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Water Column Productivity and Temperature Predict Coral Reef Regeneration Across the Indo-Pacific
Scientific Reports
  • Bernhard Riegl, Nova Southeastern University
  • Peter W. Glynn, University of Miami
  • Evie A. Wieters, Pontificia Universidad Catolica de Chile - Las Cruces
  • Samuel J. Purkis, Nova Southeastern University
  • C. D'Angelo, University of Southampton - United Kingdom
  • Joerg Wiedenmann, University of Southampton - United Kingdom
Document Type
Article
Publication Date
2-5-2015
Keywords
  • Nutrient enrichment,
  • El Nino,
  • Climate change,
  • Recovery,
  • Ocean,
  • Susceptibility,
  • Management,
  • Responses,
  • Patterns,
  • Insights
Abstract
Predicted increases in seawater temperatures accelerate coral reef decline due to mortality by heat-driven coral bleaching. Alteration of the natural nutrient environment of reef corals reduces tolerance of corals to heat and light stress and thus will exacerbate impacts of global warming on reefs. Still, many reefs demonstrate remarkable regeneration from past stress events. This paper investigates the effects of sea surface temperature (SST) and water column productivity on recovery of coral reefs. In 71 Indo-Pacific sites, coral cover changes over the past 1-3 decades correlated negative-exponentially with mean SST, chlorophyll a, and SST rise. At six monitoring sites (Persian/Arabian Gulf, Red Sea, northern and southern Galapagos, Easter Island, Panama), over half of all corals were <31 years, implying that measured environmental variables indeed shaped populations and community. An Indo-Pacific-wide model suggests reefs in the northwest and central Indian Ocean, as well as the central west Pacific, are at highest risk of degradation, and those at high latitudes the least. The model pinpoints regions where coral reefs presently have the best chances for survival. However, reefs best buffered against temperature and nutrient effects are those that current studies suggest to be most at peril from future ocean acidification.
Comments

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Additional Comments
FONDECYT grant #s: 1100920, 1130167; Center for Marine Conservation Nucleo Milenio Initiative grant #: P10-033; NERC grant #: NE/I01683X/1; European Research Council grant #: FP/2007-20013; ERC grant agreement #: 311179; EPA agreement #: X994621-94-0; NOAA agreement #: NA09NOS4260253; NSF grant #: OCE-0526361
ORCID ID
0000-0002-6003-9324
ResearcherID
B-8552-2013; F-8807-2011
DOI
10.1038/srep08273
Citation Information
Bernhard Riegl, Peter W. Glynn, Evie A. Wieters, Samuel J. Purkis, et al.. "Water Column Productivity and Temperature Predict Coral Reef Regeneration Across the Indo-Pacific" Scientific Reports Vol. 5 Iss. 8273 (2015) p. 1 - 7 ISSN: 2045-2322
Available at: http://works.bepress.com/bernhard-riegl/5/