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How do we protect biodiversity?
Protected areas habitat corridors, sustainable land use, and restoring lost habitats
What are the 7 principles for better cities?
Preserve, Mix, Walk, Bike, Connect, Ride, Focus
Preserve
reserve natural ecologies, agrarian landscapes, & cultural heritage sites
Bike
Prioritize bicycle networks & auto-free streets
Focus
Match density & mix to transit capacity
Solutions for urban sprawl
Concentrate the population into urban centers, Downtown must be more accessible and user friendly.
What are invasive species?
non-native species that have been introduced into an ecosystem (usually by human actions) and cause harm to the native species
Why are invasive species harmful ?
They typically reproduce earlier and often. They are usually generalists, and can outcompete with native species for resources. They have no natural predators in the new environment.
Sea Lampery Case
When several canals were added in
New York, sea lamprey were able to
reach Lake Ontario. They were well
established and fish populations began
to decline in Lake Ontario
Solutions for the Sea Lampery Case
Starting in the 1950s lampricide was used. Sterilization programs are now being launched.
What is urban sprawl?
The unplanned growth of urban areas into the surrounding countryside.
What are the consequences of urban sprwal ?
Environmental Degradation, Social and Health Issues,
Connect
Increase density of road network, limit block size
Ride
Develop high quality transit & affordable BRT (Bus Rapid Transit)
Example of a city that suffers from Urban Sprawl
Los Angeles, California
Mix
Create mixed-use & mixed-income neighborhoods
Walk
Design walkable streets & human scale neighborhood
Stages of population control (phases of India)
1. Clinical approach
2.target oriented sterilization (vasectomy)
3. target oriented sterilization (vasectomy)
4. compolary approach (family planning)
5. Backlash and recovery
6. reproductive and child health
