0.5 Proportional Harvest Another possible approach to harvesting the cod would be to harvest an amount proportional to the existing fish population. This is called the proportional harvesting model and includes a constant a that is between 0 and 1 where 1 represents harvesting 100% of the fish. Consider our example r = 1 and K = 1600. dP P =rP 1 - dt K B³) - a -αP (a) Use a slope field plotter and experiment with varying a between 0 and 1. Can you find any value a <1 that causes the fish population to become extinct? If so, what is that value? Upload one graph for a particular value of a. (b) Would you recommend that Wildlife Management Agencies use the Constant Harvest Model or the Proportional Harvest Model if their goal is a long term sustainable fishery? Explain your reasoning.

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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0.5
Proportional Harvest
Another possible approach to harvesting the cod would be to harvest an amount proportional
to the existing fish population. This is called the proportional harvesting model and includes
a constant a that is between 0 and 1 where 1 represents harvesting 100% of the fish. Consider
our example r = 1 and K = 1600.
dP
P
=rP
1 -
dt
K
B³) - a
-αP
(a) Use a slope field plotter and experiment with varying a between 0 and 1. Can you find
any value a <1 that causes the fish population to become extinct? If so, what is that
value? Upload one graph for a particular value of a.
(b) Would you recommend that Wildlife Management Agencies use the Constant Harvest
Model or the Proportional Harvest Model if their goal is a long term sustainable fishery?
Explain your reasoning.
Transcribed Image Text:0.5 Proportional Harvest Another possible approach to harvesting the cod would be to harvest an amount proportional to the existing fish population. This is called the proportional harvesting model and includes a constant a that is between 0 and 1 where 1 represents harvesting 100% of the fish. Consider our example r = 1 and K = 1600. dP P =rP 1 - dt K B³) - a -αP (a) Use a slope field plotter and experiment with varying a between 0 and 1. Can you find any value a <1 that causes the fish population to become extinct? If so, what is that value? Upload one graph for a particular value of a. (b) Would you recommend that Wildlife Management Agencies use the Constant Harvest Model or the Proportional Harvest Model if their goal is a long term sustainable fishery? Explain your reasoning.
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