According to a new research, California’s native plants are
endangered due to climate changes. By the end of the century, some plants are
to lose about 80 percent of their variety. The speed of climate change may
determine those plants to move approximately a mile a year into more hospitable
habitats.
A scientific study concluded that
in order to avoid extinction, plants should have the ability to migrate to
cooler areas. If not, carbon dioxide emissions should drastically decrease,
reaching the 1990 level.
As far as resettlement concerns,
some plants could move to higher elevations, but the ones that already live in
Alpine areas could not have this possibility, therefore they could get pushed
right off the mountains. Others may encounter difficulties due to their large
seeds (for instance oaks and bay trees). Furthermore, small plants’ seeds will
disperse more easily, with weedy and invasive species belonging to this last
category.
Researchers identified 5,500 native
Californian plants which are at risk of becoming “plant refugees”. Computer
models have been used to predict the outcome of perilous climate fluctuations.
"We found the extent of climate change impact can be very broad,"
stated Hayhoe during an interview. The specialist and his crew identified
specific locations where the native plants would be able to survive. Now they can plan ahead to protect them,
avoiding their disappearance. Planning for native species will be
conservationists’ most important target.
Plants can definitely move
hundreds of miles in thousands of years but scientists wonder whether they
could move fast enough in only one century, in order to survive. The native
habitation isn’t favorable not only as a result of gas emissions and because
the temperature is continuously increasing, but also because the landscape
changes, turning into a more fragmented one, due to agriculture and development.
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