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partial strategy to manage main retained
species. c Sufficient data
continue to be collected to detect any increase in
risk level e.g. due to changes in the outcome
indicator scores or the operation of the fishery
or the effectiveness of the strategy.
2.2 By-catch Species – i.e. non-commercial speciesdiscards
a Main by-catch species are highly likely to be
within biologically based limits or if outside such
limits there is a partial strategy of demonstrably
effective mitigation measures in place such
that the fishery does not hinder recovery and
rebuilding. Because of the selectivity of gear there are no non commercial by-
catches. Fishing takes place over sandy bottoms. However, because seagrass beds are known crab feeding grounds, there may some habitat
interactions over seagrass beds. There is no fishery independent data to illustrate whether this is or is not the case.
a There is a partial strategy in place for
managing by-catch that is expected to achieve
the by-catch outcome 80 level of performance or
above. b There is some
objective basis for confidence that the
partial strategy will work, based on some
information directly about the fishery andor
the species involved. c There is some
evidence that the partial strategy is being
implemented successfully.
Not relevant
a Information is No information available.
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sufficient to qualitatively if risk is shown to be
medium as defined in the SG80 outcome indicator
or quantitatively estimate outcome status
with respect to biologically based limits.
b Information is adequate to support a
partial strategy to manage main affected
species. c Sufficient data
continue to be collected to detect any increase in
risk level e.g. due to changes in the outcome
indicator scores or the operation of the fishery
or the effectiveness of the strategy.
2.3 Endangered, Threatened and Protected Species
a The effects of the fishery are known and
are highly likely to be within limits of national
and international requirements for
protection of ETP species.
b Direct effects are highly unlikely to create
unacceptable impacts to ETP species.
c Indirect effects have been considered and are
thought to be unlikely to create unacceptable
impacts. The indications are unclear as to whether there is interaction with turtles
or dugongs and there is no fishery independent information to gauge the levels of interaction. It is also possible that historic interactions may
have been higher than they are now. The fishery takes place close to Green and hawksbill turtle nesting sites. The increased displacement of
gear, allied to the fact that hawksbill turtles are known to feed on crab, especially immediately after moulting Kailola et al., 1993, suggests
that there are some risks of entanglement. This will need to be independently investigated before any full assessment.
Dugongs, though highly vulnerable within Vietnam, remain within the inshore zones and the MPA is believed to be respected by fishers.
a There is a strategy in place for managing the
fishery’s impact on ETP species, including
measures to minimise mortality and injury that
Two MPAs represent a partial strategy. It is unclear if this is sufficient for the protection of turtle nesting sites.
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is designed to achieve the ETP outcome 80
level of performance or above.
b There is an objective basis for confidence that
the strategy will work, based on some
information directly about the fishery andor
the species involved. c There is evidence that
the strategy is being implemented
successfully.
a Information is sufficient to determine
whether the fishery may be a threat to recovery of
the ETP species, and if so, to measure trends and
support a full strategy to manage impacts.
b Sufficient data are available to allow
mortality and the impact of fishing to be
quantitatively estimated for ETP species.
There is limited knowledge on the levels of interactions. Indications are that the encounters are infrequent, but there is no great certainly in the
quality of the information received. This will require more information prior to full assessment.
2.4 Habitat
