Coral Reefs and climate change news from mongabay.com

Featured video: Google Earth highlights imperiled coral reefs around the world

2012-04-18T16:12:00Z

A new video by Google Earth and the World Resources Institute (WRI) highlights the world's many endangered coral reefs. A part of the WRI's Reefs at Risk program, the video highlights regional and global threats to the oceans' most biodiverse ecosystem. According to the WRI, a stunning 75 percent of the world's reefs are currently threatened.

Researchers challenge idea that marine reserves promote coral recovery

2011-11-09T11:16:00Z

Fleshy whorls of thick brown algae blanket the once-vibrant corals in Glover’s Reef, Belize. According to a controversial study published August 14 in the journal Coral Reefs, a decade of marine reserve protection has failed to help these damaged Caribbean corals recover.

Unanimous agreement among scientists: Earth to suffer major loss in species

2011-11-09T00:23:00Z

The thylacine, the dodo, the great auk, the passenger pigeon, the golden toad: these species have become symbols of extinction. But they are only the tip of the recent extinction crisis, and according to a survey of 583 conservation scientists, they are only the beginning. In a new survey in Conservation Biology, 99.5 percent of conservation scientists said a serious loss in biodiversity was either 'likely', 'very likely', or 'virtually certain'. The prediction of a significant loss of species is not surprising—scientists have been warning for decades that if global society continues with business as usual the world will suffer from mass extinction—what is perhaps surprising is the practically unanimous expectation that a global biodiversity decline will occur.

Coral reef biodiversity may be vastly underestimated

2011-11-03T21:00:00Z

Researchers with the Smithsonian have catalogued almost as many crab species on tropical coral reef bits measuring just 20.6 square feet (6.3 square meters) as in all of Europe's seas, finds a new paper in PLoS ONE. The team used DNA barcoding to quickly identify a total of 525 crustaceans (including 168 crab species) from dead coral chunks taken from seven sites in the tropics, including the Indian, Pacific and Caribbean oceans.

Ocean prognosis: mass extinction

2011-06-20T16:26:00Z

Multiple and converging human impacts on the world's oceans are putting marine species at risk of a mass extinction not seen for millions of years, according to a panel of oceanic experts. The bleak assessment finds that the world's oceans are in a significantly worse state than has been widely recognized, although past reports of this nature have hardly been uplifting. The panel, organized by the International Program on the State of the Ocean (IPSO), found that overfishing, pollution, and climate change are synergistically pummeling oceanic ecosystems in ways not seen during human history. Still, the scientists believe that there is time to turn things around if society recognizes the need to change.

Coral crisis: 75% of the world's coral reefs in danger

2011-02-23T20:01:00Z

Marine scientists have been warning for years that coral reefs, the most biodiverse ecosystems in the ocean, are facing grave peril. But a new comprehensive analysis by the World Resources Institute (WRI) along with twenty-five partners ups the ante, finding that 75% of the world's coral reefs are threatened by local and global impacts, including climate change. An updating of a 1996 report, the new analysis found that threats had increased on 30% of the world's reefs. Clearly conservation efforts during the past decade have failed to save reefs on a large-scale.

Beyond gloom: solutions to the global coral reef decline

2010-11-10T21:45:00Z

The world's coral reefs are in trouble. Due to a variety of factors—including ocean acidification, warming temperatures from climate change, overfishing, and pollution—coral cover has decline by approximately 125,000 square kilometers in the past 50 or so years. This has caused some marine biologists, like Charlie Veron, Former Chief Scientist of the Australian Institute of Marine Science, to predict that coral reefs will be largely extinguished within a century. This year alone, large-scale coral bleaching events, whereby coral lose their symbiotic protozoa and become prone to disease and mortality, were seen off the coasts of Indonesia, the Philippines, and some Caribbean islands. However a new paper in Trends in Ecology and Evolution attempts to dispel the gloom over coral reefs by pointing to strategies, and even some successes, to save them.

Carbon emissions hurting coral recruitment

2010-11-08T20:31:00Z

While research has shown that ocean acidification from rising CO2 levels in the ocean imperils the growth and survival mature coral reefs, a new study has found that it may also negatively impact burgeoning corals, by significantly lowering the success of coral recruitment. A study in the Proceedings of the National Academy of Sciences (PNAS) has found that coral recruitment could fall by 73% over the next century due to increasing acidification.

