout sector, due to their vertical integration, is it common to process/transform the fish, offering a wider range of products to final consumers. One key factor that makes the supply...
What is the best use of fishery performance? How can we assess progress in managing aquaculture and wild catch fisheries when a wide range of criteria is appropriate? The Australian Fisheries Research and Development Corporation funded a project in 2009 to estimate the benefits arising from managing fisheries and aquaculture...
An understanding of fishers' decisions to exit or stay in a fishery is important for developing effective policy measures. In this study, we analyze the factors influencing this decision using a large administrative database covering the entire Swedish fisher population, their family ties, and detailed labour market data spanning two...
Beam trawling on brown shrimp (Crangon crangon) is one of the most important fisheries for the German fleet. It is an open fishery without a defined quota. Indicators such as increased by-catch, a predominance of undersized shrimp in catches, and a high fishing mortality all suggest that improved gear selectivity...
In June 2015, the UN General Assembly mandated the negotiation of a legally binding instrument on the conservation and sustainable use of marine biodiversity in areas beyond national jurisdiction (ABNJ). The proposed ABNJ Implementation Agreement (ABNJ IA) will have implications for the conduct and regulation of high seas fisheries and...
A great number of public/private founded researches have analyzed the causal relationship among different potential drivers for prices, such as demand and supply growth, changes in prices of raw materials and other inputs as well as the policy about stocking. Some analysts suggest that recent price developments are mainly explicable...
One of the key outcomes of the Horizon 2020 PrimeFish project is the development and delivery of an innovative decision support framework (PrimeDSF) designed for public use. PrimeDSF collects and makes accessible to the scientific and other communities, economic methods, models, studies and other resources, but first and foremost a...
The concept of shared value has been defined by Porter and Cramer as those policies and operating practices that enhance the competitiveness of a company while simultaneously advancing the economic and social conditions in the communities in which it operates. This concept guides a coordinated process of stakeholders' engagement to...
As part of PrimeFish project, the competitiveness of European fisheries and aquaculture will be analysed by examining the supply chain relations and regulation of selected value chains of five commoditised fish species within the EU: Atlantic salmon, rainbow trout, cod, herring, sea bass and sea bream; as well as imported...
The seafood sector has been followed and presented through different data collected as for example by FAO over several years. Often these studies are globally and/or macro-oriented market and even though these studies clearly add insight and understanding they do not provide the details needed for assessing the different sectors...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A2: Market Implications and Possible Solutions: Certification, Ethics and Social Responsibility. The session was chaired by Maarten Mens, and the...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A1: Market Challenges: Ethics and Social Responsibility. The session was chaired by Dr. Tom Pickerell, and the presentation was given...
Information on the total costs associated with various types of commercial fishing businesses is vital to evaluating the economic impact of fisheries regulations and management. However, obtaining reliable cost information can present a challenge. While NOAA’s Northeast Fisheries Science Center (NEFSC) does collect variable (trip related) costs of fishing on...
In 2009 the World Bank published a study of the economic performance of the global marine fishery pertaining to the base year 2004. The key finding of this study was that the global fishery in 2004 was economically and biologically highly inefficient. More precisely, the difference between attainable and actual...
Dominant models of harvester behavior typically focus on where or when harvesters allocate their effort within a fishery, adjusting effort on the intensive margin in response to fishing conditions and management. However, many harvesters participate in multiple fisheries during a year, and thus a major consequence of management change is...
There are only three fundamental sources for increasing seafood supply: 1) better management and utilization of wild fish stocks, 2) aquaculture and 3) aquaculture-enhanced ‘wild’ fisheries. However, nearly all of the significant growth in global seafood harvest and international trade over the past three decades has, and in the future...
Capture fisheries can potentially provide a wide range of social benefits, many of which make important contributions to local livelihoods and national economies. However, in practice, and in many representations of fisheries, the starting point for assessment is the biological, fish, element of the system and its production potential. The benefits...
Assessment studies have summarized the literature on global food security and projected impacts of climate and other major drivers of regional and global change in the 21st Century (IPCC, USDA). Additionally, the Agricultural Model Inter-comparison and Improvement Project (AgMIP) is working to develop new coordinated global and regional assessments of...
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A3: Reformed CFP - Implications for Routes to Market. The session was chaired by Marcus Coleman, and the presentation was...
Economics and political decision making are concerned with allocation of scarce resources among competing ends. Different decisions generally have implications for economic production and distribution, society and stakeholders, and environmental systems and ecosystem services. Stakeholders often seek to influence decision processes using economic arguments about the relative values of different...