EUNIS habitat classification 2017 > M - Marine benthic habitats > MA4 - Littoral mixed sediment > MA45 - Mediterranean littoral mixed sediment > MA452 - Biocenosis of Mediterranean mediolittoral mixed detritus

Biocenosis of Mediterranean mediolittoral mixed detritus

Description (English)

Mid-beach with stones and pebbles, with a vertical extension that is usually slight.
Mid-beach pebbles which retain between them plant debris thrown up on the beach as wrack. Possible site for Posidonia banks.
This area goes through periods of alternating submersion in and emergence from the water during calm weather because of variations in the water level, and is frequently moistened by wavelets. The vertical size of the rise and fall of the water, which can be some dozens of centimetres, can mark out strips several metres wide on the beach.
The habitat can present variations according to the granulometric size in the substratum, the hydrodynamic action produced by the backwash and the quantity and quality of detritus thrown up on the beach as wreckage.
The population dynamics vary according to the humectation of the environment and, especially, the level of wave energy since hydrodynamics are the vector of the dampness and of the quality and quantity of detritus that can be used for food as well as sedimentation. Powerful hydrodynamics encourage the laying down of a coarse sediment. The fauna is basically made up of scavengers of detritus and their predators, and so essentially unstable. It is characterised by two crustaceans, the amphipod Echinogammarus olivii and the isopod Sphaeroma serratum.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MA452
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Echinogammarus olivii
Invertebrates Sphaeroma serratum
Species scientific name English common name Species group
Echinogammarus olivii Invertebrates
Sphaeroma serratum Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A2.13 Mediterranean communities of mediolittoral coarse detritic bottoms same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A2.13 Mediterranean communities of mediolittoral coarse detritic bottoms same
EUNIS Habitat Classification 200308 A2.13 Mediterranean communities of the mediolittoral coarse detritic bottoms same
EUNIS Habitat Classification 200202 A2.13 Communities of the mediolittoral coarse detritic bottoms same
EUNIS Habitat Classification 199910 A2.13 Biocenosis of the mediolittoral coarse detritic bottoms same
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