5) In general, overfishing of blue crabs would be expected to result in ________

ID: 48585 • Letter: 5

Question

5) In general, overfishing of blue crabs would be expected to result in __________ percent Spartina cover?

a) increased

b) decreased

c) no change in

d) more variable

6) What biological mechanisms might produce the observed pattern?

a) decrease in predation on snails

b) increase in herbivory on Spartina

c) decrease in predation on snails followed by a increase in herbivory on Spartina

d) increase in predation on snails followed by a decrease in herbivory on Spartina

80 Mid-Atlantic Salt Marshes 9 60 40- 20 0 0 20 100 40 60 80 Percent mud cover

b , decreased because it will lead to more growth in population of blue crab which feed by grazing. so the population of spartine will decrease

6) answer is c as described because they feed on grass by grazing

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