220 likes | 419 Views
An Ecological Foundation for IPM. Island Biogeography. How are Island Biogeography and Agriculture Connected?. Give me an example. Community Succession. More Stability. More Diversity. Community Succession. Community Succession. Community Succession. Planting seed Fertilizers Weeding
E N D
How are Island Biogeography and Agriculture Connected? • Give me an example
Community Succession More Stability More Diversity
Community Succession • Planting seed • Fertilizers • Weeding • Soil preparation • Insecticides • Artificial selection
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
Biodiversity and Stability More Stability More Diversity
The facts Population response to polyculture Increase Decrease No change Variable response Andow 1991
Root 1973 “Resource concentration hypothesis”
Monoculture Polyculture