Biodiversity
When evaluating an ecosystem’s biodiversity, you need to look at species ________________ and species ____________ to determine the Shannon Wiener Index (overall diversity)
Richness; evenness
TRIPLE POINTS
Are island species specialists or generalists?
specialists because they are evolved to eat what is available on the island.
List 2 reasons why animals migrate
MATING, FOOD, RESOURCES, CHANGE IN CLIMATE
Explain the importance of a keystone species.
KEEP THE POPULATIONS IN CHECK AND HOLD THE ECOSYSTEM TOGETHER
DOUBLE POINTS
Why is having high biodiversity important?
allows them to be more resillient to disturbances (disease, natural disasters, habitat loss)
STEAL 200 FROM ONE TEAM
Why do islands closer to the mainland have more biodiversity?
Less distance for organisms to migrate
DOUBLE
Imagine an invasive species is introduced in an ecosystem. How would this impact the generalist and specialist species?
IMPACT THE SPECALIST MORE THAN GENERALIST
Imagine a group of mice with heritable variation in fur color (black vs. tan) has just moved into a new area where the rocks are black. This environment features hawks, which like to eat mice. How do you expect the population to change over the next decade?
Tan would decrease because they cannot blend in
Look at the diversity chart on the board. Which ecosystem will be most resilient to a natural disaster?
Ecosystem B
Why do smaller islands have less biodiversity?
FEWER RESOURCES AND SPACE TO SUPPORT SPECIES
Are indicator species specialists or generalists? Why?
Specialists because they die out easily which is why they can signal that the environment is declining.
A community in the EARLIEST succession stages would have lots of __________ species and in the LATEST stages of succession you would see ___________________.
pioneer species (moss, lichen, etc).
a climax community (a forest with trees and animals)
STEAL 100 FROM 3 TEAMS
Look at the diversity chart on the board. Which ecosystem has most likely recently experienced population bottleneck?
Ecosystem A
Label the following with the correct ecosystem service:
A. tourism in national parks
B. the carbon cycle
C. harvesting/ selling fossil fuels
D. trees are a carbon sink
A. Cultural
B. Supporting
C. Provisioning
D. Regulating
DOUBLE
A frog species dies out, and scientists want to know why. They conduct water quality tests and find that the dissolved oxygen levels are very low. What is the frog species in this scenario?
An indicator species
GO AGAIN
1.Write down all the following characteristics which describe PRIMARY succession: faster than secondary succession, begins with bare rock, has pioneer species like lichen and moss, starts after a fire or flood, never reaches a climax community
begins with bare rock
has pioneer species like lichen and moss