Majority of Americans confused on climate change basics

2010-10-17T19:11:00Z

Most Americans don't understand the basics of climate change, according to a new poll by researchers with Yale. The poll found that over half of Americans deserve an 'F' on basic understanding of climate science and climate change, while only 1% would receive an 'A'.

Losing nature's medicine cabinet

2010-10-04T21:38:00Z

In all the discussions of saving the world's biodiversity from extinction, one point is often and surprisingly forgotten: the importance of the world's species in providing humankind with a multitude of life-saving medicines so far, as well as the certainty that more vital medications are out there if only we save the unheralded animals and plants that contain cures unknown. Already, species have provided humankind everything from quinine to aspirin, from morphine to numerous cancer and HIV-fighting drugs. "As the ethnobotanist Dr. Mark Plotkin commented, the history of medicine can be written in terms of its reliance on and utilization of natural products," physician Christopher Herndon told mongabay.com. Herndon is co-author of a recent paper in the journal Biotropica, which calls for policy-makers and the public to recognize how biodiversity underpins not only ecosystems, but medicine.

Colossal coral bleaching kills up to 95 percent of corals in the Philippines

2010-09-23T15:15:00Z

It is one of the most worrisome observations: fast massive death of coral reefs. A severe wide-scale bleaching occurred in the Philippines leaving 95 percent of the corals dead. The bleaching happened as the result of the 2009-2010 El Niño, with the Indian Ocean and Southeast Asia waters experiencing significant thermal increase especially since the beginning of 2010.

Massive coral bleaching in Indonesia

2010-08-16T21:56:00Z

A large-scale bleaching event due to high ocean temperatures appears to be underway off the coast of Sumatra, an Indonesian island, reports the Wildlife Conservation Society (WCS).

The biology and conservation of declining coral reefs, an interview with Kristian Teleki

2010-08-15T19:06:00Z

Coral reefs are often considered the "rainforests of the sea" because of their amazing biodiversity. In fact, coral reefs are one of the most diverse ecosystems on earth. It is not unusual for a reef to have several hundred species of snails, sixty species of corals, and several hundred species of fish. While they comprise under 1% of the world’s ocean surface, one-quarter of all marine species call coral reefs their home. Fish, mollusks, sea stars, sea urchins, and more depend on this important ecosystem, and humans do too. Coral reefs supply important goods and services–from shoreline protection to tourism and fisheries–which by some estimates are worth $375 billion a year.

Amazing reefs: how corals 'hear', an interview with Steve Simpson

2010-07-21T16:26:00Z

Corals aggregate to form vast reefs, which are home to numerous species and provide vital ecological services such as protecting shorelines. However, coral reefs are one of the most threatened ecosystems in the world due to many factors, such as global warming and ocean acidification. Recent research by Simpson and his team of scientists has shown that corals, rather than drifting aimlessly after being released by their parent colonies and by chance landing back on reefs, instead find their way purposefully to reefs by detecting the sound of snapping shrimps and grunting fish on the reef. However, that discovery also means that the larvae might struggle to find reefs when human noises, like drilling or boats, mask the natural ocean sounds.

World failing on every environmental issue: an op-ed for Earth Day

2010-04-22T02:59:00Z

The biodiversity crisis, the climate crisis, the deforestation crisis: we are living in an age when environmental issues have moved from regional problems to global ones. A generation or two before ours and one might speak of saving the beauty of Northern California; conserving a single species—say the white rhino—from extinction; or preserving an ecological region like the Amazon. That was a different age. Today we speak of preserving world biodiversity, of saving the 'lungs of the planet', of mitigating global climate change. No longer are humans over-reaching in just one region, but we are overreaching the whole planet, stretching ecological systems to a breaking point. While we are aware of the issues that threaten the well-being of life on this planet, including our own, how are we progressing on solutions?

Healthy coral reefs produce clouds and precipitation

2010-03-03T19:26:00Z

Twenty years of research has led Dr. Graham Jones of Australia's Southern Cross University to discover a startling connection between coral reefs and coastal precipitation. According to Jones, a substance produced by thriving coral reefs seed clouds leading to precipitation in a long-standing natural process that is coming under threat due to climate change.

