Banca de DEFESA: KASSIO PEREIRA DAS NEVES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : KASSIO PEREIRA DAS NEVES
DATE: 27/02/2025
TIME: 14:30
LOCAL: Laboratório de Ictiologia e Pesca - Bloco 4B
TITLE:

Relationship between deforestation and variations in the fishing dynamics of frugivorous species landed in the Porto Velho fishing market

KEY WORDS:

Fishing; Degradation; Frugivorous Fish; Madeira River; Amazon 

PAGES: 79
BIG AREA: Ciências Agrárias
AREA: Recursos Pesqueiros e Engenharia de Pesca
SUMMARY:

Fishing in the Madeira River is essential to the region, highlighted by the catch of migratory Characiformes and Siluriformes, especially frugivorous species, which rely on the floodplain forest and are vulnerable to the advancing deforestation in the Amazon. This study aims to identify the most commercially important frugivorous species, evaluate their fishing dynamics between 2004 and 2019, and analyze the impact of vegetation loss on landings. CPUE analyses, statistical tests (Shapiro-Wilk and multiple linear regression) with historical data, and interviews with experienced fishers were conducted to understand environmental and fishing changes. Between 2006 and 2021, the Madeira Basin lost 130,957 km² of forest (16.5%) and 25,192 km² of floodplain forest (8%), leading to a 70% reduction in the catch of five frugivorous species. A significant negative correlation was found between deforestation and the CPUE of these species. Sardinha (Triportheus spp.) and tambaqui (Colossoma macropomum) showed variations in biomass caught, influenced by dams, deforestation, and hydrographic changes. Interviews with 51 fishers from riverside communities identified upstream impacts such as plant mortality and water contamination, and downstream issues such as reduced water flow and migration difficulties. Floodplain forest preservation, adapted fishing practices, and integrating traditional knowledge with science are essential for sustainable management, conservation, and the protection of ecosystems and local communities.

COMMITTEE MEMBERS:
Presidente - 2282442 - CAROLINA RODRIGUES DA COSTA DORIA
Interno - ***.701.522-** - MARCELO LUCIAN FERRONATO - UNIR
Externo à Instituição - MARÍLIA HAUSER DOS SANTOS