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Featured researches published by Stefan Gelcich.


Proceedings of the National Academy of Sciences of the United States of America | 2010

Navigating transformations in governance of Chilean marine coastal resources

Stefan Gelcich; Terry P. Hughes; Per Olsson; Carl Folke; Omar Defeo; Miriam Fernández; Simon Foale; Lance Gunderson; Carlos Rodríguez-Sickert; Marten Scheffer; Robert S. Steneck; Juan Carlos Castilla

Marine ecosystems are in decline. New transformational changes in governance are urgently required to cope with overfishing, pollution, global changes, and other drivers of degradation. Here we explore social, political, and ecological aspects of a transformation in governance of Chiles coastal marine resources, from 1980 to today. Critical elements in the initial preparatory phase of the transformation were (i) recognition of the depletion of resource stocks, (ii) scientific knowledge on the ecology and resilience of targeted species and their role in ecosystem dynamics, and (iii) demonstration-scale experimental trials, building on smaller-scale scientific experiments, which identified new management pathways. The trials improved cooperation among scientists and fishers, integrating knowledge and establishing trust. Political turbulence and resource stock collapse provided a window of opportunity that triggered the transformation, supported by new enabling legislation. Essential elements to navigate this transformation were the ability to network knowledge from the local level to influence the decision-making processes at the national level, and a preexisting social network of fishers that provided political leverage through a national confederation of artisanal fishing collectives. The resultant governance scheme includes a revolutionary national system of marine tenure that allocates user rights and responsibilities to fisher collectives. Although fine tuning is necessary to build resilience of this new regime, this transformation has improved the sustainability of the interconnected social–ecological system. Our analysis of how this transformation unfolded provides insights into how the Chilean system could be further developed and identifies generalized pathways for improved governance of marine resources around the world.


BioScience | 2012

Questioning the Rise of Gelatinous Zooplankton in the World's Oceans

Robert H. Condon; William M. Graham; Carlos M. Duarte; Kylie Anne Pitt; Cathy H. Lucas; Steven H. D. Haddock; Kelly R. Sutherland; Kelly L. Robinson; Michael N Dawson; Mary Beth Decker; Claudia E. Mills; Jennifer E. Purcell; Alenka Malej; Hermes Mianzan; Shin-ichi Uye; Stefan Gelcich; Laurence P. Madin

During the past several decades, high numbers of gelatinous Zooplankton species have been reported in many estuarine and coastal ecosystems. Coupled with media-driven public perception, a paradigm has evolved in which the global ocean ecosystems are thought to he heading toward being dominated by “nuisance” jellyfish. We question this current paradigm by presenting a broad overview of gelatinous Zooplankton in a historical context to develop the hypothesis that population changes reflect the human-mediated alteration of global ocean ecosystems. To this end, we synthesize information related to the evolutionary context of contemporary gelatinous Zooplankton blooms, the human frame of reference for changes in gelatinous Zooplankton populations, and whether sufficient data are available to have established the paradigm. We conclude that the current paradigm in which it is believed that there has been a global increase in gelatinous Zooplankton is unsubstantiated, and we develop a strategy for addressing the critical questions about long-term, human-related changes in the sea as they relate to gelatinous Zooplankton blooms.


Ecosystems | 2006

Co-management Policy Can Reduce Resilience in Traditionally Managed Marine Ecosystems

