| Main Title |
Seasonal Variation of Potential Nutrient Limitation to Chlorophyll Production in Southern Lake Huron. |
| Author |
Lin, C. K. ;
Schelske, C. L. ;
|
| CORP Author |
Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN. |
| Year Published |
1981 |
| Report Number |
Contrib-23; EPA-R-800965; EPA-600/J-81-662; |
| Stock Number |
PB84-128164 |
| Additional Subjects |
Phytoplankton ;
Nutrients ;
Growth ;
Lake Huron ;
Chlorophylls ;
Biological productivity ;
Bioassay ;
Phosphorus ;
Nitrogen ;
Silicon dioxide ;
Chelates ;
Trace elements ;
Iron ;
Vitamins ;
Seasonal variations ;
Concentration(Composition) ;
EDTA ;
Reprints ;
Foreign technology
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-128164 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
Potential nutrient limitation to chlorophyll production in surface waters of southern Lake Huron was assayed monthly from April to December 1975. Natural phytoplankton assemblage responses to nutrient enrichment were determined from chlorophyll production in laboratory incubations under seasonally varied light and temperature conditions. Experimental treatments included a complete treatment containing P, N, Si, EDTA, vitamins, and trace metals; treatments with deletions from the complete treatment; complete treatments and different P concentrations; and treatments with single nutrient additions. Effects were most pronounced during summer and fall when P, EDTA, FeEDTA, vitamins, and Si were added simultaneously. The intensity of the effect resulting from additions of phosphorus and other nutrients varied seasonally. Individual additions of EDTA, N, and Si had little effect as did deletion of N from the complete treatment. Addition of P alone resulted in limited growth. Deletion of phosphorus from the complete enrichment, however, reduced growth drastically during most experimental period. |
| Availability Notes |
Pub. in Canadian Jnl. of Fisheries and Aquatic Science 38, p1-9 1981. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Seasonal Variation of Potential Nutrient Limitation to Chlorophyll Production in Southern Lake Huron. |
| PUB Date Free Form |
c1981 |
| Category Codes |
6C; 8H; 57C; 48G |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/03 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
406248266 |
| Origin |
NTIS |
| Type |
CAT |
