| Main Title |
Temporal Changes in the Benthos along a Pollution Gradient: Discriminating the Effects of Natural Phenomena from Sewage-Industrial Wastewater Effects. |
| Author |
Ferraro, S. P. ;
Swartz, R. C. ;
Cole, F. A. ;
Shults, D. W. ;
|
| CORP Author |
Environmental Research Lab.-Narragansett, Newport, OR. |
| Publisher |
c1991 |
| Year Published |
1991 |
| Report Number |
EPA/600/J-93/084 ;ERLN-N143; |
| Stock Number |
PB93-173714 |
| Additional Subjects |
Environmental impact assessments ;
Benthos ;
Water pollution effects ;
Temporal distribution ;
Environmental monitoring ;
Sewage disposal ;
Outfall sewers ;
Waste water ;
Industrial wastes ;
Aquatic ecosystems ;
Sediment transport ;
Environmental transport ;
Reprints ;
Los Angeles County(California)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-173714 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
27p |
| Abstract |
As pollution from the Los Angeles County Sanitation Districts (LACSD) outfalls decreased between 1980 and 1983, the macrobenthic community partially recovered and surficial (0-2 cm deep) sediment contamination and toxicity decreased at 60 m water depth along a pollution gradient from the outfalls. Pollution from the LACSD outfalls continued to decrease but macrobenthic conditions and surficial sediment quality deteriorated 1 km, was unchanged 3 km, and improved 5-15 km from the LACSD outfalls between 1983 and 1986. The net effect of natural phenomena is indicated when ecosystem changes occur in the opposite direction from that expected under prevailing pollution conditions. The authors data suggest that the net effect of natural phenomena (e.g. winter storms, El Nino) on the benthos was greater than LACSD wastewater effects 1 km, about equal to LACSD wastewater effects 3 km, and less than the LACSD wastewater effects 5-15 km from the outfalls at the LACSD 1983-86 mass emission rate. Since natural phenomena may have an effect on the benthos = or > 3 years of LACSD wastewater effects, short-term benthic changes must be interpreted cautiously at the study site. |
| Supplementary Notes |
Pub. in Estuarine, Coastal and Shelf Science, v33 p383-407 1991. See also PB87-170775 and PB91-177188. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Temporal Changes in the Benthos along a Pollution Gradient: Discriminating the Effects of Natural Phenomena from Sewage-Industrial Wastewater Effects. |
| Category Codes |
68D; 47D; 47C; 57H |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/05 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
314125844 |
| Origin |
NTIS |
| Type |
CAT |
