An Ecological Foundation for IPM. Island Biogeography.

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Presentation transcript:

An Ecological Foundation for IPM

Island Biogeography

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

Community Succession More Diversity More Stability

Community Succession

Planting seed Fertilizers Weeding Soil preparation Insecticides Artificial selection Community Succession

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

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

R

Biodiversity and Stability More Diversity More Stability

The facts Herbivores Monophagous Polyphagous Predators Parasitoids30136 Andow 1991 Population response to polyculture IncreaseVariable responseNo changeDecrease

“Resource concentration hypothesis” Root 1973

Monoculture Polyculture

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