Banca de QUALIFICAÇÃO: KAREN MARINA SILVA LUCCHINI

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE: KAREN MARINA SILVA LUCCHINI
DATA : 12/11/2024
LOCAL: VIDEOCONFERÊNCIA
TÍTULO:

Seven years of monitoring franciscana dolphin stranding events in Brazil

PALAVRAS-CHAVES:

Pontoporia blainvillei. Fishing activities. Pontoporiidae. Beach Monitoring Projects.

PÁGINAS: 20
RESUMO:

The franciscana dolphin (Pontoporia blainvillei) is a Critically Endangered cetacean, endemic to the southwest Atlantic. The primary threats to this species are capture in fishing activities (bycatch) and habitat destruction. Here, we investigated the stranding database of P. blainvillei on the Brazilian coast obtained from the Beach Monitoring Projects (Projeto de Monitoramento de Praias - PMPs) in the Campos-Espírito Santo and Santos Basins, along the coastline of Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ) and Espírito Santo (ES) states, compilated on the SIMBA platform. The PMPs are part of the environmental requirements of IBAMA for licensing oil and gas exploration. We aimed to evaluate the spatiotemporal distribution of these records and investigate their relationship with data from the Global Fishing Watch platform, which tracks industrial fishing activity. We analysed 3,894 stranding records from 2016 to 2022, with an annual average of 556.29 (±22.10 SE). We detected more strandings in the second semester, with a peak cycle of approximately one year. Females and calves were significantly less frequent among the stranded animals. However, sex or age data were unavailable to around 53% and 22% of the records, respectively, due to variations in the decomposition stage of the carcasses. The northern regions of SC and central SP showed the highest number of strandings. Both areas are port zones with a high flow of vessels. We found a significant relationship between industrial fishing activity up to 50 meters of depth, the area known to be used by the species, and the number of franciscana dolphin strandings. We show that the population of P. blainvillei is likely to suffer significant impacts in fishing areas and areas with heavy vessel traffic.

MEMBROS DA BANCA:
Externo à Instituição - FLAVIO JOSE DE LIMA SILVA
Interno - ***.200.594-** - ARTUR CAMPOS DALIA MAIA - UFPE
Presidente - 2088859 - BRUNA MARTINS BEZERRA
Interno - 2320121 - JOAO LUCAS LEAO FEITOSA