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Warming Is Outpacing Bird Migrations: Study
French birds are moving northwards in response to climate change, but not fast enough, scientists have found. Researchers found that 105 species of birds are lagging some 182km behind the increases in temperature.
Trees, Plants Migrate Northward into Canadian Arctic
Researchers are studing how climate change is prompting vegetation from southern Canada to creep into the tundra, possibly threatening the northern ecosystem. Areas that were normally occupied by herbs, for example, are becoming occupied by shrubs. The tree line is migrating northwards.
Pacific Shellfish to Migrate to Atlantic Ocean
As the Arctic Ocean warms this century, shellfish, snails and other animals from the Pacific Ocean will resume an invasion of the northern Atlantic that was interrupted by cooling conditions three million years ago, predict Geerat Vermeij, professor of geology at the University of California, Davis, and Peter Roopnarine at the California Academy of Sciences.
Warmer Winters Boost Plant-Destroying Aphids
Milder winters caused by climate change are providing a boost to plant-damaging aphids, scientists have warned. Researchers revealed the familiar garden pest was flying earlier and in larger numbers because of warm conditions in winter and spring. As a result more aphids are on the wing and looking for food in spring and early summer when crops are at their most vulnerable.
Warming Implicated in Jellyfish Explosion
The explosion of jellyfish populations, scientists say, reflects a combination of severe overfishing of natural predators, like tuna, sharks and swordfish; rising sea temperatures caused in part by global warming; and pollution that has depleted oxygen levels in coastal shallows.
Warming is Driving Global Bird Migration
Birds have been moving north in Europe over the past 25 years because of climate change in the vanguard of likely huge shifts in the ranges of plants and animals, scientists said on Wednesday.
Two Polar Bears Spotted in Iceland
A polar bear has been discovered on Iceland, which is hundreds of miles from the threatened species' natural habitat, a local photographer said.
Antarctic Iceberg Suffocates Seals
Weeks after the controversial listing of polar bears as threatened species, new research graphically demonstrates how changes to polar ice can devastate local animals. The findings of a grim new study illustrate the direct, and often immediate, effects that climate change can have on the physiology, behavior and survival of wild species.
Study Tracks Global Ecosystem Changes
Human-generated climate change made flowers bloom sooner and autumn leaves fall later, turned some polar bears into cannibals and some birds into early breeders, a vast global study reported.
Koalas May Fall Victim to Warming
Koalas are threatened by the rising level of carbon dioxide in the atmosphere because it saps nutrients from the eucalyptus leaves they feed on, a researcher said.
Tropical Insects At Risk of Warming-Driven Extinction
Many tropical insects face extinction by the end of this century unless they adapt to the rising global temperatures predicted. Researchers said insects in the tropics were much more sensitive to temperature changes than those elsewhere. In contrast, higher latitudes could experience an insect population boom.
Warming of US West Triggers Ecosystem Changes
The West is heating up faster than any other region in the continental U.S. with more catastrophic wildfires among the consequences.
Earlier Springtimes Threaten Species
The fingerprints of man-made climate change are evident in seasonal timing changes for thousands of species on Earth. More than 30 scientists told The Associated Press how global warming is affecting plants and animals at springtime across the country, in nearly every state.
Pythons Predicted to Migrate to Midwestern US
Twenty-foot pythons could soon be on the march--or on the slither--to new parts of North America, thanks to global warming. Climate modeling for the year 2100 which shows the possible climate range for pythons moving northward and swallowing up northernmost parts of Texas and Arkansas, the southeast half of Kansas, the southern half of Missouri and parts of southern Illinois and Indiana. Further east the big snakes could comfortably creep through Tennessee, Kentucky, Maryland, Delaware and southern New Jersey.
Sharks Move Toward Antarctica
Antarctica's marine life will be wiped out by an invasion of sharks, crabs and other predators if global warming continues, scientists have warned.
Thousands of Walruses Die in Warming-Driven Stampede
In what some scientists see as another alarming consequence of global warming, thousands of Pacific walruses above the Arctic Circle were killed in stampedes earlier this year after the disappearance of sea ice caused them to crowd onto the shoreline in extraordinary numbers.
Expanding Tropics Seen Altering Global Weather Patterns
The tropical belt that girdles the Earth is expanding north and south, which could have dire consequences for large regions of the world where the climate is likely to become more arid or more stormy. Climate change is having a dramatic impact on the tropics by pushing their boundaries towards the poles at an unprecedented rate not foreseen by computer models.
