BIO220H1 Lecture Notes - Lecture 18: Tallgrass Prairie, Polyculture, Species Richness
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BIO220H1 Full Course Notes
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Going from multiple alleles in focal population to changes in ecological processes. Biodiversity: biodiversity results in resistance to environmental perturbation and higher productivity, guilds: variety of plant strategies, the cedar creek experiment = used experimental plots of minnesota prairie containing differing numbers of plant species. There were plots of squares, and each square section used to be tall grass prairie. Each plot had a different number of species, one square might have 6, 8 or 10 replicated in the field. Different number of species, or different group of species. (a) the biomass remaining after a drought plots that have really high species richness/large number of individual species retained about half their biomass after a drought. Those that had smaller numbers of species lost more of their biomass. Higher-diversity systems are more likely to include species that can withstand particular stress.
