The Costs and Benefits of Environmental Memory for Reef-Building Corals Coping with Recurring Marine Heatwaves.
| Autor: | Brown KT; Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.; School of Biological Sciences, University of Queensland, St. Lucia , QLD 4072, Australia., Barott KL; Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Integrative and comparative biology [Integr Comp Biol] 2022 Dec 30; Vol. 62 (6), pp. 1748-1755. |
| DOI: | 10.1093/icb/icac074 |
| Abstrakt: | Marine heatwaves are occurring more frequently as climate change intensifies, resulting in global mass coral bleaching events several times per decade. Despite the time between marine heatwaves decreasing, there is evidence that reef-building corals can develop increased bleaching resistance across repetitive marine heatwaves. This phenomenon of acclimatization via environmental memory may be an important strategy to ensure coral persistence; however, we still understand very little about the apparent acclimatization or, conversely, sensitization (i.e., stress accumulation or weakening) of reef-building corals to consecutive heatwaves and its implications for the trajectory and resilience of coral reefs. Here, we highlight that not only will some corals become stress hardened via marine heatwaves, but many other individuals will suffer sensitization during repeat heatwaves that further exacerbates their stress response during repeat events and depresses fitness. Under current and predicted climate change, it is necessary to gain a better understanding of the acclimatization vs. sensitization trajectories of different species and individuals on the reef, as well as identify whether changes in bleaching susceptibility relates to physiological acclimatization, trade-offs with other biological processes, and ultimately coral persistence in the Anthropocene. (© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology.) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|