Author Details

Affiliations
1 National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Anna University Campus, Chennai 600 025, IN

Source

Current Science, Vol 114, No 03 (2018), Pagination: 445-446

Abstract

Rhodoliths are nodular form of marine free-living, non-geniculate, crustose coralline red algae, resembling the corals. The communities, in which they dominate are referred to as ‘rhodolith beds’, ‘rhodolites’ or ‘maerl’. Rhodoliths assume different sizes, shapes and forms (small thalli-like, twig-like, large round shaped, branching/unbranching, etc.) based on different factors such as water motion, bioturbation, grazing, fouling, bleaching, etc..

Full Text

References

Foster, M. S., J. Phycol., 2001, 37, 659–667; https://doi.org/10.1046/j.1529-8817.2001.00195.x

Piller, W. E. and Rasser, M., Coral Reefs, 1996, 15, 191–198; https://doi.org/10.1007/BF01145891

Foster, M. S., Filho, G. M. A., Kamenos, N. A., Riosmena-Rodriguez, R. and Steller, D. L., In Research and Discoveries: The Revolution of Science through SCUBA (eds Lang, M. A. et al.), Smithsonian contributions to the marine sciences number, series 39. Smithsonian Institution Scholarly Press, Washington, DC, 2013, pp. 143–155; https://doi.org/10.5479/si.1943667X.39

Littler, M. M. and Littler, D. S., In Research and Discoveries: The Revolution of Science through SCUBA (eds Lang, M. A. et al.), Smithsonian contributions to the marine sciences number, series 39. Smithsonian Institution Scholarly Press, Washington, DC, 2013, pp. 199–212.

Gagnon, P., Matheson, K. and Stapleton, M., Bot. Mar., 2012, 55, 85–99; https://doi.org/10.1515/bot-2011-0064

Kundal, P. and Dharashivkar, A. P., Curr. Sci., 2005, 88(10), 1684–1689.

Dinabandhu, S. and Nivedita, D., Seaweeds of Indian Coast, 2001, p. 283.

Reyes-Bonilla, H., Riosmena-Rodriguez, R. and Foster, M. S., Pac. Sci., 1997, 51(3), 328–337.

Differential Bleaching Patterns in Corals of Palk Bay and the Gulf of Mannar

Abstract Views :212 | PDF Views:76

Authors

P. Krishnan ¹, R. Purvaja ¹, C. R. Sreeraj ¹, R. Raghuraman ¹, R. S. Robin ¹, K. R. Abhilash ¹, R. S. Mahendra ², A. Anand ³, M. Gopi ¹, P. C. Mohanty ², K. Venkataraman ¹, R. Ramesh ¹

Affiliations
1 National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Anna University Campus, Chennai 600 025, IN
2 Indian National Centre for Ocean Information Services, Hyderabad 500 090, IN
3 Regional Remote Sensing Centre, Indian Space Research Organisation, Nagpur 440 010, IN

Source

Current Science, Vol 114, No 03 (2018), Pagination: 679-685

Abstract

The status of reefs in Palk Bay and the Gulf of Mannar was studied during April–May 2016 following a bleach alert, as the sea surface temperature recorded a sudden increase from 30.5°C to 34.0°C in Gulf of Mannar. About 71.48% ± 8.9% of the corals in Palk Bay and 46.04% ± 3.78% in Thoothukkudi group of Islands in Gulf of Mannar were found bleached, showing a clearly decreasing trend from north to south, which could be attributed to the corresponding pattern in intensity of SST recorded in the study sites. Observations of bleaching patterns among different life-forms showed 68% of the bleached corals were massive forms. It was observed that 22 out of the 26 massive forms were bleached, while the Acropora corymbose (ACC), digitate (ACD) and encrusting coral (CE) forms were not bleached in any of the study sites in Palk Bay and Gulf of Mannar. The study suggests that the ACC, ACD and CE forms have adapted to thermal stress, subsequent to the earlier mass bleaching events. The study highlights the need for understanding the molecular mechanism of the association between corals and the symbiotic algae, for further understanding on coral bleaching in Indian waters.

Keywords

Adaptive Coral Bleaching, Gulf of Mannar, Palk Bay.

Full Text

References

Hughes, T. P. et al., Climate change, human impacts, and the resilience of coral reefs. Science, 2003, 301, 929–933.

Hoegh-Guldberg, O. and Smith, G. J., The effect of sudden changes in temperature, light and salinity on the population density and export of zooxanthellae from the reef corals Stylophora pistillata Esper and Seriatopora hystrix Dana. J. Exp. Mar. Biol. Ecol., 1989, 129, 279–303.

Moberg, F. and Folke, C., Ecological goods and services of coral reef ecosystems. Ecol. Econ., 1999, 29, 215–233.

Chandrasekaran, S., Nagendran, N. A., Pandiaraja, D., Krishnankutty, N. and Kamalakannan, B., Bioinvasion of Kappaphycus alvarezii on corals in the Gulf of Mannar, India. Curr. Sci., 2008, 94, 1167–1172.

Kamalakannan, B., Jeevamani, J. J. J., Nagendran, N. A., Pandiaraja, D., Krishnan Kutty, N. and Chandrasekaran, S., Turbinaria sp. as victims to Kappaphycus alvarezii in reefs of Gulf of Mannar, India. Coral Reefs, 2010, 29, 1077.

Ajith Kumar, T. T. and Balasubramanian, T., A window view. In Proceedings of the 12th International Coral Reef Symposium, Cairns, Australia, 2012, p. 4.

