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D4.3: climate change HL - Coggle Diagram
D4.3: climate change HL
phenology: study of seasonal timing of events in plants and animals ( like blooming can indicate climate change )
- changes in timing can indicate climate change and 2 factors play into when those events occurs:
- temperatures ( bud burst: heaving new leaves on a plant )
- photoperiod ( daylight hours per day which varies seasonally ) like bud set ( growth stoppage ), flowering ( short vs long day ) and bird migration
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- like migration and food availability
- photoperiods don’t change but temperature does change due to climate change which increase CO2 in the atmosphere
- two interacting species need to synchronize their timing which may be hard since one may be cued by photoperiods and the other by temperature and a disruption in temperature might throw off the timing of events necessary for successful interaction which disrupts the ecosystem
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- warmer temperatures affect pests positively since they increase them
- higher temperature —> more trees —> more beetle homes —> more beetles
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- for the species to adapt they have to evolve
- evolution is the change in heritable characteristics in a population
- natural selection requires:
- overpopulation and competition over resources
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- survival of the fittest where fittest is the degree to which a species can survive due to its advantage in heritable characteristics
- fitness —> passing down of that characteristic —> increase in trait frequency
- when climate changes = evolutionary changes