Correlations between environmental parameters (depth temperature and solar radiation) and growth parameters (bulk skeletal density, linear extension rate and net calcification rate) of the solitary azooxanthellate coral, Caryophyllia inornata, were investigated along an 8° latitudinal gradient on the western Italian coasts. Net calcification rate correlated positively with both bulk skeletal density and linear extension rate, showing that C. inornata allocates calcification resources evenly to thickening the skeleton and increasing linear growth. Overall, the three growth parameters did not follow gradients in the two environmental parameters, showing a different trend compared to most studies on zooxanthellate corals. However, the results are in agreement with the only previous analysis of an azooxanthellate coral, Leptopsammia pruvoti, studied along the same latitudinal gradient. In a comparison of the response to temperature of all Mediterranean species whose growth has been investigated to date, azooxanthellate corals were more tolerant to temperature increases than zooxanthellate corals.
|Number of pages||10|
|Early online date||23 Feb 2016|
|State||Published - 1 Sep 2016|
Bibliographical noteFunding Information:
Thanks to S. Branchini, F. Gizzi, M. Marinozzi, S. Prantoni and F. Turano for their underwater help and assistance during the sampling procedure. The diving centers Centro Immersioni Pantelleria, Il Pesciolino, Bubble Lounge and Sub Maldive supplied logistic assistance in the field. The Scientific Diving School ( www.sdseducational.org ) supplied technical and logistical support. The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement n° [249930-CoralWarm: Corals and global warming: the Mediterranean versus the Red Sea]. The experiment complied with current Italian law.
© 2016, Springer-Verlag Berlin Heidelberg.
- Caryophyllia inornata
- Global warming
- Linear extension
- Net calcification
- Skeletal density