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An Ecological Foundation for IPM. Island Biogeography.

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Presentation on theme: "An Ecological Foundation for IPM. Island Biogeography."— Presentation transcript:

1 An Ecological Foundation for IPM

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5 Island Biogeography

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8 How are Island Biogeography and Agriculture Connected? Give me an example

9 Community Succession More Diversity More Stability

10 Community Succession

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12 Planting seed Fertilizers Weeding Soil preparation Insecticides Artificial selection Community Succession

13 R vs K-selection species r-selection species. - High fecundity - Short generation time - Low competitive ability - High dispersal

14 R vs K-selection species K-selection species. - Lower fecundity - Longer generation time - Higher competitive ability - Lower dispersal

15 R

16 Biodiversity and Stability More Diversity More Stability

17 The facts Herbivores441493658 Monophagous171303142 Polyphagous2719516 Predators38111427 Parasitoids30136 Andow 1991 Population response to polyculture IncreaseVariable responseNo changeDecrease

18 “Resource concentration hypothesis” Root 1973

19 Monoculture Polyculture

20 TOO MANY VARIABLES!!!!!!!!!!!!

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