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Tag: "north" at biology news

Simple sea sponge helps scientists understand tissue rejection

...n Atlantic species that grows abundantly from just north of Cape Cod down to Florida. The red beard sponge (Microciona prolifera) has a cell-to-cell recognition system that, on a basic level, is similar to that of humans but much simpler. It's also a good organism for laboratory research, since its cell...

Bird samples from Mongolia confirmed as H5N1 avian flu

...h survey of wild bird populations in the south and north of the country, WCS field vets Drs. William Karesh and Martin Gilbert responded to initial reports of the most recent avian influenza outbreak in Kovsgol Province near the Russian border from the Mongolian Ministry of Food and Agriculture, which cond...

Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals

... change between spring and autumn and instead head north in both seasons. This behavior did not appear to involve the normal inclination-compass and chemical-compass mechanisms. The new findings show that bright-colored light interferes with magnetoreception such that migratory birds can no longer obtain ...

Ocean climate predicts elk population in Canadian Rockies

...e can look at specific climate statistics from the north Pacific Ocean and tell you how the elk are doing in Banff National Park. The University of Alberta doctoral student is the first researcher to show a correlation between the North Pacific Oscillation (NPO) and a mammal population. Based on many clim...

Scientists discover global pattern of big fish diversity in open oceans

...aiian Islands. The Southeast Pacific, particularly north of Easter Island; waters near Sri Lanka in the Indian Ocean; and the ocean east of the Great Barrier Reef in Australia also contain some of the best areas left. "In fact, much of the east coast of the U.S. is really a hotspot," says Myers. "And this...

Scientists map the world for nature conservation

...in large parts of Pakistan, Afghanistan, Iran, the north of China and, surprisingly, even Japan," adds Kier. Of all the different types of vegetation zone, the flooded savannas and grasslands are the least explored by botanists. Greater efforts are needed in future to discover more about the plant life the...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...cutter. News of the marine discoveries in the far north coincides with announcement of seed funds for a matching effort in the Antarctic. The 30-day "Hidden Ocean" expedition (http://www.oceanexplorer.noaa.gov), funded and coordinated by the US National Oceanic and Atmospheric Administration (NOAA, an ag...

Searching the depths of the straits of Florida for disease cures

...es a number of small, uninhabited islands 30 miles north of Cuba. Cay Sal was once notorious for its role in illegal drug smuggling, but researchers expect to discover pristine reefs there down to 3,000 feet that could lead to a new reputation for the area as the source of lifesaving drugs. Regular dispatc...

Butterfly migration could be largest known

...llars turn into adults in the spring, they migrate north in search of fresh food and breeding grounds, powered by a supply of yellow fat they have built up over the winter. Painted ladies migrate every year, but usually less conspicuously and in far fewer numbers. This year, however, exceptionally high wi...

Cousin of Asian super termite invades Florida

...ences, or UF/IFAS. "I thought it could not survive north of the tropics, and I am puzzled by its rapid spre...ed population in Riviera Beach, more than 70 miles north of Miami. The researchers say they're not sure how much farther north the tropical species can move ...

Africa to take it on chin again with climate change

...n rains, critical to life in much of Africa, shift north and south with the seasons. They normally reach the Sahel from July to September and the southern part of the continent from February into April. Low-pressure centers moving west from the Sahel during the monsoon often serve as seed for tropical stor...

Grizzlies set to invade high Arctic?

...he western Arctic archipelago 1,500 kilometres due north of Yellowknife, and 1,000 kilometres north of the Arctic Circle. "We know grizzlies go out on the sea ice to hunt seals, but no one has ever s...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...0 miles away in Etosha National Park start to move north in search of water. It could be that they are sensing underground vibrations generated by thunder." Frozen trunks O'Connell-Rodwell began studying elephants at Etosha more than a decade ago. In July 2004, she returned with husband Tim Rodwell, a St...

Low level of extinction during ice age linked to adaptability

... Raleigh, Memphis and Albuquerque or nearly as far north as Buenos Aires. Powell tackled the question of why extinction rates were so low during that great ice age by closely examining geographic patterns of evolution and extinction in brachiopods, simple shelled sea creatures that were abundant and well-f...

Unprecedented water level rise in Somalia

...continue into next week. In Jowhar, 90 kilometres north of the capital Mogadishu, three villages were affected by breaks in the river. Overnight, river levels dropped from 4.6 to 4 metres, suggesting a breach somewhere upstream. OCHA said Somali authorities and humanitarian agencies agreed that larger sca...

New research indicates a 'troubled' greenhouse is brewing

... tropical mangroves and rain forests spread as far north as England and Belgium and as far south as Tasmania and New Zealand," Retallack says. "Turtles, alligators and palm trees graced Ellesmere Island in the Canadian Arctic, which is now the treeless abode of musk oxen and polar bears." The bottom line?...

New Clues Add 40,000 Years to Age of Human Species

... of organic-rich sediments thousands of kilometers north in the Mediterranean that other researchers had already associated with specific, episodic climate changes. In addition, the sediments show that each major layer deposited very rapidly, perhaps within a few thousand years or less. In the case of th...

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