EUNIS habitat classification 2017 > M - Marine benthic habitats > MC6 - Circalittoral mud > MC64 - Black Sea circalittoral mud > MC645 - Black sea lower circalittoral mud

Black sea lower circalittoral mud

Description (English)

Terrigenous muds (mud of terrestrial origin), calcareous muds and biogenic detritic bottoms at depths of 60-180m. The benthic fauna is dominated by bean mussels Modiolula phaseolina, polychaetes and solitary ascidians. At the greatest depths the environment becomes hypoxic. Here the sediment consists of periazoic calcareous white muds and faunal communities become impoverished. Characteristic species:Modiolula phaseolina, Amphiura stepanovi, Terebellides stroemi, Pachycerianthus solitarius, solitary ascidians (Ascidiella aspersa, Ciona intestinalis, Eugyra), hydrozoans (Bougainvillia ramosa), nematodes and oligochaetes.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MC645

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Amphiura stepanovi
Invertebrates Ascidiella aspersa
Invertebrates Bougainvillia ramosa
Invertebrates Ciona intestinalis
Invertebrates Modiolula phaseolina
Species scientific name English common name Species group
Amphiura stepanovi Invertebrates
Ascidiella aspersa Invertebrates
Bougainvillia ramosa Invertebrates
Ciona intestinalis Invertebrates
Modiolula phaseolina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A5.37 Deep circalittoral mud narrower
European Red List of Habitats BLSA5.37 Pontic lower circalittoral mud same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.37 Deep circalittoral mud same
EUNIS Habitat Classification 200202 A4.74 Animal communities of deep circalittoral muddy bottoms same
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