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Population Management: The Basics

This presentation provides an overview of population management principles, emphasizing the growth curve concept, intrinsic growth rates, and reproductive strategies of species. It categorizes limiting factors into density-independent and density-dependent types, explaining how these factors impact populations differently. Density-independent factors affect populations regardless of size, such as climate events, whereas density-dependent factors, like diseases and parasites, influence populations based on their density. Understanding these concepts is vital for effective management and conservation efforts.

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Population Management: The Basics

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Presentation Transcript

  1. Population Management: The Basics Original Power Point Presentation Created by Andy Harrison Modified by GA Agriculture Education Curriculum Office July 2002

  2. Growth Curve • Think of population management like a bank account • Learn how to use the gain • J – Shaped growth

  3. J – Shaped Growth • Intrinsic of growth rate • Every species has “built in” rate of increase • Each species has evolved reproductive strategies and rates • Assures genetic continuance

  4. Limiting Factors • Two types • Density Independent • Density Dependent

  5. Density Independent • Factors which exert influence uniformly on populations of various sizes • Climate • Example: if a tornado destroys group of animals in area, does not matter how many present

  6. Density Dependent • Factors which exert influence on the population where the numbers of individuals present matters • Diseases and parasites are the best examples • In densely populated areas, spread of disease is much more likely

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