Northern Prairie Wildlife Research Center


Home	About NPWRC	Our Science	Staff	Employment	Contacts	Common Questions	About the Site

Evaluations of Duck Habitat and Estimation of Duck Population Sizes with a Remote-Sensing-Based System

Definitions

Definitions of the terms wetland, wetland area, wetland basin, and pond follow Cowardin (1982). We define four essential terms for describing nesting ducks: A successful clutch is a clutch of eggs of which one or more eggs hatch even if one or more dead young are found at the nest site (see successful, Klett et al. 1986). A successful nesting attempt is a hen's attempt to nest when that attempt results in a successful clutch. Clutch success is the probability that a clutch will be successful and is directly equivalent to nest success as defined by Klett et al. (1986). Hen success is the probability that a hen will make at least one successful nesting attempt during a single breeding season.

Previous Section -- Introduction
Return to Contents
Next Section -- Design

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/duckhab/define.htm
Page Contact Information: Webmaster
Page Last Modified: Friday, 01-Feb-2013 19:14:47 EST
Menlo Park, CA [caww54]