News articles on impact of climate change
Mongabay.com news articles on impact of climate change in blog format. Updated regularly.
Spring arrives 2 weeks earlier in Arctic due to climate change
(06/19/2007) Arctic summers are arriving two weeks earlier than just a decade ago reports a study published the June 19th issue of Current Biology. The research, based on phenology--the study of the timing of familiar signs of spring seen in plants, insects, birds, and other species--found that the arrival of spring is advancing at 14.5 days per decade.
France to see scorching summers due to global warming
(06/14/2007) Mediterranean countries will face a 200-500 percent rise in the number of dangerously hot days due to global warming, reports a study published in the June 15 Geophysical Research Letters.
Ocean acidification monitoring system launched
(06/13/2007) The first buoy to monitor ocean acidification has been launched in the Gulf of Alaska reports the National Science Foundation (NSF). Scientists hope the instrument, which will transmit data via satellite, will help examine how ocean circulation and ecosystems interact to determine how much carbon dioxide the north Pacific Ocean absorbs each year.
Can cattle ranchers and soy farmers save the Amazon?
(06/06/2007) John Cain Carter, a Texas rancher who moved to the heart of the Amazon 11 years ago and founded what is perhaps the most innovative organization working in the Amazon, Alianca da Terra, believes the only way to save the Amazon is through the market. Carter says that by giving producers incentives to reduce their impact on the forest, the market can succeed where conservation efforts have failed. What is most remarkable about Alianca's system is that it has the potential to be applied to any commodity anywhere in the world. That means palm oil in Borneo could be certified just as easily as sugar cane in Brazil or sheep in New Zealand. By addressing the supply chain, tracing agricultural products back to the specific fields where they were produced, the system offers perhaps the best market-based solution to combating deforestation. Combining these approaches with large-scale land conservation and scientific research offers what may be the best hope for saving the Amazon.
Glaciers speed up due to global warming
(06/05/2007) Antarctic glaciers are moving faster due to global warming, reports the British Antarctic Survey.
Indonesia: No more rainforest clearing for palm oil
(06/05/2007) Indonesian Minister for Environment Rachmat Witoelar said Indonesia will not allow palm oil producers to clear primary forests for establishing plantations, reports Bloomberg. Indonesia is expected to surpass Malaysia as the world largest producer of palm oil this year. The government hopes to add 7 million hectares of plantations by 2011.
Pictures of newly discovered species in Suriname
(06/04/2007) Scientists documented 467 species, including 24 species believed new to science, during a rainforest survey in eastern Suriname, South America. The expedition, led by conservation International (CI), was sponsored by two mining companies, BHP-Billiton Maatschappij Suriname (BMS) and Suriname Aluminium Company LLC (Suralco), hoping to mine the area for bauxite, the raw material used to make aluminum. conservation International said the Rapid Assessment Survey (RAP) will help "give miners guidance on protecting unique plants and animals during potential future development," according to a statement from the organization.
10-20% of birds extinct by 2100 due to global warming, deforestation
(06/04/2007) Ten to twenty percent of the world's terrestrial bird species could be threatened with extinction by 2100 due to climate change and habitat destruction reports a study published in the June 5 issue of the journal PLoS Biology. The numbers are in line with estimates published last year in The Proceedings of the National Academy of Sciences. Combining future projections on global warming, agricultural expansion and human population growth from the global Millennium Ecosystem Assessment with current geographic ranges of the world's 8,750 species of terrestrial birds, researchers Walter Jetz, David Wilcove, and Andrew Dobson estimate that 950 to 1800 species may be condemned to extinction by 2100.
