Carbon dioxide addition to coral reef waters suppresses net community calcification

  title={Carbon dioxide addition to coral reef waters suppresses net community calcification},
  author={R. Albright and Y. Takeshita and D. Koweek and Aaron T Ninokawa and K. Wolfe and Tanya Rivlin and Yana Nebuchina and Jordan Young and K. Caldeira},
Coral reefs feed millions of people worldwide, provide coastal protection and generate billions of dollars annually in tourism revenue. The underlying architecture of a reef is a biogenic carbonate structure that accretes over many years of active biomineralization by calcifying organisms, including corals and algae. Ocean acidification poses a chronic threat to coral reefs by reducing the saturation state of the aragonite mineral of which coral skeletons are primarily composed, and lowering… Expand
Unexpected role of communities colonizing dead coral substrate in the calcification of coral reefs
Global and local anthropogenic stressors such as climate change, acidification, overfishing, and pollution are expected to shift the benthic community composition of coral reefs from dominance byExpand
Ocean acidification effects on in situ coral reef metabolism
The results show a decrease in 24-h net community calcification (NCC) under high pCO2, and a reduction in nighttime NCC that attenuated and eventually reversed over 21-d, which contribute to previous studies on ecosystem-level responses of coral reefs to the OA conditions projected for the end of the century. Expand
Living coral tissue slows skeletal dissolution related to ocean acidification
It is suggested that areas of the reef with relatively low coral mortality, where living coral cover is high, are likely to be resistant to carbon dioxide-induced reef dissolution, and elevated carbon dioxide impairs net calcification of living corals and may accelerate dissolution of dead corals. Expand
Carbon Isotopic Fractionation in Organic Matter Production Consistent With Benthic Community Composition Across a Coral Reef Flat
Carbon fluxes on coral reefs (net community production and net community calcification) aggregate the collective activity of all coral reef community members. This integrated approach providesExpand
Coral Reef Carbonate Chemistry Variability at Different Functional Scales
There is a growing recognition for the need to understand how seawater carbonate chemistry over coral reef environments will change in a high-CO2 world to better assess the impacts of oceanExpand
Coral reef carbonate budgets and ecological drivers in the central Red Sea – a naturally high temperature and high total alkalinity environment
Abstract. The structural framework provided by corals is crucial for reef ecosystem function and services, but high seawater temperatures can be detrimental to the calcification capacity ofExpand
Dimethylsulfide (DMS), marine biogenic aerosols and the ecophysiology of coral reefs
Abstract. Global climate change and the impacts of ocean warming, ocean acidification and declining water quality are adversely affecting coral-reef ecosystems. This is of great concern, as coralExpand
Ocean acidification alters early successional coral reef communities and their rates of community metabolism
It is demonstrated that ocean acidification as predicted for the end of this century will strongly alter reef communities, and will significantly change rates of community metabolism. Expand
Current and future trophic interactions in tropical shallow-reef lagoon habitats
Calcium carbonate (CaCO 3 ) sediments are the dominant form of CaCO 3 on coral reefs accumulating in lagoon and inter-reefal areas. Owing to their mineralogy and a range of physical parameters,Expand
Contrasting Changes in Diel Variations of Net Community Calcification Support That Carbonate Dissolution Can Be More Sensitive to Ocean Acidification Than Coral Calcification
Previous studies have found that calcification in coral reefs is generally stronger during the day, whereas dissolution is prevalent at night. On the basis of these contrasting patterns, the dielExpand


Reversal of ocean acidification enhances net coral reef calcification
Approximately one-quarter of the anthropogenic carbon dioxide released into the atmosphere each year is absorbed by the global oceans, causing measurable declines in surface ocean pH, carbonate ionExpand
Ocean acidification and coral reefs: effects on breakdown, dissolution, and net ecosystem calcification.
It is proposed that standardized NEC rates combined with observed changes in the ratios of dissolved inorganic carbon to total alkalinity owing to net reef metabolism may provide a biogeochemical tool to monitor the effects of OA in coral reef environments. Expand
Diel Variability in Seawater pH Relates to Calcification and Benthic Community Structure on Coral Reefs
Key aspects of coral reef ecosystem structure and function are presently related to natural diurnal variability in pH, documented from three reefs in the central Pacific. Expand
Losers and winners in coral reefs acclimatized to elevated carbon dioxide concentrations
Experiments have shown that ocean acidification due to rising atmospheric carbon dioxide concentrations has deleterious effects on the performance of many marine organisms(1-4). However, fewExpand
Risks to coral reefs from ocean carbonate chemistry changes in recent earth system model projections
Coral reefs are among the most biodiverse ecosystems in the world. Today they are threatened by numerous stressors, including warming ocean waters and coastal pollution. Here we focus on theExpand
ENCORE: the effect of nutrient enrichment on coral reefs. Synthesis of results and conclusions.
The ENCORE experiment investigated responses of coral reef organisms and processes to controlled additions of dissolved inorganic nitrogen and phosphorus on an offshore reef at the southern end of the Great Barrier Reef, Australia, and showed that reef organism and processes investigated in situ were impacted by elevated nutrients. Expand
Future reef decalcification under a business-as-usual CO2 emission scenario
The study explores the impact of anthropogenic ocean warming and acidification on intact coral reef assemblages using large-scale, replicated mesocosms that simulate future conditions under natural levels of seasonal variability to demonstrate the influence of multiple variables within regimes that include diurnal and seasonal variability. Expand
Coral reefs may start dissolving when atmospheric CO2 doubles
[1] Calcification rates in stony corals are expected to decline significantly in the near future due to ocean acidification. In this study we provide a global estimate of the decline in calcificationExpand
Coral Reefs Under Climate Change and Ocean Acidification: Challenges and Opportunities for Management and Policy
Carbon emissions in an industrialized world have created two problems for coral reefs: climate change and ocean acidification. Climate change drives ocean warming, which impacts biological andExpand
Photosynthesis and Calcification at Cellular, Organismal and Community Levels in Coral Reefs: A Review on Interactions and Control by Carbonate Chemistry
SYNOPSIS. Photosynthesis and calcification in zooxanthellate scleractinian corals and coral reefs are reviewed at several scales: cellular (pathways and transport mechanisms of inorganic carbon andExpand