Rocky reefs fish community data from San Basilio region, Baja California Sur, Mexico

Guerrero-Martinez, Benigno; Meza-Estrada, S. (2023). Rocky reefs fish community data from San Basilio region, Baja California Sur, Mexico. In dataMares: Ecological Monitoring. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0W37WHP

San Basilio, located north of Loreto BCS, is a small bay that is home to a diverse marine ecosystems that sustain a small community of fishers. A research team from the Centro para la Biodiversidad Marina y la Conservación AC and the Gulf of California Marine Program are working to create a knowledge baseline of the biological diversity in the area, which in turn will help the local community, researchers and government begin discussions on the best conservation and management options. This project also seeks to build local capacities that allow fishers and community members in San Basilio and San Juaniquito to be directly involved in fisheries and ecological monitoring efforts to assess the health of San Basilio Bay and its coastal ecosystems.

Contact information: Santiago Dominguez-Sanchez, santiago@gocmarineprogram.org

• 2003 to 2021

• 2023

• Favoretto, Fabio

• Guerrero-Martinez, Benigno
• Meza-Estrada, S.

• Domínguez-Sánchez, Santiago

• Centro para la Biodiversidad Marina y la Conservación (Center for Marine Biodiversity and Conservation)

Data are collected using transect belt methods, using the standardized methodology of the Long-Term Ecological Monitoring Program designed by the Gulf of California Marine Program. Four transects were placed at 20 and 5 meters depth. Since the monitoring is focused on rocky reefs, if the sites monitored does not have a rocky bottom at more than 5 meters, only one depth is surveyed. Fishes are visually counted over a belt transect with a reference area of 50 m x 2 m: first swim over transect, larger demersal fishes are prioritized, whereas on the second swim the focus is on cryptic species. Therefore, the final estimation area is of 250 m squared. Fish sizes are also visually estimated, this measures is then combined to bibliographic data to estimate biomass. Data include historical monitoring sites (PULPITO) from 2009, and more recent data with more extensive effort in 2019 and 2021 for the whole San Basilio region.

Software used: Microsoft Excel. Coordinate system: WGS 1984.

• Baja California Sur (Mexico)
• San Basilio (Baja California Sur, Mexico)
• San Juaniquito (Baja California Sur, Mexico)

• Environmental monitoring
• Fish
• Invertebrates
• Rocky reef

• data

• English
• Spanish; Castilian

Described by

• Rodriguez, A.S, Báez, M, Aburto-Oropeza, O., Arango, G., Masacareñas-Osorio, I., Erisman, B. (2014). Protocolo de Monitoreo: Para Ambientes Marinos Costeros. UC San Diego: Aburto Lab. Retrieved from https://escholarship.org/uc/item/23f1404c

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2023-06-08