Unit 3.2

Question 1

What is the definition of Ecological Succession?

Answer 1

The transition in species composition over time

Question 2

What is the definition of Primary Succession?

Answer 2

When the first pioneers for the population come into the area and begin to populate.

Question 3

What is the definition of Secondary Succession?

Answer 3

When an even wipes out the population and the organisms have to regrow.

Question 4

What is the definition of Pioneer Species?

Answer 4

The first colonizers in the barren area who help to create the first layer of soil.

Question 5

What is the definition of Seral Stages?

Answer 5

These are the different stages of how the ecosystem grows and developed from the barren rock.

Question 6

What is the definition of Climax Community?

Answer 6

This is when the community reaches its fullest, richess capacity.

Question 7

What is the definition of Species Richness?

Answer 7

This is the number of species found in the given area.

Question 8

What is the definition of Species Evenness?

Answer 8

This is a measure of how similar the abundance of different species are.

Question 9

What is the definition of Genetic Diversity?

Answer 9

This is the diversity in a community based off genetics and relates to the population size.

Question 10

What is the definition of Ecological Diversity?

Answer 10

This is the range of habitat types and variation within and ecosystem. Greater diversity = Greater stability

Question 11

What is the definition of Keystone species?

Answer 11

These species are specifically crucial to the ecosystem and development of the area.

Question 12

What is the definition of Invasive species?

Answer 12

These are species that are overwhelmingly abundant in the area and are taking over other species and pushing them out of their natural habitat.

Question 13

What is the difference between primary and secondary secession?

Answer 13

The main difference is the primary doesn’t have much to start off with besides rock, while secondary on the other hand already has all the nutrients there and can grow a lot quicker.

Question 14

How do keystone species and invasive species affect biodiversity?

Answer 14

If there are many different keystone species, then the population will grow a lot and will have a wide variety of animals. If there are a lot of invasive species on the other hand, then they will take over and there will be very little biodiversity in the area.

Question 15

If you have these numbers for the biodiversity, what is the diversity index? 0.01, 0.03, 0.08, 0.05

Answer 15

H = 0.17

Question 16

If you have these numbers for the biodiversity, what is the diversity index? 0.37, 0.08, 0.37, 0.27, 0.3

Answer 16

H = 1.39

Question 17

If Group A has an evenness of 0.34 and Group B has an evenness of 0.86 what can we conclude?

Answer 17

Group B is more spread out and has a higher diversity than group A.

Question 18

If Group A has a richness of 10 and Group B has a richness of 3 what can we conclude?

Answer 18

Group A has a lot more species than Group B. This means group A probably has a higher biodiversity than group B

Question 19

If Group A has an H value of 1.6 and Group B has an H value of 0.17 what can we conclude?

Answer 19

Group A has a lot more biodiversity than group B.

Question 20

Is the following an example of primary or secondary succession? Melting, receding glaciers

Answer 20

Primary

Question 21

Is the following an example of primary or secondary succession? Logging a wooded area

Answer 21

Secondary

Question 22

Is the following an example of primary or secondary succession? Major flooding of a creek bed.

Answer 22

Secondary

Question 23

Is the following an example of primary or secondary succession? Volcanic eruption with lava flow.

Answer 23

Primary