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Tag: "dry" at biology news

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

...rentiate layers of sediment and link the currently dry region to its moister climates of the past. But, precisely dating the outcrops required volcanic minerals with elements that undergo radioactive decay. Brown and McDougall collected rocks containing volcanic debris, which McDougall dated to approxi...

New research indicates a 'troubled' greenhouse is brewing

...that the contrast between the rainy season and the dry season will increase dramatically," says Greg Retallack, whose study indicating that a troubled greenhouse is brewing is published in the April issue of the journal Geology. In this case, the word "troubled" refers to the stormy conditions shown to ...

South America's vast pantanal wetland may become next everglades, UNU experts warn

... lagoons, rivers, forest and forest islands. It is dry half the year and a shallow lake the rest, creatin...itional cattle farming is facilitating fire in the dry season. Without cattle to eat or step on the grass, it gets dry and more easily burns, leading to mo...

World's largest rainforest drying experiment completes first phase

...oil. The panels were removed during the five-month dry season each year. To sort out the forest responses...ects of forest behavior, researchers compared this dry plot of forest with a similar plot, from which rainfall was not excluded. These two forest plots wer...

Scientists discuss improved biopesticides for locust control in West Africa

... in recession now because they do not breed in the dry season, but when the annual spring rains begin, they are expected to return. Participants at the seminar included ministers of agriculture from other West African nations, national plant protection directors and locust control personnel, military of...

No relief for Pacific Northwest drought

...or relief this spring or summer from the unusually dry weather that has recently hit the Pacific Northwes...g," Neilson said. "It is going to become extremely dry in many parts of the Pacific Northwest and northern Rocky Mountain states, and the fire risk is goin...

Growth in biomass could put US on road to energy independence

...rt outlines a national strategy in which 1 billion dry tons of biomass ?any organic matter that is availa...s, the study found potential exceeding 1.3 billion dry tons per year. That amount is enough to produce biofuels to meet more than one-third of the current ...

Human Cells Filmed Instantly Messaging for First Time

...rt outlines a national strategy in which 1 billion dry tons of biomass ?any organic matter that is availa...s, the study found potential exceeding 1.3 billion dry tons per year. That amount is enough to produce biofuels to meet more than one-third of the current ...

Shift of weather patterns necessitates rethinking of reforestation methods

...Another big factor is the subjection of new to hot dry conditions before they've had a chance to acclimate and recover from the stress of planting. Rethinking planting time could remedy the loss due to droughty conditions, Taylor said. Traditional methods prescribe planting in the winter, but conditions...

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

... gather day and night to drink or bathe during the dry Namibian summer. To avoid disturbing this remarkable parade of wildlife, and to prevent one of these large creatures from invading tents or destroying delicate electronic gear, the research team erected a 7-foot-tall cloth barrier around the perimet...

Stealth Worms May Improve Insect Pest Control

... the cycle again. These juveniles also can survive dry conditions in soils for long periods of time before they infect more insects. This naturally-occurring relationship between the nematodes and their mutualistic bacteria has existed for millennia. EPNs are found in terrestrial environments, including...

Making Sure Sacred Sheep Don't Become Extinct

...Navajo-Churro and found that the sheep did well in dry areas; they were able to produce more lambs than other breeds of sheep. Hand­spinners like the wool from Churro sheep, and they are willing to pay premium prices for it. Navajo use the wool to make blankets. But for industrial wool manufacturers, it ...

Nanobacteria in clouds could spread disease, scientists claim

...h humidity region of the clouds and the relatively dry inter-cloud regions, leading to oscillations between a dormant state and one of activation," explained Professor Wickramasinghe. "Remnants of a sticky protein (slime) coating nanobacteria makes them act as extremely efficient cloud condensation nucle...

Tsunami-damaged coral reefs should be left to recover naturally, say scientists

...g lots of earth around, they should do this in the dry season rather than the wet season to avoid sediment being washed into the sea." USEFUL WEB LINKS: The Coral Reef Targeted Research & Capacity Building for Management Project. http://www.gefcoral.org Dr Alasdair Edwards ?home page: http://www.ncl...

Fungus-farming termites descend from an African rain forest Eve

...rmites use chewed plant material, such as wood and dry grass, to feed the fungus and allow it to flourish, while the fungus converts otherwise indigestible plant material into nutrients the termites can utilize. Earlier work had shown that in the evolutionary past, a single, unreversed, transition to agr...

Hepatitis C responds best to combo of ribavirin and interferon, study concludes

...umber of white blood cells; skin disorders such as dry skin and rash; stomach complaints such as lack of appetite, nausea and indigestion; infections; insomnia; difficulty breathing, cough and fatigue. "The beneficial effect of adding ribavirin to interferon is not fully understood," the authors conclud...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...ill-health (fever, coughing, sore eyes) during the dry season," says the report. "Dust emanating from (the Gobi desert) and the Sahara has also been implicated in respiratory problems as far away as North America and has affected coral reefs in the Caribbean." The report shows infant mortality in drylan...

Woods Hole Research Center plans controlled burn in Amazon rainforest

...n through the understory of frontier forests every dry season. These areas are already slated for destruc... leaving holes in the canopy; longer, more intense dry seasons provoke leaf thinning; and both of these changes allow the litter to become dry enough to su...

Hybrid grass may prove to be valuable fuel source

...aid. Full-grown plants produce 10-30 tons per acre dry weight each year. Miscanthus yields in lowland are...ilar to the Midwest, are at least 25 tons per acre dry weight, wrote Heaton and colleagues in a paper published in 2004 in the journal Mitigation and Adapt...

MERIS monitoring tracks planetary photosynthesis levels

... for Spain and Portugal, due to unusually cold and dry conditions at the beginning of the year, leading to plant stress. In the past the effects of the 2003 European drought were detected in a similar way, but in the absence of any long-term continental-scale perspective on vegetation growth. Forget fo...

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