Title

Distribution and installation dynamics of Undaria pinnatifida, a non-indigenous species of algae in Brittany (Ecokelp ANR 2007-2009 and Interreg IVA Marinexus Programmes 2010-2014)

Date (Creation)

2007-01-01T00:00:00

Citation identifier

FR-DCSMM-PDS-WAKAME

Presentation form

Digital profile

Abstract

Undaria pinnatifida, brown micro-algae also known as wakame, was deliberately introduced in Brittany to be grown as a crop, and started to grow wild at the end of the 1980s. Two programmes, Ecokelp (2007-2009) and Marinexus (2010-2014) focus on the dynamics of the distribution of this algae which is not native to Brittany. ECOKELP aimed to better understand the dynamics of micro-algae forests, and Undaria pinnatifida was one of the project’s target species. MARINEXUS aimed to study marine ecosystems trans-channel, and a “workpackage” was dedicated to non-indigenous species, including Undaria pinnatifida. Both of these projects aimed to create an inventory of the presence of Undaria pinnatifida in artificial habitats (ports, marinas, etc.) and natural settings along the Breton coast, by surveying and then comparing data with the literature. Specific focus was on the bay around Mont Saint-Michel, Lampaul (Ushant), l’Aber Wrac’h and Morlaix bay. Observations, micro-mapping, and genetic analyses were conducted during the programmes. A PhD thesis (Daphné Grulois – UPMC ; dir. F. Viard – Station Biologique de Roscoff; contact : viard@sb-roscoff.fr) brings together and summarises the data, observations, inventories and maps created throughout the Ecokelp programme. It is available at: http://www.sb-roscoff.fr/images/stories/sbr/Edition- communication/theses/Grulois_thesis.pdf

Credit

Data producers : biologic station of Roscoff – CNRS/UPMC

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Station biologique de Roscoff	Viard Frederique	viard@sb-roscoff.fr	Local service desk

Maintenance and update frequency

Not planned

Maintenance note

Network duration : perennial network

Theme

• Undaria pinnatifida

• Brown algae

• Pleasure port

• Rocky habitat

• Observations

• Inventory

• Non-indigenous species

GEMET - INSPIRE themes, version 1.0

• Environmental monitoring facilities

Sous-regions marines

• Channel-North Sea

DCSMM : Type d'espace concerné

• Site Natura 2000

DCSMM : Descripteurs

• D1: Coastal benthic habitats

Thèmes Sextant

• /Biological Environment/Habitats

Access constraints

Other restrictions

Other legal constraints

Access conditions : restricted

Use limitation

Data available on request on the condition that all sources and authors are referenced. Map data already transmitted within the context of DCSMM’s data collection (Ifremer – MNHN) Concarneau

Spatial representation type

Vector

Denominator

500000

Language

Français

Character set

UTF8

Topic category

• Biota

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 7.9

Topology level

Geometry only

Geometric object type

Complex

Geometric object count

0

Distribution format

Name	Version

Hierarchy level

Dataset

Statement

2008 : Inventory detailing the presence/absence of Undaria pinnatifida in l’Aber Wrac’h – Stability of populations despite the fact that they had ceased to be cultivated.

2009 : Inventory detailing the presence/absence of Undaria pinnatifida in St-Malo Bay (80% of the site visited showed presence of the algae)-

2009 : Inventory detailing the presence/absence of Undaria pinnatifida - Ouessant – Lampaul Bay – The algae had spread compared with previous inventory data

2008 to 2012 : Inventory detailing the presence/absence of Undaria pinnatifida in – Morlaix Bay – The algae had spread compared with previous inventory data – Temporal fluctuation (annual) depending on the site

Number of observation or measurement points : 50 sites Observations made by diving in natural sites (sub-tidal rocky environment).

Observations made by trained and qualified personnel (no post-observation validation required). Nevertheless, samples (tissue) were obtained for each site and genetic population studies conducted, thus validating observations in the field.

Description

Data type :

Flora : Undaria pinnatifida

Precision on the data type :

Observation of presence of the species (geolocated site)

Measured or observed parameters :

Presence/Absence

Individual length (not for all sites)

Description

Sampling method :

Spatial

Description

Taxonomic reference : WoRMS

Source

Metadata

File identifier

b20f2db0-4e07-4bea-b19a-9e712c0c1531

Metadata language

Français

Other language

Language	Character encoding
English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2020-06-04T00:54:35

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Sextant		sextant@ifremer.fr	Local service desk