Fish Migrations in Northeast Reflect Warming
Once, natural events in Narragansett Bay occurred with the predictability of the tides: Thick ice clung to the shore in February. Giant phytoplankton blooms tinted the water green by March. Striped bass began to move to warmer waters by mid-October. No longer. Winter surfers off Narragansett Town Beach rarely have to slosh through frozen chunks anymore. Those blooms, which rained nutrients down to bottom-dwelling creatures, have all but disappeared. Fishermen regularly brag about catching striped bass in
mid-November. Narragansett Bay's natural timing is out of sync.
Fossil Record Ties Warming Seas to Mass Extinctions
Whenever the world's tropical seas warm several degrees, Earth has experienced mass extinctions over millions of years, according to a first-of-its-kind statistical study of fossil records. And scientists fear it may be about to happen again -- but in a matter of several decades, not tens of millions of years.
Great Lakes See Water Levels Drop to Record Lows
Drought and mild temperatures have pushed Lake Superior's water level to its lowest point on record for this time of year, continuing a downward spiral across the Great Lakes.
Warming Raises Extinction Threat to more than 16,000 species
More species are under threat than ever before according to the World Conservation Union. Its Red List, published on Wednesday September 12th, gives warning that 16,306 species are under threat of extinction, nearly 200 more than in 2005.
Polar Bears, a 40,000-year Presence, May Be Extinct in 2050
Two-thirds of the world's polar bears will be killed off by 2050 and the entire population gone from Alaska because of thinning sea ice from global warming in the Arctic, government scientists forecast.
Warming Waters Leave Gray Whales Malnourished
Scientists are reporting an unusually high number of scrawny whales this year for the first time since malnourishment and disease claimed a third of the gray whale population in 1999 and 2000. They suspect it may be the same cause that triggered the die-off eight years ago: rapid warming of Arctic waters where the whales feed.
Warming Empties Chilean Lake
Scientists in Chile have blamed climate change for the sudden disappearance of a lake in the south of the country. Experts say melting glaciers put pressure on an ice wall that acted as a dam, causing it to give way.
Adelie Penguins Fall Victim to Warming
These days Adelie penguins are being stalked by a threat they cannot see and cannot fight off: the weather. The birds, which have adapted over millions of years to the most extreme climate on Earth, are beginning to die off by the tens of thousands as a result of global warming.
Spring Comes Earlier to Arctic Greenland
Plants and animals in upper Greenland have adapted their lifecycles to the arrival of the Arctic spring several weeks earlier than a decade ago.
Caterpillars Devastate Trees After Warm, Dry Spring
Leaf-eating gypsy moth caterpillars are out in force in parts of the mid-Atlantic following a warm, dry spring just the kind of weather that can make the insects thrive. Experts are predicting an especially bad year for trees, primarily oaks, which are the caterpillars' favorite snack. The moths will also munch on 475 types of foliage.
Three Species Go Extinct Every Hour
Human activities are wiping out three animal or plant species every hour and the world must do more to slow the worst spate of extinctions since the dinosaurs by 2010, the United Nations said.
Warming Confuses Migratory Patterns of Many Species
Birds, whales and other migratory creatures are suffering from global warming that puts them in the wrong place at the wrong time. A warmer climate disrupts the biological clocks of migratory species including bats, dolphins, antelopes or turtles, said Lahcen el Kabiri, deputy head of the U.N.'s Convention on Migratory Species, adding: "They are the most visible warning signs -- indicators signalling the dramatic changes to our ecosystems caused in part by climate change,"
Butterflies Are Hatching Two Months Early in U.K.
The hottest April on record in Britain has meant butterflies are hatching up to two months early. The charity Butterfly Conservation said butterflies had been emerging an average of half a day earlier each year from the mid-Seventies until last year. But Richard Fox, of the charity, said: "This year has blown all that away. We have had lots of species coming out two weeks earlier than last year, some a month or two months early. It's really a very dramatic situation."
Florida Feels Real-Time Impacts of Climate Change
Florida, with 1,200 miles of vulnerable coastline, is feeling real-time c climatic effects that are foreshadowing bigger consequences: Sea levels are rising twice as fast as once predicted, eroding shorelines. Higher temperatures are shifting tropical conditions farther north. Oceans are more acidic. Seas are hotter. Droughts may be increasing, while periods of intense rainfall are farther apart.
Australian Sea Life Moves South
Global warming is starting to have a significant impact on Australian marine life, driving fish and seabirds south and threatening coral reefs. Already, nesting sea turtles, yellow-fin tuna, dugongs and stinging jellyfish are examples of marine life moving south as seas warm, said the report by the government-backed Commonwealth Scientific and Industrial Research Organisation.
