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Ecological destruction fuels emerging diseases
...e destruction of habitat by human activity and the extinction of species around the world is more than a looming environmental catastrophe, warns a Canadian zoologist. This ecological damage also endangers human health by turning parasites into "evolutionary land mines." Dr. Daniel (Dan) Brooks, a parasitologi......survive, Smith speculates that substantial species extinction may have occurred in the whale fall fauna. “The deep ocean appears to be a major reservoir of biodiversity on the planet. Some of the oddest animals ever discovered occur on whale falls,?says Smith. “These communities are the undertakers of the deep,...Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra
...us on the direct effects, such as the reduction or extinction of species that are consumed by an introduced predator. This study shows how the effects of introduced species can spread throughout an ecosystem in unpredictable ways," said Donald Croll, an assistant professor of ecology and evolutionary biology at...A new study examines how shared pathogens affect host populations
...sion, a host can be rescued from pathogen-mediated extinction by the presence of a second host with which it shares a pathogen. Sharing a pathogen among one or more alternative species may actually be limiting the spread of the pathogen in any one particular host population. Thus, an epidemic on one species may...Great White shark evolution debate involves WSU Lake Campus geology professor
...changes of life over time and how things like mass extinction affect the course of life," he said. Ciampaglio discussed his shark research findings at recent Geological Society of America meetings in Mississippi and Colorado. A scholarly journal article on the subject is pending. The geologist joined the Lake...Low level of extinction during ice age linked to adaptability
...graduate student may have figured out why rates of extinction were so low for many of the major groups of marine...and sea levels. Those that were not died in a mass extinction that heralded the ice age's onset. "These results not only clue us in to what happened many million...Small species back-up giant marsupial climate change extinction claim
...Downs fossil record. The results suggest that the extinction of Darling Downs megafauna was caused by a massive... megafauna deposits - laid down on the cusp of the extinction event. PhD researcher Gilbert Price, of QUT's School of Natural Resource Science who led the study,...Aggressive aquatic species invading Great Lakes
...ieve that gobies have contributed to or caused the extinction of some native species in Lake Erie, the first lake to be invaded. "Obviously people are concerned about the effects on native species in the other lakes that gobies have now spread to," says Balshine. ...Low oxygen likely made Great Dying worse, greatly delayed recovery
The biggest mass extinction in Earth history some 251 million years ago was preceded by elevated extinction rates before the main event and was followed by a delayed recovery that lasted for millions of years...Scientists reveal the shape of a protein that helps retroviruses break into cells
The biggest mass extinction in Earth history some 251 million years ago was preceded by elevated extinction rates before the main event and was followed by a delayed recovery that lasted for millions of years...FSU scientist warns North Atlantic right whale facing extinction
...ld after 1000 years of whaling brought it close to extinction in the early 20th century. Data compiled by Nowac...ement of shipping and fisheries, right whales face extinction within the next 100 years." The current plight of the North Atlantic right whale stands in stark co...Scientists to mimic nature for newest cancer drugs
...ld after 1000 years of whaling brought it close to extinction in the early 20th century. Data compiled by Nowac...ement of shipping and fisheries, right whales face extinction within the next 100 years." The current plight of the North Atlantic right whale stands in stark co...Size matters: Preventing large mammal extinction
...ing large mammals such as elephants and rhino from extinction could be made more effective by focusing efforts o...udy of its kind analyses key factors linked to the extinction of mammals. "Conservation biologists have always known that large bodied mammals are at greater ris...Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations
...ong mammals dramatically accelerated following the extinction of the dinosaurs about 65 million years ago. Befo...milar genomes. Researchers speculate that the mass extinction opened new ecological niches for mammals, spurring their diversification and the emergence of new ma...Space matters: Estimating species diversity in the fossil record
...current extinctions relies on descriptions of past extinction events, controlling for a paleodiversity¡Varea effect may provide a better frame of reference for understanding the current biodiversity crisis. Thanks to the innovative text-mining tools and approach presented here, future studies can more easily co...Oxygen increase caused mammals to triumph, researchers say
...lacental mammals on Earth at the time of the great extinction of dinosaurs about 65 million years ago, Falkowski.... They were, however, tiny, limited creatures; the extinction event itself, while eliminating the dinosaurs, did little to further the mammalian domination of the...Proposal would allow wild animals to roam North America
