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Tag: "tree" at biology news

Same-sex mating by fungi spawned infection outbreak, evidence suggests

... years ago and another collected from a Eucalyptus tree in San Francisco in 1992. What's more, the Canadian strains shared approximately half of their genetic makeup, suggesting that the two might be related. Further analysis confirmed this initial finding, suggesting that the two C. gattii strains in Va...

Scientists narrow the time limits for the human and chimpanzee split

... and others -- from the branch of the phylogenetic tree that led to humans and apes, which fossil studies have shown is at least 24 million years ago. Using this calibration time, the team estimated that the human-chimp divergence occurred at least 5 million years ago, proportionally about one-fifth of t...

WWF peeks into mysterious life of Borneo's pygmy elephants

...ch of the elephants' habitat has been converted to tree plantations that produce palm oil, the leading exp...ts (in 49 families), including several dipterocarp tree species. This was determined during field tracking that supplements the satellite tracking. It was p...

From one cell, many possible cures

... are so named because they are like the stems on a tree that can produce new leaves and flowers each year." Each stem cell has the ability to divide so as to produce a perfect copy of itself; the copy then can become a "workhorse" cell, such as a bone or nerve cell. Because the stem cell produced by this ...

Amazon trees much older than assumed, raising questions on global climate impact of region

...eam of American and Brazilian researchers studying tree growth in the world's largest tropical region. Us...he researchers revealed an interesting portrait of tree life beneath the limbs of the large trees that dominate tropical forests. They found that most Amazo...

Engineers discover why toucan beaks are models of lightweight strength

...of purposes, from gathering fruit from the tips of tree branches, to defending themselves. Bird beaks are typically either short and thick or long and thin. The Meyers team decided to prospect for a novel material in toucan beaks because they are both long and thick. Emerald Forest Bird Gardens, a Calif...

Sequencing our seas

... and sulfur. "Plants and animals are twigs on the tree of life when compared to the diversity of microbes that surround us," said Matthew Kane, director of NSF's microbial observatories and microbial genome sequencing programs, which also supported the work. "By approaching ecology through genomics, we a...

Wyoming cloud seeding experiment begins this month

... and sulfur. "Plants and animals are twigs on the tree of life when compared to the diversity of microbes that surround us," said Matthew Kane, director of NSF's microbial observatories and microbial genome sequencing programs, which also supported the work. "By approaching ecology through genomics, we a...

Vaccine provides 100 percent protection against avian flu virus in animal study

... and sulfur. "Plants and animals are twigs on the tree of life when compared to the diversity of microbes that surround us," said Matthew Kane, director of NSF's microbial observatories and microbial genome sequencing programs, which also supported the work. "By approaching ecology through genomics, we a...

Sweetgum tree could help lessen shortage of bird flu drug

The sweetgum tree grows widely throughout the country and is known f...e, until now. "Our work gives the hearty sweetgum tree another purpose, one that may help to alleviate the worldwide shortage of shikimic acid," says study...

Computers to save unique type of American red squirrel

... is an introduced species of squirrel. The Abert's tree squirrel likes to eat similar types of food to the reds and also plunders the food middens they build to see them through the winter. Other threats include damage to its habitat by insects and huge forest fires, as well as predation from birds of p...

Genetic study shows humans have pushed orangutans to the brink of extinction

...r their study, the researchers collected hair from tree nests and feces found under nests or near oranguta...ement, but orangutans cannot survive in industrial tree plantations. "This population will disappear forever if these forests are converted to oil-palm a...

Invasive species harms native hardwoods by killing soil fungus

...and plants depend on the fungi for nutrients. When tree seedlings, which depend strongly on AMF, began to ... that diminished microbial activity had suppressed tree growth. Other experiments showed that adding garlic mustard extracts to soil impaired AMF colonizati...

Diverse tropical forests defy metabolic ecology models

...les, Helene Muller-Landau and colleagues show that tree growth, mortality and abundance in fourteen tropic...some very large trees, or the general shape of the tree size distribution curve," explains first author, Helene Muller-Landau from the University of Minneso...

Butterflies lose body fat during metamorphosis

...larva feed solely on the leaves of the rain forest tree Pterocarpus, on which the butterfly lays its eggs. On a daily basis, they measured the food consumption of the larva and then analyzed the fatty acid composition and content of the diet as well as the larva. Once the larva had transformed into bu...

Honeybee decision-making ability rivals any department committee

...ees fly the coop to hunt for a new home, usually a tree cavity, they have a unique method of deciding whic...its queen and half the hive will swarm to a nearby tree and quietly wait while several hundred scouts go house hunting. To explore the decision-making proce...

Deep-rooted plants have much greater impact on climate than experts thought

...oted, driven by chemical potential gradients, with tree roots acting like pipes to allow water to shift around much faster than it could otherwise percolate through the soil. In many plants that exhibit hydraulic redistribution, the tap roots are like the part of an iceberg below water. In some cases thes...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

...uroids pre-dated the T. rex branch of their family tree by about 100 million years. That makes them the ol...they morphed into a different branch of the family tree –?95 million years before cousin T. rex ruled the roost. Researchers say the identification of the ...

New analysis shows three human migrations out of Africa

... in humans does not exist. We humans don't have a tree relationship, rather a trellis. We 're intertwined." ...

Medieval diaries aid scientists ascertain increase in hot spots due to global warming

... it with evidence from as far back as AD 800 (from tree rings, ice cores and shells). The study found ev...en cored to reveal the patterns of wide and narrow tree rings over time - wider rings relating to warmer temperatures. Ice from cores drilled in the Greenl...

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