ES290 Lecture Notes - Lecture 5: Gamma Diversity, Alpha Diversity, Beta Diversity
28 Oct 2020
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Es290 lecture 5: transportation networks, newly tilled fields in na yielded surpluses that could be exported, facilitated the development of a food transportation network and marks the beginning to international investment in agriculture 4. Green revolution: breeding programs beginning in the mid 1940"s led to the proliferation of higher yielding varieties there was also access to cheap chemicals, nitrogen fixation humans fix more nitrogen than all the natural organisms. Additional consequences soil erosion: loss of fertility, desertification, salinization, reduced crop plant genetic diversity (75% loss) resilience (due to lack of diversity, cultural loss. Many traditional agricultural systems promote biodiversity and ecosystem function. Biodiversity the variability among living organisms from all sources including terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they. Genetic diversity: genetic variation within populations or species. Species diversity: number of species in an area and their relative abundances. Diversity among higher taxa ecosystem biodiversity: variation among ecosystems, communities lomoar cpsd| 5490467.
