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Climate change predicted to drive trees northward
12-03-2007 · EurekAlert!A study based on an extensive data-gathering effort concludes that expected climate change this century could shift the ranges of 130 North American tree species northward by hundreds of kilometers and shrink the ranges by more than half.
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Keywords: climate, change, predicted, drive, trees, northward, tree
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- Drought limits tropical plant distributions, scientists at the Smithsonian report
05-02-2007 · EurekAlert!
Drought tolerance is a critical determinant of tropical plant distributions, researchers working at the Smithsonian Tropical Research Institute in Panama report in the journal Nature, May 3. In a novel coupling of experimental measurements and observed plant distributions across a tropical landscape, drought tolerance predicted plant distributions at both local and regional scales. This mechanism to explain a common observation will contribute significantly to models of land use and climate change.
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- Salty oceans provide early warning for climate change
06-08-2007 · EurekAlert!
Monitoring the saltiness of the ocean water could provide an early indicator of climate change. Significant increases or decreases in salt in key areas could forewarn of climate change in 10 to 20 years time. Presenting their findings at a recent European Science Foundation (ESF) conference, scientists predicted that the waters of the southern hemisphere oceans around South Africa and New Zealand are the places to watch.
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- ESA joins UN climate talks in Kenya
11-06-2006 · European Space Agency (ESA)
The United Nations annual summit on climate change this week in Nairobi, Kenya, seeks to negotiate a successor to the Kyoto Protocol strategy, which becomes obsolete in 2012, to restrict emissions of heat-trapping gases that drive climate change. ESA joins the activities to share results of its satellite-based Kyoto-supporting services.
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- Scientists warn of climate change risk to marine turtles
02-19-2007 · EurekAlert!
North American marine turtles are at risk if global warming occurs at predicted levels, according to scientists from the University of Exeter. An increase in temperatures of just one degree Celsius could completely eliminate the birth of male turtles from some beaches. A rise of three degrees Celsius would lead to extreme levels of infant mortality and declines in nesting beaches across the USA.
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- Toll of climate change on world food supply could be worse than thought
12-03-2007 · EurekAlert!
Global agriculture, already predicted to be stressed by climate change in coming decades, could go into steep, unanticipated declines in some regions due to complications that scientists have so far inadequately considered, say three new scientific reports. The authors say that progressive changes predicted to stem from 1- to 5-degree C temperature rises in coming decades fail to account for seasonal extremes of heat, drought or rain, multiplier effects of spreading diseases or weeds, and other ecological upsets.
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- Is climate change likely to increase disease in corals?
05-07-2007 · EurekAlert!
High-resolution satellite data of ocean temperature across the Great Barrier Reef reveal that warm temperature anomalies can drive outbreaks of coral disease under conditions of high coral cover.
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- Ancient coral reef tells the history of Kenya's soil erosion
04-10-2007 · EurekAlert!
Coral reefs, like tree rings, are natural archives of climate change. But oceanic corals also provide a faithful account of how people make use of land through history, says Stanford University scientist Robert B. Dunbar. In a recent study published in Geophysical Research Letters, Dunbar and his colleagues used coral samples from the Indian Ocean to create a 300-year record of soil erosion in Kenya.
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- Climate change could diminish drinking water more than expected
11-06-2007 · EurekAlert!
As sea levels rise, coastal communities could lose up to 50 percent more of their fresh water supplies than previously thought, according to a new study from Ohio State University. Hydrologists here have simulated how saltwater will intrude into fresh water aquifers, given the sea level rise predicted by the Intergovernmental Panel on Climate Change.
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- Antarctic temperatures disagree with climate model predictions
02-15-2007 · EurekAlert!
A new report on climate over the world's southernmost continent shows that temperatures during the late 20th century did not climb as had been predicted by many global climate models. This comes soon after the latest report by the Intergovernmental Panel on Climate Change that strongly supports the conclusion that the Earth's climate as a whole is warming, largely due to human activity. It follows a finding last summer by the same researchers showing no increase in Antarctic precipitation in 50 years.
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- Tundra disappearing at rapid rate
03-05-2007 · EurekAlert!
Forests of spruce trees and shrubs in parts of northern Canada are taking over what were once tundra landscapes -- forcing out the species that lived there. This shift can happen at a much faster speed than scientists originally thought, according to a new University of Alberta study that adds to the growing body of evidence on the effects of climate change.
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