Análise Ecológica E Econômica Da Pesca Marinha Por Meio De Indicadores Multiespecíficos

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Análise Ecológica E Econômica Da Pesca Marinha Por Meio De Indicadores Multiespecíficos Ruth Beatriz Mezzalira Pincinato Análise ecológica e econômica da pesca marinha por meio de indicadores multiespecíficos Dissertação apresentada ao Instituto Oceanográfico da Universidade de São Paulo, como parte dos requisitos para obtenção do título de Mestre em Ciências, área de Oceanografia Biológica. Orientado por: Profa. Dra. Maria de los Angeles Gasalla São Paulo 2010 Universidade de São Paulo Instituto Oceanográfico Análise ecológica e econômica da pesca marinha por meio de indicadores multiespecíficos Ruth Beatriz Mezzalira Pincinato Dissertação apresentada ao Instituto Oceanográfico da Universidade de São Paulo, como parte dos requisitos para obtenção do título de Mestre em Ciências, área de Oceanografia Biológica. Julgada em ____/____/____ _____________________________________ _______________ Prof(a). Dr(a). Conceito _____________________________________ _______________ Prof(a). Dr(a). Conceito _____________________________________ _______________ Prof(a). Dr(a). Conceito i Sumário 1. Introdução .................................................................................................... 1 2. Objetivos .................................................................................................... 12 3. Material e métodos .................................................................................... 13 3.1. Compilação e processamento dos dados de estatística pesqueira e de comercialização do pescado ......................................................................... 13 3.2. Classificação das categorias de pescado da estatística pesqueira e da comercialização ............................................................................................ 18 3.2.1. Nível Trófico.................................................................................. 20 3.2.2. Longevidade ................................................................................. 21 3.2.3. Comprimento Máximo ................................................................... 22 3.2.4. Profundidade ................................................................................ 22 3.2.5. Isóbata Máxima de ocorrência ...................................................... 23 3.2.6. Características ecológicas: grupo trófico e habitat ....................... 23 3.3. Análise dos dados ............................................................................... 24 3.3.1. Análise das quantidades desembarcadas e comercializadas ....... 24 3.3.1.1. Indicadores Multiespecíficos .................................................. 24 3.3.1.1.1. Índice Trófico Marinho (ITM) ................................................ 24 3.3.1.1.2. Fishing-in-Balance (FiB) ...................................................... 25 3.3.1.1.3. Longevidade média (Longm) ................................................ 26 3.3.1.1.4. Comprimento-Máximo médio (Lmáxm)................................. 26 3.3.1.1.5. Profundidade média (Profm) ................................................. 26 3.3.1.1.6. Isóbata máxima média (Imáxm) ........................................... 27 3.3.1.1.7. Razão piscívoros/planctívoros (pis/pla) ............................... 27 3.3.1.1.8. Razão pelágicos/demersais (pel/dem)................................. 28 3.3.1.2. Importância relativa das categorias em função das diferentes classes de parâmetros ecológicos .......................................................... 28 3.3.2. Análise das variáveis de preço e quantidades comercializadas ... 29 3.3.2.1. Preço ponderado das categorias de pescado em função dos parâmetros ecológicos ao longo dos anos ............................................. 29 3.3.2.2. Índice do Preço Relativo Logaritmizado (IPRL) ...................... 30 3.3.2.3. Valor total das categorias de pescado ................................... 31 3.3.2.4. Análise inferencial das séries temporais de preço e quantidade comercializada das principais categorias de pescado ............................ 32 3.4. Análises estatísticas ............................................................................ 32 4. Resultados ................................................................................................. 34 4.1. Análise das quantidades desembarcadas e comercializadas ............. 34 4.1.1. Indicadores Multiespecíficos ......................................................... 34 ii 4.1.1.1. Índice Trófico Marinho (ITM) .................................................. 34 4.1.1.2. Fishing-in-Balance (FiB) ......................................................... 35 4.1.1.3. Longevidade média (Longm)................................................... 35 4.1.1.4. Comprimento-Máximo médio (Lmáxm) ................................... 36 4.1.1.5. Profundidade média (Profm) ................................................... 37 4.1.1.6. Isóbata Máxima média (Imáxm) .............................................. 38 4.1.1.7. Razão piscívoros/planctívoros (pis/pla) .................................. 39 4.1.1.8. Razão pelágicos/demersais (pel/dem) ................................... 40 4.1.2. Importância relativa das categorias em função das classes de parâmetros ecológicos ............................................................................... 41 4.1.2.1. Nível Trófico ........................................................................... 41 4.1.2.2. Longevidade ........................................................................... 45 4.1.2.3. Comprimento Máximo ............................................................ 48 4.1.2.4. Profundidade .......................................................................... 52 4.2. Análise das variáveis de preço e quantidades comercializadas .......... 55 4.2.1. Deflação dos preços de comercialização ..................................... 55 4.2.2. Indicadores Multiespecíficos ......................................................... 59 4.2.2.1. Preço médio ponderado em função dos parâmetros bio- ecológicos ao longo dos anos ................................................................ 59 4.2.2.2. Análise inferencial dos dados de mercado ............................. 64 4.2.2.3. Índice do Preço Relativo Logaritmizado (IPRL) ...................... 70 4.2.2.3.1. Série original ........................................................................ 70 4.2.2.3.2. Série interpolada ................................................................. 72 4.2.2.4. Valor total das categorias ....................................................... 73 5. Discussão .................................................................................................. 76 5.1. Índice Trófico Marinho ......................................................................... 77 5.2. Fishing-in-Balance ............................................................................... 79 5.3. Longevidade média, Comprimento-Máximo médio, Profundidade média e Isóbata Máxima média ............................................................................... 80 5.4. Razão piscívoros/planctívoros (pis/pla) ............................................... 82 5.5. Razão pelágicos/demersais (pel/dem) ................................................ 83 5.6. Análise dos dados de mercado e dos indicadores econômicos .......... 84 5.7. Vantagens e desvantagens do uso de indicadores ............................. 89 5.8. Efeitos potenciais das mudanças no ecossistema e manejo .............. 94 6. Conclusões ................................................................................................ 98 7. Referências .............................................................................................. 100 8. Anexos ..................................................................................................... 122 iii Lista de Figuras Figura 1. Área de estudo .................................................................................... 7 Figura 2. Companhia de Entrepostos e Armazéns Gerais de São Paulo em horário de funcionamento. ............................................................... 11 Figura 3. Inflação medida pelo índice de preço ao consumidor no período de 1960 a 2007..................................................................................... 15 Figura 4. Logaritmo do preço em função do nível trófico de cada categoria para o ano de 1984.................................................................................. 31 Figura 5. Índice Trófico Marinho para os dados de desembarques e da comercialização entre 1968 e 2007. ................................................ 34 Figura 6. Fishing-in-Balance para os dados de comercialização e de desembarque entre 1968 e 2007. .................................................... 35 Figura 7. Longevidade média para os dados de comercialização e desembarques no período de 1968 a 2007. .................................... 36 Figura 8. Comprimento Máximo médio para os dados de comercialização e desembarques no período de 1968 a 2007. .................................... 37 Figura 9. Profundidade média para os dados de comercialização e desembarques no período de 1968 a 2007. .................................... 38 Figura 10. Isóbata Máxima média (Imáxm) para os dados de comercialização e desembarques para o período de 1968 a 2007. .............................. 39 Figura 11. Relação piscívoros (pis) e planctívoros (pla) tanto para as quantidades comercializadas como para as desembarcadas. ........ 40 Figura 12. Relação entre pelágicos (pel) e demersais (dem) tanto para as quantidades comercializadas
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