Advantages in Mathematically Weighting Waterfowl Food Habits Data

Authors

George A. Swanson, USGS Northern Prairie Wildlife Research Center
Gary L. Krapu, USGS Northern Prairie Wildlife Research CenterFollow
James C. Bartonek, USGS Northern Prairie Wildlife Research Center
Jerome R. Serie, USGS Northern Prairie Wildlife Research Center
Douglas H. Johnson, Northern Prairie Wildlife Research CenterFollow

Date of this Version

1974

Comments

Published in The Journal of Wildlife Management 38(2):302-307.

Abstract

The relative importance of various foods occurring in the diet of blue-winged teal (Anas discors), pintail (A. acuta), and gadwall (A. strepera) breeding in south-central North Dakota and lesser scaup (Aythya affinis) breeding in the vicinity of Great Slave Lake, Northwest Territories, are com- pared by the aggregate volume and aggregate percent methods. Advantages of the aggregate percent method are discussed in relation to the information presented.