The Palaeocene sediment of the Tiruchirapalli area shows presence of some elements of geniculate and non-geniculate coralline Algae. Four coralline algal species are recorded from this Formation (Thanetian age). Two of the described species belong to Sporolithon. Of the remaining two, one is assigned to Coralline, while the other one is indeterminate, being referred to the subfamily Melobesioid...

The primary productivity of four species of crustose coralline algae was measured as a function of depth (0–18 m) and irradiance on samples collected from and growing upon the windward coral reef at Lizard Island, northern Great Barrier Reef, Australia. Significantly higher productivities were measured in the field than in the laboratory. Maximum gross oxygen production in situ varied from 12.8...

Coralline algae are globally distributed benthic primary producers that secrete calcium carbonate skeletons. In the context of ocean acidification, they have received much recent attention due to the potential vulnerability of their high-Mg calcite skeletons and their many important ecological roles. Herein, we summarize what is known about coralline algal ecology and physiology, providing cont...

Ocean acidification caused by rising atmospheric CO₂ is predicted to negatively impact growth and calcification rates of coralline algae. Decreases in coralline abundance may have cascading effects on marine ecosystems and on carbon sequestration worldwide. In this study, we measured growth and calcification rates of three common species of articulated coralline algae (Bossiella plumosa, Callia...

Rhodoliths are benthic calcium carbonate nodules accreted by crustose coralline red algae which recently have been identified as useful indicators of biomineral changes resulting from global climate change and ocean acidification. This study highlights the discovery that the interior of rhodoliths are marine biodiversity hotspots that function as seedbanks and temporary reservoirs of previously...

Calcifying organisms secrete a range of substances that act as regulators of calcium carbonate (CaC03) nucleation and precipitation. An organic matrix. such as a protein-polysaccharide complex, is almost universally associated with biological calcification[ 1.21. The coralline algae (Corallinales, Florideophycae) are a family of marine red algae (Rhodophyta) characterized by heavy deposition of...