How Fast Climate Warming Could Kill Drought-stressed Trees - MedIndia
According to the scientists, quantitative information on how sensitive drought-stressed trees are to hotter temperatures is critical for predicting drastic, sudden and widespread die-offs.
University of Arizona (UA) researchers and their colleagues transported 20 reproductively mature pinon pine trees from New Mexico to Biosphere 2's glass-enclosed 3.14-acre living laboratory near Oracle, Arizona, for the experiment.
Half the trees were kept in an area at temperatures normal for pinon pine. Half were kept in an area warmer by 4 degrees Celsius, or about 7 degrees Fahrenheit.
Once the trees were established, researchers deprived some of them of water.
Drought killed the trees at the higher temperature 28 percent faster than it killed the trees at the cooler temperature.
When the researchers extrapolated this temperature effect to the region's 100-year historical drought record, they found that widespread pinon pine die-offs can be predicted
MedIndiaHow Fast Climate Warming Could Kill Drought-stressed TreesThe experiments were conducted at the University of Arizona's Biosphere 2. According to the scientists, quantitative information on how sensitive drought-stressed trees are to hotter temperatures is critical for predicting drastic,
Between 1991 and 1993, healthcare costs for Valley fever exceeded $66 million, according to the Pan American Center for Human Ecology and Health. The group Physicians for Social Responsibility says global warming will multiply the incidence due to