Crepidula Beds
Biotope description :
[C. fornicata] is common in this biotope though not as abundant as in the muddier estuarine biotope CreMed to which this is related. Anemones such as [Urticina felina] and [Alcyonium digitatum] and ascidians such as [Styela clava] are typically found in this biotope. Bryozoans such as [Flustra foliacea ]are also found along with polychaetes such as [Lanice conchilega]. Little information is available with regard the infauna of this biotope but given the nature of the sediment the infaunal communities are liable to resemble those in biotopes from the SCS habitat complex.
Biotope description :
[C. fornicata] is common in this biotope though not as abundant as in the muddier estuarine biotope CreMed to which this is related. Anemones such as [Urticina felina] and [Alcyonium digitatum] and ascidians such as [Styela clava] are typically found in this biotope. Bryozoans such as [Flustra foliacea ]are also found along with polychaetes such as [Lanice conchilega]. Little information is available with regard the infauna of this biotope but given the nature of the sediment the infaunal communities are liable to resemble those in biotopes from the SCS habitat complex.
Key-words :
Crepidula, fornicata, Crepidula fornicata
Habitat description :
Medium-coarse sands with gravel, shells, pebbles and cobbles on moderately exposed coasts may support populations of the slipper limpet [Crepidula fornicata] with ascidians and anemones. This biotope could be considered a superficial or epibiotic overlay but more data is required to support this.
Habitat description :
Medium-coarse sands with gravel, shells, pebbles and cobbles on moderately exposed coasts may support populations of the slipper limpet [Crepidula fornicata] with ascidians and anemones. This biotope could be considered a superficial or epibiotic overlay but more data is required to support this.
Place : Bay of Saint-Brieuc (France)
Mesh regional Sea : Western Channel
Mesh regional Sea : Western Channel
Lat :
48.650233
48.650233
Lon :
-2.539683
-2.539683
Description :
Dense biocenoses - Bottoms with Crepidula fornicata
Comments :
This image was taken during AREVAL 2005 Cruise (Ifremer/DEL).
The bottoms colonized by Crepidula fornicata are dark in colour, with characteristic shapes in sub-parallel strips which branch off more or less. This corresponds to settlement by these animals in the hollows of megaripples on fine sandy sediment. The percentage of seabed covered is estimated to be from 20% to 40% here.
Technique(s) :
Backscatter images
- Type
sidescan
- Make & Model
Edgetech – DF 1000
- Operating frequency (kHz)
105
- Total swathe width (m)
107
- Approximate water depth (m)
9
- Gray level (positive or negative image)
negative image
Dense biocenoses - Bottoms with Crepidula fornicata
Comments :
This image was taken during AREVAL 2005 Cruise (Ifremer/DEL).
The bottoms colonized by Crepidula fornicata are dark in colour, with characteristic shapes in sub-parallel strips which branch off more or less. This corresponds to settlement by these animals in the hollows of megaripples on fine sandy sediment. The percentage of seabed covered is estimated to be from 20% to 40% here.
Technique(s) :
Backscatter images
- Type
sidescan
- Make & Model
Edgetech – DF 1000
- Operating frequency (kHz)
105
- Total swathe width (m)
107
- Approximate water depth (m)
9
- Gray level (positive or negative image)
negative image
Date : 15/05/2005
Date accuracy : Day
From : Houlgatte E., 2006; Blanchard M. and Hamon D., 2006.
Contact email : Axel.Ehrhold@ifremer.fr
Data owner : Ifremer
Date accuracy : Day
From : Houlgatte E., 2006; Blanchard M. and Hamon D., 2006.
Contact email : Axel.Ehrhold@ifremer.fr
Data owner : Ifremer
Habitats signatures website copyright MESH 2005-2006. All content copyright respective owners.