Main Title |
Retrospective Analysis of the Response of Saginaw Bay, Lake Huron, to Reductions in Phosphorus Loadings. |
Author |
Bierman, Jr., V. J. ;
Dolan, D. M. ;
Kasprzyk, R. ;
Clark, J. L. ;
|
CORP Author |
Environmental Research Lab.-Duluth, Grosse Ile, MI. Large Lakes Research Station. ;International Joint Commission, Windsor (Ontario).;Environmental Research Lab., Narragansett, RI. |
Year Published |
1983 |
Report Number |
EPA-600/J-84-001; |
Stock Number |
PB84-170943 |
Additional Subjects |
Phosphorus ;
Water pollution ;
Saginaw Bay ;
Lake Huron ;
Concentration(Composition) ;
Seasonal variations ;
Chlorophylls ;
Sediments ;
Lake waves ;
Wind(Meteorology) ;
Biomass ;
Odors ;
Phytoplankton ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB84-170943 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
11p |
Abstract |
A retrospective analysis was conducted of the response of Saginaw Bay, Lake Huron, to a substantial reduction in external phosphorus loadings over the study period 1974-1980. Loadings to Saginaw Bay from the Saginaw River for total phosphorus and dissolved ortho phosphorus were 55% and 72% lower, respectively, in 1980 than in 1974. In the most seriously degraded area of the bay, spring and fall total phosphorus concentrations decreased by 1% and 14%, respectively, while chlorophyll a concentrations decreased by 53% and 61% in the same seasons. The corresponding decreases for inverse Secchi depth were 0% and 17%. Sediment resuspension due to wind-induced wave action was the probable cause for the anomalous relationship between chlorophyll a and total phosphorus concentrations, and the lack of response of inverse Secchi depth. A substantial decrease in threshold odor observed in the municipal water supply during the study period was correlated with a decrease in blue-green dry weight biomass concentration. |
Supplementary Notes |
Also pub. as Environmental Research Lab., Narragansett, RI. Contrib-343. Prepared in cooperation with International Joint Commission, Windsor (Ontario). |
Availability Notes |
Pub. in Environmental Science Technology, v18 n1 p23-31 1984. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Retrospective Analysis of the Response of Saginaw Bay, Lake Huron, to Reductions in Phosphorus Loadings. |
PUB Date Free Form |
c1983 |
Category Codes |
8H; 68D; 48G |
NTIS Prices |
Not available NTIS |
Primary Description |
600/03 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
417424433 |
Origin |
NTIS |
Type |
CAT |