Tag: "alien" at biology news
UNC botanist spearheads ongoing effort to curtail movement of pest plant species
...rst North American garden to establish a policy on alien
species that present potential environmental threa... church door, I nailed our statement to a tree, an alien
invader princess tree from Japan, he said. The statement became the inspiration for the St. Louis me...
Invasive gobies prevent sculpin spawning, impacting perch food chain
...he yellow perch's diet--disappear. The gobies, an alien
nuisance fish species similar in size and appearance to the native sculpins, are clearly out-competing them, but how? One critical factor is that round gobies can interfere with mottled sculpin spawning, according to a study funded by Illinois-Indian...
Trouble in paradise? 'Natural' pest control requires careful planning, Science authors conclude
...nd moths) feed on the plants. Parasitoids, such as alien
wasps, lay eggs on the bodies of Lepidoptera cat...ood webs allow ecologists to establish how much an alien
parasitoid species has penetrated the food chain, and to predict the direct and indirect effects of ...
Plants vs. disease: 'Trench warfare at the molecular level'
...ystem behind the cell wall, the plant cell detects alien
proteins and mounts a defense. Although bacterial speck disease has been known since the early 1930s, it did not result in serious losses until the winter tomato crop of 1977-78 in southern Florida. Cool, moist environmental conditions contributed ...
Nile crocodiles threatened by alien weed
...ace local extinction due to a perennial shrub. The alien
plant, known as locally as trifid weed (Chromolaena odorata), has invaded critical shoreline nesting habitat for crocodiles at Greater St. Lucia Wetland Park, a World Heritage Site in northern Kwazulu-Natal and the largest estuarine system in Africa....
Climate change affecting even remote arctic environment, study says
...ffects on Arctic species, permafrost, and sea ice; alien
invasive species are increasingly penetrating the region; and contaminants released thousands of kilometers away are appearing at high levels in human and wildlife communities. The report also highlights the lack of critical information in many areas...
Genetically modified earth plants will glow from Mars
...ouse on the landing vehicle. Despite working with alien
soil they know little about, the biologists are optimistic about the experiment. "I'm confident we can grow plants if we know the pH levels and the oxidizing agents in the Martian soil," Schuerger said. "We'll test the soil before planting, and then...
Weeds in disturbed areas may be source of more medically important compounds than plants in tropical rainforests
...of medicinal plants and self-treatment is somewhat alien
to many Western cultures where going to the doctor and being given a prescription is the standard. The vast majority of people in the world, however, take care of themselves and use healing plants that have been used for hundreds of generations. ...
Passport, please: A global strategy to curb invasive species
..., do zebra mussels, crazy ants or Nile perch. When alien
species invade, they wreak havoc on economies and ...bally acceptable plan. Behind habitat destruction, alien
invasion is the second greatest cause of species extinction worldwide. On islands, alien
Giant jellies invade Gulf of Mexico threatening shrimp fishery
...area's ecosystems is yet to be determined. Similar alien
jellyfish have caused major disruptions in marine fisheries in Europe - in some cases driving out other marine life. "One of the biggest worries is that these jellies will feed directly on the eggs and larvae of the area's fish, shrimp and crabs. ...
A diverse ecosystem offers little or no protection against invading species, says a new UC Berkeley study
...system is inherently more resistant to invasion by alien
species. The question has become more important in recent years as scientists campaign to preserve the planet's biodiversity, focusing on areas with the largest concentration of species, or attempt to restore native habitats and native species in...
International trade imperils U.S. plants, animals and crops
... into mature adults. One of the major sources of alien
pathogens such as fungi are nursery plants imported for the horticultural market. These come into the country carrying foreign contaminants in the soil around their roots or in the roots themselves. Though all nursery stock must be quarantined and ir...
Emerging infectious diseases of wild animals are a threat to biodiversity and human health, according to new report
...species and was originally introduced with exotic, alien
birds." The emergence of infectious diseases without overt human involvement is among the thornier issues facing conservationists. For instance, weather patterns can cause changes in the prevalence of certain parasites that are deadly to some specie...
USGS studies wildfire ecology in the western United States
...he density of vegetation. But in the deserts, too, alien
grasses are now spreading, bringing rapid fire cyc...ed. "The increase in fires seems to be due to the alien
annual grasses," Brooks says. These grasses often build up during years of heavy rainfall and, unlik...
Early detection of Global Change 'symptoms' on the protected areas to be discussed in Italy
...ct on mountains and specialized habitats Invasive alien
organisms Socio-economic implications Options for human intervention Protected areas and their role on biodiversity Networking of national parks and protected areas The Abruzzi Parks: a model case study The Abruzzi parks in the framework ...
H.pylori bacteria and their human hosts
... ANN ARBOR---Half of all American adults have an alien
life form growing in theirstomachs. Most of us will live our entire lives unaware that we have beencolonized by Helicobacter pylori---a species of bacteria which usually producesno symptoms, but can cause ulcers and stomach cancer in some individua...
Under the hood of a cellular transport machine
...d position. The process isreminiscent of images of alien
space ships locking into the mother vessel (seevideo). The new insights come from combining an overall view of a barrel-shaped clathrinlattice, obtained using cryo-electron microscopy by Barbara Pearse andcolleagues at the MRC Laboratory for Molecula...
Stanford launches interdisciplinary initiative in the biological sciences
...and biology. Not to be mistaken for the unknown or alien
"X" of TV's popular "X Files," thenew undertaking is conceived as an eclectic mix of clinical researchers andbasic scientists sharing insights - but with no predetermined agenda. Lastmonth, Spudich, the Douglass M. and Nola Leishman Professor of Card...
The Sagan criteria for life revisited
...sformation -- a first-time view of the Earth as an alien
world. It affirmed that standards of proof may be the most interesting -- and vexing -- piece of the puzzle in the search for life among the stars. Meanwhile, scientists continue to push the limits of their understanding of both the biological and pr...
USGS Finds Palila Population Remaining Stable
...of palila; and developing methods for controlling alien
predators that eatpalila or which significantly alter necessary habitat for food and shelter. USGS biologists also have been collaborating with The Peregrine Fund, which isdeveloping methods for captive propagation of palila....
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