Chapter 11

Question 1

community structure

Answer 1

1. species richness
2. species abundance
3. trophic level
4. food web
5. species interactions

Question 2

aspects of distribution

Answer 2

1. frequency
2. intensity
3. spatial distribution
4. area
5. return interval
6. predictability

Question 3

natural flow regime

Answer 3

ensures the ecological integrity of a stream ecosystem

1. magnitude
2. frequency
3. duration
4. timing
5. rate of rise and fall

Question 4

magnitude

Answer 4

volume of water passing a point in time

Question 5

frequency

Answer 5

how often a particular magnitude occurs

Question 6

species area relationship

Answer 6

S=CA^Z
c=constant
Z=slope, extinction coefficient

Question 7

community

Answer 7

assemblage of populations of different species living close enough for species interactions

1. physical interactions
2. species interactions
3. chance

Question 8

ecological integrity

Answer 8

capacity to support and maintain a biological system having a full range of elements and processes expected in the natural habitat of a region

Question 9

aspects of disturbance

Answer 9

1. spatial distribution
2. frequency
3. return interval
4. area
5. predictability
6. intensity

Question 10

non-equilibrium view of rivers

Answer 10

dynamic equilibrium model: a non equilibrium view of disturbance and its relationship to competition as a determinant of species diversity

Question 11

impact of disturbance depends on:

Answer 11

1. resistance: ability to withstand disturbance

2. resilience: ability to recover from a disturbance