Predicción de los “hotspots” de reproducción de la ballena franca austral, Eubalaena australis (Cetartiodactyla: Mysticeti), en la costa sur de Brasil

Autores/as

  • Eduardo Pires Renault-Braga Projeto Franca Austral, Instituto Australis de Pesquisa e Monitoramento Ambiental, - Laboratório de Mamíferos Aquáticos, Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina -Programa de Pós-Graduação em Zoologia, Campus Centro Politécnico, Setor de Ciências Biológicas, Departamento de Zoologia https://orcid.org/0000-0001-5800-2859
  • Karina R. Groch Projeto Franca Austral, Instituto Australis de Pesquisa e Monitoramento Ambiental https://orcid.org/0000-0002-2034-3444
  • Paulo C. Simões-Lopes Projeto Franca Austral, Instituto Australis de Pesquisa e Monitoramento Ambiental - Laboratório de Mamíferos Aquáticos, Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina - Programa de Pós-Graduação em Zoologia, Campus Centro Politécnico, Setor de Ciências Biológicas, Departamento de Zoologia https://orcid.org/0000-0002-7338-3669

DOI:

https://doi.org/10.3989/scimar.05223.031

Palabras clave:

ballena franca austral, Eubalaena australis, Brasil, área reproductiva, modelado de habitat, MaxEnt, datos de “solo presencia”

Resumen


Para predecir los posibles “hotspots” de reproducción de las ballenas francas en el sur de Brasil, utilizamos un modelo Maxent con un conjunto de datos de “solo presencia”. El conjunto de datos se obtuvo de un estudio aéreo sistemático y registros públicos del “Programa de Monitoreo de Cetáceos da Bacia de Santos” y el “Sistema de Apoio ao Monitoramento de Mamíferos Marinhos”. Debido a la autocorrelación espacial, se usaron 528 registros de 3028 en el proceso de modelado. Las variables explicativas empleadas en los modelos fueron la distancia costera, la linealidad, la pendiente y el tipo de sustrato. Los modelos se crearon por separado para adultos no acompañados (Ad) y parejas madre-cría (Fe). Ambos modelos mostraron una buena precisión de acuerdo con sus valores de AUC (área bajo la curva: Ad=0,974; Fe=0,958). La distancia costera fue la variable explicativa más relevante para el modelo de adulto no acompañado (54%), mientras que la linealidad costera fue más relevante para el modelo de pareja madre-cría (82%). El área estimada para las parejas madre-cría estaba más restringida a las áreas costeras en comparación con el área prevista para los adultos no acompañados, posiblemente debido a la gran cantidad de áreas de refugio para las crías cerca de la costa. Este es el primer estudio que predice los posibles “hotspots” de reproducción de las ballenas francas en Brasil y sus resultados permitirán una gestión más dirigida de estas ballenas y brindarán más oportunidades de investigación.

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Publicado

2022-06-15

Cómo citar

1.
Pires Renault-Braga E, Groch KR, Simões-Lopes PC. Predicción de los “hotspots” de reproducción de la ballena franca austral, Eubalaena australis (Cetartiodactyla: Mysticeti), en la costa sur de Brasil. Sci. mar. [Internet]. 15 de junio de 2022 [citado 30 de julio de 2026];86(2):e031. Disponible en: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1920

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