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Your search keyword '"Gutierrez, Nicolas L."' showing total 20 results
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20 results on '"Gutierrez, Nicolas L."'

3. A mid-term analysis of progress toward international biodiversity targets

Author

Tittensor, Derek P., Walpole, Matt, Hill, Samantha L. L., Boyce, Daniel G., Britten, Gregory L., Burgess, Neil D., Butchart, Stuart H. M., Leadley, Paul W., Regan, Eugenie C., Alkemade, Rob, Baumung, Roswitha, Bellard, Céline, Bouwman, Lex, Bowles-Newark, Nadine J., Chenery, Anna M., Cheung, William W. L., Christensen, Villy, Cooper, H. David, Crowther, Annabel R., Dixon, Matthew J. R., Galli, Alessandro, Gaveau, Valérie, Gregory, Richard D., Gutierrez, Nicolas L., Hirsch, Tim L., Höft, Robert, Januchowski-Hartley, Stephanie R., Karmann, Marion, Krug, Cornelia B., Leverington, Fiona J., Loh, Jonathan, Lojenga, Rik Kutsch, Malsch, Kelly, Marques, Alexandra, Morgan, David H.W., Mumby, Peter J., Newbold, Tim, Noonan-Mooney, Kieran, Pagad, Shyama N., Parks, Bradley C., Pereira, Henrique M., Robertson, Tim, Rondinini, Carlo, Santini, Luca, Scharlemann, Jörn P. W., Schindler, Stefan, Sumaila, U. Rashid, Teh, Louise S.L., van Kolck, Jennifer, Visconti, Piero, and Ye, Yimin

Published
2014

7. Leadership, social capital and incentives promote successful fisheries

Author

Gutierrez, Nicolas L., Hilborn, Ray, and Defeo, Omar

Subjects
Social capital (Sociology) -- Environmental aspects, Fisheries -- Social aspects -- Environmental aspects, Fish industry -- Social aspects -- Environmental aspects, Fishery management -- Models -- Methods, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

One billion people depend on seafood as their primary source of protein and 25% of the world's total animal protein comes from fisheries (1). Yet a third of fish stocks worldwide are overexploited or depleted (1,2). Using individual case studies, many have argued that community-based co-management (3) should prevent the tragedy of the commons (4) because cooperative management by fishers, managers and scientists often results in sustainable fisheries (3,5,6). However, general and multidisciplinary evaluations of co-management regimes and the conditions for social, economic and ecological success within such regimes are lacking. Here we examine 130 co-managed fisheries in a wide range of countries with different degrees of development, ecosystems, fishing sectors and type of resources. We identified strong leadership as the most important attribute contributing to success, followed by individual or community quotas, social cohesion and protected areas. Less important conditions included enforcement mechanisms, long-term management policies and life history of the resources. Fisheries were most successful when at least eight co-management attributes were present, showing a strong positive relationship between the number of these attributes and success, owing to redundancy in management regulations. Our results demonstrate the critical importance of prominent community leaders and robust social capital (7), combined with clear incentives through catch shares and conservation benefits derived from protected areas, for successfully managing aquatic resources and securing the livelihoods of communities depending on them. Our study offers hope that co-management, the only realistic solution for the majority of the world's fisheries, can solve many of the problems facing global fisheries., Fish are a critical natural resource, yet global catches have peaked while human populations and demand for seafood continue to rise (1).This increasing pressure has coincided with most fisheries worldwide [...]

Published
2011
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8. CONSERVATION TARGETS: A mid-term analysis of progress toward international biodiversity targets

Author

Tittensor, Derek P., Walpole, Matt, Hill, Samantha L. L., Boyce, Daniel G., Britten, Gregory L., Burgess, Neil D., Butchart, Stuart H. M., Leadley, Paul W., Regan, Eugenie C., Alkemade, Rob, Baumung, Roswitha, Bellard, Céline, Bouwman, Lex, Bowles-Newark, Nadine J., Chenery, Anna M., Cheung, William W. L., Christensen, Villy, Cooper, David H., Crowther, Annabel R., Dixon, Matthew J. R., Galli, Alessandro, Gaveau, Valérie, Gregory, Richard D., Gutierrez, Nicolas L., Hirsch, Tim L., Höft, Robert, Januchowski-Hartley, Stephanie R., Karmann, Marion, Krug, Cornelia B., Leverington, Fiona J., Loh, Jonathan, Lojenga, Rik Kutsch, Malsch, Kelly, Marques, Alexandra, Morgan, David H. W., Mumby, Peter J., Newbold, Tim, Noonan-Mooney, Kieran, Pagad, Shyama N., Parks, Bradley C., Pereira, Henrique M., Robertson, Tim, Rondinini, Carlo, Santini, Luca, Scharlemann, Jörn P. W., Schindler, Stefan, Sumaila, Rashid U., Teh, Louise S.L., van Kolck, Jennifer, Visconti, Piero, and Ye, Yimin