Stefan Gelcich; Gareth Edwards-Jones; Michel J. Kaiser; Juan Carlos Castilla

Best-practice environmental policy often suggests co-management of marine resources as a means of achieving sustainable development. Here we consider the impacts of superimposing co-management policy, in the form of territorial user rights for fishers over an existing traditional community-based natural-resource management system in Chile. We consider a broad definition of co-management that includes a spectrum of arrangements between governments and user groups described by different levels of devolution of power. We used participatory rural appraisal techniques and questionnaires to understand the mechanisms that underpin the traditional management system for the bull-kelp “cochayuyo” (Durvillaea antarctica). Traditional management was based on the allocation of informal access rights through a lottery system. This system was controlled by a complex web of traditional institutions that were shown to be successful in terms of equity and resilience. Using a similar approach, we analyzed the effects of superimposing a government-led co-management policy into this traditional system. Two major effects of the new policy were encountered. First, traditional institutions were weakened, which had negative effects on the levels of trust within the community and intensified conflict among users. Second, the management system’s adaptive capacity was reduced, thereby jeopardizing the ecosystem’s resilience. Our results suggest that the devolution of power to this kind of fisher community still has not reached the level required for fishers to legally address the local deficiencies of the Chilean co-management policy. Additionally, legal adjustments must be made to accommodate traditionally managed ecosystems that offer benefits comparable to those mandated under the formal policy. A fuller understanding of the interactions between co-management and traditional institutions can help us to identify ways to promote resilience and facilitate equal access by mitigating the potential negative effects of co-management policy and informing its future implementation.


Environmental Conservation | 2008

Engagement in co-management of marine benthic resources influences environmental perceptions of artisanal fishers

Stefan Gelcich; Michel J. Kaiser; Juan Carlos Castilla; Gareth Edwards-Jones

SUMMARY The perceptions of resource users towards any conservation policy can be a major determinant of its success. While co-management policy can enhance the management of fisheries, to date there have been few reports concerning how engagement in co-management regimes may affect fishers’ perceptions. This paper assesses the determinants of fishers’ environmental perceptions within a comanagement regime in Chile. Group meetings and structured questionnaires showed fishers’ environmental perceptions were composed of four domains of concern, termed ‘water pollution’, ‘stock conservation’, ‘conservation/profit trade-offs’ and ‘charismatic species’. Fishers’ dependence on diving and/or the length of time fishers had engaged with the policy affected their perceptions of each of these domains. Perceptions of the ‘water pollution’ domain were related to length of time fishers had participated in co-management, probably because fishers gained an increased understanding of the market and its need for unpolluted produce. Attitudes towards ‘conservation/profit trade-offs’ tended to become linked to an increasingly conservation-oriented ethic with increasing time of engagement with the policy. Given that the length of time fishers engaged with co-management differentially affected fishers’ perceptions of environmental domains of concern, public officials and funding agencies should be careful not to judge co-management prematurely. It takes time to educate participants and overcome distrust. Through co-management processes in Chile, fishers’ environmental awareness increased, and sustainable behaviours may consequently increase in the future.


Ecological Applications | 2008

ADD-ON CONSERVATION BENEFITS OF MARINE TERRITORIAL USER RIGHTS FISHERY POLICIES IN CENTRAL CHILE

Stefan Gelcich; Natalio Godoy; Luis Valenzuela Prado; Juan Carlos Castilla

To combine the rational use of marine benthic resources and economic development of small-scale fishers, Chile passed legislation in 1991 establishing a comanagement policy that grants exclusive territorial user rights for fisheries (TURFs) to artisanal fisher organizations in well-defined inshore coastal areas, known as Management and Exploitation Areas for Benthic Resources (MEABRs). In general the policy has been proclaimed a management and economic success because benthic resource abundances have increased inside MEABRs in comparison with open-access areas. However, there is a lack of studies assessing the impact of this management policy on nontargeted subtidal species and community assemblages and the policys implications for biodiversity and conservation. This study starts to fill this gap and links the allocation of TURFs for benthic resources with add-on conservation benefits for species that are not directly linked with the fishery policy. Comparative subtidal surveys inside vs. outside MEABRs were used to assess the effects of three MEABRs on managed targeted benthic species, biodiversity (species richness), and community assemblages in central Chile. Surveys focused exclusively on subtidal kelp forest habitats dominated by Lessonia trabeculata, spanning 4-12 m in depth and with similar levels of habitat complexity. The study comprised: (1) quantification of kelp forest complexity, (2) understory survey of sessile species, (3) quantification of conspicuous benthic macroinvertebrates, including those under management, and (4) quantification of reef-fish species inside the kelp habitat. Results showed population enhancement of target-managed invertebrates inside MEABRs. Moreover, reef-fish species were significantly more diverse and abundant inside MEABRs, and community assemblages of nontarget benthic invertebrates and reef fish were significantly different inside vs. outside MEABRs. The comanagement of inshore benthic resources in Chile, through MEABRs aims for the sustainability of invertebrate and algae stocks. However, our study shows that this management tool, which in practice restricts access to the entire management area, provides important conservation add-on effects for species that are not the focus of the management policies. Therefore, in Chile, the hundreds of already established MEABRs could represent an important ancillary network, which complements the biodiversity objectives of fully protected areas such as no-take marine protected areas or others.


