Conservation Biology

Question 1

biodiversity encompasses what 3 levels?

Answer 1

1. ecosystem diversity
2. species diversity
3. genetic diversity

Question 2

biodiversity also provides…

Answer 2

food, fibers, medicines, and ecosystem services

Question 3

examples of ecosystem diversity

Answer 3

white coral reefs

Question 4

species diversity contains…

Answer 4

• extirpation

- extinction

Question 5

an example of extirpation

Answer 5

bission

Question 6

an example of extinction

Answer 6

golden toads

Question 7

What are some threats to biodiversity?

Answer 7

• habitat loss
• invasive species
• overharvesting
• pollution
• climate change

Question 8

what is the SINGLE greatest threat to biodiversity

Answer 8

human alteration

Question 9

how do invasive species disrupt communities?

Answer 9

by competing with, preying on, or parasitizing native species

Question 10

What is a threat to many species?

Answer 10

harvesting at rates that exceed the population’s ability to rebound

Question 11

invasive species examples

Answer 11

• brown snakes that eat birds

- cats

Question 12

pollution encompasses the idea of…

Answer 12

biological magnification

Question 13

what is biological magnification?

Answer 13

the idea that pollutants increase with trophic levels

Question 14

effects of climate change are seen in

Answer 14

• melting ice sheets
• rising seas
• extreme weather

Question 15

global temperatures are a result of…

Answer 15

rising concentrations of greenhouse gases produced by human activities

Question 16

green house gases include..

Answer 16

• carbon dioxide (CO2)
• methane (CH4)
• nitrous oxide (N2O)

Question 17

What are responsible for rising concentrations of green house gases?

Answer 17

human activites

Question 18

Where does the carbon come from?

Answer 18

• fixed through organic material
• burning fossil fuels
• absorbed by photosynthetic organisms and incorporated into biomass

Question 19

What is the effect of CO2 being absorbed into the ocean?

Answer 19

negative effect on organisms that construct shells or exoskeletons out of calcium carbonate

-formation of carbonic acid decreases concentration of carbonate ions

Question 20

what is a consequence that global warming causes on terrestrial biomes?

Answer 20

changing distribution, especially for organisms that live in high latitudes/elevations

Question 21

climate change also causes a

Answer 21

mismatch in phenology

Question 22

phenotypic plasticity has minimized the impact of…several cases of….. have been observed

Answer 22

• climate change on some species

- microevolutionary change

Question 23

Rapid environmental changes makes it hard for evolutionary processes to save species because?

Answer 23

The environmental changes happen too rapidly and the organisms do not have enough time to adapt