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ENVIRONMENT: GLOBAL WARMING AND CLIMATE CHANGE :
CHEMISTRY :
MOUNTAINS :
SOIL :
ECOLOGY :
PLANTS:
Climate Change Causes Fundamental Shifts in the Chemistry of Mountain Soil
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Climate Change Causes Fundamental Shifts in the Chemistry of Mountain Soil
New research says the changes will likely displace some plants altogether
and dramatically shift the range of others.
By Bob Berwyn
Pacific Standard
https://psmag.com/
global-warming-is-changing-mountain-soils-8b527fe1b7ec#.d293tdz2z
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A shorter URL for the above link:
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http://tinyurl.com/gl4udu5
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A warming climate will fundamentally change the chemistry of mountain
soils by shifting the balance of nutrients, visibly disrupting fragile,
high-elevation ecosystems of grasses, flowers and trees within decades.
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Most of the worlds mountain regions are warming twice as fast as the
global average, speeding up microbial activity. As a result, the ratio of
two key nutrients, nitrogen and phosphorus, is shifting fast, according to
University of Vermont researcher Nathan Sanders, one of an international
team that studied soil chemistry in seven mountain regions around the
world over the course of a growing season. The changes will likely
displace some plants altogether and dramatically shift the range of
others, he said.
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The results show how some climate change impacts will occur on a global
scale. The scientists made the same findings at mountain plots In Japan,
British Columbia, New Zealand, Patagonia, Colorado, Australia, and Europe:
As temperatures warm, nitrogen increases, but phosphorus does not,
decoupling a critical cycle for plants, Sanders said.
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The study, published last week in the journal Nature, suggests that future
climate warming will substantially alter the way that these sensitive
ecosystems function.
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Were seeing these things become unlinked and trying to understand the
consequences, Sanders said. The results are especially convincing because
the international team made the same findings at so many different sites
around the globe. We studied places with different geology, different
plant communities, and yet we saw the same thing over and over again.
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Instead of heating patches of ground with lamps or greenhouses, this team
of scientists used elevation as a surrogate for climate warming.
Temperature changes with elevation at a steady, known rate. Factoring that
rate into a simple equation with the projected rate of global warming
shows that any given location will have the same temperature in 80 years
as that of an elevation that is 300 meters lower, Sanders explained.
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The complete article may be read at the URL above.
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Sincerely,
David Dillard
Temple University
(215) 204 - 4584
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