BIOLOGY 1B Study Guide - Midterm Guide: Honey Badger, Logistic Function, Intermediate Disturbance Hypothesis
6 Apr 2016
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Evolution of ecological systems: origin of universe: ~13. 8 bya, origin of earth: 4. 6 bya, origin of life: 3. 9 bya, stromalites (communities of bacteria) appeared around 3. 5 bya. Endosymbiosis and eukaryotes: oxygen was once toxic but organisms learned to use it for biologic functions, via serial endosymbiosis, mutualistic engulfment occurred which drew prokaryotes into cell body, becomes mitochondrion, same process occurred for photoautotrophic eukaryotes. Cyanobacteria: bands of iron oxide (rust in sedimentary rock evidence of oxygenic photosynthesis by cyanobacteria) the oxygen revolution: eukaryote ex: tappania. Biofilms and microbiomes: biofilms appeared formed on nonliving environments (ex: dental plaque, microbiotic crusts/communities can lie dormant for many years waiting for the ideal living situation, human microbiomes are necessary for life. The scope of ecological science definitions for ecology: darwin: (1859) tangled bank , ernst haeckel (1869) oekologie (oikos: home + logos study , charles elton (1927) ecology is a new name for a very old subject.
