| Concept URI | http://eunis.eea.europa.eu/eunishabitats/A3.128 |
|---|---|
| Preferred label | Pontic [Cystoseira barbata] on exposed cobbles, boulders and bedrock mixed with and scoured by sand |
| Definition | The dominant species in the [Cystoseira] biocenosis is the brown alga [Cystoseira barbata], which develops on rocky substrates from the spray zone to a depth of 15 m. The mass species are: the molluscs [Mytilaster lineatus] and [Rissoa splendida]; the amphipods [Amphythoe vaillanti] and [Caprella acantifera]; and the polychaetes [Grubea clavata]. Other common species include: the polychaetes [Nereis succinea], [Nephthys hombergii] and [Terebellides stroemi]; the molluscs [Cerastoderma glaucum], [Irus irus], [Polititapes aurea], [Donacilla cornea] and [Pitar rudis] (Zaitsev and Alexandrov, 1998). Along the Romanian shores [Mytilaster lineatus], [Mytilus galloprovincialis] and [Balanus improvisus] are the species occurring with highest frequency within this habitat (which extends until 6 meters depth). Of these species [Mytilaster] is the most important species in terms of density and biomass amounting to almost 80% of the sessile fauna observed. The most important macrobenthic taxa amount to 40 species of which 77% amphipods, 9% polichaetes and 8% isopods. Most frequent amphipods, occurring annually, are [Erichtonius difformis], [Amphitoe vaillanti], [Corophium acherusicum], [Stenothoe monoculoides], [Jassa ocia], [Hyale pontica]. The most frequently occurring isopods are: [Idothea baltica], [Nassa (Dynamena) bidentata], [Synisoma capito]. The most frequently observed polychaetes are [Fabricia clavella] and [Brania clavata] (Tiganus, 1991-1992). |
| Notation | A3.128 |
| Status | Valid |
| Status Modified | 2014-01-31 |
| Accepted Date | 2014-01-31 |
| Not Accepted Date | |
| Has broader | |
| Has exact match |
European Environment Agency
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