Arctic Ice Melt Prods Collapse of Cod Industry
A rush of cold fresh water from the Arctic contributed to the collapse of the northwest Atlantic cod industry and is fueling a boom of snow crab and shrimp in the waters off New England and eastern Canada. A reversal of wind direction with a record drop in Arctic air pressure pumped the water through the Canadian archipelago in the late 1980s and 1990s. The cold water helped spoil the cod habitat while improving conditions for snow crab and shrimp.
Warming Accelerates Evolution of Weeds
Fast-growing weeds have evolved over a few generations to adapt to climate change, which could signal the start of an "evolution explosion" in response to global warming.
India Bird Sanctuary Decimated by Drought
The world-famous Bharatpur bird sanctuary in western India is facing a shortage of birds because of severe water scarcity, officials say.
Migratory birds visiting the area in Rajasthan state are down to only about 100 compared to some 10,000 last year.
Spanish Bears Stop Hibernating
Bears have stopped hibernating in the mountains of northern Spain, in what may be one of the strongest signals yet of how much climate change is affecting the natural world. Bears normally slumber throughout the winter, slowing their body rhythms to a minimum and drawing on stored resources, because frozen weather makes food too scarce to find.
Warm Winter Keeps Migrating Birds At Home
Some European birds have failed to fly south for the winter, apparently lured to stay by weeks of mild weather that experts widely link to global warming. Such birds as robins, thrushes and ducks that would normally fly south from Scandinavia have been seen in December -- long after snow usually drives them south. And Siberian swans have been late reaching western Europe.
Warming Is Drying Out Parts of Africa
A pair of orbiting satellites have surveyed the Earth's water in unprecedented detail, showing sharp decreases in parts of Africa over the past five years, scientists said. Said Prof. Jay Famiglietti, of the University of California, Irvine, told the fall meeting of the American Geophysical Union. "It's a very sensitive indicator of climate change."
Researchers Find Huge Drop in Phytoplankton
New NASA satellite data find that the vital base of the ocean food web shrinks when the world's seas get hotter. And that discovery has scientists worried about how much food marine life will have as global warming progresses. The data show a significant link between warmer water and reduced production of phytoplankton in the world's oceans.
Change in Seasons Seen in Alpine Areas
Flowers are blooming on the slopes of Alpine ski resorts and bears are having trouble hibernating in Siberia amid a late start to winter that may be a portent of global warming.
Warming Is Accelerating Extinctions of Species
Animal and plant species have begun dying off or changing sooner than predicted because of global warming, a review of hundreds of research studies contends.
Study Finds Big Rise in Polar Bear Mortality
Polar bear cubs in Alaska's Beaufort Sea are much less likely to survive compared to about 20 years ago, probably due to melting sea ice caused by global warming, a study released on Wednesday by the US Geological Survey said.
Britain Sees Northward Migration of More than 200 Species
Across Britain, animals are on the march, moving northwards and going to higher ground as the climate warms, experts have told a major conference. Of some 300 species, about 80% have extended the northern margin of their domains, with an average shift of 30-60km over the past 25 years.
Tropical Fish Flourish Off Rhode Island
An unusually large number of tropical fish have been spotted this summer in Rhode Island waters by divers, fishermen and environmentalists. Among the fish seen so far: juvenile orange filefish, snowy grouper and lookdowns.
Season Changes Are Forcing Evolutionary Changes
Some species of animals are changing genetically in order to adapt to rapid climate change within just a few generations. Smaller animals that can breed quickly, such as squirrels, some birds and insects, are showing signs of evolving new patterns of behaviour to increase their chances of survival. Many of the genetic adaptations result from changes in the length of the seasons rather than the absolute increases in summer temperatures.
Poison Ivy Growth Spurred by CO2
Another reason to worry about global warming: more and itchier poison ivy. The noxious vine grows faster and bigger as carbon dioxide levels in the atmosphere rise, researchers report.
Chesapeake Bay Ecosystems At Risk From Excessive Heat
"If we have another hot summer like last summer, the change in the Chesapeake Bay could be catastrophic. We are quite concerned that ... global warming is having rapid impacts in many areas of the world for animal and plant species, including the eelgrass here," said one researcher.
Scientists Foresee Thousands of Coming Extinctions
Scientists said their study backed an earlier report that suggested global warming could commit a quarter of the world's species to extinction by 2050.
Researchers Link Warming to Accelerated Evolution
Research on toads, frogs, salamanders, fish, lizards, squirrels and plants are all showing evidence that some species are attempting to adapt to new conditions in a time frame of decades, not eons, say biologists. One of the biggest reasons for all this evolution right now may be that human-induced changes to climate and landscapes give species few other options.
Climate Changes Limit Grey Whale Migrations
The number of grey whales making a yearly migration from the icy North Pacific to breed in Mexico's warm lagoons has dropped this year, scientists say, possibly because of changing weather patterns.
