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Coral bleaching recorded during the Little Ice Age
Cedhagen, T. (2021). Coral bleaching recorded during the Little Ice Age. Phuket Mar. Biol. Cent. Res. Bull. 78(1): 21-28. https://dx.doi.org/10.14456/pmbcrb.2021.1
In: Phuket Marine Biological Center. Research bulletin. Phuket Marine Biological Center: Phuket. ISSN 0858-1088, more
Peer reviewed article  

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Author keywords
    coral bleaching, little ice age

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  • Cedhagen, T.

Abstract
    When corals are exposed to stressors such as high solar radiation, sedimentation, pollution, reduced salinity or when water gets warmer or colder than normal, the corals expel the symbiotic algae and, consequently, get bleached. It is widely believed that coral bleaching is a phenomenon first observed less than 50 years ago. However, coral bleaching was first observed more than 150 years ago by Eugen von Ransonnet, during the period called the little ice age (ca. 1300 ca. 1900). This neglected report is highlighted here. Clarification of past-time coral symbiont types could be done by the use of sequencing ancient DNA from old coral specimens in museum collections.

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