Document Type

Thesis - Open Access

Award Date

1971

Degree Name

Master of Science (MS)

Department

Wildlife Management

Abstract

Benthos samples were collected in Lake Poinsett, a highly eutrophic eastern South Dakota lake, from March 1970 through February 1971. The lake bottom was divided into three substrate types (sand, sand-sapropel mixture and sapropel) and the percent of each substrate type was calculated. Nineteen macroscopic genera were taken from ten sampling stations located throughout the lake. Descriptions are presented for organisms in this group. Diversity of organisms was greatest in the sand substrates, in that all 19 genera were collected. Chironomus spp. (Chironomus plomosus, Chironomus attenuates and six unidentified species) was the most abundant group of organisms and occurred most frequently in the sapropel (mud) substrate. Forty percent (514.2/m2) of mean annual numbers and 77% (0.9961 gm/m2) of mean annual dry weight from all substrates consisted of organisms from these eight species of Chironomus. The mean annual standing crop (1.28 gm/m2) in Lake Poinsett was approximately average in comparison to other lakes.

Library of Congress Subject Headings

Chironomidae
Benthos
Lake Poinsett (S.D.)

Description

Includes bibliographical references (pages 43-45)

Format

application/pdf

Number of Pages

76

Publisher

South Dakota State University

Rights

No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/

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