Polar Bears Becoming Endangered by Warming
Amid concerns that global warming is melting away the icy habitats where polar bears live, the federal government is reviewing whether protection may be warranted under the Endangered Species Act.
Researchers See Warming Behind Pacific Seabird Dieoffs
The mass starvation deaths of murres on Tatoosh Island off the Olympic Peninsula may be due in part to unusual weather patterns along the West Coast, scientists say. They were unable to trace the source of the strange weather, except to consider global warming's effects in the past year.
Preliminary Study Implicates Warming in Frog Dieoffs
Scientists studying a fast-dwindling genus of colorful harlequin frogs in Central and South America are reporting that global warming is combining with a spreading fungus to kill off many species. They implicate global warming because patterns of fungus outbreaks and extinctions in widely dispersed patches of habitat were synchronized in a way that could not be explained by chance.
Warming Arctic Brings Return of Blue Mussels After 1,000 Years
After a thousand years, blue mussels -- helped along by warmer water temperatures -- have returned to high Arctic seas.
Their comeback could have serious implications for Arctic ecosystems and may be a sign of climate change, according to scientists.
Desertification Seen Accelerating in Africa as Climate Warms
Africa may experience large-scale increases in desertification as the atmosphere warms. The immense dunefields of the Kalahari could be stirred up. Large areas of currently productive land could become engulfed by shifting sands -- with "drastic" social consequences.
Thawing Permafrost Is Drying Siberian Lakes
An accelerating Arctic warming trend over the past quarter of a century has dramatically dried up more than a thousand large lakes in Siberia, probably because the permafrost beneath them has begun to thaw, according to a paper to be published today in the journal Science.
RCCE Would Decimate Marine Food Chain
If the North Atlantic Ocean's circulation system is shut down -- an apocalyptic global-warming scenario -- the impact on the world's food supplies would be disastrous, a study said Thursday. The shutdown would cause global stocks of plankton, a vital early link in the food chain, to decline by a fifth while plankton stocks in the North Atlantic itself would shrink by more than half, it said. A massive decline of plankton stocks could have catastrophic effects on fisheries and human food supply in the affection regions.
Warming Drives Plankton Migration
Global warming is causing microscopic marine life in the seas around the UK to move north, in the biggest shift in the past 100 years and raising concerns that other marine species could follow, according to a Government report out today.
Grass Grows in Warming Antarctica
Grass has become established in Antarctica for the first time, showing the continent is warming to temperatures unseen for 10,000 years.
Marine Food Chain Threatened by Antarctic Warming
Climate change and disappearing sea ice in the Southern Ocean are causing food shortages that could threaten Antarctic whales, seals and penguins, scientists say. The vanishing ice in the winter has resulted in an 80% drop in the number of Antarctic krill, a shrimp-like crustacean that is a major source of food for animals in the region.
Ecosystems Disrupted by Enhanced CO2 -- Even Without Warming
Recent scientific discoveries hint at disastrous disruptive effects of increased CO2 concentrations on ecosystems - effects that are quite distinct from the climatic effects of this gas.
Drought Drives Thirsty Kangaroos into Australian Cities
Australian environmentalists are threatening to act as human shields to stop shooters from culling kangaroos, which have reached pest proportions in the national capital as a severe drought hits surrounding areas.
Drought Causes Drop in Duck Population
The duck population in the United States and Canada dropped 11 percent from a year ago as drought dried up breeding grounds, said the U.S. Fish and Wildlife Service and Canadian Wildlife Service.
Hawaii Sees Varied Impacts of Climate Change
Whale Skate Island in the Northwest Hawaiian Islands was a tiny dot of land in the vast Pacific, about 10 to 15 acres in size. It was covered with vegetation, nesting seabirds, Hawaiian monk seals and turtles laying eggs. It no longer exists. "That island in the course of 20 years has completely disappeared" with rising sea levels, said a U.S. Fish and Wildlife Service wildlife biologist. "It washed away."
Warming Water Changing U.K. Fish Population
Cod and other coldwater fish in the North Sea and North Atlantic could soon be replaced by subtropical marine species such as tuna, sharks and sea horses lured by warmer waters caused by climate change. One of Britain's leading marine scientists has warned that a minor change in temperature of the seas off the north-west coast of Scotland and the rest of the UK is having a dramatic effect on traditional marine life.
Turtles Laying Eggs Earlier Due to Warming
Loggerhead sea turtles along Florida's Atlantic coast are laying their eggs about 10 days earlier than they did 15 years ago, a change that researchers believe was caused by global warming.
