Dear MARMAM community, On behalf of myself and my co-authors, we are pleased to announce the publication of our paper in “Science Advances”. “Ocean warming threatens southern right whale population recovery” Whales contribute to marine ecosystem functioning, and they may play a role in mitigating climate change and supporting the Antarctic krill (Euphausia superba) population, a keystone prey species that sustains the entire Southern Ocean (SO) ecosystem. By analyzing a five-decade (1971–2017) data series of individual southern right whales (SRWs; Eubalaena australis) photo-identified at Península Valdés, Argentina, we found a marked increase in whale mortality rates following El Niño events. By modeling how the population responds to changes in the frequency and intensity of El Niño events, we found that such events are likely to impede SRW population recovery and could even cause population decline. Such outcomes have the potential to disrupt food-web interactions in the SO, weakening that ecosystem’s contribution to the mitigation of climate change at a global scale. M. Agrelo, F. G. Daura-Jorge, V. J. Rowntree, M. Sironi, P. S. Hammond, S. N. Ingram, C. F. Marón, F. O. Vilches, J. Seger, R. Payne, P. C. Simões-Lopes, Ocean warming threatens southern right whale population recovery. Sci. Adv. 7, eabh2823 (2021). The paper is available on the following link: https://www.science.org/doi/10.1126/sciadv.abh2823 For further information on this publication please contact me at maca.agrelo@gmail.com Thank you! Macarena Macarena Agrelo [image: ] Ph.D. student of Ecology Laboratório de Mamíferos Aquáticos Universidade Federal de Santa Catarina | Brasil Researcher at the Instituto de Conservación de Ballenas www.ballenas.org.ar | Argentina