ENVS195 Lecture Notes - Lecture 6: Secondary Succession, Polar Amplification, Lichen
5 Dec 2017
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Document Summary
It is natural for ecosystems to change over time. Biosphere: the areas on the planet where living organisms exist. Non-living components/characteristics of ecosystems that impact distribution of biotic components. Different species going to react differently to presence or lack of these components. Species have a range or minimal level of the elements required for survival. If one element is missing called dominant living factor (hindering their life) Two important elements that influence ecosystem (biome) location or survival: Is generated through interaction between biotic and abiotic factors throughout evolution. Ultimate source of all biodiversity as it leads to species diversity. Variability in genetic makeup among individuals of the same species; the ultimate source of biodiversity at all levels. Maintain health of population and avoid impact of inbreeding and allows species to withstand impact. Leads to mutations that then lead to diff species". Total number of species in an area. Variety of ecosystems u can find in a given area.
