A pesca em comunidades ribeirinhas na região do médio rio Madeira, Rondônia

Abstract

ResumoA importância da pesca na unidade familiar de produção (UFP) e a delimitação dos fatores que a influenciam constituem o hiato na caracterização da atividade em regiões da Amazônia sob iminência de impactos de grandes projetos. Este estudo avaliou a dinâmica e a importância da pesca em UFP de comunidades ribeirinhas à jusante da cachoeira do Teotônio (rio Madeira) e a influência na composição e abundância das espécies capturadas, de fatores ambientais, distância dos mercados e destinação da captura. ) e padrões entre as comunidades que refetem ambos os fatores ambientais, distância do pescado consumidor e destino da captura. AbstractThe fisheries importance in the family unit of production and the identification of factors that influence it, make up the gap in the characterization of the activity in the Amazon region under the impendence of large projects impacts. This study evaluated and compared the dynamics and the importance of fishing in the family unit in riverside communities downstream of Santo Antonio Dam (Madeira River) and, the influence of environmental, isolation and fishing destination in the composition and abundance of the catch. Between August/2009 and July/2010 (pre-dam period), 23 families recorded daily information about the activity to analyze the total catch, monthly and specific fish consumed and marketed and fishing effort. The results show the importance of family fishing (average production: 2.403±2.261kg.family.year ) and that differences between communities are related to both destination, isolation and environmental factors.

Damming Amazon Rivers: Environmental impacts of hydroelectric dams on Brazil’s Madeira River according to local fishers’ perception

“…In the Amazon region alone, fisheries generate input of US$200 million per annum and support a workforce of 200 000 fishers (Tundisi et al 2014). In addition, the per capita fish consumption of Amazonian populations is among the highest in the world and is considered to be both the main source of protein and income for many local communities (Doria et al 2016).…”

<b>Jatuarana fishing dynamics <i>Brycon amazonicus</i> (Spix & Agassiz, 1829) of the upper and middle Madeira River Basin

“…The variations in catch may be related to different factors such as: environmental characteristics, fishing effort, spatial distribution of the fishing fleet, urban demand, and population density among others (Gonçalves & Batista, 2008;Doria, Machado, Souza, & Lima, 2016;Silva Júnior, Raseira, Ruffino, Batista, & Leite, 2017;Tregidgo, Barlow, Pompeu, Rocha, & Parryand, 2017). Often, these factors are correlated and difficult to size with fisheries data (Silva Júnior et al, 2017).…”

Stakeholder Perceptions on the Governance of Fisheries Systems Transformed by Hydroelectric Dam Development in the Madeira River, Brazil

“…Of these landings, 13% is destined to family consumption and 87% for sale. Income obtained from fish sales represents 50-100% of an average riverine family's income (US$ 507 ± 522 in 2009), with the remainder being derived mostly from small-scale agriculture (Doria et al, 2016). Fisheries monitoring data covering two decades prior to dam construction showed relative stability on the catches (Doria et al, 2018a), but catches declined after the Santo Antônio and Jirau dams were built (Lima et al,2020).…”