HOME >> BIOLOGY >> NEWS
US ecology dramatically altered by fertilizers and acid rain

g carbon dioxide in the atmosphere. When trees grow and mature they remove carbon dioxide from the air. The ability of trees to grow and absorb more carbon is intimately related to the availability of nitrogen.

The remote areas of Chile and Argentina provided prime areas for conducting the research. In North America the ground is tainted with large amounts of inorganic nitrogen from widespread use of nitrogen-heavy fertilizers, as well as acid rain brought on by fossil fuel burning. In the South American areas the researchers studied, there is no fertilizer use and almost no influx of fossil fuel emissions.

To reach their conclusions, the scientists spent five years preparing experiments in remote Chilean temperate forests and another five years conducting detailed analyses of water in those forests. They also conducted one-time tests in a dozen other remote areas in Chile and Argentina to prove that the preponderance of organic nitrogen they observed was not unique to the site they were studying. At the same time, they repeated their measurements in three U.S. virgin forests, two in the Smokey Mountains and one in Pennsylvania. All of the areas studied contained unlogged primary forests, in ecosystems that have developed in place for 4,000 years to over 20,000 years.

The results also suggest that in North America the impact of nitrogen pollution from acid rain and agriculture may be more dramatic in years to come than previously thought. That's because North American forests are still young, after recovering from past logging and agricultural clear-cutting. Young trees use nitrogen from the soil for growth, but as they mature, they sequester less nitrogen from the environment. When that happens, more inorganic nitrogen will be available to run off into rivers and groundwater.

Another interesting finding, said Perakis, was that the nitrogen cycle -- the way nitrogen compounds are exchanged between plants, soil, waterways and the a
'"/>

Contact: Cynthia O'Carroll
cocarrol@pop100.gsfc.nasa.gov
301-614-5563
NASA/Goddard Space Flight Center
24-Jan-2002


Page: 1 2 3

Related biology news :

1. Lecture on ecology of infectious diseases
2. Better living through urban ecology
3. Wolf reintroduction reshapes Yellowstone ecology
4. Articles on remote sensing in ecology published in BioScience
5. Purdue scientists: Genetically modified fish could damage ecology
6. Earliest evidence of humans affecting aquatic ecology in Canada, United States
7. Alien earthworms changing ecology of Northeast forests
8. IUB scientists to study the ecology of infectious disease -- inside ticks
9. Columbia offers new ecology program in Dominican Republic
10. UCSB ecology center to receive grant
11. Across the countryside: How ecology predicts the movement of parasites and disease

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/4/2020)... ... March 04, 2020 , ... ... banks and hMSC bioprocess systems, announces today a significant milestone in the regenerative ... starting materials. The patient has been treated by RoosterBio’s pharmaceutical customer with an ...
(Date:3/2/2020)... ... , ... Nominations are now being accepted for the 2020 Women in ... (SIA) and SecureIDNews and co-presented with sponsors IDEMIA , Biometric ... this year’s Women in Biometrics Awards will be honored at the 2020 SIA GovSummit, ...
(Date:2/28/2020)... ... ... Regen Suppliers is now offering the top FDA Cleared threads available on ... not only one of the only FDA Cleared options available, there are fifteen different ... popularity, as they represent an excellent nonoperative method of reducing wrinkles and helping individuals ...
Breaking Biology News(10 mins):
(Date:2/26/2020)... ... February 25, 2020 , ... Continuing its leading ... the results of its safety assessment on the biotechnologically produced 3-Fucolsyllactose (3-FL) HMO. ... milk. These complex carbohydrates are indigestible and therefore function as a prebiotic by ...
(Date:2/21/2020)... , ... February 21, 2020 , ... Join Forrest Brown, ... Region of Sequence, Inc. for an informative session on Wednesday, ... Design Flexibility: Key elements to incorporate into facility design to add manufacturing flexibility in ...
(Date:2/19/2020)... (PRWEB) , ... February 19, 2020 , ... ... process solutions for the life sciences industry, today announced the opening of a ... Nagamura, Associate Partner, Red Nucleus R&D. , Red Nucleus announced the new office ...
(Date:2/10/2020)... ... ... R3 Medical Training announced it is now registering for its next Comprehensive ... is hands on involving real patients and stem cell biologics, with every attendee receiving ... Training Course has received rave reviews from attendees, who love the hands on nature ...
Breaking Biology Technology:
Cached News: