Declining Coral Calcification on the Great Barrier Reef
- 2 January 2009
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 323 (5910), 116-119
- https://doi.org/10.1126/science.1165283
Abstract
Reef-building corals are under increasing physiological stress from a changing climate and ocean absorption of increasing atmospheric carbon dioxide. We investigated 328 colonies of massive Porites corals from 69 reefs of the Great Barrier Reef (GBR) in Australia. Their skeletal records show that throughout the GBR, calcification has declined by 14.2% since 1990, predominantly because extension (linear growth) has declined by 13.3%. The data suggest that such a severe and sudden decline in calcification is unprecedented in at least the past 400 years. Calcification increases linearly with increasing large-scale sea surface temperature but responds nonlinearly to annual temperature anomalies. The causes of the decline remain unknown; however, this study suggests that increasing temperature stress and a declining saturation state of seawater aragonite may be diminishing the ability of GBR corals to deposit calcium carbonate.This publication has 26 references indexed in Scilit:
- Shifting climate zones for Australia's tropical marine ecosystemsGeophysical Research Letters, 2008
- One-Third of Reef-Building Corals Face Elevated Extinction Risk from Climate Change and Local ImpactsScience, 2008
- Declining coral calcification in massive Porites in two nearshore regions of the northern Great Barrier ReefGlobal Change Biology, 2007
- Regional Decline of Coral Cover in the Indo-Pacific: Timing, Extent, and Subregional ComparisonsPLOS ONE, 2007
- Preindustrial to Modern Interdecadal Variability in Coral Reef pHScience, 2005
- Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organismsNature, 2005
- Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth centuryJournal of Geophysical Research: Atmospheres, 2003
- Coral record of increased sediment flux to the inner Great Barrier Reef since European settlementNature, 2003
- Approximate Inference in Generalized Linear Mixed ModelsJournal of the American Statistical Association, 1993
- Coral Chronometers: Seasonal Growth Bands in Reef CoralsScience, 1972