Tag: "south" at biology news

Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands

...ulation. We find permafrost in peatlands further south than in other boreal ecosystems due to the insulating qualities of peat. So we have argued that these ecosystems serve as a very sensitive indicator of climate change, Turetsky said. What will happen to peatlands when climate change disrupts these f...

What we can learn from the biggest extinction in the history of Earth

... five years unearthing the deep geologic record in south China. The kilometer-thick, limestone fossil beds at the Great Bank of Guizhou formed in shallow ocean waters during the late Permian and early Triassic periods. As the ocean floor sank, new, younger layers of limestone formed on top of deeper, older...

Why nectar-feeding bats need a 'power drink' to fly

...rt period, they say. Nectar-feeding bats live in south and central America and are among the smallest of all living mammals, weighing less than 10g. They feed at night and can ingest up to 150% of their body weight as nectar. ...

Measuring nectar from eucalypts

... in forest canopies over 30 metres high on the NSW south coast were accessed. Nectar in flowers bagged over...en, as extensive flowering was recorded across the south coast. The study surveyed local beekeepers with questionnaires and found that honey yields in 2005...

Humboldt squid on the move

...ulate that, during El Nio years, currents from the south help carry Humboldt squid northward to new feeding...years, Humboldt squid have expanded both north and south of their "home turf." A few have been seen as far north as Canada and the Gulf of Alaska. This expan...

New research proves single origin of humans in Africa

...only was variation highest amongst the sample from south eastern Africa but that it did decrease at the same rate as the genetic data the further the skull was away from Africa. To ensure the validity of their single origin evidence the researchers attempted to use their data to find non-African origins ...

Increase in creeping vines signals major shift in southern US forests

...ils to climb trees. The patterns observed in the south add to a growing number of studies that found similar patterns in temperate and tropical forests, said Bruce Allen, the study's lead author and a recent doctoral graduate of Ohio State University's School of Environment and Natural Resources. Colle...

Clues to future evolution of HIV come from African green monkeys

...th into grivets or northeast into grivets and then south into vervets. Wertheim said, "I was surprised that the geography could explain the virus phylogenetic tree, how well it fit. You just look and -- there it is!" The UA researchers suggest that in the border zones where two African green monkey spe...

Greenland's ancient forests shed light on stability of ice sheet

... of locations in Greenland, including Dye 3 in the south of the country. From the base of the 2km deep Dye 3 core, they were able to extract what they believe is likely to be the oldest authenticated DNA obtained to date. By analysing these DNA samples, the researchers identified a surprising variety of ...

Germany's embryo protection law is 'killing embryos rather than protecting them'

...s in 54 countries (all of Europe, all of north and south America, and parts of Asia and the Middle East), representing about half of the world and three billion people total ART activity in the whole of the world is estimated at 1.1 million cycles a year approximately 240,000 ART babies were born i...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...t was probably recolonized by wolves that survived south of the ice sheet in the continental United States, Leonard said. The ancient Alaskan wolves differed from modern wolves not only in their genes, but also in their skulls and teeth, which were robust and more adapted for forceful bites and shearing ...

International team to honor 30th anniversary of deep-sea vent discovery in Galpagos

...public event in the Galpagos Islands, located just south of the discovery site, on June 27-29. Attendees will include many of the original explorers who first discovered these bubbling hot areas surrounded by bizarre animals thriving in total darkness-without energy from the sun-at the bottom of the Pacif...

UI anthropologist, colleagues discover remains of earliest giant panda

...known ancestor of the giant panda -- that lived in south China some two million years ago. The ancestor o...ull. The new find, made about 18 months ago in a south China karst (limestone) cave by Chinese researchers and co-authors Changzhu Jin and Jinyi Liu of the...

Study helps preserve Arctic whale, Eskimo subsistence hunt

...rates north into the Beaufort Sea every summer and south into the Bering Sea for winter. Like all baleen whales, it uses specialized fibrous materials in its mouth to sift plankton from sea water. Bickham said some bowheads may live around 200 years, and the discovery of stone spearheads lodged in livin...

Satellite images show destroyed and threatened villages in Darfur

...oughout Darfur. A village called Donkey Dereis, in south Darfur, was intact when photographed at the end of 2004. An image two years later shows the near total destruction of the village, with 1,171 homes classified as "definitely destroyed." Most of the huts have disappeared, Bromley said, and homestead a...

Stray penguins probably reached northern waters by fishing boat

...of Ornithology, the researchers point out that the south lacks a particular type of predator bears that w...used to be brought to North American zoos from the south on a regular basis, but those shipments stopped in 1972 with the adoption of international regulatio...

Research finds evidence tropical cyclones have climate-control role

...e upper part of the conveyer belt travels from the south to the north, passing through the Pacific Ocean and Indian oceans and past warmer latitudes warming the water brought to North America and Europe, Huber said. In the tropical oceans, this pattern must be reversed; warm, buoyant water must be mixed ...

Fire ants are emerging nuisance for Virginians

...fire ants are still extending their range from the south to the north," said Schultz, who is also director of the Hampton Roads Agricultural Research and Extension Center in Virginia Beach. "Even though sod and nursery plants are treated and must meet strict guidelines to be transported from areas with fir...

Study focuses on only carnivore with 'fingerprints'

...pears to have begun in the 1990s. Fishers spread south out of the Adirondacks and Vermont and into the Hudson Valley. They are also spreading westward, with today's leading edge around Syracuse. Fishers were first recorded in the suburbs of Albany and Boston in the last six years....

K-State biologist hopes mosquito can break viral chain

...y bits of the southern United States, particularly south Florida. The species has made a comeback since eradication programs ended in the 1970s, and dengue fever has expanded along with it. In Kansas, Culex tarsalis and other members of the Culex group do most of the biting. They don't transmit dengue, b...

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Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2
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