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Tag: "kilometers" at biology news

Researchers find 24 species believed new to science in Suriname rainforest

... Lely and Nassau plateaus in eastern Suriname, 130 kilometers (80 miles) southeast of Paramaribo, the capital. They found a virtually unexplored region of mountain savannah forest, high dryland rainforest and palm swamp with freshwater sources clean enough to support abundant fish and amphibian life. Among t...

Philandering female felines forgo fidelity

...tahs occupy a home range averaging some 833 square kilometers in size, whereas a male’s territory averages 37 square kilometers. In many carnivore species, it’s the males that have larger ranges that encompass several female ranges. “The picture that emerges is that of wide-ranging females mating with a numb...

Paleontologists discover new mammal from Mesozoic Era

...recovered from Hebei. The fossil site is about 300 kilometers outside of Beijing. The researchers discovered that the skull of Yanoconodon revealed a middle ear structure that is an intermediate step between those of modern mammals and those of near relatives of mammals, also known as mammaliaforms. "This...

Large size crucial for Amazon forest reserves

...n shrinks the Amazon forest by thousands of square kilometers every year, leaving a trail of small forest fragments isolated by cleared land. Many species that occur in intact forest prior to destruction will not be present in a small fragment, but would they be found in an equally small plot surrounded by unto...

Amur leopard still on the brink of extinction, scientists say

...g to Dr Pikunov, a mature leopard needs 500 square kilometers of habitat with good forests and high and stable a...nly in south-west Primorye." About 5000 square kilometers of land in the south-west Primorye region, close to the border between Russia, China and North Korea...

E. coli bacteria migrating between humans, chimps in Ugandan park

...analyzed samples from people living in a village 5 kilometers from the research site and 25 kilometers from the tourism station. People in the village had no known contact with the chimps. The team co...

Volcanic eruptions, ancient global warming linked

...million years ago brought up some 10 million cubic kilometers of magma from below the Earth’s surface. These lav...ng a layered sequence of lava flows as deep as six kilometers in some places. Duncan said the eruptions are similar in scale with the well-known Deccan Flood Basa...

End of deforestation in view? Experts advance new way to size up global forest resources

...ienced the greatest losses of both forested square kilometers and cubic meters of growing stock; China and the USA achieved the greatest gains. "The Forest Identity separates nations into classes of expanding and shrinking forest that clarify the causes of changing forest expanse, timber, biomass, and carbo...

Shrinking ponds signal warmer, dryer Alaska

...ior Alaska, which spans more than 5 million square kilometers bounded on the north by the Brooks Range and on the south by the Alaska Range. To contrast the semi-arid, subarctic sites of discontinuous permafrost in Interior Alaska, the authors also selected a study area in the Arctic Coastal Plain where the tem...

Bacteria that use radiated water as food

...ining community of bacteria that live in rocks 2.8 kilometers below Earth's surface. Think that's weird? The bacteria rely on radioactive uranium to convert water molecules to useable energy. The discovery is a confirmed expansion of Earth's biosphere, the three-dimensional shell that encompasses all planetar...

Study finds the air rich with bacteria

...vation and topography, and they are only about 100 kilometers apart. After taking into account these similarities, they determined that the two cities shared a similar microbial composition. "This gives us hope that we can eventually develop a regional airborne microbial census, perhaps even a nationwide or...

NASA study: Alaskan fires affected Houston air quality in 2004

...increased between 50-100 percent in the first five kilometers over Houston," Morris said. Meteorological conditions, the smoke from the distant forest fires, and the typical urban pollution generated in the Houston area provided a potent mix for increasing local ozone concentrations, he said. Morris said it's...

'Fruit fly dating game' provides clues to our reproductive prowess

...may have hit in India, where a crater of about 500 kilometers in diameter is estimated and named Shiva by paleontologist Sankar Chatterjee from the Museum of Texas Tech University in Lubbock. The evidence for it, however, is not very compelling at this time." ...

Far more than a meteor killed dinos

...may have hit in India, where a crater of about 500 kilometers in diameter is estimated and named Shiva by paleontologist Sankar Chatterjee from the Museum of Texas Tech University in Lubbock. The evidence for it, however, is not very compelling at this time." ...

Tamed 11,400 years ago, figs were likely first domesticated crop

...elets were found at a second site located some 1.5 kilometers west of Gilgal. The scientists compared the ancient figs to modern wild and domesticated variants and determined that they were a mutant selectively propagated by humans. In this variety of fig, known as parthenocarpic, the fruit develops without in...

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

...breeding. The fungus has been found as close as 40 kilometers (25 miles) away on the other side of the Sierra Nevada mountains, and scientists will study the frogs to learn how they have avoided it. "It's a race against time to prevent chytridiomycosis from wiping out amphibian populations, but now we have dis...

Species unique to tidal marshes face threats

Tidal marshes cover only about 45,000 square kilometers worldwide--about the area of Denmark. In comparison with other habitats, tidal marshes support few nonaquatic vertebrate species, but their unique characteristics have led to the evolution of species and subspecies that are endemic (found nowhere els...

Tiny airborne particles are a major cause of climate change

...ized particles affect weather systems thousands of kilometers away from their sources. There is no doubt that aerosols do play a role, but the skeptics believe it is negligible compared to meteorological key players such as temperature, pressure, the amount of water vapor in the air, and wind strength. What K...

Brazil creates buffer zone around coral reefs off Atlantic coast

...esources (IBAMA), encompasses nearly 95,000 square kilometers ?an area larger than Portugal ?and protects the entire Abrolhos region off Brazil's central coast, including several types of coastal and marine ecosystems with unique and endangered species, such as the humpback whales. Under Brazilian law, buffer ...

Viagra improves high altitude exercise performance up to 45% for some

...collectively lowered the time it took to cover six kilometers by 15% compared to placebo trials at altitude. The cyclists also significantly improved stroke volume (the volume of blood moved out of one ventricle of the heart per beat) and cardiac output (stroke volume times heart rate) compared to the placebo t...

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