Proceedings of the National Academy of Sciences of the United States of America | 2014

Public awareness, concerns, and priorities about anthropogenic impacts on marine environments

Stefan Gelcich; Paul Buckley; John K. Pinnegar; Jason Chilvers; Irene Lorenzoni; Geraldine Terry; Matías Guerrero; Juan Carlos Castilla; Abel Valdebenito; Carlos M. Duarte

Significance We report the results of a 10,106-person pan-European survey of public awareness, concerns, and priorities about marine anthropogenic impacts as a way to inform both science and policy initiatives in achieving marine sustainability. Results enable scientists and policymakers to understand how the public relates to the marine environment and how they frame impacts and can help make managerial, scientific, and policy priorities more responsive to public values. Numerous international bodies have advocated the development of strategies to achieve the sustainability of marine environments. Typically, such strategies are based on information from expert groups about causes of degradation and policy options to address them, but these strategies rarely take into account assessed information about public awareness, concerns, and priorities. Here we report the results of a pan-European survey of public perceptions about marine environmental impacts as a way to inform the formation of science and policy priorities. On the basis of 10,106 responses to an online survey from people in 10 European nations, spanning a diversity of socioeconomic and geographical areas, we examine the public’s informedness and concern regarding marine impacts, trust in different information sources, and priorities for policy and funding. Results show that the level of concern regarding marine impacts is closely associated with the level of informedness and that pollution and overfishing are two areas prioritized by the public for policy development. The level of trust varies greatly among different information sources and is highest for academics and scholarly publications but lower for government or industry scientists. Results suggest that the public perceives the immediacy of marine anthropogenic impacts and is highly concerned about ocean pollution, overfishing, and ocean acidification. Eliciting public awareness, concerns, and priorities can enable scientists and funders to understand how the public relates to marine environments, frame impacts, and align managerial and policy priorities with public demand.


Conservation Biology | 2012

Territorial User Rights for Fisheries as Ancillary Instruments for Marine Coastal Conservation in Chile

Stefan Gelcich; Miriam Fernández; Natalio Godoy; Antonio Canepa; Luis Prado; Juan Carlos Castilla

Territorial user rights for fisheries have been advocated as a way to achieve sustainable resource management. However, few researchers have empirically assessed their potential as ancillary marine conservation instruments by comparing them to no-take marine protected areas. In kelp (Lessonia trabeculata) forests of central Chile, we compared species richness, density, and biomass of macroinvertebrates and reef fishes among territorial-user-right areas with low-level and high-level enforcement, no-take marine protected areas, and open-access areas in 42 100-m subtidal transects. We also assessed structural complexity of the kelp forest and substratum composition. Multivariate randomized permutation tests indicated macroinvertebrate and reef fish communities associated with the different access regimes differed significantly. Substratum composition and structural complexity of kelp forest did not differ among access regimes. Univariate analyses showed species richness, biomass, and density of macroinvertebrates and reef fishes were greater in highly enforced territorial-user-right areas and no-take marine protected areas than in open-access areas. Densities of macroinvertebrates and reef fishes of economic importance were not significantly different between highly enforced territorial-user-right and no-take marine protected areas. Densities of economically important macroinvertebrates in areas with low-level enforcement were significantly lower than those in areas with high-level enforcement and no-take marine protected areas but were significantly higher than in areas with open access. Territorial-user-right areas could be important ancillary conservation instruments if they are well enforced.


