Author

Gene D. Mack

Document Type

Thesis - Open Access

Award Date

1977

Degree Name

Master of Science (MS)

Department

Wildlife and Fisheries Science

Abstract

A July waterfowl brood survey was conducted from 1973 to 1976 on stock ponds located within four physiographic strata in South Dakota. Information was collected on weather, stock pond characteristics, land use and the condition of other wetlands located within the quarter section (64.8 ha) study plots. Multiple regression and multiple discriminant analyses were sued to determine the importance of these variables in influencing brood use of stock ponds. Vegetation type, distribution of emergent vegetation and pond size were important in determining if broods of any particular species utilized a pond or not. Shoreline distance was particularly important in explaining variation in brood densities. Highest brood densities occurred on stock ponds of 0.40 to 1.00 ha surface-water area. Blue-winged teal (Anas discors) broods were positively associated with alfalfa and negatively associated with total stream area on the study plot. Mallard (Anas platyrhynchos) broods were negatively associated with pasture and hayland. Pintail (Anas acuta) and gadwall (Anas strepera) broods exhibited a positive association with stock ponds that had a dispersed pattern of vegetation and were located in areas of high surrounding wetland densities. Older broods of all four species combined (subclass IIc and class III) were positively associated with stock ponds having a stable water level and emergent vegetation.

Library of Congress Subject Headings

Waterfowl -- South Dakota
Farm ponds -- South Dakota

Description

Includes bibliographical references (pages 48-50)

Format

application/pdf

Number of Pages

59

Publisher

South Dakota State University

Rights

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

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