Deforestation And overfishing Flashcards
Define deforestation
Is the removal of the tress to use as timber or fuel or to repurpose the land use for agriculture or building
Define overfishing
Is where fish are caught at a higher rate than they reproduce and grow. This occurs to the point where increased fishing efforts lead to declining catches
Fish farming
Where fish are intensively reared in ponds/tanks or nets sea fish are usually reared in large better areas or the sea this is the one solution to overfishing
Consequences of deforestation
- Soil erosion
- Flooding
- Habitat loss reduces biodiversity
- Less photosynthesis
Solutions to deforestation
Selective felling
Replanting the correct mix of species, the correct distance apart and allowing them to regenerate
Protecting areas
Consequences of overfishing
- Fish populations may be reduced in size to the extent that they lose genetic diversity
- Size of fish caught us reduced as they don’t have time to grow
- Fish population has fewer individuals and cannot replace harvested fish
Solutions to overfishing
- Quotas
- Restricted fishing seasons
- Exclusion zones
- Increased mesh sizes
- Limiting the size of fishing fleets