HOME >> BIOLOGY >> NEWS
Acid rain revisited: ESA releases report on the ecological response to acid deposition

Congress will soon give careful consideration to renewal of the Clean Air Act and its amendments. In anticipation of this event, a group of scientific experts met last year to discuss their research of acid deposition, often called acid rain. The results of this meeting have been summarized and are now available in a new report from the Ecological Society of America entitled, "Acid Deposition: The Ecological Response."

The group of experts was composed of 40 of the nation's top ecological researchers. They met in March 1999 with three specific goals in mind: to evaluate the long term trends emerging from research data on ecosystem response to acid deposition; to examine whether changes have occurred in the ecological damage caused by acid deposition, and to compare those changes to observations and projections of the 1990 National Acid Precipitation Assessment Program (NAPAP) Report. During this same year, the Clean Air Act Amendments (CAAA) were passed to reduce the adverse effects of acid deposition through phased reductions of annual emissions of its precursors, sulfur dioxide (SO2) and nitrogen oxides (NOx). The scientists also wanted to ascertain whether ecosystems were experiencing any kind of recovery from previous acid deposition.

The most important conclusions drawn from the workshop regard regional differences in both deposition levels and recovery rates. In the Midwest and Northeast, the scientists agreed, emission reductions of sulfur dioxide correspond to decreases in the fluxes of sulfate in both precipitation and surface waters. But in some regions and ecosystems, these reductions may not have resulted in ecosystem recovery.

Several factors may be limiting this recovery. First, acid deposition can deplete base cations from soils, such as calcium and magnesium, that are essential for plant growth. Besides being essential for plants these elements also neutralize further acid inputs.

Second, nitrogen deposition may also be li
'"/>

Contact: Alison Gillespie
alison@esa.org
202-833-8773 ext. 21
Ecological Society of America
11-May-2000


Page: 1 2 3

Related biology news :

1. 5AM Solutions releases Microarray Enterprise Manage(TM) Software
2. Joslin Diabetes Center releases new low impact exercise video
3. The American Academy of Microbiology releases report
4. Academy Harbor Consortium releases letter on mercury to President Bush
5. The American Academy of Microbiology releases report
6. Journal announces scientific releases
7. ICSU releases GMO synthesis report
8. CAST releases report on environmental impacts of grazing systems on our nations resources
9. Twenty-years of long-term ecological research: National Science Foundation releases review report
10. NNSAs Livermore Lab partners with cities and counties to track biological, chemical releases
11. Refrigerator disposal releases ozone-depleting chemicals

Post Your Comments:
(Date:8/27/2014)... new skill is easier when it is related to ... pianist might learn a new melody more easily than ... engineers from the Center for the Neural Basis of ... and Carnegie Mellon Universityhave discovered a fundamental constraint in ... as the cover story in the Aug. 28, 2014, ...
(Date:8/27/2014)... species frequently found in forests has created a thriving ... toads, a new University of Georgia study has found. ... U.S. in the early 1900s, is one of the ... than a dozen states in the past century, particularly ... forests, it can survive in widely diverse ecosystems and ...
(Date:8/27/2014)... DURHAM, N.C. -- When we want to listen carefully ... talking. The second thing we do is stop moving ... unwanted sounds generated by our own movements. , This ... deep in the brain. Indeed, indirect evidence has long ... somehow influences the auditory cortex, which gives rise to ...
Breaking Biology News(10 mins):Pitt and Carnegie Mellon engineers discover why learning can be difficult 2Pitt and Carnegie Mellon engineers discover why learning can be difficult 3More wolf spiders feasting on American toads due to invasive grass, UGA study shows 2More wolf spiders feasting on American toads due to invasive grass, UGA study shows 3Stop and listen: Study shows how movement affects hearing 2Stop and listen: Study shows how movement affects hearing 3
(Date:8/27/2014)... 2014 Reportlinker.com announces that a ... its catalogue: Global Biodegradable Packaging ... http://www.reportlinker.com/p02316661/Global-Biodegradable-Packaging-Materials-Market-2014-2018.html About Biodegradable Packaging ... readily decomposed by the action of microorganisms. ... in terms of raw materials, production technology, ...
(Date:8/27/2014)... One of nature,s mysteries is how plants survive ... in the sun,s rays, while using this energy ... proteins in the plant,s blades quickly dissipate the ... protein quakes. Researchers at DTU Physics have now ... plants, algae and bacteria contain light-absorbing proteins which ...
(Date:8/27/2014)... , Aug. 27, 2014 Reportlinker.com ... available in its catalogue: Global Chelating ... About Chelating Agent A chelating ... covalent bonds with metal ions, thereby forming a ... some metal-ions have on chemical processes, formulations, and ...
(Date:8/27/2014)... ANGELES , Aug. 27, 2014  Lisa Kulik ... years this July 4 holiday, thanks to a groundbreaking ... Ph.D., an internationally renowned clinician-researcher at the University of ... a 55-year-old Peoria, Ariz. resident ... robs its victims of sight. On June 2, she ...
Breaking Biology Technology:Global Biodegradable Packaging Materials Market 2014-2018 2Global Biodegradable Packaging Materials Market 2014-2018 3Global Biodegradable Packaging Materials Market 2014-2018 4Global Biodegradable Packaging Materials Market 2014-2018 5Global Biodegradable Packaging Materials Market 2014-2018 6Global Biodegradable Packaging Materials Market 2014-2018 7DTU researchers film protein quake for the first time 2Global Chelating Agents Market 2014-2018 2Global Chelating Agents Market 2014-2018 3Global Chelating Agents Market 2014-2018 4USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 2USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 3USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 4USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 5
Cached News: