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• Habitat & ecosystem

Results

• 2024REPORT

  Reporte del crucero de observación de la vaquita 2024

  Cárdenas-Hinojosa and co-authors · CONANP (Comisión Nacional de Áreas Naturales Protegidas) · CONANP 2024

  This Spanish-language report covers the May 2024 vaquita survey, which searched the Zero Tolerance Area and a new Extension Area next to it from two ships. The team made 9 sightings and recorded 70 acoustic encounters. Expert elicitation gave a 75% probability that 6 to 8 different vaquitas were seen, and most likely no calf, though one animal of about a year old was seen.

  Population & surveys Acoustic monitoring Habitat & ecosystem In Spanish

• 2022RESEARCH

  More vaquita porpoises survive than expected

  Rojas-Bracho and co-authors · Endangered Species Research 48: 225-234 · Peer reviewed · Rojas-Bracho et al. 2022

  The authors report visual surveys in the Zero Tolerance Area in 2019 and 2021 and used expert elicitation to judge how many different vaquitas had been seen. They concluded that between 7 and 15 unique individuals were seen in 2019 and between 5 and 13 in 2021, which is more than a projection from the 2018 estimate would predict. These are counts of animals seen in one small area, and they are not population estimates.

  Population & surveys Gillnets & bycatch Habitat & ecosystem

• 1993LAW

  DECRETO por el que se declara área natural protegida con el carácter de Reserva de la Biosfera, la región conocida como Alto Golfo de California y Delta del Río Colorado, ubicada en aguas del Golfo de California y los municipios de Mexicali, B.C., de Puerto Peñasco y San Luis Río Colorado, Son.

  Presidencia de la República · Diario Oficial de la Federación · DOF 1993

  This presidential decree created the Upper Gulf of California and Colorado River Delta Biosphere Reserve, a protected area of 934,756 hectares around the northern tip of the Gulf. Inside the reserve it declares a total and indefinite ban on hunting and capturing the vaquita, the totoaba and a list of other animals, including dolphins, whales and the California sea lion.

  Policy & enforcement Habitat & ecosystem Conservation efforts In Spanish