All 2020 HELCOM events are published here (see menu to the left).
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- Baltic Sea trends
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- Environment Fact Sheets
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- Biodiversity
- Abundance and Distribution of Marenzelleria Species
- Abundance and Distribution of Round Goby
- Abundance and Distribution of the Zebra Mussel
- Biopollution Level Index
- Observed Non-Indegenous and Cryptogenic Species in the Baltic Sea
- Population Development of Great Cormorant
- Population Development of Sandwich Tern
- Population Development of Southern Dunlin
- Population Development of White-Tailed Sea Eagle
- Eutrophication
- Waterborne nitrogen and phosphorous inputs and water flow to the Baltic Sea 1995-2017
- Unusual Phytoplankton Event
- Bacterioplankton Growth
- Chlorophyll-A Concentrations, Temporal Variations and Regional Differences from Satellite Remote Sensing
- Cyanobacteria Biomass, 1990-2018
- Cyanobacteria Bloom Index
- Cyanobacterial Blooms in the Baltic Sea
- Impacts of Invasive Phytoplankton Species
- Atmospheric Nitrogen Depositions to the Sea
- Nitrogen Emissions to the Air in the Baltic Sea
- Phytoplankton Community Composition
- Shifts in the Summer Phytoplankton Communities in 1992-2006
- Spatial Distribution of the Winter Nutrient Pool
- Hazardous Substances
- Depositing of Dredged Material in the Baltic Sea in 2017
- Atmospheric Deposition of Benzo(a)pyrene
- Atmospheric Deposition of Heavy Metals
- Atmospheric Deposition of PCB-153
- Atmospheric Deposition of PCDD/FS
- Atmospheric Emissions of Benzo(a)pyrene
- Atmospheric Emissions of Heavy Metals
- Atmospheric Emissions of PCB-153 in the Baltic Sea Region
- Atmospheric Emissions of PCDD/FS
- Cesium-137 in Baltic Sea Sediments
- Contamints in Herring
- Illegal Discharges of Oil in the Baltic Sea
- Liquid Discharges of Radioactive Substances
- Heavy Metals in Water
- Hydrography
- Maritime Activities
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- Pollution Load Compilations
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- Monitoring Manual
- Benthic Community Species Distribution and Abundance
- Benthic Physical Loss and Damage
- Biological Effects of Contaminants
- Birds
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- Fish, Fisheries and Shellfish
- Hydrochemistry
- Hydrography
- Inputs
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