• HELCOM Metadata catalogue
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Grey seal distribution

This map shows the distribution and abundance of grey seals across the Baltic Sea.


The map was originally created for HELCOM Red list assessment of the Baltic Sea, using seal expert consultation. For the Baltic Sea Impact Index, the map was modified to represent four abundance classes, based on expert consultation.


The map has been updated from the 1st version of HOLASII, based on expert consultation (HELCOM Seal EG).

Simple

Date (Creation)
2018
Unique resource identifier
https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/435ebf86-16e0-4bac-aac9-6055699d56a2
pointOfContact
  HELCOM Secretariat

GEMET - INSPIRE themes, version 1.0

  • Species distribution

GEMET

  • marine mammal

  • marine ecology

Keywords
  • MADS

  • HOLAS2

  • ecosystem component

Use constraints
Other restrictions
Other constraints

Use constraints: Data can be used freely given that the source is cited as "HELCOM HOLAS II Dataset: Grey seal distribution (2018)".

Access constraints
Other restrictions
Other constraints
Access constraints: No limitations on public access.
Spatial representation type
Grid
Metadata language
English
Topic category
  • Environment
  • Biota
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S
E
W
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Begin date
2011-01-01
End date
2016-12-31
Unique resource identifier
EPSG:3035
Distribution format
  • TIFF ( )

OnLine resource
Download dataset ( WWW:LINK-1.0-http--link )
OnLine resource
Open in Map Viewer ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Statement

Data source:

Species Information sheet related to HELCOM Red list assessment available at http://www.helcom.fi/Red%20List%20Species%20Information%20Sheet/HELCOM%20Red%20List%20Halichoerus%20grypus.pdf


Data quality:

The map is based on expert judgement and gives a rough estimate on the distribution of harbour seals in the Baltic Sea.


Attribute information:

Raster representing abundance class with following values


1 = Common occurrence and reproduction

0.75 = Regular occurrence, no regular reproduction

0.5 = Rare occurrence, no regular reproduction

0 = Very rare or no occurrence


The classes are defined as

Common occurrence and reproduction - The area covers the core moulting areas, which mostly are important breeding areas for the species as well.


Regular occurrence, no regular reproduction - Outside of the breeding and moulting seasons the species uses the area regularly for foraging and traveling, but no regular breeding occurs.


Rare occurrence, no regular reproduction - The species does not regularly use the area for foraging or traveling and no breeding occurs, but has on rare occasions been observed in the area.


Very rare or no occurrence - The breeding and moulting areas of the species are relatively far compared to the travelling behavior of the species, making random observations or any other sign of occurrence in this area very rare or non-existent.


Spatial resolution:

Baltic Sea sub-basins.


Time period and temporal resolution:

Original map produced in 2013. Revised for HOLASII in 2016-2017. Revised for the HOLASII update in 2017-2018.

File identifier
435ebf86-16e0-4bac-aac9-6055699d56a2 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-09-09T11:59:26
pointOfContact
  HELCOM Secretariat
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Species distribution

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Associated resources

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