...alize ecosystems that have been compromised by the extinction of many of the continent's large mammals, many of them predators. It would also offer ecotourism and land-management jobs to help the struggling economies in rural areas of the Great Plains and Southwest. During the Pleistocene era -- between 1.8 mil...Clear rules needed to govern deep sea bioprospecting: UNU
...th deep sea trawling, have already resulted in the extinction of species." Growing value of products from marine biotechnology The world's oceans host 32 of the 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly...A Father’s Day Gift: Free DNA Paternity Testing
...th deep sea trawling, have already resulted in the extinction of species." Growing value of products from marine biotechnology The world's oceans host 32 of the 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly...Traditional models underestimate extinction rates
... to accurately predict the population dynamics and extinction risk of potentially endangered species has never b...s traditionally used to estimate the likelihood of extinction and shows that because they ignore a critical parameter in projecting risk, they underestimate extin...Skull study sheds light on dinosaur diversity
...nosaur era but were thought to have been pushed to extinction by more specialized plant-eaters at the end of that era. New discoveries, however, are showing that one lineage of sauropods diversified at the end of the dinosaur era, University of Michigan paleontologist Jeffrey Wilson says. Wilson's recent rest...India's smoking gun: Dino-killing eruptions
...sm and impact," she said. And that is the K-T mass extinction that ended the reign of the dinosaurs. "Our view i...pact had not occurred." Wiped out in the K-T mass extinction were 80-90% of marine species and about 85% of land species. All land animals larger than 25 kg (55 ...Costly breeding programs for endangered species pay off
...red populations went extinct, compared to just one extinction for the MAI lines. "Apparently, the stressful environment served to select only the most fit lines while the more benign environment allowed low-fitness lines to persist in captivity," said Meffert. Though the findings clearly support the case for ...Study shows big game hunters, not climate change, killed off sloths
...ot the last ice age are the likely culprits in the extinction of giant ground sloths and other North American gr...ek. "If climate were the major factor driving the extinction of ground sloths, you would expect the extinctions to occur at about the same time on both the islan...Seeing the forest and the trees
... diversity that resulted from a range of different extinction scenarios: those governed by biological characteri...found in tropical forests. By simulating different extinction scenarios and analyzing the resulting mix of tree species, the team was able to determine how much c...Extinct giant deer's descendant found in UK
...antic antlers) lived from 400,000 years ago to its extinction 8000 years ago and would have towered over its descendant, reaching a shoulder height of around two metres with antlers spanning 3.5 metres (10 feet). Deer from around the world (including the southeast Asian axis deer, the hog deer and fallow deer)...Study Holds Promise For New Way To Fight HIV
...antic antlers) lived from 400,000 years ago to its extinction 8000 years ago and would have towered over its descendant, reaching a shoulder height of around two metres with antlers spanning 3.5 metres (10 feet). Deer from around the world (including the southeast Asian axis deer, the hog deer and fallow deer)...Scientists must offer solutions for conserving tropical forests in a rapidly changing world
...ust help to mitigate the number of species lost to extinction by enhancing the effectiveness of the network of protected areas. Other applied research will help to rehabilitate degraded lands and to improve agricultural yields and living standards. According to William F. Laurance, Wright's colleague at STRI a...Seafloor creatures destroyed by ice action during ice ages
... been thought that these ecosystems somehow dodged extinction by recolonising from nearby habitats that escaped obliteration. But researchers at the National Oceanography Centre, Southampton (NOC) and the British Antarctic Survey (BAS) reveal a bleaker scenario. Dr Sven Thatje, an ecologist at NOC has been wor...Gene therapy may protect normal tissues during radiation retreatment for lung cancer
... been thought that these ecosystems somehow dodged extinction by recolonising from nearby habitats that escaped obliteration. But researchers at the National Oceanography Centre, Southampton (NOC) and the British Antarctic Survey (BAS) reveal a bleaker scenario. Dr Sven Thatje, an ecologist at NOC has been wor...Removing egg from nest may help save endangered whooping crane
...e same whether one egg or two is laid, the risk of extinction for the Wood Buffalo-Aransas whooping crane population is lowest when eggs are removed, says Boyce. He recognizes the need to minimize human influence in national parks, but says priority should be given to ensure persistence of threatened and endan...Islands in the Genome Promote Speciation
...er rate of extinction. Speciation, adaptation, and extinction are all controlled by the interplay between genetic and environmental factors. Understanding the genetic changes that lead to the formation of new species is an important area of research in evolutionary biology. In a new study, Thomas Turner, Matth...Adult stem cells aid recovery in animal model of cerebral palsy
