Ecosystem-based management of coastal fish Magnus Appelberg Swedish Board of Fisheries HELCOM FISH
Ecosystem-based management of coastal fish
Magnus AppelbergSwedish Board of FisheriesHELCOM FISH
Institute of Coastal Research
The ecosystem approacha strategy for integrated
management for sustainable use of natural recourses
recognizes humans as an integral component of ecosystems
presumes that management should be adaptive to ecosystem change
Ecosystem approach
Institute of Coastal Research
Why ecosystem based fish management in coastal areasanalytical assessments not applicable
need for alternative methods
area specific reference points
habitat variationlocal stocks/geneticdifferentiation
adaptive managementsustainable fisheriesenvironmental impact stakeholder involvement
Ecosystem approach
Gädda
8 områden, ~ 4-60
Pike stock distribution
Institute of Coastal Research
HELCOM FISH projectSet of indicators and reference values (directions) applicable to assess status of coastal fish Evaluation and recommendations of the use of indicators in assessments of coastal fish Thematic assessments based on indicators, information necessary for identifying potential restoration programmes Revision of the HELCOM Red List of threatened and declining species
Ecosystem approach
Institute of Coastal Research
Way forwardSpatial planning
Assessment methods and data collection
Reference points and management objectives
Methodology for forecasting
Stakeholder involvement
Adaptive management plans
Ecosystem approach Way forward
Institute of Coastal Research
Spatial planningPrerequisite for implementing plans and actions Spatial data used to:
identify land and water useidentify sensitive areas (eg.
spawning and nursery areas and home range areas of red-listed species).
estimate potential production (modeling approach)
Ecosystem approach Way forward
Institute of Coastal Research
Assessment and data collection
assessment of populations and community status
reliable (biological and statistical) and simple, assessment tools
relations between pressure and status indicators
simple theoretical framework based on Pressure-State-Response
Ecosystem approach Way forward
Institute of Coastal Research
Reference points and objectives
reliable area specific reference points (directions)
lack of historical data= a lack of reference points
reference points/directions inferred from ecological changes
changes in ecological state indicators inferred from changes in pressure indicators
use of a modeling approach
Ecosystem approach Way forward
Institute of Coastal Research
Methodology for forecastingassessment results and reference directions used
to predict future changes present modeling and forecast techniques not yet
sufficient for precise predictionsneed for further research
Ecosystem approach Way forward
GIS-derived visibility proxy GIS-derived wave exposure Depth
Prediction of pike recruitment vs environmental variables
Institute of Coastal Research
Stakeholder involvementStakeholder involvement necessary:- for defining management areas - setting area specific objectives- performing actions and follow-up- being a responsible part of the process
Ecosystem approach Way forward
Institute of Coastal Research
Adaptive management plans
Ecosystem approach Way forward
Plans
Actions
Follow-up
Assessment
Adjustment of plans (and objectives
Objectives
Climateforcing
Eutrophication
Habitat degradation
Institute of Coastal Research
Examples of management of coastal fishTemporal closures of recruitment areas in the Stockholm Archipelago
Restoration of spawning habitats in coastal freshwaters
Pikeperch stocking for mediating effects of eutrophication
Ecosystem approach Way forward Examples
Institute of Coastal Research
Temporal closures of recruitment areas in the Stockholm Archipelago
Objective: Increase recruitment success of coastal fish species- joint initiative among stakeholders-temporally closure of 17 recruitment areas- GIS-modeling for selecting areas-effect studies ongoing
Ecosystem approach Way forward Examples
Institute of Coastal Research
Restoration of spawning habitats in coastal freshwatersObjective:Restore spawning habitats of coastal fish- Joint initiative among stakeholders- development of methods for reestablishment of coastal predators- actions both in freshwaters and coastal areas
Ecosystem approach Way forward Examples
Foto Hans Hästbacka & Janne Widjeskog
Institute of Coastal Research
Pikeperch stocking for mediating effects of eutrophicationObjectiveRestore the food web structure in an eutrophied bay through pikeperch stocking- fishery action integrated with changes in nutrient loads- scientific initiative with stakeholder involvement- outcome beneficial both for environment and fisheries
Ecosystem approach Way forward Examples
Institute of Coastal Research
Suggested recommendationsSelect of a set of coastal pilot areas for spatial
studies and management
Analyse production estimates for the pilot areas based on habitat models
Develop biologically and statistically sound assessment and forecasting tools (including data collection and area specific reference points) for coastal fish communities (HELCOM FISH)
Ecosystem approach Way forward Examples Recommendations
Institute of Coastal Research
Establish an information database within HELCOM, open to the public
Involve relevant stakeholders in the pilot areas for setting common objectives for managers to suggest actions
Elaborate management strategies based on an adaptive approach
Ecosystem approach Way forward Examples Recommendations