If protected coral reefs can recover from global warming damage

2010-01-10T17:14:00Z

A study in the Caribbean has found that coral reefs can recover from global warming impacts, such as coral bleaching, if protected from fishing. Marine biologists have long been worried that coral reefs affected by climate change may be beyond recovery, however the new study published in PLoS ONE shows that alleviating another threat, overfishing, may allow coral reefs to cope with climate change.

Climate change causing irreversible acidification in world's oceans

2009-12-15T00:51:00Z

A new study from the Secretariat of the Convention on Biological Diversity has synthesized over 300 reports on ocean acidification caused by climate change. The report finds that increasing acidification will lead to irreversible damage in the world's oceans, creating a less biodiverse marine environment. Released today the report determines that the threat to marine life by ocean acidification must be considered by policymakers at the UN Climate Change Conference in Copenhagen.

Photos: ten beloved species threatened by global warming

2009-12-14T20:06:00Z

The International Union for the Conservation of Nature (IUCN) has released a list of ten species that are likely to be among the hardest hit by climate change, including beloved species such as the leatherback sea turtle, the koala, the emperor penguin, the clownfish, and the beluga whale. The timing of the list coincides with the negotiations by world leaders at the UN Climate Change Conference to come up with an international agreement to combat climate change.

Extinctions on the rise in the Galapagos: fishing and global warming devastating islands' species

2009-12-03T23:59:00Z

We may never see again the Galapagos black-spotted damselfish, the beautiful 24-rayed sunstar, or the Galapagos stringweed. These species from Galapagos waters may all very well be extinct. Other species are on the brink, such as the Galapagos penguin and the Floreana cup coral. A new report in Global Change Biology reveals that in just a matter of decades, overfishing and climate change has devastated the Galapagos' unique and famous ecosystems.

Not just the polar bear: ten American species that are feeling the heat from global warming

2009-12-01T22:46:00Z

A new report, America’s Hottest Species, highlights a variety of American wildlife that are currently threatened by climate change from a small bird to a coral reef to the world’s largest marine turtle.

Zoos call for deeper emission cuts to save life on Earth

2009-11-30T01:45:00Z

To save species around the world zoos say deeper emission cuts are needed than governments are currently proposing. Over 200 zoos worldwide have signed a petition calling on governments to set the target of atmospheric carbon below 350 parts per million (ppm) far lower than most government targets.

Investing in conservation could save global economy trillions of dollars annually

2009-09-03T17:50:00Z

By investing billions in conserving natural areas now, governments could save trillions every year in ecosystem services, such as natural carbon sinks to fight climate change, according to a European report The Economics of Ecosystems and Biodiversity (TEEB).

Loss of Great Barrier Reef due to global warming would cost Australia $37.7 billion

2009-08-12T00:02:00Z

A recent study reports that the loss of Australia’s Great Barrier Reef due to climate change poses a catastrophe not just for marine life, but would cost $37.7 billion during the next century.

New report predicts dire consequences for every U.S. region from global warming

2009-06-17T17:50:00Z

Government officials and scientists released a 196 page report detailing the impact of global warming on the U.S. yesterday. The study, commissioned in 2007 during the Bush Administration, found that every region of the U.S. faces large-scale consequences due to climate change, including higher temperatures, increased droughts, heavier rainfall, more severe weather, water shortages, rising sea levels, ecosystem stresses, loss of biodiversity, and economic impacts.

Coral reef loss in Caribbean leads to ongoing fish declines

2009-04-30T16:46:00Z

Analyzing 48 surveys of Caribbean fish populations over fifty years, from 1955-2007, a new meta-study has found that fish populations in the famously clear waters began to drop in the mid-90s, leading to a consistent decline that hasn’t stopped. The study published in Current Biology discovered a region-wide decline of about 3-6 percent per year in three out of six trophic groups of fish, i.e. groupings of species categorized by their place on the food chain. The declines didn’t show major differences between species targeted by fishermen and those that are not, implying that overfishing isn’t the only cause of the decline in the Caribbean.

