19.01.2016 - 14:52 Physalia Sykia | CIGESMED pour les plongeurs

Date de l'observation:

06.07.2014

Nom de la localité ou du site de plongée:

Sykia

Courant:

none

Visibilité:

clear water

Profondeur de l'observation:

30.00(m)

Profondeur maximale atteinte lors de la plongée:

30(m)

Etendue horizontale du concrétionnement coralligène observé:

more than 20 m

Orientation:

NW

Continuité de l'habitat:

Discontinu

Pente:

Inclinée

Rugosité:

Grande

Autres observations:

Codium bursa, Echinaster sepositus, Flabellia petiolata, Halocynthia papillosa, Parazoanthus axinellae, Sphaerechinus granularis

Pressions et menaces:

Non-indigenous species: Caulerpa cylindracea (Extended)

Non-indigenous species: Asparagopsis spp.

Mucilaginous aggregations

Organism necrosis and mortality events

Sedimentation on coralligenous biota

Diver recklessness

Fishing gear (Extended)

Litter (Limited)

Anchoring

Urban waste sources nearby (Limited)

Other

Organismes du coralligène:

Calcareous red algae (Scarce)

Peyssonnelia spp. (Abundant)

Agelas oroides (Abundant)

Axinella spp. (Abundant)

Eunicella cavolini (Absent)

Eunicella singularis (Absent)

Paramuricea clavata (Absent)

Leptogorgia sarmentosa (Absent)

Savalia savaglia (Absent)

Scleractinians (Scarce)

Corallium rubrum (Absent)

Homarus gammarus (Absent)

Palinurus elephas (Scarce)

Scyllarides latus (Absent)

Other erect bryozoans (Abundant)

Centrostephanus longispinus (Absent)

Other sea urchins (Scarce)

Shark eggs (Absent)

https://cs.cigesmed.eu/sites/default/files/web_axinella_issaris_01.jpg,https://cs.cigesmed.eu/sites/default/files/web_axinella_issaris_05.jpg,https://cs.cigesmed.eu/sites/default/files/web_eunicella-cavolinii_issaris_01.jpg,https://cs.cigesmed.eu/sites/default/files/web_general_issaris_02.jpg,