Energy and Ecosystems
- Created by: Sarah
- Created on: 28-04-14 11:48
View mindmap
- Energy & Ecosystems
- Energy transfer = (energy available after / before) x100
- Net productivity = gross productivity - respiratory losses
- Biological control
- Specific
- Self reproducing
- Always effective
- Takes time
- Never rid of pests completely
- Chemical control
- Needs to be reapplied
- Resistence
- effects non-target species
- Intensive rearing
- restricted movement
- warm environment reduces heat loss
- high protein food
- predators are excluded
- hormones increase growth
- cheap production
Comments
No comments have yet been made