action/assessments species are a lower priority for priority for management action Cons: is not an estimate of stock status management action and frequent relative to species assessment with higher vulnerability estimates (>2.0 PSA score) FISHED: UNFISHED DENSITY RATIO (FOR KEY TARGET SPECIES) Fish and invertebrates that Pros: a relative quick and cheap way to Fished:unfished Fished:unfished are habitat assess the status of target species. density of target density of target Density Ratio associated, not a species > 0.6 species < 0.4 good indicator for Cons: assumes that a fully-functioning highly mobile and well-enforced NTZ has been sited targets appropriately with representative habitat, not useful for highly mobile targets. FISHED: UNFISHED BIOMASS Underwater RATIO (CORAL REEF THRESHOLD Visual Surveys AGGREGATED ACROSS SPECIES) Pros: provides an estimate of ecosystem status and capacity to support fishing, useful for setting precautionary Coral Reef Multi-species management to meet EBFM goals. Fished:unfished Fished:unfished Thresholds finfish fishery biomass ratio > 0.5 biomass ratio < 0.25 Cons: assumes that a fully-functioning and well-enforced NTZ has been sited appropriately with representative habitat, not useful for highly mobile targets. Assumes NTZ are representative of historical, unfished biomass.
action/assessments Cons: is not an estimate of stock status species are a lower priority for management action relative to species with higher vulnerability estimates (>2.0 PSA score) priority for management action and frequent assessment Underwater Visual Surveys FISHED: UNFISHED DENSITY RATIO (FOR KEY TARGET SPECIES) Pros: a relative quick and cheap way to assess the status of target species. Cons: assumes that a fully-functioning and well-enforced NTZ has been sited appropriately with representative habitat, not useful for highly mobile targets. Fished:unfished density of target species > 0.6 Fished:unfished density of target species < 0.4 Density Ratio Fish and invertebrates that are habitat associated, not a good indicator for highly mobile targets FISHED: UNFISHED BIOMASS RATIO (CORAL REEF THRESHOLD AGGREGATED ACROSS SPECIES) Pros: provides an estimate of ecosystem status and capacity to support fishing, useful for setting precautionary management to meet EBFM goals. Cons: assumes that a fully-functioning and well-enforced NTZ has been sited appropriately with representative habitat, not useful for highly mobile targets. Assumes NTZ are representative of historical, unfished biomass. Fished:unfished biomass ratio > 0.5 Fished:unfished biomass ratio < 0.25 Coral Reef Thresholds Multi-species finfish fishery
Guidance%20for%20PIs%20RPs%20and%20HCRs_1.docx