...er rate of extinction. Speciation, adaptation, and extinction are all controlled by the interplay between genetic and environmental factors. Understanding the genetic changes that lead to the formation of new species is an important area of research in evolutionary biology. In a new study, Thomas Turner, Matth...Scientists sequence DNA of woolly mammoth
...ify the role environmental changes did play in the extinction of an entire species. Initial funding for this study was provided by McMaster University, The Natural Sciences and Engineering Research Council of Canada, and Penn State University. The researchers now are seeking funding for the completion of the ...Seal rookeries could provide a reliable food source for endangered California condors, study finds
...condors on the West Coast survived the Pleistocene extinction by switching to marine mammals--large carcasses of...g the eggs. That pushed them right to the brink of extinction until they hardly had any food left." By the 1980s, only two-dozen condors remained in the wild, pr...New study pinpoints epicenters of Earth's imminent extinctions
... the world would help stave off an imminent global extinction crisis, according to new research published today ...rd), and the Sulu bleeding-heart (a dove). While extinction is a natural process, the authors note that current human-caused rates of species loss are 100-1,000...Pretreating rogue cancer cells with aspirin cripples their resistance to targeted therapy
... the world would help stave off an imminent global extinction crisis, according to new research published today ...rd), and the Sulu bleeding-heart (a dove). While extinction is a natural process, the authors note that current human-caused rates of species loss are 100-1,000...Why the Amazon rainforest is so rich in species
.... Species split at very different rates, and their extinction or transformation is mostly determined by the ecology and biology of each species. We want to discover more about why some species survive and multiply, while others remain static or become extinct." Around 40% of the world's species can be found in...Pitt professor's theory of evolution gets boost from cell research
...can't do a quick fix on the environment to prevent extinction because the cause of the mutation occurred some time in the past, and you don't know what the cause of the stress was at that time," Schwartz said. "This new understanding of how organisms change provides us with an opportunity to forestall the dama...Genetic study shows humans have pushed orangutans to the brink of extinction
...e genetic study shows that there is a high risk of extinction of the orangutan in Sabah in the near future if this decline goes on unabated," says Marc Ancrenaz, who also participated in the study. "The major threat to the long-term survival of orangutans in Sabah is linked with oil palm plantation development ...Activation of a protein solidifies fear memory in the brain
... other memory processes after retrieval, including extinction of fear memory, further showing that our findings are specific for a reconsolidation process." She said enhancement of reconsolidation may contribute to the development of maladaptive memories in psychiatric disorders such as post-traumatic stress d...Ancient DNA provides clues to the evolution of social behavior
... she says. ''They're the survivors of the last big extinction event, so it seems logical to me that we should know how they did that.'' ...Extinctions linked to climate change
...new report that links global warming to the recent extinction of dozens of amphibian species in tropical America...plex relationship between global warming and major extinction of species. "This new study is a breakthrough, and the powerful synergy between pathogen transmiss...Climate change drives widespread amphibian extinctions
...species around the world teetering on the brink of extinction or has already pushed them into the abyss. "Disease is the bullet that's killing the frogs," said J. Alan Pounds, the study's lead scientist affiliated with the Tropical Science Center's Monteverde Cloud Forest Preserve in Costa Rica. "But climate c...Scientists discover dozens of new species in 'Lost World' of western New Guinea
...ecies. Large mammals that have been hunted to near extinction elsewhere were here in abundance. We were able to simply pick up two Long-Beaked Echidnas, a primitive egg-laying mammal that is little known." The discoveries solved one major ornithological mystery ?the location of the homeland of Berlepsch's Six-...Invasive exotic plants helped by natural enemies
...any of the resident herbivores have been hunted to extinction by early settlers, often times to make room for their own domesticated and feral herbivores from the old world," said Parker. He also noted that this radical shift in herbivore composition may favor exotic plants over natives. Recent research, incl...Crucial site for endangered frogs and birds saved
... save several species of birds and amphibians from extinction shows the importance of conservation partnerships such as the Alliance for Zero Extinction," said Claude Gascon, CI's senior vice president for regional programs. "By working together, we were able to forever protect a site identified by AZE as the l...Insect predation sheds light on food web recovery after the dinosaur extinction
...very of biodiversity after the end-Cretaceous mass extinction was much more chaotic than previously thought, acc... out of balance, not linked as they are today. The extinction took place 65.5 million years ago. Labeled the K-T extinction, it marks the beginning of the Cenozoi...New tiger report release: Tiger habitat down from just a decade ago
