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Priscila Fabiana Macedo Lopes - One of the best experts on this subject based on the ideXlab platform.

  • The use of Local Ecological Knowledge as a complementary approach to understand the temporal and spatial patterns of Fishery Resources distribution
    Journal of Ethnobiology and Ethnomedicine, 2017
    Co-Authors: Mauro Sergio Pinheiro Lima, Jorge Eduardo Lins Oliveira, Marcelo Francisco De NÓbrega, Priscila Fabiana Macedo Lopes
    Abstract:

    Background Acquiring fast and accurate information on ecological patterns of Fishery Resources is a basic first step for their management. However, some countries may lack the technical and/or the financial means to undergo traditional scientific samplings to get such information; therefore affordable and reliable alternatives need to be sought. Methods We compared two different approaches to identify occurrence patterns and catch for three main fish species caught with bottom-set gillnets used by artisanal fishers from northeast Brazil: (1) scientific on-board record data of small-scale fleet ( n  = 72 trips), and (2) interviews with small-scale fishers on Local Ecological Knowledge (LEK) ( n  = 32 interviews). We correlated (Pearson correlations) the months cited by fishers (LEK) as belonging to the rainy or to the dry season with observed periods of higher and lower precipitation (SK). The presence of the three main fish species at different depths was compared between LEK and SK by Spearman correlations. Spearman correlations were also used to compare the depths of greatest abundance (with the highest Capture per Unit Effort - CPUE) of these species; the CPUEs were descendly ordered. Results Both methods provided similar and complementary bathymetric patterns of species occurrence and catch. The largest catches occured in deeper areas, which also happened to be less intensively fished. The preference for fishing in shallower and less productive areas was mostly due to environmental factors, such as weaker currents and less drifting algae at such depths. Conclusion Both on-board and interview methods were accurate and brought complementary information, even though fishers provided faster data when compared to scientific on-board observations. When time and funding are not limited, integrative approaches such as the one presented here are likely the best option to obtain information, otherwise fishers’ LEK could be a better choice for when a compromise between speed, reliability and cost needs to be reached.

  • the use of local ecological knowledge as a complementary approach to understand the temporal and spatial patterns of Fishery Resources distribution
    Journal of Ethnobiology and Ethnomedicine, 2017
    Co-Authors: Mauro Sergio Pinheiro Lima, Jorge Eduardo Lins Oliveira, Marcelo Francisco De NÓbrega, Priscila Fabiana Macedo Lopes
    Abstract:

    Background Acquiring fast and accurate information on ecological patterns of Fishery Resources is a basic first step for their management. However, some countries may lack the technical and/or the financial means to undergo traditional scientific samplings to get such information; therefore affordable and reliable alternatives need to be sought.

Zhang Zhaohui - One of the best experts on this subject based on the ideXlab platform.

Mauro Sergio Pinheiro Lima - One of the best experts on this subject based on the ideXlab platform.

  • The use of Local Ecological Knowledge as a complementary approach to understand the temporal and spatial patterns of Fishery Resources distribution
    Journal of Ethnobiology and Ethnomedicine, 2017
    Co-Authors: Mauro Sergio Pinheiro Lima, Jorge Eduardo Lins Oliveira, Marcelo Francisco De NÓbrega, Priscila Fabiana Macedo Lopes
    Abstract:

    Background Acquiring fast and accurate information on ecological patterns of Fishery Resources is a basic first step for their management. However, some countries may lack the technical and/or the financial means to undergo traditional scientific samplings to get such information; therefore affordable and reliable alternatives need to be sought. Methods We compared two different approaches to identify occurrence patterns and catch for three main fish species caught with bottom-set gillnets used by artisanal fishers from northeast Brazil: (1) scientific on-board record data of small-scale fleet ( n  = 72 trips), and (2) interviews with small-scale fishers on Local Ecological Knowledge (LEK) ( n  = 32 interviews). We correlated (Pearson correlations) the months cited by fishers (LEK) as belonging to the rainy or to the dry season with observed periods of higher and lower precipitation (SK). The presence of the three main fish species at different depths was compared between LEK and SK by Spearman correlations. Spearman correlations were also used to compare the depths of greatest abundance (with the highest Capture per Unit Effort - CPUE) of these species; the CPUEs were descendly ordered. Results Both methods provided similar and complementary bathymetric patterns of species occurrence and catch. The largest catches occured in deeper areas, which also happened to be less intensively fished. The preference for fishing in shallower and less productive areas was mostly due to environmental factors, such as weaker currents and less drifting algae at such depths. Conclusion Both on-board and interview methods were accurate and brought complementary information, even though fishers provided faster data when compared to scientific on-board observations. When time and funding are not limited, integrative approaches such as the one presented here are likely the best option to obtain information, otherwise fishers’ LEK could be a better choice for when a compromise between speed, reliability and cost needs to be reached.

  • the use of local ecological knowledge as a complementary approach to understand the temporal and spatial patterns of Fishery Resources distribution
    Journal of Ethnobiology and Ethnomedicine, 2017
    Co-Authors: Mauro Sergio Pinheiro Lima, Jorge Eduardo Lins Oliveira, Marcelo Francisco De NÓbrega, Priscila Fabiana Macedo Lopes
    Abstract:

    Background Acquiring fast and accurate information on ecological patterns of Fishery Resources is a basic first step for their management. However, some countries may lack the technical and/or the financial means to undergo traditional scientific samplings to get such information; therefore affordable and reliable alternatives need to be sought.

