Premium
Effects of Reduced Fishing for Feeding Salmon ( Salmo salar L.) in the Baltic on Home Water Fisheries according to Simulations with the Carlin‐Larsson Population Model
Author(s) -
Larsson P.O.
Publication year - 1984
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1984.tb00840.x
Subject(s) - fishery , fishing , salmo , submarine pipeline , population , baltic sea , biology , mean value , fish <actinopterygii> , oceanography , statistics , mathematics , demography , sociology , geology
The Carlin‐Larsson population model of Baltic salmon was used to simulate reduced effort in an offshore fishery for feeding salmon and its effect on home water fisheries. Some simplifying assumptions had to be made; no changes in seasonal mean weight or exploitation rate in the home water fisheries were assumed. With a simulated termination of the offshore fishery, seasonal mean weights from the time before the excessive offshore fishery started were also applied to give a maximum effect on the catches. The total non‐catch fishing mortality in the offshore fishery was estimated at 5% per season (total M = 10% per season). A total ban on the offshore fishery would mean a sixfold increase in catch‐value for home water fisheries and a total value twice that in the present situation with the present seasonal mean weights. With the higher mean weights the simulated catch would be 87% and its value 182% higher than at present.