Quantcast

Latest Nitrogen cycle Stories

Oceans Of The Past Give Clues To The Future
2013-06-15 05:39:41

April Flowers for redOrbit.com - Your Universe Online The oceans of the past were quite different than the ones we see today. Ocean temperatures are increasing due to global warming, and these increases are harming marine food webs. Coastal dead zones are also being created by the run-off from fertilizers. An international team of researchers, led by McGill University, has completed the first global study of changes that occurred during the nitrogen cycle at the end of the last ice age....

2013-04-22 09:59:09

A new global-scale modeling study that takes into account nitrogen — a key nutrient for plants — estimates that carbon emissions from human activities on land were 40 percent higher in the 1990s than in studies that did not account for nitrogen. Researchers at the University of Illinois at Urbana-Champaign and the University of Bristol Cabot Institute published their findings in the journal Global Change Biology. The findings will be a part of the upcoming Fifth Assessment...

Atmospheric Nitrogen Levels Have Remained Stable Over Past 500 Years Despite Widespread Emissions
2013-03-21 16:16:59

Brett Smith for redOrbit.com - Your Universe Online Despite widespread use of fertilizers and nitrogen emissions by industrial processes, the amount of atmospheric nitrogen has remained consistent over the past 500 years, according to a new study in Nature. "People have been really interested in nitrogen in current times because it's a major pollutant," said study co-author Kendra McLauchlan, an assistant professor of geography at Kansas State University. "Humans are producing a lot...

It's All About The Dirt
2012-06-17 03:00:40

[ Watch the Video ] A new study by researchers at BYU, Duke and the USDA finds that soil plays an important role in controlling the planet´s atmospheric future. The researchers set out to find how intact ecosystems are responding to increased levels of carbon dioxide in the atmosphere. The earth´s current atmospheric carbon dioxide is 390 parts per million, up from 260 parts per million at the start of the industrial revolution, and will likely rise to more than 500 parts per...

Image 1 - Is Fertilizer To Blame For Global Warming?
2012-04-04 07:02:15

Chemists from the University of California, Berkeley have discovered evidence of a link between increased fertilizer use and a rise in atmospheric nitrous oxide, a major greenhouse gas. Climate scientists have long assumed the cause of rising nitrous oxide levels in the atmosphere was due in part to nitrogen-based fertilizers. Such fertilizers are used to stimulate microbes in the ground to convert nitrogen to nitrous oxide at a faster rate. Published in the April issue of the journal...

2012-03-22 22:54:49

A new paper by researchers from the University of Georgia and Princeton University sheds light on the critical part played by a little-studied element, molybdenum, in the nutrient cycles of tropical forests. Understanding the role of molybdenum may help scientists more accurately predict how tropical forests will respond to climate change. The findings were published March 21 in the journal PLoS ONE. Nutrient cycles track the movement of essential nutrients as they loop through the...

2012-01-18 15:01:36

Highlights new research, and offers solutions for a nitrogen-soaked world The nitrogen cycle has been profoundly altered by human activities, and that in turn is affecting human health, air and water quality, and biodiversity in the U.S., according to a multi-disciplinary team of scientists writing in the 15th publication of the Ecological Society of America´s Issues in Ecology. In “Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions,” lead author Eric...

2012-01-17 10:15:41

Interdisciplinary panel reviews US nitrogen pollution trends, risks, and mitigation strategies Nitrogen is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion and a fertilizer that feeds billions, a benefit and a hazard, depending on form, location, and quantity. Agriculture, industry and transportation have spread nitrogen liberally around the planet, say sixteen scientists in the latest edition of ESA's Issues in Ecology series, "Excess Nitrogen in the U.S....

Image 1 - Nitrogen From Humans Pollutes Remote Lakes
2011-12-16 09:06:55

Nitrogen derived from human activities has polluted lakes throughout the Northern Hemisphere for more than a century and the fingerprint of these changes is evident even in remote lakes located thousands of miles from the nearest city, industrial area or farm. The findings, published in the journal Science Dec. 16, are based on historical changes in the chemical composition of bottom deposits in 36 lakes using an approach similar to aquatic archeology. More than three quarters of the...

2011-10-14 09:15:53

The tiny phytoplankton Emiliania huxleyi, invisible to the naked eye, plays an outsized role in drawing carbon from the atmosphere and sequestering it deep in the seas. But this role may change as ocean water becomes warmer and more acidic, according to a San Francisco State University research team. In a study published this week in the journal Global Change Biology, SF State Assistant Professor of Biology Jonathon Stillman and colleagues show how climate-driven changes in nitrogen...


Word of the Day
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
Related