Globalization could save the Amazon rainforest
(06/03/2007) The Amazon basin is home to the world's largest rainforest, an ecosystem that supports perhaps 30 percent of the world's terrestrial species, stores vast amounts of carbon, and exerts considerable influence on global weather patterns and climate. Few would dispute that it is one of the planet's most important landscapes. Despite its scale, the Amazon is also one of the fastest changing ecosystems, largely as a result of human activities, including deforestation, forest fires, and, increasingly, climate change. Few people understand these impacts better than Dr. Daniel Nepstad, one of the world's foremost experts on the Amazon rainforest. Now head of the Woods Hole Research Center's Amazon program in Belem, Brazil, Nepstad has spent more than 23 years in the Amazon, studying subjects ranging from forest fires and forest management policy to sustainable development. Nepstad says the Amazon is presently at a point unlike any he's ever seen, one where there are unparalleled risks and opportunities. While he's hopeful about some of the trends, he knows the Amazon faces difficult and immediate challenges.
Global warming will worsen fires in Australia
(05/31/2007) Global warming will put Australia at significantly higher risk of catastrophic bushfires said a leading climate scientists. Speaking at a climate conference in Sydney, Andy Pitman, co-director of the University of New South Wales's climate change research center, said that Australia will face a 100 to 200 percent increase in bushfire vulnerability by 2100 if greenhouse gas emissions aren't curbed.
Monsoon pattern linked to climate change
(05/31/2007) Researchers have constructed a 155,000 record of monsoon history. The findings could help climatologists better understand the impact of climate change on monsoon patterns, which play a critical role in agriculture for hundreds of millions of people.
Greenpeace pressures China on global warming
(05/30/2007) Greenpeace stepped up the pressure on China to do something about its surging greenhouse gas emissions, launching a campaign that warns melting glaciers could hurt Chinese agriculture and hydroelectric projects. The environmental group cited a Chinese Academy of Sciences' projection that 80 percent of the glaciers in Tibet and the surrounding region could melt by 2035, though other research suggests more moderate melting.
Global warming may be key factor in frog deaths
(05/30/2007) Three papers published in this week's issue of the journal Nature debate the proximate causes for the global decline of amphibians, but nonetheless reveal mounting concerns among scientists over the continuing disappearance of frogs, salamanders, and their relatives.
Does drought cause war?
(05/30/2007) A new study links drought to the outbreak of war, reports New Scientist Magazine.
Global warming may worsen infectious disease
(05/22/2007) Outbreaks of infectious disease will likely worsen due to global warming, warn scientists at the 107th General Meeting of the American Society for Microbiology in Toronto.
Coral diseases largely result from human activities
(05/17/2007) The apparent increase in infectious disease among coral is likely the result of environmental change and, as such, researchers should focus on understanding the relationship between coral diseases and environmental changes, rather than the diseases themselves, argues a paper published in the August 2007 issue of the Journal of Experimental Marine Biology and Ecology.
Southern Ocean may not absorb more CO2 emissions
(05/17/2007) Climate change has weakened one the Earth's largest natural carbon 'sinks' raising the possibility that increased warming could reduce the capacity of some systems to absorb carbon dioxide, reports a study published this week in the journal Science.
NASA: U.S. may face extreme summer temperatures
(05/09/2007) A new NASA study warns that the eastern United States could experience extreme warming by 2080, with average summer temperatures rising 10 degrees Fahrenheit.
Global warming will hurt migratory birds
(05/07/2007) 84 percent of migratory birds have the potential to be affected by climate change warned the United Nations Monday. Lowered water tables, changes in food supplies and prey range, rising sea levels, and increased storm frequency are the greatest threats to birds, said officials with the African Eurasian Migratory Waterbirds Agreement (AEWA) and the Convention on Migratory Species (CMS), two United Nations Environment Programme (UNEP)-led Treaties for the conservation of wildlife.
Global warming is killing coral reefs
(05/07/2007) A new study provides further evidence that climate change is adversely affecting coral reefs. While previous studies have linked higher ocean temperatures to coral bleaching events, the new research, published in PLoS Biology, found that climate change may increasing the incidence of disease in Great Barrier Reef corals. Omniously, the research also shows that healthy reefs, with the highest density of corals, are hit the hardest by disease.
