Tag: "steep" at biology news

Study confirms link between head and neck cancer and common Asian nut

...s tripled since the early 1980s, coinciding with a steep rise since the early 1970s and predominantly among men, in the practice of chewing betel quid. ...

Biodiversity: measuring up to the loss

...s birds between 1988 and 2004," with "particularly steep declines" in recent years for Asian birds--resulting from massive deforestation in Indonesia--and for seabirds such as albatrosses and petrels, which drown on the hooks of commercial long-line fisheries. Butchart et al. focus on evaluating trends in...

Diamonds are a urologist's best friend

...aube explains. Several species of bacteria cause a steep increase in the urine pH value by their metabolism. The result is that salts and other substances which are normally found in suspension in the urine are precipitated and form a deposit. After only one week some catheters look like the inside of a co...

Researchers probe marine mysteries off the Alaskan coast

...nts on the Alaskan margin, including deep canyons, steep scarps (walls), sandy slopes and an unusual seamount. While exploring the area, the scientists also discovered previously unknown cold methane seeps and biological communities that exist in such environments. The seeps, found 3,300 meters below the w...

Tracking orangutans from the sky

..., especially when faced with the hip-deep muck and steep slopes of the rainforest floor. Instead, Ancrenaz and colleagues have developed a survey method by which estimates of orangutan numbers can be made from helicopters. By comparing ground survey data, collected over two years, with aerial counts garner...

ESA's Huygens begins its final journey into the unknown

...10:06 CET) on 14 January, entering at a relatively steep angle of 65 and a velocity of about 6 km/s. The target is over the southern hemisphere, on the day side. Protected by an ablative thermal shield, the probe will decelerate to 400 m/s within 3 minutes before it deploys a 2.6 m pilot chute at about 160...

Self-organization and vegetation collapse in salt marsh ecosystems

... the adjacent intertidal flat becomes increasingly steep and vulnerable to wave attack. Disturbance due to for instance a storm, may induce a cascade of vegetation collapse and severe erosion on the cliff edge, leading to salt-marsh destruction. Seawards of this cliff new pioneer vegetation can develop, le...

Falling ants glide back to trunk to avoid dangers of forest floor

...d (12 feet per second), and approach the tree at a steep angle. This means they frequently bounce off the trunk, though, as Yanoviak initially noted, they just make a 180 degree turn and try again usually with success. What allows the ants to change direction so quickly is still a mystery. They have long,...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...sters such as murres and kittiwakes, which nest on steep cliff faces, were less affected by the foxes, he said. "Wherever the puffins and gulls have come back after the removal of the foxes, the vegetation has started to become lusher again," Byrd said. "The terrestrial ecosystem was probably modified in m...

Searching the depths of the straits of Florida for disease cures

...tically along its length. Prior to that cruise the steep rocky walls had only been seen from submersibles b...Harbor Branch scientists are attracted most to its steep topography between about 300 and 3,000 feet, which suggests that they will find the rocky walls that...

21-22 April AAAS forum to discuss Pentagon R&D spending, other policy issues

...weapons systems. The proposed budget would impose steep cuts on Pentagon science and technology spending, money that traditionally has helped nurture such disciplines as computer science, mathematics and oceanography. For all agencies, the total federal R&D portfolio of $132.3 billion would grow just 0.1 ...

Plunge into warmer waters this summer with ESA's Mediterranean heat map

...the Po River into the Adriatic, which evolves as a steep coastal current along the Italian coastline." Medspiration utilises data from the Advanced Along Track Scanning Radiometer (AATSR) on Envisat, the Spinning Enhanced Visible and Infra-Red Imager (SEVIRI) on Meteosat-8, two Advanced Very High Resoluti...

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

...t Seas and the Canada Basin, a vast bowl walled by steep ridges and lidded with ice. "The Canada Basin is one of the world's most isolated ocean areas," says Dr. Rolf Gradinger, head of the Arctic CoML, based at the University of Alaska, Fairbanks (UAF), and chief scientist on the voyage. "Several cre...

Displaced songbirds navigate in the high Arctic

...high Arctic, where the geomagnetic field lines are steep and the midnight sun makes star navigation impossible for much of the summer. White-crowned sparrows are nocturnally migrating birds that breed in northern Canada and perform long migrations covering a few thousand kilometers to winter in the southe...

Picky female frogs drive evolution of new species in less than 8,000 years

...son is complex topography with lots of valleys and steep slopes, where you have species meeting in lots of little pockets, so that you get all these independent evolutionary experiments going on. Perhaps that helps explain why places like the Andes are so extraordinarily diverse." Moritz; lead author Conra...

Ownership of Southern forestland dramatically changing

...er production across the South. The report shows a steep decline over the past 10 years in international demand for U.S timber products. Industry consolidations, landownership changes, and depreciation and closure of older processing facilities are all contributors. "In spite of these changes, Southern fo...

Life leaves subtle signature in the lay of the land

...been eliminated, we would still see rounded hills, steep bedrock mountains, meandering rivers, etc., but their relative frequency would be different." When a NASA scientist acknowledged to Dietrich a few years ago that he saw nothing in the Martian landscape that didn't have a parallel on Earth, Dietrich b...

Through a satellite darkly: Night views of European seas improve ESA ocean heat map

...tion can heat the topmost water layers, setting up steep temperature gradients which can mislead satellite instruments. Such gradients dissipate during the night, minimising at dawn which is when heat-measuring satellite sensors such as radiometers get closest to taking the temperature of deeper water laye...

Finally, JAP study shows headdown bedrest precisely mimics human physiology in spaceflight

...were similar between BR and SF." Parallel swift, steep declines in SF and BR indicate validity of mutual applications Specifically, the paper reported: "Exposure to and recovery from SF and BR induced similar cardiorespiratory responses to exercise (either) on a semi-recumbent (SF) or supine (BR) cycle ...

Two new species discovered

...he rain forest protects watersheds on the island's steep slopes, helping to control soil erosion and preven... Tabaranza conducted in 1994 and 1995, high on the steep slopes of one of the island's volcanoes. Local people had not previously known of the mouse, though...

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(Date:7/30/2014)... ranges and a changing climate threaten some of ... and so conservationists establish seed collections to save ... hopes of preserving some genetic diversity., For decades, ... models that offer a one-size-fits-all approach for how ... 50 seed samples regardless of species, pollination mode, ...
(Date:7/30/2014)... CHAMPAIGN, Ill. Scientists are searching through a massive ... more than 50 years ago, and the effort is ... world they inhabited. , When the collection is fully ... will be the largest unbiased Dominican amber collection in ... most striking discovery thus far is that of a ...
(Date:7/30/2014)... subject of major interest in neuroscience. A large ... distinct stages of Wallerian degeneration: transcription factor activation, ... gene expression responses in the distal segment of ... known, differences in gene expression between the proximal ... and co-workers from Nantong University, China used microarrays ...
Breaking Biology News(10 mins):Saving seeds the right way can save the world's plants 2Decades-old amber collection offers new views of a lost world 2
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