Organic matter
hideOrganic matter (or organic material) is matter that has come from a once-living organism; is capable of decay, or the product of decay; or is composed of organic compounds. The definition of organic matter varies upon the subject it is being used for.
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News tagged with organic matter
Additive copper-zinc interaction affects toxic response in soybean
Nov 10, 2009 |
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Agricultural soils accumulate trace metals, particularly copper and zinc, as a result of their presence in wastes (sewage biosolids and manures) and fungicides that are applied over long periods of time. Regulations and guidelines ...
Climate variability impacts the deep sea
Space & Earth / Earth Sciences
Nov 02, 2009 |
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Deep-sea ecosystems occupying 60% of the Earth's surface could be vulnerable to the effects of global warming warn scientists writing in the Proceedings of the National Academy of Sciences.
Mystery Solved: Marine Microbe Is Source of Rare Nutrient
Space & Earth / Earth Sciences
Sep 29, 2009 |
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(PhysOrg.com) -- A new study of microscopic marine microbes, called phytoplankton, by researchers at Woods Hole Oceanographic Institution (WHOI) and the University of South Carolina has solved a ten-year-old ...
Help students think like soil scientists
Sep 28, 2009 |
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Emphasizing cross-disciplinary concepts in teaching soil science courses, such as mass-volume relationships, can help undergraduates learn real-world, problem-solving skills that are crucial to their success in soil science ...
Fertilizers may not help poorest African farmers
Sep 24, 2009 |
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(PhysOrg.com) -- Researchers have linked poverty in sub-Saharan Africa with poor soil health, but two new Cornell studies find that the recommended practice of applying more fertilizer may not help the poorest ...
Catastrophic Darkness: How Life Survives an Asteroid Impact
Space & Earth / Space Exploration
Sep 10, 2009 |
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A dinosaur-killing asteroid may have wiped out much of life on Earth 65 million years ago, but now scientists have discovered how smaller organisms might have survived in the darkness following such a catastrophic ...
Perennial vegetation, an indicator of desertification in Spain
Sep 04, 2009 |
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A team of scientists has analyzed 29 esparto fields from Guadalajara to Murcia and has concluded that perennial vegetation cover is an efficient early warning system against desertification in these ecosystems. ...
How Mercury Becomes Toxic In The Environment
Aug 18, 2009 |
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(PhysOrg.com) -- Naturally occurring organic matter in water and sediment appears to play a key role in helping microbes convert tiny particles of mercury in the environment into a form that is dangerous to ...
New study expands the list of hazardous chemicals in smokeless tobacco
Aug 16, 2009 |
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Attention all smokeless tobacco users! It's time to banish the comforting notion that snuff and chewing tobacco are safe because they don't burn and produce inhalable smoke like cigarettes. A study that looked ...
Mummified dinosaur skin yields up new secrets
Other Sciences / Archaeology & Fossils
Jul 01, 2009 |
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(PhysOrg.com) -- Scientists from The University of Manchester have identified preserved organic molecules in the skin of a dinosaur that died around 66-million years ago.
Little-known marine decomposers attract the attention of genome sequencers
Jun 29, 2009 |
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The Department of Energy's Joint Genome Institute (JGI) announced today that they will sequence the genomes of four species of labyrinthulomycetes. These little-known marine species were selected for sequencing ...
Subseafloor sediment in South Pacific Gyre one of the least inhabited places on Earth
Space & Earth / Earth Sciences
Jun 22, 2009 |
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(PhysOrg.com) -- An international oceanographic research expedition to the middle of the South Pacific Gyre - a site that is as far from continents as it is possible to go on Earth's surface - found so few organisms beneath ...
Ethanol production could jeopardize soil productivity
Jun 02, 2009 |
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There is growing interest in using crop residues as the feedstock of choice for the production of cellulosic-based ethanol because of the more favorable energy output relative to grain-based ethanol. This would also help ...
Biologists: Greening Arctic not likely to offset permafrost carbon release
May 27, 2009 |
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As the frozen soil in the Arctic thaws, bacteria will break down organic matter, releasing long-stored carbon into the warming atmosphere.
Pavement sealcoat a source of toxins in stormwater runoff
Apr 08, 2009 |
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Driveways and parking lots may look better with a layer of sealcoat applied to the pavement, but the water running off the surface into nearby streams will be carrying more than just oxygen and hydrogen molecules. ...