Cost of stabilizing climate 0.1% per year
(05/04/2007) The Intergovernmental Panel on Climate Change (IPCC) released its long awaiting installment on climate change mitigation, arguing that the costs of offsetting global warming will be much lower than some claim. The IPCC estimates that emissions can be reduced rapidly using existing technology at a cost of 3 percent of GDP, or 0.12 percent per year over the next 25 years, though new technologies could further reduce this cost. While the projections are encouraging, they may be conservative. Some analysts, including the well-respected Amory Lovins of the Rocky Mountain Institute, have calculated that emissions targets that would stabilize the climate could be achieved at no net cost and possibly even a profit. Even McKinsey & Company, a leading management consulting firm, agrees, putting the net cost of reducing emissions by 46 percent at zero.
Climate change could dramatically change forests in Central America
(05/02/2007) Drought could cause dramatic shifts in rainforest plant communities in Central America, reports a new study published in the May 3 issue of Nature. The research shows that many rainforest plants are ill-equipped to deal with extended dry periods, putting them at elevated risk from changes in climate projected for the region.
Climate change may decimate Indonesia's food supplies, worsen fires
(04/30/2007) Climate change could worsen food shortages in Indonesia by delaying the onset of monsoon rains reports a new study published in Proceedings of the National Academy of Sciences (PNAS). The findings suggest that the country could face increasing risk of drought and forest fire if nothing is done to control rising greenhouse gas emissions.
Arctic sea ice melting faster than previously thought
(04/30/2007) Arctic sea ice is melting far faster than previously believed reports a new study published in the May 1 issue of Geophysical Research Letters. A comparison of newly available observational data to advanced simulations reveals that Arctic sea ice has been disappearing about three times faster
than the average rate of loss projected by computer models. The new research, conducted by Julienne Stroeve of the National Snow and Ice Data Center
(NSIDC) and his colleagues, shows that September sea ice extent retreated at a rate of about 7.8 percent per decade during the 1953-2006 period, not the 2.5 percent projected by simulations. The basis for the new data--a combination of satellite measurements and early aircraft and ship reports--is considered more reliable than the earlier records.
Deep sea fish growing slower due to global warming
(04/23/2007) Changes in ocean temperature have altered the growth rates of commercially harvested fish over the past century, according to a new study published in this week's early online edition of the Proceedings of the National Academy of Sciences (PNAS).
Global warming reduced crop yields over past 20 years
(03/16/2007) Global warming has already caused crop losses according to a new study by researchers at the Lawrence Livermore National Laboratory and the Carnegie Institution at Stanford University. The study, published March 16 in the online journal Environmental Research Letters, shows that warming temperatures have reduced the combined production of wheat, corn, and barley by 40 million metric tons per year between 1981-2002. The authors, David Lobell of Lawrence Livermore and Christopher Field of the Carnegie Institution, estimate the annual losses at $5 billion.
Global warming could trigger 8-degree temperature rise in Amazon rainforest
(02/28/2007) Tuesday the Brazilian government announced the release of a series of scientific studies, including one by the national space agency (INPE) that projects a 4 to 8 degree-Celcius rise in temperatures in the Amazon Basin by 2100 if nothing is done to combat global climate change.
Antarctic Peninsula warming affects penguins, krill
(02/15/2007) While much of Antarctica has cooled over the past decade, a warming trend in the Antarctic Peninsula may indicate what the future holds for the rest of the icy continent's wildlife. Researchers at Ohio State University say that higher temperatures have already forced penguin populations to migrate south and may have reduced the availability of krill that serve as the based of the Antarctic food chain.
Temperature record for Midwest shows impact of global warming
(01/29/2007) Researchers have developed a new method to create a temperature record for the Great Plains region of the United States. The model, based on analysis of ancient soils, could help predict the impact of global warming on American agricultural production.
California crop production could plunge due to global warming
(12/05/2006) Higher temperatures could cause a 40 percent drop in some of California's most popular crops by mid-century according to new research in the journal Agricultural and Forest Meteorology. Almonds, walnuts, oranges, avocados and table grape could be especially affected.
