Tag: "extinctions" at biology news
Studying plant adaptation to arctic helps understand the 'steps of wisdom of life'
...the information used in debates about whether some extinctions
are caused by traumatic events such as asteroids, or whether other extinctions
are a gradual process that results from climate changes at a particular time and place. "Were lookin...
December Media Mighlights: GEOLOGY and GSA TODAY
...ooling event during the early Holocene, vertebrate extinctions
during the Permian-Triassic as found in South Afri...ography of Earths surface. Pattern of vertebrate extinctions
across an event bed at the Permian-Triassic boundary in the Karoo Basin of South Africa. Roger M....
Evolutionary 'speed limit' governs how quickly life bounces back after extinction
...rage, about 10 million years to recover fromglobal extinctions
-- whether they involve the loss of most lifeon Earth or wipe out far fewer species. This was much longerthan most scientists thought. The new results come from asking arelated question: How do rates of extinction and diversificationvary, and how a...
Study shows deoxygenating ballast water can prevent invasive species and ship corrosion
...ave been involved in 70% of native aquatic species extinctions
in the last 100 years. Because of these impacts, researchers from all over the world have been developing ways to clear the ballast water of aquatic organisms that may colonize new habitats. But current solutionssuch as intensive filtration, heat tr...
Scientific bias helping cause mass extinction
...extinct and threatened species, the causes of past extinctions
and the causes of any future threat." "The lists a...ate the risk to threatened species and precipitate extinctions
that could otherwise have been avoided." Burgman's NCEAS working group is developing and testing met...
The oceans top 10 coral reef hotspots identified for first time
Study sounds alarm for extinctions
of marine species Washington, D.C. -- The worlds top 10 coral reef hotspots, rich in marine species found only in small areas and therefore highly vulnerable to extinction, are identified for the first time in a study by the Center for Applied Bi...
2.6 billion years of primate and carnivore evolutionary history at risk
...an unprecedented global initiative to stop species extinctions
in biodiversity hotspots and to protect large areas of major tropical wilderness areas. To launch this effort, the Gordon and Betty Moore Foundation is providing CI with the largest gift ever given to a private conservation group, with a series of g...
UCLA to host free symposium April 5 on extinctions in Earths history
...as also focused his research on the causes of mass extinctions
particularly the major event 250 million years ago that was the most severe mass extinction known in the geological record. David Jablonski, Department of Geophysical Sciences, University of Chicago. Jablonski holds a joint appointment with the Fie...
Intels Gordon Moore and CIs Claude Gascon to receive major award
...nes of a battle to protect us from the longer-term extinctions
caused by mankinds activities. Gascon, Senior Vice President of CIs Field Support Division, has spent much of his career in the Amazon Basin mapping and analyzing biodiversity information to serve as a basis for sound conservation planning. He was in...
Study suggests global extinction crisis more serious than previously thought
...itoring endangered animal populations. Population extinctions
are a more sensitive indicator of the loss of biol...the current loss of biodiversity emphasize species extinctions
and patterns of species decline, and do not convey the true extent of the depletion of humanitys nat...
Ocean ecosystems only altered following two great mass extinctions
...2) -- Marine life had to re-evolve after two major extinctions
in order for shrimp and whales and other sea life ...eat extinctions. Previous studies claim five mass extinctions
decreased the diversity of ocean life. But the PNAS article, "Anatomical and Ecological Constraints ...
Extreme climate variance sped extinction of local butterfly populations, researchers say
...nfall highs and lows - on extinction, and tied the extinctions
tightly to a mechanism. "People have long been awa...f population extinctions." Not only are population extinctions
a prelude to species extinctions, but they also threaten the vital ecosystem services upon which hum...
Wildmeat: Overhunting threatens species and people
...sin. Historically, overhunting is blamed for the extinctions
of elephant birds and giant lemurs in Madagascar, ... More recently, hunting has been implicated in the extinctions
of the Alagoas currasow in northeastern Brazil, and Miss Waldron's red colobus monkey in Ghana and t...
DNA shows genetic variability of the nene lost more than 500 years ago, not during the 20th century
... associated with human interference contributed to extinctions
of many bird species in the islands 500 to a thousand years ago. These species, including the nene, likely were affected by habitat changes, introduced predators or directly by their consumption as food. The Smithsonian-led research goes a step fur...
Extinction rates of plants are higher than previously thought
...uter models are important tools to study potential extinctions
and find ways such as reserves to preserve biodiversity. Typically, these assume that development in California is random. "The random model of species loss is overly optimistic," explained Seabloom. "It doesn't take into account the fact that urb...
Sea snake homing instinct could nix translocation
... try to escape. Overexploitation has caused local extinctions
of yellow-lipped sea kraits in the Philippines and Japan. While translocation has been proposed to restore these populations, no one knew if the relocated snakes would stay put. To help assess the likelihood that translocation would restore these sea...
Non-native earthworms may be wiping out rare plants
...studied (nine out of 28) and that these local fern extinctions
were linked to two factors: the presence of a non-native earthworm and a thinner forest floor. The forest floor at "earthworm" sites was only half as thick as that at worm-free sites (about 1.5 vs. 3 inches, respectively). To confirm that this non-n...
GSA release 02-55: Dec. Geology & GSA Today media highlights
...K7 6AA, UK, et al. Pages 11191122. Five great mass extinctions
disrupt the geological record, but they have not b...has been discovered that this "Cinderella" of mass extinctions
is preceded by an earlier extinction event. The first extinction occurs at the Norian-Rhaetian bound...
Increasing biodiversity is not always best
...etermined. The article, "Species Invasions Exceed extinctions
on Islands Worldwide: A Comparative Study of Plant...the fact that "land birds have experienced massive extinctions
on oceanic islands, with many islands losing more than half of their native species," said Gaines. "...
Talking to the animals?
...iverge as a result of subsequent, independent mass extinctions
of vocal learning among various animals, including non-human primates? Though this question remains a mystery for now, Jarvis' latest work suggests that the evolution of vocal learning was accompanied by divergent, specialized expression of an ancien...
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