| Main Title |
Experimental acidification of a stream tributary to Hubbard Brook / |
| Author |
Hall, Ronald J. ;
Likens, G. E.
|
| Other Authors |
|
| CORP Author |
Cornell Univ., Ithaca, NY.;Environmental Research Lab.-Duluth, MN. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Research Laboratory, |
| Year Published |
1986 |
| Report Number |
EPA/600-M-85-011; PB85222792 |
| Stock Number |
PB85-222792 |
| OCLC Number |
16103377 |
| Subjects |
Acidification--Environmental aspects--New Hampshire
|
| Additional Subjects |
Water pollution ;
Acidification ;
Streams ;
Air water interactions ;
Experimental design ;
Air pollution ;
Biomass ;
Aluminum organic compounds ;
Hydrolysis ;
Oxidation ;
Insecticides ;
Fresh water ;
Surface tension ;
Complex compounds ;
Air pollution ;
Forests ;
Hubbard Brook ;
Acid rain ;
Ecosystems ;
Water pollution effects(Animals) ;
Acid mine drainage
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
EPA/600/M-85/011 |
|
Region 1 Library/Boston,MA |
05/25/2016 |
| EJBD |
EPA 600-M-85-011 |
In Binder |
Headquarters Library/Washington,DC |
07/19/2017 |
| ELBD ARCHIVE |
EPA 600-M-85-011 |
In Binder Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD |
EPA 600-M-85-011 |
|
AWBERC Library/Cincinnati,OH |
04/10/1998 |
| ELDD |
EPA/600/M-85/011 |
|
CCTE/GLTED Library/Duluth,MN |
04/17/2013 |
| NTIS |
PB85-222792 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6 pages : 1 illustration, maps ; 28 cm |
| Abstract |
Long (5 mo.) and short-term (1 h to 2 days) effects of acidic pH have been measured in a poorly buffered mountain stream within the Hubbard Brook Experimental Forest, New Hampshire. Over a 5-month period aluminum, calcium, magnesium, and potassium were mobilized into the stream water during experimental acidification, and nitrogen was lost via invertebrates and organic matter. Periphyton biomass increased at low pH and fungal densities increased. Emergence of adult mayflies, stoneflies and true flies decreased, whereas immature invertebrates in the drift increased. Short-term pulses of acid also changed the stream ecosystem as indicated by significant net fluxes of organic carbon, nitrogen, and phosphorus in biologically bound forms. Aluminum chloride was added to the stream to simulate increased aluminum concentrations during snowmelt. A significant decrease in pH and dissolved organic carbon (DOC) occurred, as well as an increase in foam accumulation at the stream surface. Foam production is thought to be due to decreased surface tension of the water. A 20% reduction of surface tension of stream water was measured in the laboratory. The cause of the reduction is postulated to be the formation of organo-aluminum complexes in the stream. Increases in aluminum concentration were accompanied by changes in both terrestrial and aquatic drift behavior. Six citations are given for complete publications. |
| Notes |
Caption title. At head of title: Environmental research brief. "May 1985." Includes bibliographical references (5-6). "EPA/600-M-85-011." |
| Place Published |
Duluth, MN |
| Supplementary Notes |
See also PB84-124254. |
| Corporate Au Added Ent |
Environmental Research Laboratory (Duluth, Minn.) |
| PUB Date Free Form |
1986 |
| Series Title Traced |
Environmental research brief |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20160419144216 |
| Language |
eng |
| SUDOCS Number |
EP 1.96:600/M-85/011 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01371cam 2200373Ia 45020 |
