The dataset contains data from the HELCOM Pollution Load Compilation (PLC) data collection. The dataset covers the period from 2016-2020. Attribute specification and units code: site code name: Name of the fish farming company Country: Country id (DK = Denmark, FI = Finland, SE = Sweden) basin: Baltic Sea subbasin TP_16 - TP_20: Annual phosphorus loading in tonnes (T P / year) TN_16 - TN_20: Annual nitrogen loading in tonnes (T N / year) X: X coordinate point Y: Y coordinate point

Observations of Lutra lutra were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Lutra lutra has been placed to the Red List category of Near Threatened (NT) species.

Observations of Amphipholis squamata were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Amphipholis squamata has been placed to the Red List category of Data Deficient (DD) species. Dataset for download contains spatial grid of the Baltic Sea. Distribution of the species can be found in corresponding name column. Values are coded: 1 - Present before year 2000 or in 2000, 2 - Present after year 2000, 3 - Present both before and after year 2000.

The dataset contains the location of shellfish mariculture sites from EMODnet (https://www.emodnet-humanactivities.eu/search-results.php?dataname=Shellfish+Production). Data from HOLAS 2 was used to complement the dataset (https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/21efdecc-2fd7-4bfb-9832-68c995291bf7). Each point has the following attributes (where available): status (active, inactive, licensed) country owner name area name farm type (Mussels, Oysters, Mussels-Oysters, Clams, Specialised (other), Mixed (other)) production method (Beds, Long lines, Rafts, Saltwater closed (recirculation), Saltwater ponds, Saltwater tanks/raceways,Trestles or trays, Other) production stage (Grow out for human consumption, Hatchery, Nursery, Broodstock, Reproduction, Harvest, Other) purpose (Commercial, Research, Education, Display, Other) products detailed (English translation of the information provided on species grown or authorised in the source) point information (Polygon centroid, Original) depending on how the information is provided in the source (polygons or points) site_id distance to coast (meters) position from coastline (At sea, within the coastline) notes: indication of HOLAS 2 data

This dataset was collected by HELCOM Secretariat during the HELCOM MORE project and represents monitoring stations in the Baltic Sea. This dataset contains all nutrient stations in the Baltic Sea as reported to the HELCOM MORE project.

Observations of Crassula aquatica were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Crassula aquatica has been placed to the Red List category of Near Threatened (NT) species. Dataset for download contains spatial grid of the Baltic Sea. Distribution of the species can be found in corresponding name column. Values are coded: 0 = no observations 1 = present before year 1995 or in 1995 2 = present after year 1995 3 = present before and after year 1995

This dataset displays coastal fish monitoring areas as defined by HELCOM FISH-PRO group and stored in HELCOM Coastal fish database (COOL). Monitoring of coastal fish contains two geometry types: Monitoring points for pointwise locations, where CPUE is reported per point and monitoring areas where CPUE is reported per monitoring area (ICES subdivision or square).

Input of impulsive anthropogenic sound includes impulsive events from 2016-2021 • Seismic surveys (HELCOM-OSPAR Registry; national data call submissions as lines in the folder of data) • Explosions (HELCOM-OSPAR Registry) • Pile driving (HELCOM-OSPAR Registry) • Airguns (HELCOM-OSPAR Registry) For the different event types, numeric intensity value was used to represent the pressure as categorized in HELCOM-OSPAR Impulsive noise registry. All nationally reported seismic surveys were given intensity values “Very low” (0.25) - Very low (0.25) - Low (0.5) - Medium (0.75) - High (1) The impact distance has not been taken into account due to the different nature of separate datasets used for the pressure layer. We acknowledge that e.g. pile driving and airguns may impact up to 20 km from the source event. The spread of the sound wave depends on the sound frequency, water salinity, temperature and density.

This dataset represents the underlying data on core indicator Abundance of coastal fish key functional groups. The core indicator evaluates the abundance of selected functional groups of coastal fish in the Baltic Sea. Quantitative thresholds are used to evaluate if core indicators status is Good, Not good or Not assessed. As a rule, good status is achieved when the abundance of piscivores (i.e. fish that feed on other fish) is above a site-specific threshold value, and the abundance of cyprinids or mesopredators (i.e. mid trophic-level fish) is within an acceptable range for the specific site. The status of functional groups of coastal fish in the Baltic Sea has been evaluated by assessing the status of piscivores and cyprinids/mesopredators during the period 2011-2016. This dataset displays the result of the indicator in HELCOM Assessment Scale 3 (Division of the Baltic Sea into 17 sub-basins and further division into coastal and offshore areas). Attribute information: "COUNTRY" = Country code "DATAPROVID" = Data provider "AREANAME" = ICES area "ASSESSMENT" = Name of scale 3 HELCOM assessment unit "FUNC_GROUP" = Functional group "IND_VALUE" = Result value for the indicator "METHOD" = Catch method "GEARTYPE" = Gear type of catch "SEASONID" = Season Download and links

Summary This dataset was collected by HELCOM Secretariat during the HELCOM MORE project and represents monitoring stations in the Baltic Sea Description This dataset contains all shared nutrient stations in the Baltic Sea as reported to the HELCOM MORE project. It was collected and published at the beginning of 2013.The data came originally from the CORESET project. Contracting Parties were then asked to complete and check the info.