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Skydiving Salamanders | Earth Wise

June 28, 2022 By EarthWise Leave a Comment

The redwoods of the California coast are the tallest trees in the world.  They are typically a couple of hundred feet tall and the tallest rise to a height of as much as 380 feet.  Scientists have been studying the unique world of the redwood forest canopy for years.  There are multiple animals that actually live up there.  In fact, some spend their entire lives at the top of a single tree.

Over the past 20 years, researchers have been climbing redwoods to observe, capture, and mark salamanders that live in the canopy.  The most arboreal species, called the wandering salamander, is a four-inch-long creature what moves up and down the branches of a tree where it spends its entire life.  The researchers discovered a remarkable ability for the little amphibian.

The salamander readily leaps from perches in the crowns of redwood trees and has the ability to easily maneuver in midair back to a trunk or branch before it plummets to the ground.  When the salamanders were startled by climbing researchers, they simply leap from the canopy and find their way to another perch lower in the tree.

The salamanders assume a skydiving posture with their forelimbs splayed out and can steer themselves by pumping their tails up and down.  They can flip themselves over if they end up upside down.  They have an impressive level of control.

What is most remarkable is that the salamanders, apart from having slightly larger foot pads, look no different from other salamanders that aren’t skydivers.  They have no skin flaps or other anatomical adaptations that would give them the ability to glide.  The researchers hope to eventually figure out just how these creatures have become expert skydivers.

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Skydiving salamanders live in world’s tallest trees

Photo, posted August 5, 2010, courtesy of Benson Kua via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Cloning Ancient Redwoods

January 30, 2019 By EarthWise Leave a Comment

During the 19th and 20th centuries, many of the world’s largest and oldest tress were cut down for their lumber.   Some of these coast redwoods were 3,000 years old and measured 35 feet in diameter.

Today, giant stumps of these ancient redwoods dot the landscape from Oregon to northern California and are a remnant of the old-growth forest that once stretched across much of the Pacific Northwest.

An organization called the Archangel Ancient Tree Archive is dedicated to reestablishing ancient redwood forests to help combat climate change.  Coastal redwoods are not only huge but can grow an average of 10 feet a year.  One of these enormous trees can sequester 250 tons of carbon dioxide over its lifetime, more than 200 times the amount for an average tree.

While many experts thought that the giant stumps were lifeless, arborists at Archangel collected DNA from the stumps of five giant coast redwoods, all larger than the largest tree living today.  They then used this genetic material to grow dozens of saplings, which are clones of the ancient trees, in a process that takes about two-and-a-half years.

To date, the Archangel Ancient Tree Archive has planted nearly 100 of these saplings in the Eden Project garden in Cornwall, England, a couple of hundred in Oregon, and most recently, has planted 75 in the Presidio National Park in San Francisco.

According to arborists at the nonprofit organization, these saplings have extraordinary potential to purify our air, water, and soil for generations to come.  Their hopes are that the new San Francisco ‘super grove’ will be allowed to grow unmolested by manmade or natural disasters and thus propagate forever.

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Arborists Have Cloned Ancient Redwoods From Their Massive Stumps

Photo, posted April 8, 2013, courtesy of Michael Balint via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Ecology Of Dust

January 19, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/12/EW-01-19-18-The-Ecology-of-Dust.mp3

It isn’t something we think about very often, but dust is a connector of ecosystems around the world.  Dust carries various minerals and nutrients to places where such things are in very scarce supply.  This includes the oceans of the world as well as many forests and other ecosystems.  For example, phosphorus-bearing dust carried from the Gobi Desert is essential to the growth of giant redwoods in California’s Sierra Mountains.

[Read more…] about The Ecology Of Dust

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