English, S., Wilkinson, C. and Baker, V., Survey Manual for Tropical Resources. Australian Institute of Marine Science, 1997, p. 378.

Edinger, E. N. and Risk, M. J., Reef classification by coral morphology predicts coral reef conservation value. Biol. Conserv., 2009, 92, 1–13.

Marshall, P. and Schuttenberg, H., A reef manager’s guide to coral bleaching. Great Barrier Reef Marine Park Authority, Townsville, Australia, 2006, pp. 1–163.

Veron, J. E. N., Corals of the World. Australian Institute of Marine Science, Townsville Australia, 2000, vol. 1–3, p. 382.

Jaswal, A. K., Singh, V. and Bhambak, S. R., Relationship between sea surface temperature and surface air temperature over Arabian Sea, Bay of Bengal and Indian Ocean. J. Indian Geophys. Union, 2012, 16(2), 41–53.

Reaser, J. K., Pomerance, R. and Thomas, P. O., Coral bleaching and global climate change: scientific findings and policy recommendations. Conserv. Biol., 2000, 14, 1500–1511.

Raghuraman, R., Sreeraj, C. R., Raghunathan, C. and Venkataraman, K., Scleractinian Coral Diversity in Andaman and Nicobar Islands in Comparison with other Indian Reefs, Uttar Pradesh State Biodiversity Board, 2012, pp. 75–92.

Arthur, R., Coral bleaching and mortality in three Indian reef regions during an El-niño southern oscillation event. Curr. Sci., 2000, 79(12), 1723–1729.

Venkataraman, K., Status of Coral Reefs of Gulf of Mannar, India. In 9th International Coral Reef Symposium, Bali, Indonesia, 2000, p. 35.

Kumaraguru, A. K., Jayakumar, K. and Ramakritinan, C. M., Coral bleaching 2002 in the Palk Bay, southeast coast of India. Curr. Sci., 2003, 85(12), 1787–1793.

Edward, J. K. P., Mathews, G., Raj, K. D. and Tamelander, J., Coral reefs of the Gulf of Mannar, Southeastern India – observations on the effect of elevated SST during 2005–2008. In Proceedings of the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida, USA, 2008, pp. 1286–1288.

Ravindran, J., Kannapiran, E., Manikandan, B., Mani Murali, R. and Joseph, A., Bleaching and secondary threats on the corals of Palk Bay: a survey and Proactive conservation needs. Ind. J. Geomar. Sci., 2012, 41(1), 19–26.

Palmer, C. V., Bythell, J. C. and Willis, B. L., Levels of immunity parameters underpin bleaching and disease susceptibility of reef corals. FASEB J., 2010, 24, 1935–1946.

Edward, J. K. P., Mathews, G., Raj, K. D., Thinesh, T., Patterson, J., Tamelander, J. and Wilhelmsson, D., Coral reefs of Gulf of Mannar, India – signs of resilience. In Proceedings of the 12th International Coral Reef Symposium, Cairns, Australia, 2012, p. 5.

Fitt, W. K., Brown, B. E., Warner, M. E. and Dunne, R. P., Coral bleaching: interpretation of thermal tolerance limits and thermal thresholds in tropical corals. Coral Reefs, 2001, 20, 51–65.

Rowan, R., Coral bleaching: thermal adaptation in reef coral symbionts. Nature, 2004, 430, 742.

Baker, A. C., Symbiont diversity on coral reefs and its relationship to bleaching resistance and resilience. In Coral Health and Disease (eds Rosenberg, E. and Loya, Y.), Springer-Verlag, Heidelberg, 2004, pp. 177–194.

Santos, S. R., Gutiérrez-Rodriguez, C., Lasker, H. R. and Coffroth, M. A., Symbiodinium sp. associations in the gorgonian Pseudopterogorgia elisabethae in the Bahamas: high levels of genetic variability and population structure in symbiotic dinoflagellates. Mar. Biol., 2003, 143, 111–120.

Goulet, T. L., Most corals may not change their symbionts. Mar. Ecol. Prog. Ser., 2006, 321, 1–7.

Buddemeier, R. W. and Fautin, D. G., Coral bleaching as an adaptive mechanism: a testable hypothesis. Bioscience, 1993, 43, 320–326.

Buddemeier, R. W., Baker, A. C., Fautin, D. G. and Jacobs, J. R., The adaptive hypothesis of bleaching. In Coral Health and Disease (eds Rosenberg, E. and Loya, Y.), Springer-Verlag, Springer, Berlin, Heidelberg, 2004, pp. 427–444.

Fautin, D. G. and Buddemeier, R. W., Adaptive bleaching: a general phenomenon. Hydrobiologia, 2004, 530/531, 459–467.

Guest, J. R. et al., Contrasting patterns of coral bleaching susceptibility in 2010 suggest an adaptive response to thermal stress. PLoS ONE, 2012, 7(3), 1–8.

Vinoth, R., Gopi, M., Ajith Kumar, T. T., Tangaradju, T. and Balasubramanian, T., J. Ocena Univ. China, 2012, 11(1), 105–110.

Krishnan, P. et al., Elevated sea surface temperature during May 2010 induced mass bleaching of corals in the Andaman. Curr. Sci., 2011, 100(1), 111–117.

Sadhukhan, K. and Raghunathan, C., Diversity and abundance of Scleractinia corals in Car Nicobar Island, India. Int. J. Plant. An. Environ. Sci., 2011, 1(3), 150–157.

Username
Password
Remember me