Fall Creek, located in Cayuga and Tompkins counties, is a fishery for trout. Sup
ID: 206635 • Letter: F
Question
Fall Creek, located in Cayuga and Tompkins counties, is a fishery for trout. Suppose that the trout biological production function for the Fall Creek fishery is given by the equation F(X)=aX-bX-, where X is the biomass (in tons) of trout in the fishery, and a and b are biological parameters assumed to be constant and positive. Suppose that harvesting of this species is always equal to H tons per instant of time, where H is less than the maximum sustainable yield (MSY) 1. What is Xsy, the maximum sustainable yield (MSY) biomass? What is the maximum sustainable yield (MSY)? 2. What is the biological equilibrium of the fishery when there is no harvesting? 3. What is the bionomic equilibrium? Explain both in words and using a graph what happens to the fishery if the biomass level of the fishery starts from: 4. a. the biological equilibrium b. a biomass level less than XASYExplanation / Answer
Answer 1:-
Maximum sustainable yield (MSY):- It can be described as the largest average catch that can be captured from the natural resources. It can be said as the maximum yield from a natural resource through routine exploitation without long-term depletion in the stock. Thus, MSY provides a balance between small and big harvest.
Maximum sustainable yield biomass (XMSY) – It can be described as the biomass that can provide maximum sustainable yield of a fish stock. XMSY can be said as a population size of the catch that is necessary for the maximum sustainable yield.
Answer 2:-
In general, equilibrium is attained when the populations of organisms grow and replace themselves. The natural resource thus gets replenished at the same rate as it is exploited. This is true when harvesting is done at fisheries. Biological equilibrium at no harvest in the fishery is the equilibrium attained due to natural birth-death cycle of the population.
Answer 3:-
Bionomic equilibrium is said to be achieved when total revenue of harvesting equals the total cost of harvesting.
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