Fragmentation killing species in the Amazon rainforest
(11/27/2006) Forest fragmentation is rapidly eroding biodiversity in the Amazon rainforest and could worsen global warming according to research to be published this week in the journal Proceedings of the National Academy of Sciences. "Rainforest trees can live for centuries, even millennia, so none of us expected things to change too fast. But in just two decades-a wink of time for a thousand year-old tree-the ecosystem has been seriously degraded." said Dr. William Laurance, a scientist at the Smithsonian Tropical Research Institute in Panama and leader of the international team of scientists that conducted the research.
Climate change could cause sex switch in crocs
(11/27/2006) Warming climate could cause a sex imbalance in crocodiles making it more difficult to find mates, according to a south African scientist. Dr. Alison Leslie, a prefessor at South Africa's University of Stellenbosch, said that crocodile gender is determined by embryo temperature during incubation and that higher temperatures could skew the sex ratio of populations.
Global warming-fueled storms could devastate coral reefs
(11/23/2006) Australia's Great Barrier Reef and other coral ecosystems could suffer from increasingly powerful storms brought about by global warming according to computer models published by a team of Australian scientists in the journal Nature.
Global warming reduces polar bear survival rate
(11/16/2006) Polar bear survival rates have dropped significantly in the past 20 years, probably due to melting sea ice caused by higher temperatures, according to a study released this week.
Global warming could put New York City at hurricane, flood risk
(10/25/2006) NASA researchers are investigating the potential impact of climate change on New York City using computer models to simulate future climates and sea level rise. Their studies, to date, forecast a 15 to 19 inch-increase in sea levels by the 2050s that could put the city at higher risk of flooding during storm surges.
Global warming will threaten health through dirtier air, hotter days, and more natural disasters
(10/23/2006) Global warming will threaten human health through dirtier air, hotter days, and more natural disasters that will worsen water quality, stress emergency systems, and create environmental refugees, warns a public health physician.
Global warming could cause catastrophic die-off of Amazon rainforest by 2080
(10/23/2006) For the Amazon, there is an immense threat looming on the horizon: climate change could well cause most of the Amazon rainforest to disappear by the end of the century. Dr. Philip Fearnside, a Research Professor at the National Institute for Research in the Amazon in Manaus, Brazil and one of the most cited scientists on the subject of climate change, understands the threat well. Having spent more than 30 years in Brazil and now recognized as one of the world's foremost experts on the Amazon rainforest, Fearnside is working to do nothing less than to save this remarkable ecosystem. Fearnside believes saving the Amazon will require a fundamental shift in perception where the Amazon is recognized as an asset beyond the current price of mahogany, soybeans, or cattle, where its value is only unlocked by its destruction. The Amazon is far worth more than this he says. It can play a key role in fighting climate change while providing economic sustenance for millions through sustainable agriculture and rational utilization of its renewable products. It can serve as a storehouse for biodiversity while at the same time ensuring reliable water supplies and moderating regional temperature and precipitation. In short, maintaining the Amazon as a viable ecosystem makes sense economically and ecologically -- it is in our best interest to preserve this resource while we still can.
Climate change to cause more extreme weather
(10/19/2006) Climate change will cause extreme weather to be a more common occurrence according to new computer modeling by researchers from the National Center for Atmospheric Research (NCAR), Texas Tech University, and Australia's Bureau of Meteorology Research Centre.
Warming climate causing Alaska lakes to dry up
(10/12/2006) More than 10,000 Alaskan lakes "shrunk in size or completely dried up" between 1950 and 2002 according to a study published in the Journal of Geophysical Research--Biogeosciences. The study says that during this period, "Alaska has experienced a warming climate with longer growing seasons, increased thawing of permafrost, and greater water loss due to evaporation from open water and transpiration from vegetation; yet there has been no substantial change in precipitation."
