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Amazon basin becoming carbon emitter
Posted by TG Daily: None Given on January 19th, 2012
TG Daily: Deforestation and climate change are having a profound effect on the Amazon basin, shifting it from a carbon sink to a carbon emitter.
The Large-Scale Biosphere-Atmosphere Experiment in the Amazon (LBA) evaluates the connections between climate change, agricultural expansion, logging, and fire risk.
And, concludes the team, there are clear signs of transition to a disturbance-dominated regime in the southern and eastern portions of the Amazon basin.
"Deforestation has moved the net basin-wide...
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Evolution triggered by climate change
Posted by TG Daily: None Given on December 28th, 2011
TG Daily: Six distinct waves of mammal species diversity in North America over the last 65 million years were driven primarily by climate change, new research suggests.
Evolutionary biologists say that on each occasion warming and cooling periods, in two cases confounded by species migrations, marked the transition from one dominant grouping to the next.
"Although we've always known in a general way that mammals respond to climatic change over time, there has been controversy as to whether this can be...
Climate change damaging ancient treasures
Posted by TG Daily: None Given on March 11th, 2011
TG Daily: Climate change is destroying important archaeological remains that have been frozen for thousands of years, a study has shown.
Scientists at the University of Edinburgh's Business School looked at examples of damaged remains frozen in permafrost in the Altai Mountains in central Asia, in sea ice in Alaska and in glaciers in the Rocky Mountains.
They found that all three sites were under threat. Thawing represents a risk to the Altai burial mounds, they say, which contain the only frozen tombs...