Chen Liqun - One of the best experts on this subject based on the ideXlab platform.

Gordon R. Munro - One of the best experts on this subject based on the ideXlab platform.

  • limits to the privatization of Fishery Resources
    Land Economics, 2010
    Co-Authors: Colin W Clark, Gordon R. Munro, Rashid U Sumaila
    Abstract:

    A debate is emerging over the extent to which privatization of Fishery Resources is socially desirable. The "pessimists" argue that there are strict limits to socially optimal privatization of such Resources. The "optimists" maintain that there are no effective limits to privatization and that the decades old fear that privatization could, in some cases, lead to resource extinction are of theoretical interest only. We argue here that these fears are, regrettably, not baseless and that there are definite limits to socially desirable privatization. We discuss means by which such limits could be identified on a FisherybyFishery basis.

  • approaches to the economics of the management of high seas Fishery Resources a summary
    Canadian Journal of Economics, 1996
    Co-Authors: Gordon R. Munro
    Abstract:

    There are many factors which have contributed to the Fishery resourc,e management catastrophe off Atlantic Canada. One, which has been given considerable publicity, is the fact that major groundfish stocks off Atlantic Canada extend beyond the boundary of Canada's Exclusive Economic Zone (EEZ) into the remaining high seas, where they are subject to exploitation by fleets of distant water fishing nations. Such exploitation occurs in particular in two segments of the famous Grand Bank which are outside of Canada's jurisdiction, one of which is to be found in the eastern portion of the Grand Bank, and the second in the southern, and which are popularly referred to as the Nose and Tail of the Bank, respectively. Canada has complained bitterly that distant water fleets have seriously overexploited groundfish stocks in the Nose and Tail of the Bank to Canada's great detriment. Fishery Resources which are to be found in both the coastal state EEZ and the adjacent high seas are now commonly referred to as "straddling" fish stocks. The management of such stocks has emerged as a major international renewable resource management problem within the last few years. The difficulty which Canada has encountered with such stocks off her Atlantic coast is but one example of the problem. Many other examples are to be found throughout the world (F.A.O. of the U.N. 1993). So serious has the problem become that the U.N. has convened a major intergovernmental conference to address the issue, the U.N. Conference on Straddling Fish Stocks and Highly Migratory Fish Stocks, hereafter referred to as the U.N. Fish Conference. Let it also be noted in passing that when one talks about the management of high seas Fishery Resources, the real issue at stake is the management of "straddling" fish stocks or the equivalent thereof.1 Fishery Resources wholly confined to the high seas are of little interest.

  • the economic management of high seas Fishery Resources some game theoretic aspects
    1995
    Co-Authors: Veijo Kaitala, Gordon R. Munro
    Abstract:

    At the urging of the 1992 United Nations Conference on the Environment and Development, held in Rio de Janeiro, the United Nations announced in December 1992 the establishment of an intergovernmental U.N. Conference on Highly Migratory and Straddling Stocks, which was scheduled to hold its first full session in July 1993. The conference is to address a critical issue in the management of transboundary Fishery Resources, namely the management of Fishery Resources to be found both within the coastal state 200 mile Exclusive Economic Zone (EEZ) and the adjacent high seas. At the close of the U.N. Third Conference on the Law of the Sea in December 1982, the issue had appeared to be of minor importance. One decade later, the issue had come to be seen as a threat to the New Law of the Sea itself (Kaitala and Munro 1993).

  • The Management of Transboundary Fishery Resources: A Theoretical Overview
    Essays on the Economics of Migratory Fish Stocks, 1991
    Co-Authors: Gordon R. Munro
    Abstract:

    One of the more important resource management issues arising from the implementation of Extended Fisheries Jurisdiction (EFJ) is the management of transboundary, or shared, Fishery Resources. While the issue of transboundary Fishery Resources had, of course, existed before EFJ, there is no question that EFJ, resulting in the almost worldwide establishment of the 200 mile Exclusive Economic Zones (EEZs), greatly magnified the issue. The EEZs collectively encompass Fishery Resources accounting for in excess of 90 percent of the world harvest of fish. In light of the mobility of finfish, at least, it is not surprising that many of the fish, thus encompassed, are found to move from one neighbouring EEZ to another, or to move between the coastal state EEZ and the remaining high seas, or both. Transboundary Fishery Resources are now ubiquitous.

  • The Management of Migratory Fishery Resources in the Pacific: Tropical Tuna and Pacific Salmon
    Essays on the Economics of Migratory Fish Stocks, 1991
    Co-Authors: Gordon R. Munro
    Abstract:

    The focus of this conference is on the North Atlantic. Nonetheless, it is important to recognize that there are other regions in the world that have significant examples of migratory, shared Fishery Resources. This is particularly true of the Pacific, which has probably been influenced to a greater degree by Extended Fisheries Jurisdiction (EFJ) than any other region in the world. In this paper, we shall turn our attention to two of the more prominent Pacific examples of migratory Fishery Resources.