Advantages in Mathematically Weighting Waterfowl Food Habits Data

• Main Authors: Swanson, George A, Krapu, Gary L, Bartonek, James C, Serie, Jerome R, Johnson, Douglas H
• Format: Text
• Language: unknown
• Published: DigitalCommons@University of Nebraska - Lincoln 1974
• Subjects: Other International and Area Studies; Northwest Territories; Great Slave Lake
• Online Access: https://digitalcommons.unl.edu/usgsnpwrc/207; https://digitalcommons.unl.edu/context/usgsnpwrc/article/1207/viewcontent/Johnson_JWM_1974_Advantages_weighting_waterfowl.pdf

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.