Corals

Coral reefs: strategies for ecosystems on the edge

Coral reefs have exceptional levels of biodiversity and provide important social and ecological services, including food, coastal protection, recreation, tourism, and cultural connections. However, local stressors and climate change are causing a sharp decline in coral reefs and the more than 230 international agreements with coral reef provisions have failed …

World's coral reefs doomed even if COP21 is 'wildly successful' expert says

Coral reefs are doomed even if COP21 talks are a success(Ove Hoegh-Guldberg, Global Change Institute at the University of Queensland) Coral reefs, as they were 50 years ago, will not be found anywhere on Earth by the middle of the century, an expert has warned. Professor Peter F Sale, from …

Coral Reefs and Climate Change: Maybe Reefs Could Keep Pace with Sea Rise?

If carbon levels are limited and we manage coral reefs well, they could grow vertically and maintain pace with rising sea levels. At least, researchers from Florida Institute of Technology say that could very likely happen, and they recently reported their findings in the journal Royal Society Open Science. The …

Shipping company Matson to pay Hawaii $15 million over molasses spill

A U.S. shipping company has agreed to pay Hawaii more than $15 million to reimburse the state for the cost of cleanup and restoration following a massive molasses spill in Honolulu Harbor two years ago, officials said on Wednesday. About 1,400 tons of brown, sticky liquid leaked into the harbor …

Keep up or drown: adjustment of western Pacific coral reefs to sea-level rise in the 21st century

Since the Mid-Holocene, some 5000 years ago, coral reefs in the Pacific Ocean have been vertically constrained by sea level. Contemporary sea-level rise is releasing these constraints, providing accommodation space for vertical reef expansion. Here, the researchers show that Porites microatolls, from reef-flat environments in Palau (western Pacific Ocean), are …

Molecular processes of transgenerational acclimation to a warming ocean

Some animals have the remarkable capacity to acclimate across generations to projected future climate change however, the underlying molecular processes are unknown. We sequenced and assembled de novo transcriptomes of adult tropical reef fish exposed developmentally or transgenerationally to projected future ocean temperatures and correlated the resulting expression profiles with …

15,000 sq km of coral reef could be lost in current mass bleaching, say scientists

A massive coral bleaching event currently ravaging coral reefs across the globe could destroy thousands of square kilometres of coral cover forever, US government scientists have said. In figures exclusively released to the Guardian, scientists from the US National Oceanic and Atmospheric Administration (Noaa) said about 12% of the world’s …

The influence of coral reefs and climate change on wave-driven flooding of tropical coastlines

A numerical model, XBeach, calibrated and validated on field data collected at Roi-Namur Island on Kwajalein Atoll in the Republic of Marshall Islands, was used to examine the effects of different coral reef characteristics on potential coastal hazards caused by wave-driven flooding and how these effects may be altered by …

Scientists say warming seas could kill off coral reefs in Pacific, Atlantic oceans

Coral reefs are essential to ocean health, but dangerous coral bleaching is occurring more often and more widely due to warmer water, scientists report Abnormally warm ocean temperatures are creating conditions that threaten to kill coral in the equatorial Pacific, north Pacific and western Atlantic oceans, the National Oceanic and …

Great Barrier Reef: Australia says Unesco decision shows it is a 'world leader'

Greg Hunt, the federal environment minister, has said a UN decision not to list the Great Barrier Reef as in danger shows that Australia is a “role model to the world” in environmental protection. On Wednesday, the 21 nations on Unesco’s world heritage committee unanimously endorsed an earlier draft ruling …

Australia keeps fingers crossed UNESCO won't blacklist Great Barrier Reef

With the Australian sun illuminating the crystal clear waters of the Great Barrier Reef in all their glory, UNESCO World Heritage delegates snorkeled for hours surrounded by manta rays, dolphins and reef sharks. Their mission was to check the health of the world's largest living ecosystem, thousands of multi-colored coral …

Changes in adaptive capacity of Kenyan fishing communities

Coastal communities are particularly at risk from the impacts of a changing climate. Building the capacity of coastal communities to cope with and recover from a changing environment is a critical means to reducing their vulnerability. Yet, few studies have quantitatively examined adaptive capacity in such communities. Here, we build …

Great Barrier Reef government panel to include climate change experts

Australia’s environment minister Greg Hunt names scientists tasked to advise the government on Great Barrier Reef health priorities Scientists with expertise in climate change and marine science are among a panel of 16 experts announced to advise the federal government on priorities and actions relating to the Great Barrier Reef. …

Regional State of the Coast Report: Western Indian Ocean

The Regional State of Coast Report for the western Indian Ocean (WIO) is the first comprehensive regional synthesis to provide insights into the enormous economic potential around the WIO, the consequential demand for marine ecosystem goods and services to match the increasing human population, the pace and scale of environmental …

Diseased fish confirm damage to Great Barrier Reef ecosystem, say scientists

The kind of muddy waters often seen around the Great Barrier Reef increase disease rates in fish and damage their gills, according to reef scientists. A new study by James Cook University researchers simulated the levels of suspended sediment “frequently found” in the reef due to floods, coastal agriculture and …

Great Barrier Reef meets criteria for 'in danger' listing by Unesco, say lawyers

An analysis by environmental advocates claims the degradation of the reef meets five out eight possible reasons for listing by the world heritage committee Degradation of the Great Barrier Reef overwhelmingly meets the criteria for an “in danger” listing by Unesco, according to a joint report by environmental lawyers from …

Coral Reefs in Palau Defy Ocean Acidification

Coral reefs have been the subject of much research given the ongoing threats they are dealing with related to climate change. Ocean acidification, for one, is wreaking havoc on these delicate ecosystems, but a remarkable new study says that coral reefs in Palau may be able to defy the odds. …

Changes in coral reef communities across a natural gradient in seawater pH

Ocean acidification threatens the survival of coral reef ecosystems worldwide. The negative effects of ocean acidification observed in many laboratory experiments have been seen in studies of naturally low-pH reefs, with little evidence to date for adaptation. Recently, we reported initial data suggesting that low-pH coral communities of the Palau …

Trouble looms as warmer oceans push marine life toward the poles

Rising sea temperatures attributed to global climate change could drive many marine creatures away from the equator, but their move toward the poles promises to put them in peril in habitats that are smaller and less hospitable, scientists say. Two studies published on Thursday in the journal Science illustrate dangers …

Great Barrier Reef coral four times safer in no-take fishing reserves, study shows

Research into the Great Barrier Reef has discovered coral disease levels are four times lower inside no-take marine reserves – where fishing is banned – than outside reserves. Scientists from James Cook University surveyed more than 80,000 corals around the Whitsunday Islands for six different diseases that commonly harm reefs …

Mangrove campaigners battle to save the 'roots of the sea'

Alfredo Quatro says we must defend mangrove forests – which protect our shorelines and diverse marine life – against man-made development Mangroves are a cornucopia of life – a rainforest by the sea – surviving in inter-tidal zones of tropical and sub-tropical regions. Over the last 23 years, I have …

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