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Stock assessment method: CMSY
By Jessika WoroniakAt Quantitative‐Aquatics May 30th 2019
General overview:
1. Brief description of the CMSY method
2. CMSY project ‐ what has been done
3. CMSY project ‐ what we are doing nowImproving the analysesBuilding a database for Relative Biomass
4. CMSY on the web
5. Global Fishing Index
CMSY – Catch Maximum Sustainable Yield
CMSY toolINPUTS OUTPUTS
• Catch timeseries• Resilience• (Stock health indicator)
Fisheries management data•msy•rmax•k•Stock biomass•Exploitation rate
Lethrinus miniatus
Trumpet emperoron the Great Barrier Reef
MEs: Torres Strait Northern Great Barrier Reef & Central and Southern Great Barrier Reef & Coral Sea
CMSY – Catch Maximum Sustainable Yield
CMSY toolINPUTS OUTPUTS
• Catch timeseries• Resilience
Fisheries management data•msy•rmax•k•Stock biomass•Exploitation rate
• (Stock health indicator)
Indication of relative biomass:CPUEBiomassSpawning stock biomassB/Bmsy or B/k…
Lethrinus miniatus
Trumpet emperoron the Great Barrier Reef
MEs: Torres Strait Northern Great Barrier Reef & Central and Southern Great Barrier Reef & Coral Sea
2. What has been done.
Marine Ecoregions of the world (MEOW or ME)
232 MEs218 Countries
Marine Ecoregions of the world (MEOW or ME)
EEZ ME
1320 Stocks
483 Species
Palomares et al. (2018) A preliminary global assessment of the status of exploited marine fish and invertebrate populations
Palomares et al. (In press) Biomass time series trends of fish populations in marine ecoregions, climatic zones and ocean basins
Palomares et al. (In review) Biomass time series trends of fish populations in marine ecoregions, climatic zones and ocean basins
3. What we are doing now.
Improving our results by including external data
&Building a relative biomass database
4. CMSY results on the website
CMSY results on the website
BiomassCatchExploitation rateAll
CMSY results on the website
5. Global Fishing Index (GFI)Project in partnership with the Minderoo FoundationFlourishing Oceans umbrella:
“A flourishing ocean is one that can withstand a changing climate and increasing human pressures. It’s healthy, resilient, free from pollution
with a plentiful biomass of fished species.Our key objective is to return our oceans to a flourishing state by eliminating overfishing and marine pollution and facilitating world
class research.”
Thank you