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Tag: "evaporation" at biology news

Scientists find fossil proof of Egypt's ancient climate

...was a stable standing body for many years. "Strong evaporation of the lake, enough to shrink it substantially in volume and make it more saline would have been expected to result in large excursions in d18O and minor element concentrations," Kieniewicz said. "However, throughout the stratigraphy, the d18O values...

NASA study finds snow melt causes large ocean plant blooms

... the sun's energy goes towards melting of snow and evaporation of wet soil. As a result the land mass heats up more in summer creating a larger temperature difference between the water of the Arabian Sea and the Indian subcontinent landmass. The temperature difference is responsible for a disparity in pressure ...

A hope for oil spill bioremediation

...are subjected to physicochemical processes such as evaporation or photochemical oxidation which produce changes in oil composition. But the most important process acting on the spilled oil is biodegradation. It is well established that most crude oils are biodegradable to a great extent, especially components as...

New markers of climate change

...ts) to find out how their photosynthesis and water evaporation have been affected by climate change over the last 50 years. Using types of epiphytes known as bromeliads, Monica Mejia-Chang from Professor Howard Griffiths' lab in Cambridge has been measuring the levels of two stable isotopes, 13C and 18O in the ...

Cattle grazing may help rather than hurt endangered species

...lamanders. Cattle grazing influences the rates of evaporation which work together with climate to determine the depth and duration of wetland flooding. Cattle have been grazing in the land for roughly 150 years and have become a naturalized part of the ecosystem. "In practical terms, this means that grazing m...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...Unless measures are taken to clean the Salton Sea, evaporation will result in the sea being too salty for fish, resulting also in the loss of fish-eating birds frequenting an area that is home also to several endangered bird species and visited by millions of waterfowl every year. Massive fish kills are a comm...

Deep-rooted plants have much greater impact on climate than experts thought

...imate this effect increases photosynthesis and the evaporation of water from plants, called transpiration, by 40 ...ple called hydraulic lift, with energy supplied by evaporation of water from leaf openings called stomata. Twenty years ago, however, some small plants were found ...

Ferns provide model for tiny motors powered by evaporation

...el energy scavenging device that uses the power of evaporation to move itself---materials that could provide a me...orms one form of energy, in this case heat via the evaporation of water, into motion. When the cells in the outer wall of the sporangium were water logged, the spo...

Shrinking ponds signal warmer, dryer Alaska

...rmafrost thawing, an increase in water loss due to evaporation from open water and transpiration from vegetation, and yet no substantial change in precipitation. The shrinking of these closed-basin ponds may be indicative of widespread lowering of the water table throughout low-lying landscapes in Interior Al...

Global 'sunscreen' has likely thinned, report NASA scientists

...nteracts the effect of warmer air temperatures, so evaporation does not change very much," said Gavin Schmidt of GISS, a co-author of the paper. "Increased aerosols probably slowed the expected change in the hydrological cycle." Whether the recent decline in global aerosols will continue is an open question. ...

How trees manage water in arid environments

...n that collects in puddles is quickly sucked up by evaporation into the dry air. Most of the rest runs off before...tains because only there does precipitation exceed evaporation enough for forest vegetation to survive. Understanding surface-atmosphere interactions is importa...

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