Published
2014
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9. Spatial patterns in population dynamics of the scallop Psychrochlamys patagonica at the northern edge of its range

Author

Gutierrez, Nicolas L. and Defeo, Omar

Subjects
Spatial behavior in animals -- Research -- Physiological aspects -- Behavior, Biological sciences, Zoology and wildlife conservation, Physiological aspects, Research, Behavior
Abstract

ABSTRACT Spatial patterns in the population dynamics of the scallop Psychrochlamys patagonica were analyzed in Uruguayan waters of the southwestern Atlantic Ocean between 35°50'S (northern edge of the species distribution) [...]

Published
2005

11. Applying a New Ensemble Approach to Estimating Stock Status of Marine Fisheries around the World

Author

Rosenberg, Andrew, Kleisner, Kristin M, Afflerbach, Jamie, Anderson, Sean C., Dickey-Collas, Mark, Cooper, Andrew B., Fogarty, Michael J., Fulton, Elizabeth A., Gutierrez, Nicolas L., Hyde, Kimberly J.W., Jardim, Ernesto, Jensen, Olaf P., Kristiansen, Trond, Longo, Catherine, Minte-Vera, Carolina V., Minto, Coilin, Mosqueira, Iago, Osio, Giacomo Chato, Ovando, Daniel, Selig, Elizabeth R, Thorson, James T., Walsh, Jessica C., and Ye, Yimin

Subjects
landings, global fisheries, data-limited fisheries, fisheries exploitation status, food security, superensemble, ecosystem sustainability, management
Abstract

The exploitation status of marine fisheries stocks worldwide is of critical importance for food security, ecosystem conservation, and fishery sustainability. Applying a suite of data-limited methods to global catch data, combined through an ensemble modeling approach, we provide quantitative estimates of exploitation status for 785 fish stocks. Fifty-three percent (414 stocks) are below B-MSY and of these, 265 are estimated to be below 80% of the B-MSY level. While the 149 stocks above 80% of B-MSY are conventionally considered "fully exploited," stocks staying at this level for many years, forego substantial yield. Our results enable managers to consider more detailed information than simply a categorization of stocks as "fully" or "over" exploited. Our approach is reproducible, allows consistent application to a broad range of stocks, and can be easily updated as new data become available. Applied on an ongoing basis, this approach can provide critical, more detailed information for resource management for more exploited fish stocks than currently available.

Published
2018

15. Co-management in Latin American small-scale shellfisheries : assessment from long-term case studies

Author

Defeo, Omar, Castrejon, Mauricio, Perez-Castaneda, Roberto, Castilla, Juan C., Gutierrez, Nicolas L., Essington, Timothy E., Folke, Carl, Defeo, Omar, Castrejon, Mauricio, Perez-Castaneda, Roberto, Castilla, Juan C., Gutierrez, Nicolas L., Essington, Timothy E., and Folke, Carl

Abstract

Co-management (Co-M), defined as the sharing of management tasks and responsibilities between governments and local users, is emerging as a powerful institutional arrangement to redress fisheries paradigm failures, yet long-term assessments of its performance are lacking. A comparative analysis of five small-scale Latin American shellfisheries was conducted to identify factors suggesting success and failure. In Chile, Uruguay and Mexico Co-M produced positive effects, including stabilization of landings at low levels, increase in abundance, CPUE, unit prices and revenues per unit of effort, and reduced interannual variability in several fishery indicators, particularly in landings. Co-M was successful because it was mainly bottom-up implemented and accompanied by-catch shares (spatial property rights and community quotas). By contrast, Co-M implementation was unable to prevent the collapse of the Galapagos sea cucumber fishery, as reflected by a decrease in abundance and CPUE. Negative effects were also observed in the Galapagos spiny lobster fishery during Co-M implementation. However, recovery was observed in recent years, reflected in a stabilization of fishing effort and the highest CPUE and economic revenues observed since the beginning of the Co-M implementation phase. The combined effects of market forces, climate variability and a moratorium on fishing effort were critical in fishery recovery. We conclude that Co-M is not a blueprint that can be applied to all shellfisheries to enhance their governability. These social-ecological systems need to be managed by jointly addressing problems related to the resources, their marine environment and the people targeting them, accounting for their socioeconomic and cultural contexts.

Published
2016
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