Controlling tropical deforestation : an analysis of alternative policies

After discussing ownership issues related to tropical forests, theauthor develops a simple general equilibrium model to represent - at least in a stylized way - the salient aspects of the deforestation process. He uses the model to generate first- and second-best policy options for controlling deforestation and, later, to assess the environmental consequences of government policies often cited in the literature on deforestation. Property rights, though important for understanding the process of tropical deforestation, do not necessarily point to a simple or straightfoward fix for environmental problems, particularly in developing countries. The sheer size, communal nature of service flows, and pervasiveness of individual access to tropical forests make monitoring and enforcement costly in some situations and unimaginable in others. Redefining nominal rights in ways that appear to correct inefficiencies may yield gains in some cases, but an approach to environmental protection that leans heavily on this prescription seems aimed more at symptoms than at causes, says the author. Moreover, policy approaches based on the use of Pigovian taxes or marketable permit schemes may yield efficiency gains in some cases, but such approaches generally involve the same monitoring and enforcement problems that prevent the market from solving allocation problems. Simple, direct solutions to deforestation and other environmental problems are unavailable, but an ability to understand the environmental and welfare consequences of policies adopted for other reasons is useful - if only to help policymakers avoid mistakes that would otherwise go unrecognized. The model the author develops for this purpose is highly stylized and intended primarily to provide a systematic way of thinking about the environmental and welfare effects of government policy - for example, by considering patterns of substitution among inputs and outputs, in cases where an environmental resource to which people have free access is exploited. If the use of first-best policies is infeasible - whether because of monitoringcosts, transboundary effects, or other reasons - then it becomes important to have detailed knowledge of patterns of substitution and complementarity among ordinary inputs and environmental resources, and information on the use of various environmental resources in the production of specific goods and services. Knowledge of such factors can permit policymakers to pursue policy goals in situations where first-best instruments are unavailable.Environmental Economics&Policies,Economic Theory&Research,Public Sector Economics&Finance,Forestry,Markets and Market Access

The Efficiency Gains from Fully Delineating Rights in an ITQ Fishery

Individual transferable quota (ITQ) regulation relies on a decentralized market mechanism and a single price to allocate access to a stock of fish. The resulting allocation will not be fully efficient if the stock being allocated is heterogeneous or if there are potential gains from centralized coordination of harvesting effort. If stocks are heterogeneous in their density, location, or unit value during the season, harvesters governed by an ITQ policy will not be indifferent to when or where they exercise their quotas. Stocks that are relatively dense and/or close to port will be preferred to those less dense or more remote. Because an ITQ policy assigns the same opportunity cost for each unit harvested, individual harvesters have an incentive to compete for higher-valued units, and such competition may dissipate part of the fishery’s potential rent. A similar phenomenon arises when stock densities vary in an unknown way over space or time, so harvesters must engage in costly search. Individual harvesters governed by an ITQ policy still face a collective action problem which limits the incentive to share information on stock locations. This can lead to redundant search effort. We demonstrate that both sources of inefficiency can be eliminated either by defining ITQ rights more precisely or by an agreement among harvesters to coordinate their effort. We develop models that illustrate these effects and identify the factors that determine their likely size. Anecdotal evidence on practices adopted by fishery cooperatives is presented to illustrate the practical relevance of the issues we raise.ITQ fishery, cooperative, search, game theory, property rights, Environmental Economics and Policy, Institutional and Behavioral Economics, International Relations/Trade, Q22, D23, K11,

Overcoming the common pool problem through voluntary cooperation: the rise and fall of a fishery cooperative

We analyze a seldom used, but highly promising form of rights-based management over common pool resources that involves the self-selection of heterogeneous fishermen into sectors. The fishery management regime assigns one portion of an overall catch quota to a voluntary cooperative, with the remainder exploited as a commons by those choosing to fish independently. Data from an Alaska commercial salmon fishery confirm our model's key predictions, that the co-op would facilitate the consolidation of fishing effort, coordination of harvest activities, sharing of information and provision of shared infrastructure. We estimate that the resulting rent gains were at least 25%. A lawsuit filed by two disgruntled independents led to the co-op's demise, an outcome also predicted by our model. Our analysis provides guidance for designing fishery reform that leads to Pareto improvements for fishermen of all skill levels, which suggests a structure that enables reform without losers.

