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Projected Near-Future Levels of Temperature and pCO(2) Reduce Coral Fertilization Success

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dc.contributor Australian Inst Marine Sci
dc.contributor Australian Institute Of Marine Science MASON, BENJAMIN ALBRIGHT, REBECCA 2017-03-21T01:03:03Z 2013-03-27T06:32:59Z 2017-03-21T01:03:03Z 2020-07-20T00:20:57Z 2013-03-27T06:32:59Z 2013-03-27T06:32:59Z 2017-03-21T01:03:03Z 2020-07-20T00:20:57Z 2013-02-14
dc.identifier.citation Albright R, Mason B (2013) Projected Near-Future Levels of Temperature and pCO2 Reduce Coral Fertilization Success. PLoS ONE 8(2): e56468. en_US
dc.identifier.issn 1932-6203
dc.description.abstract Increases in atmospheric carbon dioxide (pCO(2)) are projected to contribute to a 1.1-6.4 degrees C rise in global average surface temperatures and a 0.14-0.35 reduction in the average pH of the global surface ocean by 2100. If realized, these changes are expected to have negative consequences for reef-building corals including increased frequency and severity of coral bleaching and reduced rates of calcification and reef accretion. Much less is known regarding the independent and combined effects of temperature and pCO(2) on critical early life history processes such as fertilization. Here we show that increases in temperature (+3 degrees C) and pCO(2) (+400 mu atm) projected for this century negatively impact fertilization success of a common Indo-Pacific coral species, Acropora tenuis. While maximum fertilization did not differ among treatments, the sperm concentration required to obtain 50% of maximum fertilization increased 6- to 8- fold with the addition of a single factor (temperature or CO2) and nearly 50- fold when both factors interact. Our results indicate that near-future changes in temperature and pCO(2) narrow the range of sperm concentrations that are capable of yielding high fertilization success in A. tenuis. Increased sperm limitation, in conjunction with adult population decline, may have severe consequences for coral reproductive success. Impaired sexual reproduction will further challenge corals by inhibiting population recovery and adaptation potential.
dc.description.sponsorship This project was supported by an Australian Research Council fellowship awarded to RA and by the Australian Institute of Marine Science. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
dc.language English
dc.language.iso en_US en_US
dc.publisher PLoS ONE en_US
dc.relation.ispartof Null
dc.relation.ispartof PLoS ONE en_US
dc.subject Elevated-temperature
dc.subject Survivorship
dc.subject Settlement
dc.subject Ocean Acidification
dc.subject Scleractinian Corals
dc.subject Decline
dc.subject Sperm Limitation
dc.subject Motility
dc.subject Impact
dc.subject Reef Corals
dc.subject Recruitment
dc.subject Sea
dc.subject Climate-change
dc.subject Multidisciplinary Sciences
dc.subject Acropora-palmata
dc.subject Science & Technology - Other Topics
dc.title Projected Near-Future Levels of Temperature and pCO(2) Reduce Coral Fertilization Success
dc.type journal article en_US
dc.identifier.doi 10.1371/journal.pone.0056468
dc.identifier.wos WOS:000315602700074

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