50 Years of Cetacean Strandings Reveal a Concerning Rise in Chilean Patagonia

Mario Alvarado-Rybak, Frederick Toro, Joaquín Escobar-Dodero, Amy C. Kinsley, Maximiliano A. Sepúlveda, Juan Capella, Claudio Azat, Galaxia Cortés-Hinojosa, Natalia Zimin-Veselkoff, Fernando O. Mardones

Resultado de la investigación: Contribución a una revistaArtículo

Resumen

Cetacean strandings (CS) have been reported in increasing numbers in coastal areas worldwide. Although the causes of these strandings are unknown, a number of anthropogenic and environmental factors have been suggested. This paper aims to characterize CS patterns and describe their fine-scale spatiotemporal dynamics. We analysed spatial and spatiotemporal CS patterns in Chile from January 1968 to January 2020. We identified a total of 389 CS events affecting eight cetacean families, 21 genera, and 35 species, which represent more than 85% of the reported species richness for the country. Most CS events (94.1%) were single (i.e., ≤two individuals). There were also 18 mass stranding (three to 24 individuals, 4.1%) and nine unusually large mass stranding events (>25 individuals, 2%). Purely spatial tests showed CS events appearing in random occurrence along the Chilean coast. Local tests for spatio-temporal clusters, however, identified a greater number of hotspots reported in the southernmost part of the country, namely, Chilean Patagonia. Specifically, significant spatio-temporal clusters were identified and defined as containing three or more individuals within a two-month period as a focal coastal event (<1 km radius). It is a cause of concern that CS events in Chile have been increasing consistently over the last decades, and although we were not able to identify their causes, we are able to highlight the importance of changes in climate conditions and of an increase in monitoring activities as primary drivers for such patterns, particularly important in Chilean Patagonia.

Idioma originalInglés
Número de artículo9511
PublicaciónScientific Reports
Volumen10
N.º1
DOI
EstadoPublicada - 1 dic 2020

Áreas temáticas de ASJC Scopus

  • General

Huella Profundice en los temas de investigación de '50 Years of Cetacean Strandings Reveal a Concerning Rise in Chilean Patagonia'. En conjunto forman una huella única.

  • Citar esto

    Alvarado-Rybak, M., Toro, F., Escobar-Dodero, J., Kinsley, A. C., Sepúlveda, M. A., Capella, J., Azat, C., Cortés-Hinojosa, G., Zimin-Veselkoff, N., & Mardones, F. O. (2020). 50 Years of Cetacean Strandings Reveal a Concerning Rise in Chilean Patagonia. Scientific Reports, 10(1), [9511]. https://doi.org/10.1038/s41598-020-66484-x