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Mechanisms of reef coral resistance to future climate change
Palumbi, S.R.; Barshis, D.J.; Traylor-Knowles, N.; Bay, R.A. (2014). Mechanisms of reef coral resistance to future climate change. Science (Wash.) 344(6186): 895-898.
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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  • Palumbi, S.R.
  • Barshis, D.J.
  • Traylor-Knowles, N.
  • Bay, R.A.

    Reef corals are highly sensitive to heat, yet populations resistant to climate change have recently been identified. To determine the mechanisms of temperature tolerance, we reciprocally transplanted corals between reef sites experiencing distinct temperature regimes and tested subsequent physiological and gene expression profiles. Local acclimatization and fixed effects, such as adaptation, contributed about equally to heat tolerance and are reflected in patterns of gene expression. In less than 2 years, acclimatization achieves the same heat tolerance that we would expect from strong natural selection over many generations for these long-lived organisms. Our results show both short-term acclimatory and longer-term adaptive acquisition of climate resistance. Adding these adaptive abilities to ecosystem models is likely to slow predictions of demise for coral reef ecosystems.

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