Drought-induced changes in forest composition amplify effects of climate change

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Gawdzilla Sama
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Drought-induced changes in forest composition amplify effects of climate change

Post by Gawdzilla Sama » Thu Mar 22, 2018 12:07 pm

Drought-induced changes in forest compo ... ate change

Date: March 21, 2018

Source: University of Florida

Summary: The face of American forests is changing, due to climate change-induced shifts in rainfall and temperature that are causing shifts in the abundance of numerous tree species, according to a new article. The result means some forests in the eastern U.S. are already starting to look different, but more important, it means the ability of those forests to soak up carbon is being altered as well, which could in turn bring about further climate change.
The face of American forests is changing, thanks to climate change-induced shifts in rainfall and temperature that are causing shifts in the abundance of numerous tree species, according to a new paper by University of Florida researchers.

The result means some forests in the eastern U.S. are already starting to look different, but more important, it means the ability of those forests to soak up carbon is being altered as well, which could in turn bring about further climate change.

"Although climate change has been less dramatic in the eastern U.S. compared to some other regions, such as Alaska and the southwestern U.S., we were interested to see if there were signals in forest inventory data that might indicate climate-induced changes in eastern U.S. forests," said Jeremy Lichstein, senior author and a UF assistant professor of biology. "The changes we documented are easily masked by other disturbances, which is probably why no one had previously documented them. Without a long-term dataset with millions of trees, we probably could not have detected these changes."

The study appears today in the journal Nature.

Lichstein and his team based their findings on systematic forest inventories of trees in the eastern U.S. from the 1980s to the 2000s. The team looked specifically at forest biomass, tree species composition, and climate variability. The researchers found that decades of changes in water deficit have reduced forest biomass, causing an influx of trees that are more tolerant to drought but slower growing. This shift results in significant changes in forest species composition with their accompanying ecological effects and, moreover, affects the capacity of forest biomass (the mass of living trees) to store carbon. Healthy forests play a key role in global ecosystems as they contain much of the terrestrial biodiversity on the planet and act as a net sink for capturing atmospheric carbon. As climate change affects the forests, so do the forests affect climate change.
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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by gorgeous » Sun Jun 10, 2018 9:24 pm

David Milarch

Twenty years ago, David Milarch, a northern Michigan nurseryman with a penchant for hard living, had a near-death experience. After this experience, angels let him know that the earth was in trouble. Its trees were dying, and without them, human life was in jeopardy. The solution, they told him, was to clone the champion trees of the world — the largest, the hardiest, the ones that had survived millennia and were most resilient to climate change — and create a kind of Noah’s ark of tree genetics. Without knowing if the message had any basis in science, or why he’d been chosen for this task, Milarch began his mission of cloning the world’s great trees. Many scientists and tree experts told him it couldn’t be done, but, twenty years later, his team has successfully cloned some of the world’s oldest trees — among them giant redwoods and sequoias. They have also grown seedlings from the oldest tree in the world, the bristlecone pine Methuselah.
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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by Lance Kennedy » Sun Jun 10, 2018 11:59 pm

Gorgeous

Gawd was detailing an important set of data.

Why the frack do you have to pollute it with superstitious nonsense ?

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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by gorgeous » Mon Jun 11, 2018 12:08 am

Cloning takes California's ancient redwood trees abroad - USA Today



https://www.usatoday.com/story/news/nat ... ./2102667/


Apr 22, 2013 - California's mighty redwoods are going international, cloned in an effort to promote reforestation and deal with climate change. ------"This is a first step toward mass production," said David Milarch, co-founder of Archangel Ancient Tree Archive, a non-profit group spearheading the project, which is planting redwoods Monday (Earth Day) in Australia, New Zealand, Great Britain, Ireland, Canada, Germany and the U.S.-------Archangel has an inventory of several thousand clones in various stages of growth that were taken from more than 70 redwoods and giant sequoias. NASA engineer Steve Craft, who helped arrange for David Milarch to address an agency gathering, said research shows that those species hold much more carbon than other varieties.
Science Fundamentalism...is exactly what happens when there’s a significant, perceived ideological threat to one’s traditions and identity.

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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by Lance Kennedy » Mon Jun 11, 2018 2:10 am

Cloning trees is an old technology. It has been done for at least the last 50 years. Hardly news.

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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by Gord » Mon Jun 11, 2018 3:38 am

"Knowledge grows through infinite timelessness" -- the random fictional Deepak Chopra quote site
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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by bobbo_the_Pragmatist » Mon Jun 11, 2018 3:41 am

Lance Kennedy wrote:Gorgeous

Gawd was detailing an important set of data.

Why the frack do you have to pollute it with superstitious nonsense ?
I disagree. Found the personal background of Milarch to be interesting. A fine addition to any hard data story. "Why do people do what they do?" Should I do it too? ....... etc........
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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by Lance Kennedy » Mon Jun 11, 2018 10:01 pm

Bobbo

If near death experiences lead to scientific advances, then sure.

But since there is no such thing, it is pure superstition.

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Re: Drought-induced changes in forest composition amplify effects of climate change

Post by bobbo_the_Pragmatist » Tue Jun 12, 2018 1:55 am

I skip over the nonsense and focus on what is informative.

Try it.

EDIT: HA, HA...like I'm skipping over the interview with Dennis Rodman. Lots of news today to skip over...........
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