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Tag: "soils" at biology news

Soils offer new hope as carbon sink

The huge potential of agricultural soils to reduce greenhouse gases and increase production...hailed as a saviour of Australia's carbon-depleted soils and the environment - have doubled and, in one case, tripled crop growth when applied at the rate of...

A new plant-bacterial symbiotic mechanism promising for crop applications

...n contribute to vegetation regeneration schemes on soils depleted in nitrogen owing to overexploitation, er...p achieve ecological restoration, by enriching the soils in nitrogen. However, the symbiotic processes studied predominantly concern the leguminous plants of...

Researchers demonstrate way to control tree height

...t is needed, such as in bioremediation of polluted soils or in very windy, limited soil moisture situations. From an environmental viewpoint, the researchers said, dwarfed trees such as this are unlikely to be any kind of threat to spread, because they would compete very poorly with normal or wild trees...

Alien plants attack using 'resource conservation' as weapon, researchers say

...awaii-a forested area with limited light, volcanic soils with low nutrients and a desert. They compared 19 invaders with 19 closely related indigenous plants-for example, an invasive raspberry versus a native raspberry. Using an electronic device that clamped onto the leaves of the plants, the scientists c...

Scientists: As rainfall changes, tropical plants may acclimate

...ecause they share the same species, elevations and soils but have vastly different rainfall. The wettest ra...lant species at each site. They learned that drier soils contained more nitrogen in the form of nitrate, while wetter soils contained more nitrogen in the fo...

Researchers develop way to calculate speed of bacterial sex

...ch things as transport of cells in porous media of soils and aquifers," explained Massoudieh. "It also can be used for ‘extrapolative?modeling to predict rates of gene transfer in certain cases, mainly environmental science scenarios, but also with relevance to some medical scenarios." ...

Bacteria could steady buildings against earthquakes

...ock. When a major earthquake strikes, deep, sandy soils can turn to liquid, with disastrous consequences for buildings sitting on them. Currently, civil engineers can inject chemicals into the soil to bind loose grains together. But these epoxy chemicals may have toxic effects on soil and water, said Jaso...

Microfossils unravel climate history of tropical Africa

...ory is more difficult than for the oceans, because soils on the continent do not form a continuous archive but are often eroded. The researchers developed an entirely new proxy for the annual mean air temperature on land, based on molecules from the cell membrane of soil inhabiting bacteria. They analysed ...

New UD technology removes viruses from drinking water

...ion, involved testing virus transport potential in soils collected from different regions across the United States. Jin's group found that the soils high in iron and aluminum oxides removed viruses much more efficiently than those that didn't contai...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

... that inhabit more mundane environments, including soils and seawater. At 1:30 p.m. PT Monday, Dec. 11, ...a were up to 3,000-times more abundant in European soils than their bacterial counterparts. Mexico to Iceland At the AGU meeting, Francis and former ...

New evidence of early horse domestication

.... The discovery, consisting of phosphorus-enriched soils inside what appear to be the remains of horse corr...and iron and is more likely to be preserved in the soils for millennia. As it turned out, the soil from inside the alleged corral had up to ten times the p...

Study suggests evolutionary link between diet, brain size in orangutans

...ve in the island's most favored environment, where soils are best for growing the fruits they most like to ...lives in the northeastern part of the island where soils are poorer, access to fruit is most iffy and the impact of El Niño events can be significant. Thos...

Plants' role in global warming re-examined

... our simulations, more carbon stored in plants and soils corresponds to less carbon released to the atmosphere in response to climate change, and a weaker positive feedback between carbon and climate and a weaker amplification of additional warming," the authors write. The paper concludes by saying, "Ther...

Gut reaction: Researchers define the colon's genome

...spects the human gut is at least as complex as our soils or seas. With the evidence at hand, the researchers have described greater diversity in the human gut than researchers have reported for samples of acid mine drainage. These microbes are busy, too. The new study shows that resident microbes in the c...

Gene therapy prevents the onset of diabetic symptoms in mice

...s, running factories and driving cars, has altered soils and reduced the number of sugar maple trees growin... calcium leads directly to more acidic soils. When soils become too acidic, such trees as sugar maples become stressed and have a harder time growing or prod...

Acid rain causing decline in sugar maples, say researchers

...s, running factories and driving cars, has altered soils and reduced the number of sugar maple trees growin... calcium leads directly to more acidic soils. When soils become too acidic, such trees as sugar maples become stressed and have a harder time growing or prod...

Species unique to tidal marshes face threats

...advantage because it matches the dark color of the soils often found in tidal marshes. Why endemic tidal marsh species seem to be largely restricted to North America--which has 24 of the worldwide total of 25--is not clear. Although it could reflect differing taxonomic practices in different countries, it ...

Metal homeostasis research in plants will lead to nutrient-rich food and higher yielding crops

...gineer nutrient-rich plants better able to grow in soils now considered marginal and to increase crop biomass in soils now in cultivation. Guerinot presented her findings 2 p.m. today (Wednesday, August 7) at the Annual...

Tropical forest CO2 emissions tied to nutrient increases

...ngs of key nutrients given to tropical rain forest soils caused them to release substantially more carbon d...- both of which occur naturally in the rain forest soils -- were added to forest plots in Costa Rica, they caused soil microbes to increase their CO2 emissio...

Researchers discover way to transport environmental arsenic to plant leaves in new clean-up strategy

...rs call phytoremediation--the cleaning of polluted soils through the use of plants that sequester poisons, make them less harmful, and which can then be harvested--and has the potential to be of use on millions of acres of arsenic-polluted lands worldwide. In research reported in 2002 in Nature Biotechnol...

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