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A method for estimating fall adult sex ratios from production and survival data

Journal of Wildlife Management

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Abstract

This paper presents a method of utilizing data relating to the production and survival of a bird population to estimate a basic fall adult sex ratio. This basic adult sex ratio is an average value derived from average production and survival rates. It is an estimate of the average sex ratio about which the fall adult ratios will fluctuate according to annual variations in production and survival. The basic fall adult sex ratio has been calculated as an asymptotic value which is the limit of an infinite series wherein average population characteristics are used as constants. Graphs are provided that allow the determination of basic sex ratios from production and survival data of a population. Where the respective asymptote has been determined, it may be possible to estimate various production and survival rates by use of variations of the formula for estimating the asymptote.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A method for estimating fall adult sex ratios from production and survival data
Series title:
Journal of Wildlife Management
Volume
29
Issue:
1
Year Published:
1965
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
185-192
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
185
Last page:
192