Warming Threatens Tropical Cloud Forests
A warming climate threatens tropical mountain cloud forests that supply water to millions of people in Africa and Latin America including in the capitals of Honduras, Ecuador, Mexico, and Tanzania. The habitats could disappear because of a factors including a warmer climate.
Scientists See Warming Driving Mass Extinctions
In the first study of its kind, researchers in a range of habitats including northern Britain, the wet tropics of northeastern Australia and the Mexican desert said yesterday that global warming at currently predicted rates will drive 15 to 37 percent of living species toward extinction by mid-century. That could amount to the extinction of one million species in the next 50 years.
Changing Climate Threatens Extinction of Monarch Butterflies
Monarch butterflies, which journey hundreds of miles to spend the winter in a mountain forest in Mexico, may be endangered within 50 years because a changing climate could make their winter refuge too wet and cool.
North Sea Undergoing "Ecological Meltdown" Due to Warming
The North Sea is undergoing "ecological meltdown" as a result of global warming, according to startling new research. Scientists say that they are witnessing "a collapse in the system", with devastating implications for fisheries and wildlife. Record sea temperatures are killing off the plankton on which all life in the sea depends, because they underpin the entire marine food chain. Fish stocks and sea bird populations have slumped."A regime shift has taken place and the whole ecology of the North Sea has changed quite dramatically", says Dr Chris Reid, the foundation's director. "We are seeing visual evidence of climate change on a large-scale ecosystem. We are likely to see even greater warming, with
Pika Going Extinct From Climate Change
Scientists believe the American pika, a mountain-dwelling relative of the rabbit, is heading for extinction and will be one of the first mammals to fall victim to climate change. As the climate heats up it is having to go to higher altitudes to find suitable habitats. A study reported in the US Journal of Mammalogy found that in pika populations at 25 places nearly 30% of the animals had gone. The locations are so remote that there seemed to be no other factor than climate change.
Squirrel Reproduction Altered by Warming
University of Alberta researchers recently concluded a 10-year study showing that red squirrels in the Yukon are reproducing earlier in the year in response to global warming and thus being genetically affected by it. "We've been the first to show that this is a genetic change ... and not just behavioral change," said professor Stan Boutin, who led the team that conducted the study.
Scientists: Climate Change Could Drive Mass Extinctions
The worst mass extinction in the history of the planet could be replicated in as little as a century if global warming continues, according to new evidence. Researchers at Bristol University have discovered that a six-degree increase in the global temperature was enough to annihilate up to 95 per cent of species which were alive on Earth at the end of the Permian period, 251 million years ago. Up to six degrees of warming is now predicted for the next century by United Nations scientists from the IPCC if nothing is done about emissions of the greenhouse gases.
Thinning Ice Plus Hunting Threatens Canada Seals
The seal population off Canada's Atlantic Coast is suffering because
Ottawa continues to allow hunters to kill hundreds of thousands of the animals
each year despite clear evidence the ice cover is rapidly thinning, activists
said. Dr. David Lavigne, the IFAW's senior science advisor, said this was hurting
harp and hooded seals, which give birth on the ice in late February and March
and nurse their young for around 12 days.
Melting Ice Threatens Polar Bear Survival
The polar bear could be driven to extinction by global warming within 100
years, warns an ecology expert. The animal, which relies on sea ice to catch seals, is already starting to
suffer the effects of climate changes in areas such as Hudson Bay in Canada. Scientists say Arctic sea ice is melting at a rate of up to 9 percent per decade.
Arctic summers could be ice-free by mid-century.
Small Warming Triggers Large Species Migrations
Gradual warming over the last 100 years has forced a global movement of
animals and plants northward, and it has sped up such perennial spring
activities as flowering and egg hatching across the globe -- two signals that
the Earth and its denizens are dramatically responding to a minute shift in
temperature.
Warming Threatens Reindeers' Food Supply
Scientists warn that reindeer face the possibility of increased starvation. Rain falling
on snow is creating ice that restricts their food supply. Rainfall in the northern latitudes where the animals live has
been increasing in recent years. According to a climate change model put together by researchers
at the University of Washington, things can only get worse.
Drought Threatens Crocodile Reproduction
The lack of
monsoon rains has stopped male crocodiles from producing sperm, breeders say. John Lever, owner of the Koorana Crocodile Farm in
the eastern state of Queensland, said if the drought continued, the female
crocodiles would start to reabsorb their eggs as a survival mechanism.
Warm Winters Fuel Canada Beetle Epidemic
An epidemic of tree-killing beetles is
spreading rapidly through the forests in Canada's largest lumber exporting
province, with the deadly insects now found in a area nearly three-quarters the
size of Sweden, officials said. The tiny pine beetles, which have been spreading almost unchecked through
British Columbia for several years because of unusually warm winters, have
seriously infested 9 million acres (3.6 million hectares) of forests and have
now destroyed up 108 million cubic metres of lodgepole pine timber.
