Sentences with phrase «reef calcification in»

Not exact matches

Higher concentrations of chlorophyll in the areas of pronounced reef growth suggests that an abundance of food may provide the excess energy needed for calcification in waters with low aragonite saturation.

Emerging evidence for variability in the coral calcification response to acidification, geographical variation in bleaching susceptibility and recovery, responses to past climate change, and potential rates of adaptation to rapid warming supports an alternative scenario in which reef degradation occurs with greater temporal and spatial heterogeneity than current projections suggest.

Researchers carry out innovative basic and applied research programs in coral reef biology, ecology, and geology; fish biology, ecology, and conservation; shark and billfish ecology; fisheries science; deep - sea organismal biology and ecology; invertebrate and vertebrate genomics, genetics, molecular ecology, and evolution; microbiology; biodiversity; observation and modeling of large - scale ocean circulation, coastal dynamics, and ocean atmosphere coupling; benthic habitat mapping; biodiversity; histology; and calcification.

Here we show that CaCO3 dissolution in reef sediments across five globally distributed sites is negatively correlated with the aragonite saturation state (Ωar) of overlying seawater and that CaCO3 sediment dissolution is 10-fold more sensitive to ocean acidification than coral calcification.

I will describe efforts in the Florida Keys to characterize the spatial and temporal variability of the carbonate chemistry of the water and the net community production and calcification of the reef community.

Calcification in the Ocean, Impacts of Climate Change on Marine Calcification (Coral Reefs and Shellfish), Ocean Acidification, Records of Climate Change in Coral Skeletons, Geochemistry of Calcium Carbonate Shells and Skeletons, Development of New Proxies for Ocean Climate

However, the counteracting effects of climate change on the reef calcification, on other biological processes and the carbonate system need to be investigated in more detail.

For example, the resulting changes in ocean salinity and pH can inhibit calcification in shell - bearing organisms that are either habitat - forming (e.g., coral reefs, oyster reefs) or the foundation of food webs (e.g., plankton)(The Copenhagen Diagnosis 2009).

The team found that rates of reef calcification were 40 percent lower in 2008 and 2009 than they were during the same season in 1975 and 1976.

Doubling the partial pressure of CO2 above seawater leads to a decrease in calcification of 9 — 29 % and 4 — 8 % for coccolithophores and foraminifera, respectively, and of 9 — 59 % for reef - building corals.

In order to establish a cause - and - effect relationship between acidification and decreased calcification, a team led by Carnegie's Ken Caldeira and including Jacob Silverman (the lead author) and Kenneth Schneider, formerly of Carnegie, compared measurements of the rate of calcification in one segment of Australia's Great Barrier Reef called Bird Island that were taken in between 1975 and 1979 to those made at the neighboring Lizard Island in 2008 and 200In order to establish a cause - and - effect relationship between acidification and decreased calcification, a team led by Carnegie's Ken Caldeira and including Jacob Silverman (the lead author) and Kenneth Schneider, formerly of Carnegie, compared measurements of the rate of calcification in one segment of Australia's Great Barrier Reef called Bird Island that were taken in between 1975 and 1979 to those made at the neighboring Lizard Island in 2008 and 200in one segment of Australia's Great Barrier Reef called Bird Island that were taken in between 1975 and 1979 to those made at the neighboring Lizard Island in 2008 and 200in between 1975 and 1979 to those made at the neighboring Lizard Island in 2008 and 200in 2008 and 2009.

Work from another team led by Caldeira found that rates of reef calcification were 40 percent lower in 2008 and 2009 than they were during the same season in 1975 and 1976.

Coral reefs will also be affected by rising atmospheric CO2 concentrations (Orr et al., 2005; Raven et al., 2005; Denman et al., 2007, Box 7.3) resulting in declining calcification.