16 Pest Control 10-26-09

16 Pest Control 10-26-09 - 10/27/2009 Ecology 203 Overview...

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Unformatted text preview: 10/27/2009 Ecology 203 Overview Geographic Distributions Populations Communities Ecosystems Applications Gregg Hartvigsen 1 10/27/2009 Populations Population parameters (C8) Population growth (C9) Competition (C10) Predation (C11) Herbivory and Mutualism (C12) Disease and Parasitism (C13) Regulation of Populations (C14) Harvesting Populations (C15) Pest Control (C16) Conservation Biology (C17) Age Structure and Population Dynamics Key Factor Analysis = using life table data to determine which life stage most strongly affects population ff dynamics. Experimental Analysis = analyzing the population data to assess the strength of population regulation. 2 10/27/2009 3 10/27/2009 “Source and Sink Populations” λ = 0.8 λ = 0.9 λ = 1.2 “Source and Sink Populations” λ = PA + Pfβ Eq. 14.4, p. 272 λ = finite rate of population growth PA = adult survival rate per year Pf = juvenile survival rate per year β = per capita juvenile births Does this equation look familiar? 4 10/27/2009 Populations Population parameters (C8) Population growth (C9) Competition (C10) Predation (C11) Herbivory and Mutualism (C12) Disease and Parasitism (C13) Regulation of Populations (C14) Harvesting Populations (C15) Pest Control (C16) Conservation Biology (C17) Pest Control Problem – Agricultural Factors for Successful Eradication Examples Biological Control Risks 5 10/27/2009 re 16-1 re 16-2 6 10/27/2009 re 16-3 Control Strategies (4) Natural Control Pesticides Cultural Control Biological Control 7 10/27/2009 Pest Control Problem – Agricultural Factors for Successful Eradication Examples Biological Control Risks Six Factors of a Successful Program 1. 2. 3. 4. 5. 6. Sufficient resources Decision making ability Pest easy to find and kill Prevent reintroduction Easy detection of pest, especially when when rare Restoration post removal 8 10/27/2009 9 10/27/2009 Pest Control Problem – Agricultural Factors for Successful Eradication Examples Biological Control Risks 10 10/27/2009 11 10/27/2009 12 10/27/2009 re 16-8 Salvinia 13 ...
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16 Pest Control 10-26-09 - 10/27/2009 Ecology 203 Overview...

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