Lobsters Seen As Victims of Warming Water
In Long Island Sound, lobsters had been
killed by a buildup of calcium, the rough equivalent of kidney stones in humans,
and all the evidence pointed to one cause: water so warm that it was impairing
their ability to process minerals. The lobsters were dying from the stress of an
environment that had become hostile to their ancient internal thermostats.
Plant Extinctions Seen Soaring from Warming, Settlements
The percentage of the world's plants threatened with
extinction is much larger than commonly believed, and could be as high as 47
percent if tropical species are included, researchers said. The studychallenges earlier
research that estimated the number of species in danger of extinction was about
13 percent.
Plants are becoming extinct for many reasons, including global warming and
human encroachment into area habitats, said Peter Jorgensen, a researcher at the
Missouri Botanical Gardens in St. Louis who coauthored the new study.
Canadian Polar Bears Threatened by Warming
Polar bears that roam the Hudson Bay area in the great Canadian
North are impatiently waiting for ice to form, and as the winter shortens year
by year their lives are becoming increasingly threatened. The giant white bears need the ice to gain access to ringed and barbed seals
that live and play away from land among the icebergs. For every week a bear has not been ice hunting, it is 10 kilograms lighter.
CO2-driven Vine Growth Seen Choking Trees in Amazonia
Jungle vines are spreading faster in South America's
Amazon rainforest than before, choking trees and potentially slowing the forests' ability to soak up damaging greenhouse gases, scientists say. The spread of woody vines
is the first change in plant composition that scientists have recorded in the
deepest virgin jungle, and suggests mankind is having more impact on delicate
ecosystems than previously shown.
Hawaii Drought-Rain Cycle Boosts Mouse Population
Hawaii health officials are asking residents to do what they
can to help control a booming mouse population on the Big Island, Maui and some
areas of Kauai. Vector control officers are reporting four times as many mice as they usually
see over the summer, State Health Director Bruce Anderson said Tuesday.
Are Giant Squid Due to Warming Waters?
Global warming is causing squid to grow abnormally large and speeding up
their breeding cycles, an Australian scientist said Thursday. Researchers at the Institute of Antarctic and Southern Ocean Studies found
rising water temperatures were also causing squid populations to expand
dramatically.Institute scientist George Jackson said a 1 percent increase in water
temperature caused juvenile squid to double in size.
Jellyfish Flourish As Water Warms
Jellyfish. which are taking over Long Island Sound,
are thriving in large part because water temperatures have risen about 3 degrees
in the past two decades, according to scientists.
Alaska Shows Striking Changes from Warming
To live in Alaska when the average
temperature has risen about seven degrees over the last 30 years means learning
to cope with a landscape that can sink, catch fire or break apart in the turn of
a season.
Salmon, Trout Threatened by Warming Waters
Rising water temperatures caused by
global warming could drive trout and salmon from many U.S. waterways, warns a
new report from two environmental groups. Their study of eight species of fish
suggests that the cold water habitat required by these species could shrink by
more than 40 percent over the next century if steps are not taken to curb
emissions of greenhouse gases.
Jellyfish Boom Driven Partly by Warming Waters
In many places around the world, jellyfish populations are sharply
increasing. Scientists suspect that human activity is to blame.
"When you start to see jellyfish numbers grow and grow, that usually indicates a
stressed system," said one researcher. Those stresses include increased water temperature, a rise in nutrients in
the water and depleted stocks of other fish, all of them often caused by
humans.
Polar Bears Endangered by Warming
A reduction caused by global warming in the massive sheets of
Arctic sea ice that polar bears prowl for their prey could have devastating
consequences for the world's largest land predator, a leading conservation group
said yesterday. The World Wildlife Fund said in a report that polar bears are facing a series
of threats, including large-scale habitat fragmentation, pollution and excessive
hunting, but pointed to the climate change forecast to occur over the coming
decades as the gravest of them all.
Species Redistribution Could Trigger Major Changes
Climate change over the next 50 years will throw delicate ecosystems
off balance, reduce the geographical range of many species and bring new
predators and prey together, scientists said yesterday. Fewer species than expected will become extinct but their distribution could
be radically different in the years to come which will have unpredictable
results for humans.
Warming Drives Turnover of Portuguese Fish Population
Rising water temperatures have dramatically changed the species of
fish in Portugal's Tejo River estuary, the biggest in Western Europe.Maria Jose Costa, director of oceanography at the University of Lisbon, said
global warming had caused such cold-water species as flounder and red mullet
almost to disappear in the last two decades. At the same time, the numbers of warm-water fish such as Senegal sea bream,
common to North African waters, and dogfish have vastly increased.
