Strong and lasting impacts of past global warming on baleen whale and prey abundance
| Autor: | Nils Øien, Ken P. Findlay, Luis A. Pastene, Tom Oosting, Lutz Bachmann, Øystein Wiig, Andrea A. Cabrera, Ramp C, Richard Sears, Simon Berrow, Christian Lydersen, Peter B. Best, Kit M. Kovacs, Carolina P. Dias, Mónica A. Silva, Martine Bérubé, Tore Haug, Rui Prieto, Conor Ryan, Jooke Robbins, Finn Larsen, Paspati A, Gísli A. Víkingsson, David K. Mattila, Richard M. Pace, Chiara Papetti, Per J. Palsbøll, Haydée A. Cunha, Scott Landry, Luciano Dalla Rosa, Mads Peter Heide-Jørgensen, P J Clapham, Eduardo R. Secchi, Elena Schall, Xenia Moreira Lopes |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Whale Ecology Global warming Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Predation Baleen whale Baleen 13. Climate action Abundance (ecology) biology.animal Marine ecosystem 14. Life underwater 0105 earth and related environmental sciences Trophic level |
| DOI: | 10.1101/497388 |
| Popis: | The demography of baleen whales and their prey during the past 30 thousand years was assessed to understand the effects of past rapid global warming on marine ecosystems. Mitochondrial and genome-wide DNA sequence variation in eight baleen whale and seven prey species revealed strong, ocean-wide demographic changes that were correlated with changes in global temperatures and regional oceanographic conditions. In the Southern Ocean baleen whale and prey abundance increased exponentially and in apparent synchrony, whereas changes in abundance varied among species in the more heterogeneous North Atlantic Ocean. The estimated changes in whale abundance correlated with increases in the abundance of prey likely driven by reductions in sea-ice cover and an overall increase in primary production. However, the specific regional oceanographic environment, trophic interactions and species ecology also appeared to play an important role. Somewhat surprisingly the abundance of baleen whales and prey continued to increase for several thousand years after global temperatures stabilized. These findings warn of the potential for dramatic, long-term effects of current climate changes on the marine ecosystem.One Sentence SummaryThe effects of past global warming on marine ecosystems were drastic, system-wide and long-lasting. |
| Databáze: | OpenAIRE |
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