Abiotic Factors Affecting Population Size (AQA A-Level Biology): Flashcards
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Abiotic factors
Abiotic factors
Non-living environmental conditions affecting populations
Optimum temperature range
Optimum temperature range
Temperature range where biological functions work best
Denaturation
Denaturation
Loss of enzyme functional shape due to high temperature
Effect of extreme temps on warm-blooded organisms
Effect of extreme temps on warm-blooded organisms
More energy for thermoregulation, less for growth/reproduction
Light effect on plant populations
Light effect on plant populations
Higher light → more photosynthesis → faster growth
pH effect on enzymes
pH effect on enzymes
Affects 3D structure and function of enzymes
Optimum pH
Optimum pH
pH range where enzymes operate most effectively
Effect of low humidity on plants
Effect of low humidity on plants
Increases transpiration (water loss through leaves)
Effect of water scarcity on populations
Effect of water scarcity on populations
Limits populations to drought-adapted species only
Niche separation
Niche separation
Species occupying different environmental condition ranges