Sentences with phrase «lichen species»

There are over 20,000 known lichen species, some of which are well - suited to extreme environments like deserts and arctic tundra.

The researchers plan to expand the study to include more lichen species in the future.

The paper took this form: Molecule X from lichen species Y inhibits the growth of cancer cell Z. To substitute for those variables, I created a database of molecules, lichens, and cancer cell lines and wrote a computer program to generate hundreds of unique papers.

Many lichen species are exquisitely sensitive to air pollution and other environmental changes, so their absence, presence, or health may be able to tell us what is happening to an ecosystem.

A lichen species known as British soldiers sports distinctive, bright red caps atop green stalks.

The discovery that specific yeasts act as third symbiotic partners in lichens began with an investigation into why two lichen species seemed genetically identical but had distinctive attributes.

The South American lichen species often grows in curly masses about the size of a fist.

Not exact matches

A wolf lichen (Letharia vulpina) is one of the species making scientists rethink more than a century of assumptions about what's in a lichen.

This lichen will be named as a separate Cora species.

LICHEN RECOUNT A tropical lichen that biologists long knew as Dictyonema glabratum turns out to be one of at least 100 different species that had been lumped together under that name, DNA studies nowLICHEN RECOUNT A tropical lichen that biologists long knew as Dictyonema glabratum turns out to be one of at least 100 different species that had been lumped together under that name, DNA studies nowlichen that biologists long knew as Dictyonema glabratum turns out to be one of at least 100 different species that had been lumped together under that name, DNA studies now show.

Scientists assumed lichenization had arisen independently many times, because of the diversity of species that form lichens and also because many branches of the fungus family tree have both lichenized and nonlichenized species.

Based on his study of lichens, Swiss botanist Simon Schwendener was the first scientist to propose that some organisms are not autonomous individuals but combinations of unrelated species that work together.

Researchers were surprised to find that many of today's free - wheeling fungi are descended from species that lived in symbiosis with other organisms as lichens.

Up to 20 % of fungal species are thought to live as lichens.

Many now - independent fungi are descended from species that formed lichens (above).

The finding could explain why many genetically similar lichens present wildly different physical features and why scientists have been unable to synthesize lichens in the laboratory, even when combining species that partner successfully in nature.

Although past scientific ignorance of lichens makes it difficult to determine whether they have been impacted as well, at least one species, Umbilicaria mammulata, has not been seen in the region since the 1920s.

The local diversity and unique geologic history (covered by neither glaciers nor oceans for the past 225 million years, the Ozarks provided refuge for migrating species during the Ice Age) explain the richness of the lichens here: some 600 named species, along with 30 recently discovered ones awaiting their official designation.

Because fungi take the more dominant role and cultivate photosynthesizing algae for food, in return providing them a shady, moist, vitamin - rich environment, scientists have classified lichens based on their fungi species.

«These areas are home to the majority of Antarctic species — from seals and seabirds to mosses, lichens and small invertebrates, such as tardigrades and springtails.

In an experiment led by Leopoldo Sancho from the Complutense University of Madrid, two species of lichen — Rhizocarpon geographicum and Xanthoria elegans — were sealed in a capsule and launched on a Russian Soyuz rocket on 31 May 2005.

Lücking and his team collected and sequenced DNA from 376 samples of the leafy lichen and discovered 126 new species among them, many with striking physical differences, according to their study published in June.

Already 15 species new to Estonia have been found, including lichens, spiders and wasps.

MARCH 1959 DARWIN»S MISSING EVIDENCE «Less than a century ago moths of certain species were characterized by their light coloration, which matched such backgrounds as light tree trunks and lichen - covered rocks, on which the moths passed the daylight hours sitting motionless.

► Lightning strikes a lighthouse and we see a close - up of gel spreading and becoming larger at the base of the building where a small fire burns briefly; a wall of gel rises like a curtain from a jungle forest into the sky, making noises like muttering and muffled roars as we hear that the phenomenon is spreading and destroying all species on Earth; five scientists armed with military rifles enter the area to find trees that have become covered with flowers, woody plants have grown into human shapes covered with blossoms, the bodies of three missing soldiers have been engulfed with vines, moss, and lichens that have grown out of the bodies and the head of a soldier is found in a path (we see no blood or facial expression).

During the survey for Santa Rosa Island, Kerry Knudsen, a researcher and lichen curator at UCR, discovered a new species of lichen and named it after President Barack Obama.

It is believed that various men lived here for a time and worked harvesting a species of lichen, Rocella tinctoria, which was used as a dye.

In such areas, only lichens and barnacles species are mostly found.

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Lichens are some of the most implausible but real species on our planet - illustrating how science can be stranger than fiction.

Among those species both small enough to, and living in a position from which they can, become airborne, are microbial leaf - surface pathogens such as Fusarium and lichens such as Cladonia.

I think the idea that the preservation of lots of species of slug, or lichen etc. is a worthy moral goal in its own right is highly questionable.

Construction will inevitably disturb the top layer of soil, called a cryptobiotic crust, which contains dozens of species of moss, lichen, algae and fungi in each square centimeter and is critical to the desert's health, André says.

Yes, it is 2011, soon to be 2012, and the Dinosaurs, the most successful species to ever populate the earth (for approximately five hundred million years) were not extinguished due to their inability to evolve and grow with natural changing conditions, but were simply eliminated by a one - in - a-million extra-terrestrial event over a short period of time (one to three years), as were all forms of sun reliant life with the exception of a few ocean dwelling species, subsurface ground dwelling worms, plant life like lichens and other mindless species able to lie dormant for extended periods of time, as well as nocturnal, ground dwelling little rodents that ate roots, dead or alive, (from which we so - called superior life forms evolved).