Population Characteristics and Simulation: Modeling of Black Ducks.

Abstract

This study was initiated because of concern for the population status of black ducks, and because excessive black duck harvest has been implicated in the decline of the black duck population as evidenced by Winter Survey trends. A review of literature about black duck distribution, migration, and population dynamics is presented. The preseason and winter handing and recovery files are described and their limitations are discussed. Twenty-seven preseason major reference areas of banding and 15 winter major reference areas of banding are defined. Annual estimates of recovery rates and survival rates and their sampling variances are shown for each age and sex group for preseason and winter bandings in 6 appendixes. Survival rates in years of liberal hunting regulations are similar to survival rates in years of restrictive regulations. This supports the idea that hunting mortality is largely compensated for by a reciprocal response in natural mortality.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA322806

Entities

People

  • Warren W. Blandin

Organizations

  • Clark University

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Birds
  • Correlation Analysis
  • Data Science
  • Databases
  • Habitats
  • Information Science
  • Medical Personnel
  • New England
  • North America
  • Statistical Analysis
  • Statistical Tests
  • Statistics
  • Surveys
  • United States
  • Wildlife

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