AGR 2050 Lecture Notes - Species Richness, Agroecology, Secondary Succession
16 Jan 2013
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Document Summary
As disturbance declines seed bank migrates to surface of soil. More extremes, microbial, predators in this level of soil, equates to a certain degree of biological control level of disturbance will influence the type of species that are present. Secondary succession begins with seed bank and nutrient system supports rapid colo- nization forces at beginning of secondary succession don t complement agricultural production. Nutrient cycling legume species are early succession stage (lots of n in soil) Species (in seed bank) difference in ability to perform. Opting for different species than your neighbor. Understanding - allowing process that are closer to nature. Is it possible? how? (mid term question) Tropical intercropping - looks like a bush. Biodiversity - substantial at any level of trophic system. Species diversity increases with biomass production- to a level of maturity. Graph - changes in diversity and biomass. If you want get 400 bushells of corn by pouring nitrogen into the ground.
