This dataset includes the data used in in the HELCOM/OSPAR Ballast Water Exemptions Decision Support Tool. This tool was developed in 2013 based on the overall IMO framework, the 21 Baltic and North-East Atlantic coastal states and the EU. It allows user to define 'low risk' routes, as well as other necessary steps in granting exemptions under regulation A-4 of the IMO Ballast Water Management Convention (BWMC)

Citation: HELCOM/OSPAR Joint Ballast Water Exemptions Decision Support Tool: https://maps.helcom.fi/website/RA_tool/ HELCOM and OSPAR, 2020

Published: September 17, 2025 at 08:38

URL: http://ipt.vliz.be/eurobis/resource?r=helcom_ospar_lithuania_ports_water_sampling

OSPAR Commission for the Protection of the Marine Environment of the North-East Atlantic
OSPAR Commission for the Protection of the Marine Environment of the North-East Atlantic

Helsinki Commission
Helsinki Commission

Flanders Marine Institute (VLIZ)
Flanders Marine Institute (VLIZ)

845

occurrence records

154

measurements and facts

taxa

species

Taxa

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	845		100.0%
maximumDepthInMeters	845		100.0%
minimumDepthInMeters	845		100.0%
scientificNameID		457	54.1%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag	Records
NO_DEPTH	845	100.0%
NO_MATCH	457	54.1%
ON_LAND	286	33.8%
NOT_MARINE	83	9.8%
MARINE_UNSURE	55	6.5%
NO_ACCEPTED_NAME	31	3.7%

HELCOM/OSPAR Lithuania ports water sampling

Taxa

Missing and invalid fields

Quality flags

Measurement types

DNA derived data