Main Title |
in situ Evaluation of Nutrient Effects in Lakes. |
Author |
Jorda, Robert A. ;
Bende, Michael E. ;
|
CORP Author |
Virginia Inst. of Marine Science, Gloucester Point. |
Year Published |
1973 |
Report Number |
EPA-16010-HIU; 11070,; R3-73-018 |
Stock Number |
PB-221 341 |
Additional Subjects |
( Lakes ;
Primary biological productivity) ;
( Phytoplankton ;
Ecology) ;
Nutrients ;
Nitrogen ;
Phosphorus ;
EDTA ;
Populations ;
Limnology ;
Chelates ;
Sewage ;
Stimulation ;
Evaluation ;
Experimental design ;
Plant growth ;
Water pollution ;
Eutrophication ;
Limiting factors ;
Acetic acid/nitrilo-tri ;
Water pollution effects(Plants)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-221 341 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
228p |
Abstract |
A method for performing in situ nutrient enrichment experiments on natural lake phytoplankton communities was developed and evaluated. One set of experiments in which it was employed was designed to detect limiting nutrients and to provide a basis for predicting future experiment results. Individual species responded differently to different treatments, and interactions among the treatment variables were important in shaping the community responses to mixtures of two or three variables. The most consistent features of the productivity results were incorporated into a 'most probable response pattern,' which was partially validated by a second series of experiments. The second experiment series was also used to test the ability of NTA to stimulate phytoplankton productivity. In a third series of experiments sewage effluents were tested in parallel with N and P. Recommendations for the use of in situ enrichment experiments in eutrophication studies are presented. (Modified author abstract) |