...e populations like tigers are highly vulnerable to extinction in small and isolated reserves. Half the 76 landscapes can still support 100 tigers or more, providing excellent opportunities for recovery of wild tiger populations. The largest tiger landscapes exist in the Russian Far East and India. Southeast A...Ready, set, mutate?and may the best microbe win
...of the fermentor. Three of the five were driven to extinction within a couple of days, and the final two fought it out over the remaining three weeks of the test. The research included a raft of additional experiments as well. The team characterized each of the mutant proteins to document precisely how it aide...Colombian frog believed extinct found alive
...s that feed on mosquitoes carrying the disease. An extinction crisis among amphibians indicates drastic environmental changes caused by human impact such as deforestation and global warming. ...Agriculture and tropical conservation: rethinking old ideas
...perate this way, with a continual process of local extinction and re-migration. When you couple that ecological ...on't travel through them to repopulate areas where extinction has occurred. But that's not the case if the intervening areas are traditional "agroforests"---farms...UNH researcher restoring oyster reefs to Great Bay
...from exuberant overharvesting. "We have seen local extinction on some reefs," says Ray Grizzle, research associate professor at the University of New Hampshire's Jackson Estuarine Laboratory. Now Grizzle is working to bring oysters back to Great Bay ?lots of them. He's helping the state of New Hampshire meet ...... According to the researchers, "The ecological extinction of green turtles transformed an ecosystem with diverse species of seagrass dominated by large herbivores into a detritus-based ecosystem dominated by overgrown monocultures of one species of grass." Green turtles feed mostly on turtle grass, while ...Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs
...and the world a unique jewel that will prevent the extinction of threatened species of birds and frogs found now...roAves president and an active herpetologist. "The extinction crisis is wiping out so many important environmental indicator species, such as Atelopus frogs, befo...Man may have caused pre-historic extinctions
...istoric horses in Alaska may have been hunted into extinction by man, rather than by climate change as previousl...hat the wild horses became extinct long before the extinction of mammoths and the arrival of humans from Asia - ruling out the possibility that they were over-hun...Far more than a meteor killed dinos
...o thirds of all species in one of the largest mass extinction events in the history of life. It's that impact ?n...rta Keller, "because this impact predates the mass extinction and apparently didn't cause any extinctions." Keller is scheduled to present that evidence at the...A human taste for rarity spells disaster for endangered species
...loitation and rarity that drives a species into an extinction vortex. This phenomenon, the authors explain, re...at low population densities, which increases their extinction risk. The authors' model now shows that humans can trigger an "anthropogenic Allee effect" in rare s...'Fruit fly dating game' provides clues to our reproductive prowess
...o thirds of all species in one of the largest mass extinction events in the history of life. It's that impact ?n...rta Keller, "because this impact predates the mass extinction and apparently didn't cause any extinctions." Keller is scheduled to present that evidence at the......nean microorganisms were recent arrivals bound for extinction or whether they were permanent fixtures of an unlikely habitat. Also, many scientists have been skeptical of subsurface bacterial communities being completely disconnected from surface ecologies fed by the sun's light. Pratt, Princeton University g...Other ContentsdeletiondeletiondeletiondeletiondeletiondenaturedenaturedenaturingdenaturingdenaturingdendritesdendritesdendritesdendriticdendriticdendriticdendriticdendriticdenguedenguedengueOther TagsWaryCompromisebabibabiDullOther Tagslistening 2listening 3baby 2baby 3baby 4egg 2egg 3egg 4egg 5projects 2projects 3projects 4projects 5projects 6diagnosis 2diagnosis 3diagnosis 4diagnosis 5diagnosis 6diagnosis 7diagnosis 8diagnosis 9diagnosis 10
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(Date:10/7/2008)...true even in the laboratory, where scientists have...happens when their growth is abnormal. , More a...dimensional cell culture systems that allow them t...that more closely mimics the way in which cells gr...ommercial media for growing such cultures. , Dr....
(Date:10/7/2008)...try Applications (CREAF), in the celebration of it...up of international experts to discuss the environ...ber. The work of both days is summarized in the De...ys to Earth Sustainability, which you will find be...ts from all over the world, this document claims t...
(Date:10/7/2008)...ious Diseases (NIAID), part of the National Instit...op new and better diagnostics and treatments for r...of these grants were awarded under Project Bioshie...n the Department of Health and Human Services (HHS...esearch on medical countermeasures against chemica...
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(Date:10/7/2008)...gists at the Moores Cancer Center at the Universit...hoping to stave off the relentless march of advanc...ind of cancer vaccine. While many vaccines attempt...r, the new vaccine, Lucanix, is genetically engine... immune system-suppressing activities. , The fir...
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