Global warming and pollution could doom oysters
(10/11/2006) Oysters exposed to high water temperatures and a common heavy metal are unable to obtain sufficient oxygen and convert it to cellular energy, according to a new study presented at The American Physiological Society conference, Comparative Physiology 2006.
Northeastern U.S. at risk from global warming
(10/05/2006) A new report warns that global warming will "substantially change" the climate in the northeastern if greenhouse gas emissions are reduced.
Climate change causing early spring
(08/25/2006) Spring is arriving earlier across Europe than it did 30 years ago according to new research published in the journal Global Change Biology. Scientists from 17 nations examined 125,000 studies involving 561 species and found that spring is beginning on average six to eight days earlier than it did 30 years ago. The researchers said that in countries where rapid increases in temperature have occurred, that figure is almost doubled.
North Atlantic Ocean freshening could weaken Gulf Stream
(08/24/2006) A new analysis of 50 years of changes in freshwater inputs to the Arctic Ocean and North Atlantic may help shed light on what's behind the recently observed freshening of the North Atlantic Ocean. In a report, published in the August 25, 2006 issue of the journal, Science, MBL (Marine Biological Laboratory) senior scientist Bruce J. Peterson and his colleagues describe a first-of-its-kind effort to create a big-picture view of hydrologic trends in the Arctic. Their analysis reveals that freshwater increases from Arctic Ocean sources appear to be highly linked to a fresher North Atlantic.
Most of world's forests could be gone by 2100
(08/15/2006) New research claims that more than half the world's largest forests will be lost if global temperatures rise by an average of 3 degrees or more by the end of the century.The study, published in the current Proceedings of the National Academy of Sciences, says that a warmer climate also increases the risk of extreme floods, forest fires and droughts.
Report Warns of Coastal Flooding and Rising Sea Levels in California
(08/14/2006) The California Climate Action Team has released a summary report of 17 scientific studies examining the potential impacts of climate change on California. Today, officials discussed the report, the science and what the state is doing to take action on reducing heat-trapping gases that threaten to cause more frequent coastal floods, rising sea levels, beach erosion and disruptions to wetlands. The presentation was held at Scripps Institution of Oceanography at UC San Diego.
Past climate change caused dramatic shift in humidity, precipitation levels, temperature, and ocean water salinity
(08/11/2006) Scientists have uncovered new evidence of dramatic changes in humidity, precipitation levels, temperature, and ocean water salinity during a past episode of global warming. Analyzing plant fossils collected in the Arctic, a team of researchers led by Mark Pagani, professor of geology and geophysics at Yale University, found that water and atmospheric water vapor are a major indicator of the greenhouse changes.
Global Warming Threatens Pollination Timing
(08/09/2006) In addition to the more obvious effects of climate change, such as rising sea levels and increasing storm activity, there is the potential to dramatically alter ecological communities. Dr. David Inouye, director of University of Maryland's graduate program in Sustainable Development and conservation Biology, reports that global warming could disrupt the timing of pollination in alpine environments, with serious negative impacts to both plants and pollinators.
Climate Change Threatens Pacific Ocean Mangroves
(08/07/2006) Action is needed to conserve mangroves in the Pacific amid concern that rising sea levels, linked with climate change, are set to drown large areas of these precious and economically important ecosystems.
Global Warming to Have Significant Impact on California
(07/31/2006) A new report from the state of California warns that climate change could have a significant impact on the state's economy and the health of its residents. The release of the report comes on the day that British Prime Minister Tony Blair and California governor Arnold Schwarzenegger signed a climate pact agreeing to reduce greenhouse gas emissions.
Global Warming Threatens Australia's Tropical Biodiversity
(07/25/2006) Global climate change will pose serious challenges for wildlife populations around the world in the coming decades. The findings of Dr. Stephen Williams (Centre for Tropical Biodiversity and Climate Change, James Cook University) suggest that endemic wildlife populations in Australia's Wet Tropics World Heritage Area will be particularly vulnerable to the local warming trend.
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