Seven new species of deep sea coral discovered

2009-03-09T18:14:00Z

In the depths of the Papahānaumokuākea Marine National Monument, which surrounds ten Hawaiian islands, scientists discovered seven new species of bamboo coral. Supported by the National Ocean and Atmospheric Administration (NOAA), the discoveries are even more surprising in that six of the seven species may represent entirely new genus of coral.

Indonesian coral reef recovering after devastating tsunami and years of destructive fishing

2009-01-05T15:34:00Z

On December 26th, 2004 an earthquake recorded at a magnitude of 9.3 in the Indian Ocean created a massive tsunami that struck nations across the region. Enormous waves took the lives of nearly 250,000 people while destroying cities and towns in minutes. The tsunami also caused extensive environmental damage, including reef systems along many coastal areas. Four years after the tsunami researchers from the Wildlife Conservation Society (WCS) have returned to site of the disaster to survey the damaged reefs and work with local communities on preserving this important resource. After exploring sixty sites of coral reef off the coasts of Aceh, Indonesia, the scientists report that reefs damaged by the 2004 tsunami are on the path to recovery.

Ocean acidification is killing the Great Barrier Reef

2009-01-01T22:13:00Z

Since 1990 the growth of coral in Australia's Great Barrier Reef has slowed its lowest rate in at least 400 years as a result of warming waters and ocean acidification, report researchers writing in Science. The finding portends a bleak near-term future for the giant reef ecosystem as well as calcifying marine organisms around the world.

U.S. pledges $40M toward coral reef conservation.

2008-10-22T14:30:39Z

The U.S. government has pledged almost $40 million to protect biologically-rich coral reefs in Southeast Asia, according to the U.S. embassy in the Philippines.

52% of amphibians, 35% of birds at risk from climate change

2008-10-08T14:30:39Z

52 percent of the amphibians, 35 percent of birds and 71 percent of reef-building coral are "particularly susceptible" to climate change, warns an IUCN report.

'Safe' CO2 level may destroy the fishing industry, wreck reefs

2008-09-23T14:30:39Z

An atmospheric carbon dioxide concentration of 450 parts-per-million (ppm) — a target level deemed safe by the United Nations Framework Convention on Climate Change (UNFCCC) — would be devastating to marine ecosystems warn scientists writing in the journal Geophysical Research Letters.

Saving oceans from acidification requires addressing climate policy

2008-08-27T14:30:39Z

Ocean acidification driven by rising carbon dioxide emissions is a great threat to marine ecosystems and needs be addressed through climate policy and conservation measures, said top marine scientists meeting in Hawaii.

The long-ignored ocean emergency and what can be done to address it

2008-08-18T14:30:39Z

This year has been full of bad news regarding marine ecosystems: one-third of coral species threatened with extinction, dead-zones spread to 415 sites, half of U.S. reefs in fair or bad condition, increase in ocean acidification, tuna and shark populations collapsing, and only four percent of ocean considered pristine. Jeremy Jackson, director of the Scripps Center for Marine Biodiversity and Conservation at the University of California, San Diego, synthesizes such reports and others into a new paper, published in the journal Proceedings of the Naional Academy of Sciences, that boldly lays out the scope of the oceanic emergency and what urgently needs to be done.

Climate change will increase the erosion of coral reefs

2008-07-28T14:30:39Z

Coral reefs are particularly susceptible to climate change. Warming waters have been shown to bleach coral, killing off symbiotic algae that provide them with sustenance, and often leading to the death of the coral itself. Much attention has been placed on bleaching coral, but now scientists have discovered an additional danger to coral reefs in a warming world: erosion.

Coral susceptibility to bleaching due to small differences in symbiotic relationship

2008-07-22T14:30:39Z

Coral reefs are now considered the second most threatened group of animals in the world, with nearly one-third of corals listed as endangered (amphibians retain the dubious honor of being number one). Although corals face many threats, the greatest is bleaching caused by warming oceans due to climate change. However, some coral populations are more susceptible to bleaching than others, even including corals of the same species. New research has uncovered that the reason lies in small differences in the symbiotic relationship between corals and their symbionts, small marine animals and protozoa. Such differences, however miniscule, have a huge impact on the likelihood of a coral's ability to survive warming oceans.

