A recent study by the Central Marine Fisheries Research Institute (CMFRI) has revealed alarming findings about the devastating impact of marine heatwaves on coral reefs in the Lakshadweep Sea. Since late October 2023, the region has been experiencing prolonged periods of abnormally high ocean temperatures, triggering widespread coral bleaching.
Marine heatwaves, rare extreme weather events characterized by significantly elevated ocean temperatures, have caused severe bleaching across various islands in the Lakshadweep archipelago. According to researchers, the heat stress levels have reached a point where corals are losing their symbiotic algae, compromising their survival.
Senior scientist K.R. Sreenath emphasized the gravity of the situation, stating that continued heat stress could lead to unprecedented biodiversity loss, impacting not only coral reefs but also other critical marine habitats such as seagrass meadows. The degradation of these ecosystems threatens the livelihoods of coastal communities dependent on marine resources for tourism and fisheries.
Shelton Padua, another senior scientist at CMFRI, identified excessive heat atmospheric transfer and shifts in ocean currents as the primary causes of marine heatwaves. These conditions have persisted in the Lakshadweep Sea, with temperatures consistently registering rises greater than 1 degree Celsius above normal levels.
The economic implications of the coral bleaching crisis are significant, with disruptions in vital ecosystem services affecting tourism and fisheries sectors. Moreover, the death and disintegration of coral reefs could leave coastal communities vulnerable to sea level rise.
Dr. Sreenath warned that urgent action is needed to mitigate the impacts of marine heatwaves and protect marine biodiversity in the Lakshadweep region. Without intervention, the consequences could be dire, not only for the environment but also for the millions of people whose lives depend on healthy marine ecosystems.
Source-The Hindu
