News tagged with beavers
Shifting Baselines Confound River Restoration
Sep 01, 2009 |
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Steep reductions in the abundance of fish, shellfish, and other aquatic fauna in recent centuries are not restricted to animals that live in the sea: historical records show that species in rivers and lakes worldwide also ...
Scientist discovers beavers building prime salmon habitat in Skagit Delta
May 24, 2009 |
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As sometimes happens with science, Greg Hood went looking for one thing, and found something else: tidal beavers.
Beavers: Dam good for songbirds
Biology /
Oct 08, 2008 |
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The songbird has a friend in the beaver. According to a study by the Wildlife Conservation Society (WCS), the busy beaver's signature dams provide critical habitat for a variety of migratory songbirds, particularly in the ...
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Beavers and their dams may help amphibians
Biology /
Jan 12, 2007 |
4.6 / 5 (5) |
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The dam-building beaver may be an ally in conserving wetland habitat for declining amphibian populations, a University of Alberta study said.
Improbable 'buckyegg' hatched
Nanotechnology / Nanomaterials
Sep 28, 2006 |
4.3 / 5 (30) |
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An egg-shaped fullerene, or "buckyball egg" has been made and characterized by chemists at UC Davis, Virginia Tech and Emory and Henry College, Va. The unexpected discovery opens new possibilities for structures ...
The Beaver as Chemist: Total Synthesis of Enantiomerically Pure Nupharamine Alkaloids from Castoreum
Feb 16, 2009 |
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(PhysOrg.com) -- Castoreum, the dried scent glands of the Canadian beaver, was once one of the most valuable scent components derived from animals. Castoreum contains a complex mixture of substances, including a number of ...
Beaver-like robots face off in annual MIT contest
May 12, 2008 |
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Robots designed to toss pool-noodle trees into a river of ping-pong balls ruled over competitors focused on rescuing fuzzy toy beavers in this year's 2.007 contest, "Da (yes) MIT, or Save the Baby Beavers," ...
After mastodons and mammoths, a transformed landscape
Space & Earth / Earth Sciences
Nov 19, 2009 |
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(PhysOrg.com) -- Roughly 15,000 years ago, at the end of the last ice age, North America's vast assemblage of large animals -- including such iconic creatures as mammoths, mastodons, camels, horses, ground ...
Natural-born divers and the molecular traces of evolution
Jun 29, 2009 |
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An aquatic lifestyle imposes serious demands for the organism, and this is true even for the tiniest molecules that form our body. When the ancestors of present marine mammals initiated their return to the oceans, their ...
Downstream ecosystems aided by Beaver dams
Jun 05, 2006 |
4.5 / 5 (2) |
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U.S. scientists say beavers, known for their beneficial environmental effects near their dams, are also critical in maintaining downstream ecosystems.
Mastodon Tusk May Be Largest Ever Uncovered In NYS
Other Sciences / Archaeology & Fossils
Oct 23, 2009 |
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(PhysOrg.com) -- Research under way at the New York State Museum indicates that a huge mastodon tusk, recently excavated by Museum scientists in Orange County, may be the largest tusk ever found in New York State.
Blame our evolutionary risk of cancer on body mass
Dec 06, 2006 |
4.7 / 5 (16) |
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A key enzyme that cuts short our cellular lifespan in an effort to thwart cancer has now been linked to body mass. Until now, scientists believed that our relatively long lifespans controlled the expression of telomerase--an ...
Scientists examine effect of wolves' absence and see an ecosystem 'unraveling'
Biology /
Jan 29, 2009 |
4 / 5 (4) |
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No trace remains of the wolves whose howls ricocheted for millennia down the lush valleys of the Olympic Peninsula. Settlers and trappers killed them all in little more than three decades.
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