Master's Theses

Department

Biology

Degree Name

Master of Science (MS)

Abstract

Preliminary limnological information was obtained from Cedar Bluff Reservoir, Trego County, Kansas. The reservoir is surrounded by limestone deposits with mixed grass prairie. Temperatures, recorded at meter intervals, depicted only a slight stratification in midsummer, 1967, and an inverse stratification under ice cover. Homothermous conditions existed at all other times. Transparency, determined with a Secchi disc, ranged from 0.5 to 2.5 meters and was lowest with the presence of large zooplankton populations. Total alkalinity, determined by the phenolphthalein and methyl orange titrations, varied little throughout the study and ranged from 105-120 ppm. pH also showed little variation, ranging from 7.9 to 8.3, and stratification was never detected. Dissolved oxygen, determined by the azide modification of the Winkler method, was lowest in the summer and highest in the winter, with stratification occurring at the same time as temperature stratification. Five species of cladocerans and four species of cope pods were present. Of the cladoceran species, two were perennial, one occurred in the summer, and one occurred only in the autumn. The cope pods were composed of three perennial species and one occurring only in the summer. The greatest abundance of zooplankton occurred in late July, 1967.

Keywords

Limnologists, Zoology, Grassland ecology, Soil conservation, Prairies, Trego County (Kan.), Cedar Bluff Reservoir (Kan.), Limestone

Advisor

Dr. Thomas L. Wenke

Date of Award

Summer 1968

Document Type

Thesis - campus only access

Rights

© The Author(s)

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