Title |
Climate change disables coral bleaching protection on the Great Barrier Reef
|
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Published in |
Science, April 2016
|
DOI | 10.1126/science.aac7125 |
Pubmed ID | |
Authors |
Tracy D Ainsworth, Scott F Heron, Juan Carlos Ortiz, Peter J Mumby, Alana Grech, Daisie Ogawa, C Mark Eakin, William Leggat |
Abstract |
Coral bleaching events threaten the sustainability of the Great Barrier Reef (GBR). Here we show that bleaching events of the past three decades have been mitigated by induced thermal tolerance of reef-building corals, and this protective mechanism is likely to be lost under near-future climate change scenarios. We show that 75% of past thermal stress events have been characterized by a temperature trajectory that subjects corals to a protective, sub-bleaching stress, before reaching temperatures that cause bleaching. Such conditions confer thermal tolerance, decreasing coral cell mortality and symbiont loss during bleaching by over 50%. We find that near-future increases in local temperature of as little as 0.5°C result in this protective mechanism being lost, which may increase the rate of degradation of the GBR. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Australia | 38 | 16% |
United States | 38 | 16% |
United Kingdom | 13 | 5% |
Canada | 5 | 2% |
Mexico | 4 | 2% |
Germany | 4 | 2% |
Curaçao | 3 | 1% |
Spain | 3 | 1% |
India | 3 | 1% |
Other | 34 | 14% |
Unknown | 99 | 41% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 169 | 69% |
Scientists | 66 | 27% |
Science communicators (journalists, bloggers, editors) | 7 | 3% |
Practitioners (doctors, other healthcare professionals) | 2 | <1% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 4 | <1% |
Germany | 3 | <1% |
Brazil | 3 | <1% |
Malaysia | 2 | <1% |
Australia | 2 | <1% |
Canada | 2 | <1% |
France | 1 | <1% |
South Africa | 1 | <1% |
Netherlands | 1 | <1% |
Other | 5 | <1% |
Unknown | 873 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 199 | 22% |
Student > Ph. D. Student | 148 | 16% |
Researcher | 121 | 13% |
Student > Master | 118 | 13% |
Other | 36 | 4% |
Other | 105 | 12% |
Unknown | 170 | 19% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 269 | 30% |
Environmental Science | 207 | 23% |
Biochemistry, Genetics and Molecular Biology | 80 | 9% |
Earth and Planetary Sciences | 70 | 8% |
Engineering | 14 | 2% |
Other | 65 | 7% |
Unknown | 192 | 21% |