The World Meteorological Organization’s State of the Climate in Asia 2024 report warns that the region is warming nearly twice as fast as the global average, driving more extreme weather and posing serious threats to lives, ecosystems, and economies. In 2024, Asia experienced its warmest or second warmest year on …
It extends to about 300 km between Rameswaram and Thoothukudi; there are 3,600 marine species in the area Ramanathapuram THE increasing growth of coral reefs in the Gulf of Mannar region proves that the measures taken to check mining of coral has paid dividends. A recent study by experts has …
Climate change is a serious environmental challenge that could undermine the drive for sustainable development. Since the industrial revolution, the mean surface temperature of earth has increased an average of 1degree celsius per century due to the accumulation of greenhouse gases in the atmosphere. Furthermore, most of this change has …
To keep coral reefs from being eaten away by increasingly acidic oceans, humans need to limit the amount of climate-warming greenhouse gases in the atmosphere, a panel of marine scientists said on Wednesday. "The most logical and critical action to address the impacts of ocean acidification on coral reefs is …
Jeremy Jackson, director of the Scripps Center for Marine Biodiversity and Conservation, cites the synergistic effects of habitat destruction, overfishing, ocean warming, increased acidification and massive nutrient runoff as culprits in a grand transformation of once complex ocean ecosystems. Areas that had featured intricate marine food webs with large animals …
Viruses are the most abundant biological organisms of the world's oceans. Viral infections are a substantial source of mortality in a range of organisms
Viruses that infect microbes in deep-sea sediments may be a key driver in the world's largest ecosystem and integral to the global carbon cycle, data reveal.
Conservation zones in the Indian Ocean set up to protect fish stocks are not preventing coral reefs from collapsing due to warmer temperatures or helping to speed their recovery, researchers reported on Wednesday. The reason is many of these non-fishing areas are located in warmer waters where coral reefs have …
Dead zones in the coastal oceans have spread exponentially since the 1960s and have serious consequences for ecosystem functioning. The formation of dead zones has been exacerbated by the increase in primary production and consequent worldwide coastal eutrophication fueled by riverine runoff of fertilizers and the burning of fossil fuels. …
This report card builds upon the evidence base presented in 2006, highlighting key developments and exploring new subject areas (coastal erosion, coastal habitats and air
The Food and Agriculture Organisation has issued a caution on the repercussions of climate change on fisheries and aquaculture. It is that the changes seen in the seas and oceans will have direct implications for food security. This is particularly relevant to developing countries where about 42 million people work …
It is just as well that the Centre is now seriously considering an alternative route for the Sethusamudram ship channel project. The idea of dredging the sea in shallow coastal waters to allow large seagoing vessels to pass around peninsular India is not new. Various alignments for the proposed channel …
Prabhakar Rao Voruganti | ENS THE Supreme Court on Tuesday heard inconclusive arguments on the Ramar Sethu issue. As soon as the hearing commenced, Roxena Swamy , wife of Subramanian Swamy , told a bench comprising Chief Justice K G Balakrishnan, Justice R V Raveendran and Justice J M Panchal …
By Christopher Pala Off the palm-fringed white beach of Butaitari, Kiribati, the view underwater is downright scary. Corals are being covered and smothered to death by a bushy seaweed that is so tough even algae-grazing fish avoid it. It settles in the reef's crevices that fish once called home, driving …
London: The fragile marine ecosystems of Antarctica are facing a growing risk from icebergs floating freely in coastal waters due to global warming, a research has suggested. A group of scientists from the British Antarctic Survey (BAS) has found that while iceberg scour is a natural phenomenon, the rate of …
acidic oceans: Dissolved CO2 makes water more acidic. UK researchers saw a fall in the species numbers and snails with their shells disintegrating in vents in the Mediterranean sea. They say impacts such as changing of marine food web and decrease in biodiversity might become common with the increase of …
Much of the scientific and public focus on anthropogenic carbon dioxide emissions have been on climate impacts. Emission targets have been suggested based primarily on arguments for preventing climate from shifting significantly from its preindustrial state. However, recent studies underline a second major impact of carbon emissions: ocean acidification. Over …
Here the authors show the effects of acidification on benthic ecosystems at shallow coastal sites where volcanic CO2 vents lower the pH of the water column. Along gradients of normal pH (8.1
Rising levels of atmospheric carbon dioxide lead to acidification of the oceans. A site in the Mediterranean, naturally carbonated by under-sea volcanoes, provides clues to the possible effects on marine ecosystems.
The present study has been carried out to determine the effect of temperature on behaviour, oxygen consumption, ammonia excretion and tolerance limit of the fish fingerlings of Alepes djidaba, which were collected at Kalpakkam. The fish fingerlings were placed at different temperatures, based on the thermal tolerance limit of fish …
In 2005, months of unprecedented higher-than-normal water temperatures started a cascade of bleaching, disease, and death among corals in the Eastern Caribbean. Such events are increasing in frequency around the world and threaten these fragile ecosystems, which shelter a wealth of biodiversity and provide sources of food and pharmaceuticals. Researchers …