Society & Natural Resources | 2005

Using Discourses for Policy Evaluation: The Case of Marine Common Property Rights in Chile

Stefan Gelcich; Gareth Edwards-Jones; Michel J. Kaiser; Elizabeth E. Watson

ABSTRACT In an attempt to combine marine conservation and economic development, the Chilean government introduced a policy that gives formal property rights over defined areas of seabed to artisanal fishers. This study used discourse analysis to understand the impacts and consequences of this policy. Story lines based on sustainability, livelihood maintenance, and historical right claims are mechanisms by which three different groups of fishers adopted postures toward the policy and each other. These act as a means of legitimizing claims when adapting to conditions generated by the policy and also vindicate poaching between syndicates, thereby jeopardizing the whole system. Results show the fishing groups studied adopt the policy for different reasons than those espoused by government during its development. Discourse analysis assists the understanding of actors’ policy responses and provides an insightful tool to investigate incentives and dominance of particular sets of ideas in a comanagement framework.


Frontiers in Ecology and the Environment | 2014

A practical approach for putting people in ecosystem‐based ocean planning

John N. Kittinger; J. Zachary Koehn; Elodie Le Cornu; Natalie C. Ban; Morgan Gopnik; Matt Armsby; Cassandra M. Brooks; Mark H. Carr; Joshua E. Cinner; Amanda E. Cravens; Mimi D'Iorio; Ashley L. Erickson; Elena M. Finkbeiner; Melissa M. Foley; Rod Fujita; Stefan Gelcich; Kevin St. Martin; Erin Prahler; Daniel R. Reineman; Janna M. Shackeroff; Crow White; Margaret R. Caldwell; Larry B. Crowder

Marine and coastal ecosystems provide important benefits and services to coastal communities across the globe, but assessing the diversity of social relationships with oceans can prove difficult for conservation scientists and practitioners. This presents barriers to incorporating social dimensions of marine ecosystems into ecosystem-based planning processes, which can in turn affect the success of planning and management initiatives. Following a global assessment of social research and related planning practices in ocean environments, we present a step-by-step approach for natural resource planning practitioners to more systematically incorporate social data into ecosystem-based ocean planning. Our approach includes three sequential steps: (1) develop a typology of ocean-specific human uses that occur within the planning region of interest; (2) characterize the complexity of these uses, including the spatiotemporal variability, intensity, and diversity thereof, as well as associated conflicts and compati...


Frontiers in Ecology and the Environment | 2014

Linking human well-being and jellyfish: ecosystem services, impacts, and societal responses

William M. Graham; Stefan Gelcich; Kelly L. Robinson; Carlos M. Duarte; Lucas Brotz; Jennifer E. Purcell; Laurence P. Madin; Hermes Mianzan; Kelly R. Sutherland; Shin-ichi Uye; Kylie Anne Pitt; Cathy H. Lucas; Molly Bogeberg; Richard D. Brodeur; Robert H. Condon

Jellyfish are usually perceived as harmful to humans and are seen as “pests”. This negative perception has hindered knowledge regarding their value in terms of ecosystem services. As humans increasingly modify and interact with coastal ecosystems, it is important to evaluate the benefits and costs of jellyfish, given that jellyfish bloom size, frequency, duration, and extent are apparently increasing in some regions of the world. Here we explore those benefits and costs as categorized by regulating, supporting, cultural, and provisioning ecosystem services. A geographical perspective of human vulnerability to jellyfish over four categories of human well-being (health care, food, energy, and freshwater production) is also discussed in the context of thresholds and trade-offs to enable social adaptation. Whereas beneficial services provided by jellyfish likely scale linearly with biomass (perhaps peaking at a saturation point), non-linear thresholds exist for negative impacts to ecosystem services. We sugge...

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Juan Carlos Castilla

Pontifical Catholic University of Chile

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Natalio Godoy

Pontifical Catholic University of Chile

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Miriam Fernández

Pontifical Catholic University of Chile

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Carlos M. Duarte

King Abdullah University of Science and Technology

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Andrés Marín

Pontifical Catholic University of Chile

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David J. Pannell

University of Western Australia

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Marit E. Kragt

University of Western Australia

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Steven Schilizzi

University of Western Australia

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