Fisheries Science

Question 1

Fedor Baranov

Answer 1

1918
Catch equation
No relationship to sustainability, just how much mortality you want

Question 2

MSY

Answer 2

Original rule of fishery management
Maximum sustainable yield is when commercial harvest reduces stock to 50% biomass. Based on logistic growth curve
Can also calculate as r*N

Question 3

Beverton-Holt Model

Answer 3

Looked at yield per recruit
Came to the same conclusion as MSY
50%

Question 4

Gulland

Answer 4

Statistician that calculted the maximum yield based on the fishing quota and mortality
Suggested maximum sustainable yield was 50%

Question 5

Virtual Population Analysis

Answer 5

infer or back-calculate population size
pre-exploited biomass is not required