EUfishmeal is partner in the FMSY Project
Ecosystem Based FMSY Values in Fisheries Management
The FMSY-project investigating a more ecosystem based approach to estimation of the biological reference point Fmsy was finalized 1 May 2019 and the work has been published by the the Nordic Council of Ministers.
The main publication “Global fisheries catches can be increased after rebuilding of fish populations” is available for download click here
Three working group reports are also available:
Report of the 1st working group meeting on optimization of fishing pressure in the Northeast Atlantic, Copenhagen June 2017 – click here
Report of the 2nd working group meeting on optimization of fishing pressure in the Northeast Atlantic, Vancouver November 2017 – click here
Report of the 3rd working group meeting on optimization of fishing pressure in the Northeast Atlantic, Rhode Island March 2018 – click here
What is FMSY?
FMSY is a biological reference point for fisheries management. It is the fishing pressure that gives the maximum sustainable yield in the long term. In the past overfishing has been a common feature in most sea areas. Overfishing means that fishing pressure is higher than FMSY.
The objective of the FMSY project is to come up with FMSY values, which are based on ecosystem functioning, for each of ICES data rich fish stocks. These FMSY values can be applied directly by ICES in its routine fisheries advice. The aim is to bridge the gap between the science available and management.
Towards ECO-system Fmsy
The FMSY project propose a new set of Fmsy values for data rich stocks in the North Atlantic. They are without bias known to science and using the available science on ecosystem functioning …by way of:
- ”Bridging the gap” between science and scientific advice/management
- Bring multispecies and ecosystem science into Fmsy calculations
Basic ecosystem concepts:
- The production in an ecosystem is based on primary production.
- This production is moving up the food web.
- If fishing is too light:
- the fish stocks will be too large and burn too much production in metabolic maintenance (convert production to C02)
- production which could otherwise have been harvested as fish meat.
- If the fishing is too hard: the fish stocks will be too small and not produce enough juveniles.
The report “Global fisheries can be increased due to rebuilding of fish populations” summarizes the results of the project. The project results present an approach which is simple and scientifically sound and builds on existing stock assessment framework as well as removes known bias in current methodology. This approach includes density dependent growth, reproduction and cannibalism, and it is based on single-species stock assessments. The project found increasing scientific evidence that multispecies MSY in a marine ecosystem requires fishing higher trophic levels at higher rates than FMSY as the foregone catch from higher trophic levels is compensated greatly by increases in catches from lower trophic levels. The report concludes that managing the Northeast Atlantic fisheries using the new FMSY values will increase the sustainable catches by several million t per year compared with a management based on the current FMSY values.
Overlay with catch in Northeast Atlantic………