Restoring Predatory Fish Populations in Stockholm’s Outer Archipelago

In recent decades, predatory fish populations have been declining in large areas of Stockholm’s outer archipelago. This alarming trend necessitates immediate action and an increase in knowledge regarding restoration measures and their effects on the ecosystem.
Overview of Restoration Efforts
A comprehensive report outlines the background and knowledge related to restoration attempts in Stockholm’s outer archipelago. This effort is part of a larger initiative aimed at revitalizing the marine life of the Baltic Sea.
Project Initiation and Funding
The restoration project, named Gäddhäng, was initiated by the Stockholm County Administrative Board in 2019. Funding was provided by the Postcode Lottery, forming part of the overarching project “Restoring the Vitality of the Baltic Sea,” which runs from 2020 to 2024 under the guidance of the World Wildlife Fund (WWF).
Importance of Predatory Fish
Predatory fish play a crucial role in maintaining the health of marine ecosystems. Their decline can lead to imbalances that affect other species and the overall environment.
Goals of the Restoration Project
- Assess current fish populations in the outer archipelago.
- Implement effective restoration strategies.
- Enhance understanding of ecosystem responses to these interventions.
By focusing on these goals, the project aims to promote the recovery of predatory fish populations and improve the ecological balance of Stockholm’s waters.
Long-Term Vision
The success of the Gäddhäng project is vital for the sustainable management of Stockholm’s marine environments. Continued research and adaptive strategies will be essential for the restoration of predatory fish populations in the outer archipelago.