Moving species may be only way to save them from climate change

2008-07-17T14:30:39Z

Desperate times call for desperate measures, according to a new paper in Science. conservation scientists from the US, the UK, and Australia are calling for the consideration of a highly controversial conservation technique: assisted migration. According to the policy piece, species would be relocated to sites "where they do not currently occur or have not been known to occur in recent history".

1/3 of corals face extinction

2008-07-10T14:30:39Z

Nearly one-third of reef-building corals are vulnerable to extinction, according to an assessment of 845 species of coral. Rising temperatures, increased incidence of disease, and human disturbance are driving the trend.

Good news for reefs: giant coral structure found off Brazil

2008-07-07T14:30:39Z

Amid a series of dire reports on the status of coral reefs, scientists announced the discovery of a reef off the southern coast of Brazil's Bahia state that doubles the size of the Southern Atlantic Ocean's largest and richest reef system, the Abrolhos Bank.

U.S. coral reefs in trouble

2008-07-07T14:30:39Z

Nearly half of U.S. coral reefs are in "poor" or "fair" condition according to a new study by the National Oceanic and Atmospheric Administration (NOAA).

CO2 emissions could doom fishing industry

2008-07-03T14:30:39Z

Aside from warming climate, rising carbon dioxide emissions are contributing to ocean acidification, threatening sea live, warn researchers writing in the journal Science. This trend makes it all the more important to reduce emissions, argue the authors.

Microbes could be the key to coral death

2008-04-02T14:30:39Z

Coral reefs could be dying out because of changes to the microbes that live in them just as much as from the direct rise in temperature caused by global warming, according to scientists speaking today at the Society for General Microbiology's 162nd meeting being held this week at the Edinburgh International Conference Centre.

Fast-growing coral may help reefs survive global warming

2008-03-13T14:30:39Z

Two fast-growing coral species may hold the key to Caribbean reefs surviving global warming, report researchers writing in the journal Science.

Expedition finds inverted pyramid where sharks dominate marine ecology

2008-02-25T14:30:39Z

A survey of a remote Pacific archipelago turned up pristine coral reefs that could offer a "baseline" for measuring the human impact on reefs worldwide, report researchers from the Scripps Institution of Oceanography (SIO) at the University of California at San Diego.

Widespread butterflyfish may go extinct due to global warming, pollution

2008-02-24T14:30:39Z

The Chevroned Butterflyfish, a colorful fish found in tropical oceans around the world, faces extinction due to overexploitation, pollution and climate change, report researchers writing in the journal Behavioural Ecology and Sociobiology. Despite its widespread distribution, the species could be doomed by its specialized feeding habitats: the Chevroned Butterflyfish (Chaetodon trifascialis) feeds on only one type of coral.

Why are oceans at risk from global warming?

2008-02-17T14:30:39Z

Climate change is putting the world's oceans at risk by increasing the temperature and acidity of seawater, and altering atmospheric and oceanic circulation, warned a panel of scientists this week at the American Association for the Advancement of Science (AAAS) annual meeting in Boston.

Natural ocean thermostat may protect some coral reefs

2008-02-07T14:30:39Z

Natural processes may prevent oceans from warming beyond a certain point, helping protect some coral reefs from the impacts of climate change, new research finds. The study provides evidence that an ocean "thermostat" may be helping regulate sea-surface temperatures in a biologically diverse region of the western Pacific.

Groups call for doubling of reef protection for International Year of the Reef

2008-01-25T14:30:39Z

Thursday 17 countries and 30 organization launched the International Year of the Reef, a campaign to protect coral reefs increasingly threatened by climate change, pollution, and unsustainable activities.

Global warming will degrade 98% of coral reefs by 2050

2007-12-13T14:30:39Z

Ocean acidification caused by human-induced carbon dioxide emissions could dramatically alter the planet's coral reefs and marine food chains, warns research published in the December 14 issue of Science and presented at the fall meeting of the American Geophysical Union (AGU) in San Francisco.

Coral reefs with seasonal temperatures may survive climate change

2007-11-29T14:30:39Z

Scientists have revealed an important discovery that raises doubts concerning the viability of plans to fertilize the ocean to solve global warming, a projected $100 billion venture.