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Patterns of selectiveness in the Amazonian freshwater fisheries: implications for management

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  • Gustavo Hallwass
  • Renato A.M. Silvano

Abstract

Tropical fisheries, which are considered multi-species, may show selectiveness. We analyzed the degree of selectivity of fish catches in 46 sites along the Amazon basin through the percentage of biomass corresponding to the most caught fish species. Amazonian fisheries were considered moderately selective, as 54% of the sites directed more than a quarter of fishing effort to one fish species and in 87% of the sites more than half the fishing effort was directed to five fish species. Commercial fisheries were more selective than subsistence fisheries. Eleven fish species (nine of them migratory) have received more fishing pressure in the studied Amazonian regions and the catch composition differed among regions. We thus recommend that fisheries management in the Amazon basin should distribute fishing effort among more fish species; incorporate the particularities of commercial and subsistence fisheries; evaluate fishing effects on ecosystem services; and consider the biological characteristics of preferred fish.

Suggested Citation

  • Gustavo Hallwass & Renato A.M. Silvano, 2016. "Patterns of selectiveness in the Amazonian freshwater fisheries: implications for management," Journal of Environmental Planning and Management, Taylor & Francis Journals, vol. 59(9), pages 1537-1559, September.
    • Handle: RePEc:taf:jenpmg:v:59:y:2016:i:9:p:1537-1559
    DOI: 10.1080/09640568.2015.1081587
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    References listed on IDEAS

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    1. Pauly, D., 1979. "Theory and management of tropical multispecies stocks: a review, with emphasis on the Southeast Asian demersal fisheries," Monographs, The WorldFish Center, number 12263, April.
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    1. Jon Marx P. Sarmiento & Queenie Lynly T. Mendez & Leo Manuel B. Estaña & Evette S. Giray & Cleto L. Nañola & Pedro A. Alviola, 2021. "The role of motorized boats in fishers’ productivity in marine protected versus non-protected areas in Davao Gulf, Philippines," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(11), pages 16786-16802, November.

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