Flashcards
Macroevolution
Flashcards do conjunto (9)
- 1Palaeodiversity CurveShows:
Changes in evolutionary fauna
Mass extinctions
Diversification events
Adaptive radiations
Long term macro -evolutionary patterns - 2Origination and Extinction Rates =The rates at which new taxa appear and disappear through geological time
- 3Red Queen HypothesisOrganisms must adapt constantly to gain reproductive advantage. Identifies biological interactions (biotic competition)
- 4Court Jester HypothesisAbiotic forces e.g. climate are the main drivers of macro evolutionary change. Can be completely random with regard to phylogeny.
- 5Cambrian ExplosionRapid transition from simple ecosystem of ediacaran to complex ecological systems of the present.
- 6Cambrian Explosion CausesEnvironmental Change (court jester)
Genetics (red queen)
Ecological change (red queen) - 7Onshore-Offshore EvolutionHigher rates of physical disturbance, resources, competition and predation drive higher levels of turnover and evolutionary innovation in near shore areas. (Red queen/ court jester)
- 8Mesozoic Marine RevolutionReduction in epifauna, the rise in infauna, and the rise of mobile epifauna has been driven by an increase in predation pressures over past 250myr.
Red Queen Hypothesis. - 9Big 5 Mass ExtinctionsCaused by rapid environmental upheavals - rapid warming associated with large igneous provinces.
Court Jester Hypothesis.