|
Stage 2:
(Over-exploited - early) high fishing mortality and high
abundance. This state is expected only during the early
stages of over-exploitation because stable combinations of
fishing mortality rate and abundance do not exist in this
quadrant. It represents a transient stage in an
over-exploited fishery and indicates a decline in abundance
is expected if mortality remains high.
Stage 3:
(Over-exploited - late) high fishing mortality and low
abundance. This state indicates that the lake is being
over-exploited and the expected decline in fish abundance
has occurred.
Stage 4:
(Degraded, recovering) low fishing mortality and low
abundance. This stage indicates that the stock was probably
over-exploited in the past. Stable (i.e. equilibrium)
combinations of abundance and mortality are not expected in
this quadrant. |
