The data and resulting data products (tables, figures and maps) available on the indicator web pages can be used freely given that the source is cited. The indicator should be cited as following:
HELCOM (2018) Distribution of Baltic seals. HELCOM core indicator report. Online. [Date Viewed], [Web link].
Result: Distribution of Baltic seals - Ringed seal
Result: Distribution of Baltic seals - Grey seal
Data: Distribution of Baltic seals - Grey seal
Result: Distribution of Balti c seals - Harbour seal
Data: Distribution of Baltic seals - Harbour seal
The national survey data is compiled annually by the HELCOM Seal Expert Group. A regional database has been developed and is hosted at the HELCOM Secretariat. The new database will include detailed spatial information and is to be updated annually prior to HELCOM Seal Expert Group meetings. The database will be managed by the HELCOM Secretariat having responsibility for updating and storing data provided by the HELCOM Seal Expert Group.
Status assessments are to be accomplished by the Lead and co-Lead countries. The outcome of such assessments will be presented and discussed at future HELCOM Seal Expert Group meetings.
The first compilations for the database have been completed and an intermediate version of the seal database can be accessed. During 2015-2016 work continued to operationalize the database. Further metadata was included at a later stage.
The data collected and used in the indicator are based on national aerial surveys. The survey methodology is described in Galatius et al. (2014). This data covers only haul-out sites and not areas used e.g. as foraging grounds.