Seal Pups Casualty of Early Spring
The early disappearance of ice in Canada's Gulf of St. Lawrence,
which some scientists believe is linked to global warming, is wreaking havoc on
harp seals - which give birth on the floes - and causing economic hardship for
hard-pressed fishermen who depend on the controversial spring hunt. Hundreds of drowned seal pups have already washed up on the shores of
Newfoundland after their mothers gave birth in open water, apparently unable to
find ice. The final death toll of pups may be in the hundreds of thousands.
Warming Affecting Species Around the World
Ecosystems around the globe are
showing the effects of climate warming. Earlier arrival of migrant birds,
earlier appearance of butterflies, earlier spawning in amphibians, earlier
flowering of plants - spring has been coming sooner every year since the 1960s,
researchers reported Wednesday.
Vastly Different Vegetation Results from Climate Changes
New research shows that climate change over the past 25,000 years was responsible
for vastly different and constantly changing assemblages of types of trees. The results showed
short lag times and large changes in vegetation in response to rapid climate
change.
Genetic Change in Mosquitoes Linked to Warming
A tiny mosquito that lives in the pitcher plant is evolving in response to
global warming, researchers report. In a study appearing Tuesday in the
Proceedings of the National Academy of Sciences, researchers at the university
of Oregon in Eugene found that global warming is leading the pitcher plant
mosquito, a tiny, fragile species that seldom bothers people, to delay when it
breeds and develops. The pitcher plant mosquito is not considered a pest. But
experts say the study suggests that global warming also could lead to genetic
changes in troublesome insects.
Bird Migrations Changed by Warming
Birders taking part in the annual Christmas count in Maine
are finding that warmer weather has changed the migratory pattern of some
species."'The number of migratory birds has definitely decreased," Tucker said. "We
tend not to see as many birds from farther north. They stay in the Arctic and
Canada because it's warm enough for them." At the same time, birders are now seeing some other birds that weren't seen
as far north as Maine during the winter 20 years ago.
Warming Stresses Put Ecosystems at Risk of Sudden Collapse
After decades of continuous change imposed by human activity, many of the
world's natural ecosystems appear susceptible to sudden catastrophic change, an
international consortium of scientists reported. Coral reefs and tropical
forests are vulnerable, as are northern lakes and forests, the team has found.
"Models have predicted this," said one researcher, "but only in recent years has
enough evidence accumulated to tell us that resilience of many important
ecosystems has become undermined to the point that even the slightest
disturbance can make them collapse."
Season Changes, Warming Are Altering Ecological Relationship
Changes not only in mean temperatures but also in temperature patterns may
affect ecological interactions by altering the
synchronization between species. These changes in plant phenology and bird migration show that climate warming
may lead to a decoupling of species interactions, for example, between plants
and their pollinators or between birds and their plant and insect food supplies.
Penguin Populations Threatened by Warming Waters
Researchers say that around the world,
many penguin populations are declining, and evidence is
mounting that global warming, whether natural or human-induced, is a prime
cause.
Frog Decline Driven By Climate Change
For the first time, scientists have made a direct link between
global warming trends and amphibian declines. Altered precipitation patterns resulted in lower
levels of water in ponds and lakes, where amphibians lay their eggs, making them more susceptible to infection and the effects of ultra-violet radiation.
Collapse of Subarctic Ecosystem Linked to Ocean Warming
Researchers find two degree jump in ocean temperatures may have triggered a cascade of impacts that have decimated sea otter populations and changed the composition of the entire subarctic ecosystem in the Aleutians.
Inuit Cite Migrating Seals, Bears, Insects and Birds
Members of the Inuit tribe in far northwestern Canada say
the evidence of global warming is right outside their door: There are fewer seals and polar bears to hunt, the mosquito population is
booming and migratory birds that have not been seen in the region before are
showing up.
One Third of Earth's Habitats Imperiled by Warming
As the planet warms,
extinction is the forecast for vulnerable animals and plants across more than a
third of the Earth's natural habitat, researchers report in a sweeping new study.In Canada, Russia and Scandinavia, where warming is predicted to be most
rapid, up to 60 percent of habitat could be lost by the end of this century. The report, "Global Warming and Terrestrial Biodiversity Decline," was
released by World Wildlife Fund Canada (WWF-Canada), the David Suzuki Foundation
and the Inuit Tapirisat of Canada (ITC). http://panda.org/resources/publications/climate/speedkills/
CO2 Boosts Spread of Invasive Species
Arid ecosystems, which occupy about 20% of the earth's terrestrial surface
area, have been predicted to be one of the most responsive ecosystem types to
elevated atmospheric CO2 and associated global climate
change. New shoot production of a dominant perennial
shrub is doubled by a 50% increase in atmospheric CO2 concentration
in a high rainfall year. This shift in species composition, driven by global change, has the potential to accelerate the fire
cycle, reduce biodiversity and alter ecosystem function in the deserts of
western North America.
