Record Display for the EPA National Library Catalog

RECORD NUMBER: 492 OF 636

OLS Field Name OLS Field Data
Main Title Role of Aquatic Vascular Plants in the Eutrophication of Selected Lakes in Western Massachusetts.
Author Livingsto, R. B. ; Bentle, P. A. ;
CORP Author Massachusetts Univ., Amherst. Water Resources Research Center.
Year Published 1967
Report Number Pub-11; OWRR-A-023-MASS; A-023-MASS-(1),; 03918
Stock Number PB-197 115
Additional Subjects ( Aquatic plants ; Food chains) ; ( Lakes ; Food chains) ; ( Ecology ; Lakes) ; Aquatic biology ; Growth ; Distribution(Property) ; Water pollution ; Massachusetts ; Phytoplankton ; Primary biological productivity ; Massachusetts ; Eutrophication
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-197 115 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 89p
Abstract
The growth and distribution of the aquatic vascular plants in nine lakes in western Massachusetts were examined in the field for two growing season. The objective of the study was to relate the growth and distribution of the vegetation to trophic levels in acid and alkaline lakes. Environmental parameters monitored included pH, total alkalinity, Secchi transparency, temperature, dissolved oxygen and conductivity. Nutrient levels were found by analysis of surface lake waters and plant shoot tissues for nitrogen and phosphorus. No significant correlations were obtained in these analyses. The distribution of the aquatic vegetation was correlated with total alkalinity and conductivity. Three groups of species were noted, those of waters with an alkalinity greater than 40 ppm CaCO3, those of waters with an alkalinity less than 40 ppm CaCO3, and those occurring regardless of alkalinity. Substrate also exerted a strong influence on plant distribution. No plants were found growing below the thermocline in the lakes sampled. Vegetative growth of the aquatic plants generally followed a standard growth curve. The standing crop was correlated with growth form and depth. Standing crops ranged from 0.3 to 420 g/sq m dry wt. Some difficulty was encountered in correlating plant growth with other parameters of trophic level. (Author)