Behavioral and Other Phenotypes in a Cytoplasmic Dynein Light Intermediate Chain 1 Mutant Mouse

The cytoplasmic dynein complex is fundamentally important to all eukaryotic cells for transporting a variety of essential cargoes along microtubules within the cell. This complex also plays more specialized roles in neurons. The complex consists of 11 types of protein that interact with each other and with external adaptors, regulators and cargoes. Despite the importance of the cytoplasmic dynein complex, we know comparatively little of the roles of each component protein, and in mammals few mutants exist that allow us to explore the effects of defects in dynein-controlled processes in the context of the whole organism. Here we have taken a genotype-driven approach in mouse (Mus musculus) to analyze the role of one subunit, the dynein light intermediate chain 1 (Dync1li1). We find that, surprisingly, an N235Y point mutation in this protein results in altered neuronal development, as shown from in vivo studies in the developing cortex, and analyses of electrophysiological function. Moreover, mutant mice display increased anxiety, thus linking dynein functions to a behavioral phenotype in mammals for the first time. These results demonstrate the important role that dynein-controlled processes play in the correct development and function of the mammalian nervous system

The Political Economy of Natural Resource Use: Lessons for Fisheries Reform

This report discusses key lessons drawn from reform experience in the wider natural resource sector that might inform successful reform in fisheries. This report is a compilation of 12 papers prepared by acknowledged international experts in the fields of fisheries and wider natural resource reform which were reviewed at a workshop convened by the Property and Environment Research Center (PERC) in May 2009.The report forms an important initial input into an ongoing enquiry into the political economy of fisheries reform initiated by the World Bank in partnership with the Partnership for African Fisheries (a United Kingdom Department for International Development funded program of the New Partnership for African Development (NEPAD))

The structure of BVU2987 from Bacteroides vulgatus reveals a superfamily of bacterial periplasmic proteins with possible inhibitory function.

Proteins that contain the DUF2874 domain constitute a new Pfam family PF11396. Members of this family have predominantly been identified in microbes found in the human gut and oral cavity. The crystal structure of one member of this family, BVU2987 from Bacteroides vulgatus, has been determined, revealing a β-lactamase inhibitor protein-like structure with a tandem repeat of domains. Sequence analysis and structural comparisons reveal that BVU2987 and other DUF2874 proteins are related to β-lactamase inhibitor protein, PepSY and SmpA_OmlA proteins and hence are likely to function as inhibitory proteins

Designing for emergence and innovation: Redesigning design

We reveal the surprising and counterintuitive truth that the design process, in and of itself, is not always on the forefront of innovation. Design is a necessary but not a sufficient condition for the success of new products and services. We intuitively sense a connection between innovative design and emergence. The nature of design, emergence and innovation to understand their interrelationships and interdependencies is examined. We propose that design must harness the process of emergence; for it is only through the bottom-up and massively iterative unfolding of emergence that new and improved products and services are successfully refined, introduced and diffused into the marketplace. The relationships among design, emergence and innovation are developed. What designers can learn from nature about emergence and evolution that will impact the design process is explored. We examine the roles that design and emergence play in innovation. How innovative organizations can incorporate emergence into their design process is explored. We demarcate the boundary between invention and innovation. We also articulate the similarities and differences of design and emergence. We then develop the following three hypotheses: Hypothesis 1: “An innovative design is an emergent design.” Hypothesis 2: “A homeostatic relationship between design and emergence is a required condition for innovation.”Hypothesis 3: “Since design is a cultural activity and culture is an emergent phenomenon, it follows that design leading to innovation is also an emergent phenomenon” We provide a number of examples of how design and emergence have worked together and led to innovation. Examples include the tool making of early man; the evolutionary chain of the six languages speech, writing, math, science, computing and the Internet; the Gutenberg printing press and techniques of collaborative filtering associated with the Internet. We close by describing the relationship between human and naturally “designed” systems and the notion a key element of a design is its purpose as is the case with a living organism

Addressing the welfare needs of farmed lumpfish: knowledge gaps, challenges and solutions

Lumpfish (Cyclopterus lumpus L.) are increasingly being used as cleaner fish to control parasitic sea lice, one of the most important threats to salmon farming. However, lumpfish cannot survive feeding solely on sea lice, and their mortality in salmon net pens can be high, which has welfare, ethical and economic implications. The industry is under increasing pressure to improve the welfare of lumpfish, but little guidance exists on how this can be achieved. We undertook a knowledge gap and prioritisa tion exercise using a Delphi approach with participants from the fish farming sector, animal welfare, academia and regulators to assess consensus on the main challenges and potential solutions for improving lumpfish welfare. Consensus among participants on the utility of 5 behavioural and 12 physical welfare indicators was high (87–89%), reliable (Cronbach's alpha = 0.79, 95CI = 0.69–0.92) and independent of participant background. Participants highlighted fin erosion and body damage as the most use ful and practical operational welfare indicators, and blood parameters and behav ioural indicators as the least practical. Species profiling revealed profound differences between Atlantic salmon and lumpfish in relation to behaviour, habitat preferences, nutritional needs and response to stress, suggesting that applying a common set of welfare standards to both species cohabiting in salmon net-pens may not work well for lumpfish. Our study offers 16 practical solutions for improving the welfare of lumpfish and illustrates the merits of the Delphi approach for achieving consensus among stakeholders on welfare needs, targeting research where is most needed and generating workable solutions.info:eu-repo/semantics/publishedVersio