a13 population (1.4/5/6)
- Created by: phebez
- Created on: 06-10-15 19:41
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- COMPETITION
- INTRASPECIFIC
- individuals of the same species compete with one another for resourses
- 2 species occupy the same niche
- one will normally have a competitive advantage
- pop. of this species gradually increases
- this might cause a complete removal of one species
- COMPETITIVE EXCLUSION PRINCIPLE
- this might cause a complete removal of one species
- pop. of this species gradually increases
- one will normally have a competitive advantage
- A13 POPULATION
- HUMAN POPULATION
- manufacturing+ trade = industrial revolution
- agriculture
- DEATH RATE
- medical care
- natural disasters
- age profile
- food supply
- war
- life expectancy at birth
- safe drinking water+ effective sanitation
- HUMAN POPULATION
- INTRASPECIFIC
- INTERSPECIFIC
- individuals of different species compete for resourses
- COMPETITION
- INTRASPECIFIC
- individuals of the same species compete with one another for resourses
- 2 species occupy the same niche
- one will normally have a competitive advantage
- pop. of this species gradually increases
- this might cause a complete removal of one species
- COMPETITIVE EXCLUSION PRINCIPLE
- this might cause a complete removal of one species
- pop. of this species gradually increases
- one will normally have a competitive advantage
- A13 POPULATION
- HUMAN POPULATION
- manufacturing+ trade = industrial revolution
- agriculture
- DEATH RATE
- medical care
- natural disasters
- age profile
- food supply
- war
- life expectancy at birth
- safe drinking water+ effective sanitation
- HUMAN POPULATION
- INTRASPECIFIC
- factors organisims compete for
- food, water, light ,breeding sites etc.
- PREDETATION
- occurs when one organism is consumed by another
- population crashes create a selection pressure- only who survive can reproduce so the pop. evolves to be better adapted
- predators eat their prey - educing prey population
- fewer prey- predators are in greater competition
- predator population reduced - not enough prey for survival
- PREDETATION
- occurs when one organism is consumed by another
- population crashes create a selection pressure- only who survive can reproduce so the pop. evolves to be better adapted
- fewer prey- predators are in greater competition
- prey population increases
- more prey- predator population in turn increases
- fewer predators- fewer prey are eaten
- predator population reduced - not enough prey for survival
- BIRTH RATE
- economic
- cultural+ religious background
- birth control
- social pressure and conditions
- political factors
- SURVIVAL CURVE IS THE % OF A POP. STILL ALIVE AFTER A PARTICULAR EVENT
- THE AVERAGE LIFE EXPECTANCY IS THE STAGE AT WHICH 50% OF THE INDIVIDUALS IN A PARTICULAR POP. ARE STILL ALIVE
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