BISC 100 - Lecture 35: Biodiversity

Why Biodiversity Matters

• Healthy ecosystems provide resources, such as
water, wood, and fish, and services such as

Coastal wetlands...

• Biological diversity, or biodiversity, includes

Genetic Diversity

Species Diversity

Two recent victims of human-caused extinctions
are the

Ecosystem Diversity

Causes of Declining Biodiversity

Habitat Destruction

Invasive Species

Overexploitation

Pollution

BIOMAGNIFICATION

The Carbon Cycle

The Phosphorus Cycle

The Nitrogen Cycle

Nitrogen has two abiotic reservoirs:

• Two major sources of nitrogen are

Nutrient Pollution

Conservation and Restoration Biology

Conservation biology

Restoration ecology

Biodiversity “Hot Spots”

Conservation at the Ecosystem Level

Landscape ecology

Edges between ecosystems

movement corridor

Restoring Ecosystems

The Goal of Sustainable Development

Evolution Connection: Can Biophilia Save
Biodiversity?