Publications

Export 2 results:
Sort by: Author Title Type [ Year  (Desc)]
2016
Edmunds, PJ, Comeau S, Lantz C, Andersson A, Briggs C, Cohen A, Gattuso JP, Grady JM, Gross K, Johnson M, Muller EB, Ries JB, Tambutte S, Tambutte E, Venn A, Carpenter RC.  2016.  Integrating the effects of ocean acidification across functional scales on tropical coral reefs. Bioscience. 66:350-362.   10.1093/biosci/biw023   AbstractWebsite

There are concerns about the future of coral reefs in the face of ocean acidification and warming, and although studies of these phenomena have advanced quickly, efforts have focused on pieces of the puzzle rather than integrating them to evaluate ecosystem-level effects. The field is now poised to begin this task, but there are information gaps that first must be overcome before progress can be made. Many of these gaps focus on calcification at the levels of cells, organisms, populations, communities, and ecosystem, and their closure will be made difficult by the complexity of the interdependent processes by which coral reefs respond to ocean acidification, with effects scaling from cells to ecosystems and from microns to kilometers. Existing ecological theories provide an important and largely untapped resource for overcoming these difficulties, and they offer great potential for integrating the effects of ocean acidification across scales on coral reefs.

2011
Mackenzie, FT, Andersson AJ, Arvidson RS, Guidry MW, Lerman A.  2011.  Land-sea carbon and nutrient fluxes and coastal ocean CO(2) exchange and acidification: Past, present, and future. Applied Geochemistry. 26:S298-S302.   10.1016/j.apgeochem.2011.03.087   AbstractWebsite

Epochs of changing atmospheric CO(2) and seawater CO(2)-carbonic acid system chemistry and acidification have occurred during the Phanerozoic at various time scales. On the longer geologic time scale, as sea level rose and fell and continental free board decreased and increased, respectively, the riverine fluxes of Ca, Mg, DIC, and total alkalinity to the coastal ocean varied and helped regulate the C chemistry of seawater, but nevertheless there were major epochs of ocean acidification (OA). On the shorter glacial-interglacial time scale from the Last Glacial Maximum (LGM) to late preindustrial time, riverine fluxes of DIC, total alkalinity, and N and P nutrients increased and along with rising sea level, atmospheric PCO(2) and temperature led, among other changes, to a slightly deceasing pH of coastal and open ocean waters, and to increasing net ecosystem calcification and decreasing net heterotrophy in coastal ocean waters. From late preindustrial time to the present and projected into the 21st century, human activities, such as fossil fuel and land-use emissions of CO(2) to the atmosphere, increasing application of N and P nutrient subsidies and combustion N to the landscape, and sewage discharges of C, N, P have led, and will continue to lead, to significant modifications of coastal ocean waters. The changes include a rapid decline in pH and carbonate saturation state (modern problem of ocean acidification), a shift toward dissolution of carbonate substrates exceeding production, potentially leading to the "demise" of the coral reefs, reversal of the direction of the sea-to-air flux of CO(2) and enhanced biological production and burial of organic C, a small sink of anthropogenic CO(2), accompanied by a continuous trend toward increasing autotrophy in coastal waters. (C) 2011 Elsevier Ltd. All rights reserved.