Mapping of boulder fields in the Iroise marine natural park (2010)

The term "boulder fields" covers areas of boulders of the lowest levels of the foreshore which are uncovered during low tides. They are not really part of the mediolittoral (intertidal zone) but what is now defined as the fringe tip (or emerging or upper part) of the infralittoral. More generally, boulder fields, formed by the fragmentation of the rocks in place, are located at the foot of rocky cliffs or between rocky headlands and flats. They are only accessible on foot during tidal coefficients greater than or equal to 95.

Boulder fields naturally harbor a high biodiversity due to their position at the bottom of the foreshore, but the wealth of fauna and flora also depends greatly on the type of architectural habitat. Three broad categories of boulder fields are distinguished: Sediment blocks, blocks of bedrock and blocks on blocks.

 

Simple

Identification info

Date (Creation)
2010-01-01
Date (Publication)
2010-01-01
Citation identifier
PN_ATL_LEMAR_Carte_blocs_PNMI_pol_wgs84.shp

Credit

LEMAR – IUEM (UBO)

Point of contact
Organisation Individual Electronic mail address ORCID Role

LEMAR – IUEM (UBO)

Christian Hily

christian.hily@univ-brest.fr

 Originator
Spatial representation type
Vector
Topic category
  • Biota

Extent

N
S
E
W


Thèmes Sextant

  • /Biological Environment/Habitats

Theme

  • Boulder field, biocenosis, hard bottom mediolittoral

Place

  • marine natural park

  • Iroise Sea

GEMET - INSPIRE themes, version 1.0

  • Habitats and biotopes

Sous-regions marines

  • Celtic Seas

Resource constraints

Access constraints
Other restrictions
Use constraints
Copyright
Other constraints

Obligation de Citation : Lejart M., Larzillière A., Hily C. (2010). Etude des herbiers et des champs de blocs du Parc naturel marin d’Iroise: cartographie et caractérisation de l’état de conservation. 184pp.

Resource constraints

Classification
Unclassified
Language
Français
Character encoding
UTF8
Supplemental Information

Type of habitat:

Natura 2000 : 1170 (1170_9).

EUNIS (2004) : A1.2142

REBENT (2008): P14

Distribution Information

Distribution format

  • Shape ESRI

OnLine resource

site internet Ifremer dédié à la Directive Cadre Stratégie pour le Milieu Marin

The Ifremer website dedicated to the Marine Strategy Framework Directive

OnLine resource

carthothèque DCSMM

Hard bottom biocenosis of mediolittoral

OnLine resource

PN_ATL_LEMAR_Carte_blocs_PNMI_pol_wgs84

boulder fields

Resource lineage

Lineage

Lejart M., Larzillière A., Hily C. (2010). Etude des herbiers et des champs de blocs du Parc naturel marin d’Iroise: cartographie et caractérisation de l’état de conservation. 184pp.

Hierarchy level
Dataset

Reference System Information

Reference system identifier
EPSG/WGS84 géographiques

Portrayal catalogue info

Title

Lejart M., Larzillière A., Hily C. (2010). Etude des herbiers et des champs de blocs du Parc naturel marin d’Iroise: cartographie et caractérisation de l’état de conservation. 184pp.

Date (Publication)
2010-01-01

Metadata constraints

Classification
Unclassified

Metadata

Metadata identifier
cdfeeebc-c108-4615-81dd-52c484148f82

Language
Français
Character encoding
UTF8
Language
English
Character encoding
UTF8
Contact
Organisation Individual Electronic mail address ORCID Role

Ifremer Brest - Geosciences Marines

Etienne Laffay

gmcarto@ifremer.fr

 Point of contact

Type of resource

Resource type
Dataset
Name

Jeu de données

Metadata linkage

https://sextant.ifremer.fr/geonetwork/srv/api/records/cdfeeebc-c108-4615-81dd-52c484148f82

Date info (Creation)
2011-11-21T15:00:24Z
Date info (Revision)
2025-05-16T00:11:41.635444Z

Metadata standard

Title

ISO 19115-3 - SEXTANT

Edition

1.0

 
 

accessData

 

Overviews

Overview

Spatial extent

Keywords

Boulder field, biocenosis, hard bottom mediolittoral
GEMET - INSPIRE themes, version 1.0
Habitats and biotopes
Thèmes Sextant
/Biological Environment/Habitats