Warming Threatens Migrating Birds
El Nino, the Pacific
current blamed for causing floods, droughts and other weather disasters, also
may help kill off delicate migrating bird populations.
Even subtle changes linked to global warming have profound effects for animal
populations.
More CO2 Leaves Plant Eaters Malnourished (3/00)
While scientists
continue to debate whether elevated concentrations of CO2 and other
greenhouse gasses, such as methane, will lead to significant changes in Earth's
temperature, they agree on one thing. Boosting atmospheric CO2 makes
plants grow faster.Paradoxically, that effect could spell disaster for plant eaters, from
caterpillars to antelope, as well as the animals that dine on these herbivores,
new research suggests. Fast growth often leads to poor nutritional value.
Warming Drives Birds North
British birds are spreading their wings and extending
their range northwards to beat global warming, scientists said. In the past 20 years many birds have pushed their northern boundaries by an
average of 19 km (12 miles). Scientists believe the extension of range is due to climatic warming.
Warming Threatens Collapse of Salmon Fishery
The Fraser River fishery could be almost barren of salmon within a
few decades if water temperatures continue to rise because of global warming. Canada's largest salmon fishery could be the first tangible casualty of
climate change. Even a small change in
the river's temperature could destroy spawning grounds.
Climate Change threatens Polar Bears
Climate change is threatening polar bears with
starvation by shortening their hunting season. One result is the
increasing numbers of hungry bears wandering into northern Canadian
communities.
Starving Whales Casualties of Ocean Warming
Starvation seems the most likely cause of death for more
than 100 grey whales found dead along the North American West Coast. Experts say they had too little blubber to sustain them on their long
migration from Baja Mexico to the Bering Sea.
Population Dynamics of Songbird Affected by Climate Change
In a population of a small songbird, the
dipper (Cinclus cinclus), environmental stochasticity and
density dependence both influenced the population growth rate. About
half of the environmental variance was explained by variation in mean
winter temperature. Including these results in a stochastic model
shows that an expected change in climate will strongly affect the
dynamics of the population, leading to a nonlinear increase in the
carrying capacity and in the expected mean population size.
Warming Fuels Migrations of Birds, Insects, Plants
Warming is pushing birds, fish and insects further north even as it affects plant cycles and animal reproduction patterns by changing the timing of seasons.
North Sea Warming Threatens Cod Survival
The stock of North Sea cod is under pressure because of overfishing. It is also threatened by a decline in the production of young cod
that has paralleled warming of the North Sea over the past ten years. The
combination of a diminished stock and the possible persistence of adverse warm
conditions is endangering the long-term sustainability of cod in the North Sea.
Global Warming Brings More Bugs: Study
Hot weather is good for plants and good for the bugs that eat them. True
today, and it was true 55 million years ago. Insects and plants make up the bulk of life on Earth, and the interplay
between them and climate is of increasing scientific interest as concern grows
over the prospect of future global warming.
Florida Palms Dying from Sea Level Rise
Rising global sea levels are killing cabbage palms and other coastal trees in Florida due to saltwater exposure as sea water pushes up through water tables.
Climate Change Drives Amphibian Extinctions
Extinction of Costa Rican golden toads -- and the decline in other amphibian populations -- appears to be a direct result of climate change.
CO2 Implicated in Coral Deaths
Scientists said they had found another potential threat to
delicate coral reefs, coming from carbon dioxide dissolved in seawater. Excess carbon dioxide from burning coal, gas and other fossil fuels has long
been blamed for helping raise global temperatures through the greenhouse effect,
and such higher temperatures have been blamed for helping kill coral reefs. But now scientists have found that
the excess carbon can also dissolve in the ocean and disrupt complex chemical
reactions that the coral uses to build its reef colonies.
Changing Climate Alters Animal Patterns
For more than 2 decades, climate modelers have warned that
global warming may transform our environment by pushing corn belts north,
expanding deserts, and melting ice caps. Now biologists are compiling an impressive array of data suggesting that climate changes
big and small can have profound effects on species. Climate's fingerprints are
turning up in observations compiled over years and decades.
Plants Migrate Up the Alps
Plant species are migrating to higher
elevations in the Swiss and Austrian Alps, where temperatures ha | |