1855825
Description
Mind Map by 41elocnehpets, updated more than 1 year ago
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Created by 41elocnehpets
over 9 years ago
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Energy and food
production
- Natural ecosystems vs. agricultural ecosystems
- Natural
- Solar energy input only
- High biodiversity
- Climax community
- Complex food webs
- Inefficient energy transfer
- Solar energy input only
- Agricultural
- Food and fossil fuels drive
machinery and labour
- Low biodiversity, e.g.
selective breeding
- No predation
- Efficiency of energy transfer
enhanced by intensive
rearing
- Prevented from reaching climax
- Food and fossil fuels drive
machinery and labour
- Natural
- Pest control
- Biological
- Organism that eats the pest
- Self-replenishing
- Pest cannot become
resistant
- Agent may become a pest
- Organism that eats the pest
- Chemical
- Needs to be reapplied
- Pest may become
resistant
- Organisms higher up the food chain are
affected
- May have adverse effects
on health
- Needs to be reapplied
- Integrated
- Mixture of chemical and biological
- Best of both
worlds
- Mixture of chemical and biological
- Biological
- Intensive
rearing
- Movement restricted
- Predators eliminated
- Limited space
- Reduces energy loss by
respiration
- Maximises conversion rate of
energy to biomass, increasing
productivity
- Maximises conversion rate of
energy to biomass, increasing
productivity
- Considered unethical
- Predators eliminated
- Heat supplied
- Endotherms use energy
to maintain a constant
body temperature
- Reduces energy loss by respiration
- Endotherms use energy
to maintain a constant
body temperature
- Feeding controlled
- Movement restricted
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