The Open School of Neo-tropical Animal Science and Production

AGLS 6502 Lecture 3 - An Introduction to Ecology

 

3.1 An Introduction To Animal Ecology

 

Ecology Texts:

Odum (1983): Basic Ecology

Anderson (1991): Management of Wildlife Resources Second Edition, Prentice Hall Inc.

 

Objectives:

(1) What is Ecology     Odum - (1983)

(2) Components in the Study of Ecology

(3) Characteristics of Wildlife Populations     Anderson (1991): Chapter 2

  • Populations, Communities and Ecosystems
  • Birth on Natality Rate
  • Death on Maturity Rate
  • Life Tables
  • Survivorship Curves
  • Productivity
  • Density
  • Age Structure
  • Genetic Composition

(4) What is a Habitat

(5) Evolution and Adaption

 

Readings:

Characteristics of Wildlife Populations - Birth/Death Rates, Productivity, etc. (Google Books)

Presentation: Life Tables and Survivorship Curves - University Illinois Chicago

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3.2 Population Growth & Interactions

 

Anderson (1991): Chapter 3

Objectives:

(i) Population Growth

  • Growth Form
  • Growth Equation
    • Exponential
    • Logistic

Readings:

Introduction to Population Modelling

Logistic Population Growth: Equation, Definition & Graph

 

(ii) Interactions

  • Competition
  • Mutualism                  
  • Predation                    
  • Commensalism
  • Hunting & Fishing                             
  • Symbiosis
  • Parasitism
  • Diseases

Readings:

Population Interactions - Terms


Population Interactions - Terms

Helpful text - Hunting & Fishing. pg. 155 of Google Book

Article on diseases in wildlife populations

 

(iii) Population Cycles

  • Stress
  • Food
  • Genetics

Readings:

Density-independent forces and density-dependent forces

Population cycles - Intrinsic and extrinsic density dependent forces due to food and other factors

Population cycles due to genetics. See section: The Logic of GFG Coevolution in Natural Ecosystems


 

 

 (iv) Population Regulation (see above readings):

  • Density Independence - all vital rates of the population and its growth rate were dependent only on the environment. Click here for source.
  • Density Dependence - caused by limited availability of a necessary commodity. Click here for source.
  • Population Constraints

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3.3 Population Movements & Measurements

 

Anderson (1991): Chapter 4

Objectives:

 

(i) Population Movement

  • Migration
  • Immigration
  • Emigration
  • Measuring Movements

(ii) Collecting Pollution Data

  • Total Counts              
  • Sampling
  • Precision
  • Stratified Sampling
  • Cluster Sampling
  • Sample Size
  • Indices

(iii) Methods

  • Aerial Surveys
  • Trapping
  • Transects
  • Mapping
  • Indirect Methods
  • Mark Recapture
  • Banding
  • Roadside & Cell Counts
  • Animal Welfare

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3.4 Population Modelling

 

Anderson (1991): Chapter # 5

Objectives:

(i) Models and Wildlife

  • Definition of a Model
  • Development of a Model
  • Model Characteristics
  • Types of Models
    • Stochastic
    • Deterministic
  • Wildlife Modeling
    • Population Models
    • Habitat Models
    • Planning  Models

(ii) Some Models used in Wildlife Management

  • Population Models
    • One Population
    • Turkey
    • Fishers
    • Deer
    • Eagle
    • Fish
    • Kite
    • Disease
  • Habitat Models
    • Correlation
    • Predicture

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Helpful Links, Photos, Videos and Multimedia

 

Lecture: An Introduction to Ecology explains the different levels of organisation within populations

 

 

 

 

 

 

 

Information on evolution and adaptation. Click link below for University California Berkley lecture notes:

 


 

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prof. Gary W. Garcia, Department of Food Production, University of the West Indies, St. Augustine. Updated: 18-Jan-2015