Conservation/Extinction Flashcards Preview

ENV 103 > Conservation/Extinction > Flashcards

Flashcards in Conservation/Extinction Deck (14):
1

Biodiversity

Richness, abundance, and variability of plant and animal species and communities and the ecological processes that link them with one another and with soil, air, and water

2

What is the biggest species?

Insects (4-30 million)

3

What is the smallest species?

Mammals (5500)

4

How many species are there total?

8.7 million

5

What percent of the total amount of species are in North America?

15%

6

Tree Diversity Depends On...

The area the trees are in

7

Most Diverse Tree Populations

Tropics
Rainforests

8

Ecosystem

Superorganism

9

What is dependent on what?

Species conservation is dependent on ecosystem conservation and vice versa

10

What are major threats to biodiversity? (4)

Invasive diseases
Roads/cars
Pollution
Boats

11

How do invasive diseases become a thing?

They are brought to US by other countries

12

Examples of pollution that threats biodiversity (2)

Oil spills
Ocean garbage

13

Fragmentation

Cutting down trees to expand housing/businesses

14

How does fragmentation affect song birds?

They come back from the south to find no trees to