MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN
The organization of fisheries in the Amazon region is an important theme, since the current management model is based mainly on the closed fishing season policy. This strategy suspends the catching of specific fish stocks and provides subsidies to professional fishers. Thus, the present study analyz...
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Instituto de Pesca
2020-12-01
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| Series: | Boletim do Instituto de Pesca |
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| Online Access: | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1541/1472 |
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| author | Rafael Luis da SILVA Carlos Edwar de Carvalho FREITAS Sandrelly Oliveira INOMATA Lucirene Aguiar de SOUZA Raniere Garcez Costa SOUSA |
| author_facet | Rafael Luis da SILVA Carlos Edwar de Carvalho FREITAS Sandrelly Oliveira INOMATA Lucirene Aguiar de SOUZA Raniere Garcez Costa SOUSA |
| author_sort | Rafael Luis da SILVA |
| collection | DOAJ |
| description | The organization of fisheries in the Amazon region is an important theme, since the current management model is based mainly on the closed fishing season policy. This strategy suspends the catching of specific fish stocks and provides subsidies to professional fishers. Thus, the present study analyzed, through mathematical modeling, the behavioral interfaces of illegal fisheries that occurred between 1992 to 2017 in the Amazon basin, considering the hydrological seasonality and the effect of the presence or absence of the Closed Fishing Season law (CFSL). The data were tabulated and used for the construction of two illegal fishing scenarios. The first showed negative impacts with the absence of the CFSL, indicated by the high number of seizures of illegal catches that occurred during the period in which river water level is rising and showed continued growth over time. However, the second scenario showed apprehension apexes occurring at the beginning of the high-water level and at beginning of the low water level, with a continuous decrease in the seizures of illegal catches due to the new law. Thus, the ecosystem model constructed is a promising instrument for testing hypotheses and for formulating and monitoring management scenarios for fisheries in the region. |
| format | Article |
| id | doaj-art-9f2b32e989b0439281a4bf9f8d91223a |
| institution | OA Journals |
| issn | 0046-9939 1678-2305 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Instituto de Pesca |
| record_format | Article |
| series | Boletim do Instituto de Pesca |
| spelling | doaj-art-9f2b32e989b0439281a4bf9f8d91223a2025-08-20T02:00:42ZengInstituto de PescaBoletim do Instituto de Pesca0046-99391678-23052020-12-0146311210.20950/1678-2305.2020.46.3.588MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASINRafael Luis da SILVA0https://orcid.org/0000-0002-9485-479XCarlos Edwar de Carvalho FREITAS1https://orcid.org/0000-0001-5406-0998Sandrelly Oliveira INOMATA2https://orcid.org/0000-0002-3489-1089Lucirene Aguiar de SOUZA3https://orcid.org/0000-0001-5832-8023Raniere Garcez Costa SOUSA4https://orcid.org/0000-0002-5620-389XUniversidade Federal de Rondônia - UNIR, Departamento de Ciências Pesqueiras, Programa de Pós-Graduação em Ciências Ambientais - PGCAUniversidade Federal do Amazonas - UFAM, Departamento de Ciências PesqueirasUniversidade Federal do Amazonas - UFAM, Departamento de Ciências PesqueirasUniversidade Federal do Amazonas - UFAM, Departamento de Ciências PesqueirasUniversidade Federal de Rondônia - UNIR, Departamento de Ciências Pesqueiras, Programa de Pós-Graduação em Ciências Ambientais - PGCAThe organization of fisheries in the Amazon region is an important theme, since the current management model is based mainly on the closed fishing season policy. This strategy suspends the catching of specific fish stocks and provides subsidies to professional fishers. Thus, the present study analyzed, through mathematical modeling, the behavioral interfaces of illegal fisheries that occurred between 1992 to 2017 in the Amazon basin, considering the hydrological seasonality and the effect of the presence or absence of the Closed Fishing Season law (CFSL). The data were tabulated and used for the construction of two illegal fishing scenarios. The first showed negative impacts with the absence of the CFSL, indicated by the high number of seizures of illegal catches that occurred during the period in which river water level is rising and showed continued growth over time. However, the second scenario showed apprehension apexes occurring at the beginning of the high-water level and at beginning of the low water level, with a continuous decrease in the seizures of illegal catches due to the new law. Thus, the ecosystem model constructed is a promising instrument for testing hypotheses and for formulating and monitoring management scenarios for fisheries in the region.https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1541/1472environmental changesecosystem modelingillegal fishing |
| spellingShingle | Rafael Luis da SILVA Carlos Edwar de Carvalho FREITAS Sandrelly Oliveira INOMATA Lucirene Aguiar de SOUZA Raniere Garcez Costa SOUSA MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN Boletim do Instituto de Pesca environmental changes ecosystem modeling illegal fishing |
| title | MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN |
| title_full | MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN |
| title_fullStr | MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN |
| title_full_unstemmed | MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN |
| title_short | MODELING OF FISH SEIZURES AFTER THE IMPLEMENTATION OF THE CLOSED FISHING SEASON LAW IN THE AMAZON BASIN |
| title_sort | modeling of fish seizures after the implementation of the closed fishing season law in the amazon basin |
| topic | environmental changes ecosystem modeling illegal fishing |
| url | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1541/1472 |
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