Tag: "kilometers" at biology news

Managing For Deer, Moose, Elk, Wolves -- And People

...: The End of Natural Regulation? Foundabout forty kilometers (about 25 miles) off the shores of Lake Superior, thisisland's ecosystem provides a real-world microcosm, which Rolf Peterson fromMichigan Technological University explores as a test case for some of NPS'wildlife management policies. Peterson examine...

INDOEX Researchers Document The Impact Of Pollutants On Climate Processes Over The Tropical Indian Ocean

...erderived from sources at least a thousand or more kilometers away. The scientistssuggest that the pollution events observed in INDOEX may be symptomatic oflarge-scale pollution transport that may be occurring in other regions of theearth. In contrast to the situation over the northern Indian ocean, the lowerat...

Massive pollution documented over Indian Ocean

...espread pollutioncovering about 100 million square kilometers of the tropical Indian Ocean --roughly the same area as the continental United States. This finding byscientists participating in the Indian Ocean Experiment (INDOEX) raises seriousquestions about what impact the extensive pollution is having on cli...

Heat damage to "photosynthesis engine" in symbiotic algae may be among major causes of coral bleaching

...ristindustry. They cover around two million square kilometers and support some2500 species of coral and more than 5000 species of fish. But coralbleaching has been worrying researchers since the mid-1980s, and scientistshave known that one reason is the reefs' loss of the corals' symbioticalgae and their photos...

A 'Juliet' is found for the rare lemur Romeo

...ys of walking through the forestsof Mahatsinjo, 10 kilometers southeast Tsinjoarivo, Madagascar without seeingan... in transport kennelsby the local villagers the 10 kilometers from the forest to the expedition'svehicle, then driven to Ivoloina, a park managed by the Primate C...

New books view storms, the stratosphere, and more

...in it. The story begins with explorersascending 11 kilometers (almost 7 miles) by balloon in 1901 and moves onto a 1908 expedition to Lake Victoria in Africa that launched small,unmanned balloons and tracked them with a theodolite (surveyor'stelescope). That expedition discovered then-inexplicable west winds in...

Feeding the world by cleaning the air: study ties heavy regional haze to reductions in China's crop production

... much as one-third. Covering a million square kilometers or more, the haze scatters and absorbs solar radiation, reducing the amount of sunlight reaching key rice and winter wheat crops. That decreases plant growth and food production. "For crops that are irrigated and fertilized, there is of...

Meet Conan the Bacterium

...d places as human kidney stones and in limestone 4 kilometers under the surface of the Earth. A common link? "We have a new door opening on the possibilities of lifeforms," Richmond said, "not just new species but whole new life forms that could connect to the origins of life on Earth and could be a common...

Life in the inferno: researchers identify factors that determine where microorganisms can survive in the hellish world deep underground

...round Even Dante would blanch at the conditions kilometers below the earth's surface. Temperatures climb past... extremophiles should die off between five and six kilometers below the surface of dry land. Near geothermal hotspots, subsurface temperatures rise much more r...

For a fish, there's no place like home, say major studies, offering key information for fisheries management

..., larvae would have been swept tens or hundreds of kilometers downstream," he said. The UC Santa Barbara study, initiated by first author Steve Swearer, came out of his questioning of the prevailing view that individual larval fish settling to reefs were most likely spawned elsewhere. "This was my approach ...

INEEL microbiologist joins Japanese on expedition to tap marine-methane deposits

...r. The crew drilled into a marine shelf region 60 kilometers off Japan's Omae Zaki peninsula over the Nankai Trough through 950 meters of water. The area is known to contain large amounts of gas hydrate -- methane gas molecules trapped in lattices of ice -- and may also contain extractable natural gas in form...

Vanderbilt archaeological team unearths buried Maya royal palace

... Cancuén kings had an area of about two square kilometers around the palace paved with stone. This kept the farmers from using the area to grow crops. Over time, jungle trees pushed through the stones and established an island of dense rainforest, complete with trees 16 feet in diameter and troops of howler...

New rare dinosaur tracksite found in northern Wyoming

... dinosaurs. Estimates of dinosaur speeds up to 9.2 kilometers per hour have been calculated. Interestingly, the researchers believe that algal and bacterial mats that once covered the tidal flats inhabited by these animals may have helped in preserving their tracks over millions of years. Such microbial mats a...

December Geology and GSA Today highlights

...presents a "jet" of hot mantle rising thousands of kilometers from near the core-mantle boundary. In contrast, the new teleseismic data from Yellowstone, combined with geologic data, can only be explained if there is appreciable upper mantle convection beneath Yellowstone. A plume may still be involved, but the...

Huge new hydrothermal vent system found on seafloor

...on one-million-year-old ocean crust formed tens of kilometers beneath the seafloor, and because of their incredible size. Dense macrofaunal communities such as clams, shrimps, mussels, and tube worms, which typify most other mid-ocean ridge hydrothermal environments, appear to be absent in this field. ...

Study illustrates diversification, speciation in biological "islands"

...istence of an island area threshold of 3000 square kilometers (roughly 1,800 square miles), below which speciation does not occur. It is only on the four largest Caribbean islands that there is evidence of speciation. This finding, according to Losos, has never been convincingly demonstrated until now, and, a...

Stowaways from space provide link between impact, biggest extinction in Earth history

... or comet, estimated to be anywhere from six to 12 kilometers wide, would have released unimaginable fury. "The ...e world has ever seen: More than 1.6 million cubic kilometers of lava, enough to cover the entire planet with 10 feet of lava had it spread evenly around the glob...

"Microbes deep within South African gold mines" subject of NSF lecture

...ough fissures in the earth's crust more than three kilometers deep. At the bottom of the mines, atmospheric pressure is double that of the surface, and temperatures reach some 120 degrees Fahrenheit. Scientists have identified microbial communities in various crustal environments down to 2,800 meters below the...

Researchers pinpoint how tubeworm babies are dispersed to colonize new vent sites

...that baby tubeworms rarely travel farther than 100 kilometers (62 miles). While this distance may seem pretty su...ere is volcanic activity, a distance of 100 to 200 kilometers may separate areas of active venting," he notes. "Thus, the tubeworm larvae's dispersal range tells ...

New technique illuminates events obscured in the geologic record

...alities he had collected over an area of 70 square kilometers on Seymour Island, adjacent to the northeastern tip of the Antarctic Peninsula. Using conventional charts, Zinsmeister points to a fossil find representing a group of cephalopods a class of mollusks. Because these creatures are found along a singl...

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