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17.09.2019 - 12:50 Laura B Pierre de Briançon

Date of observation: 
14.09.2019
Name of location or dive site: 
Pierre de Briançon
Current: 
none
Visibility: 
clear water
Water Temperature: 
22℃
Vertical extent of the habitat: 
Min

20

(m)
Max

25

(m)
Observation Depth: 
24.00(m)
Maximum Dive Depth: 
24(m)
Horizontal extent of the habitat: 
10-20 m
Orientation: 
S
Thermocline's Depth: 
0.00(m)
Water temperature at predefined depths: 
Temperature: 
22.00℃
Meters: 
24.00(m)
Habitat continuity: 
Continuous
Slope: 
vertical
Rugosity: 
Large
Other observations : 

Observation faite sous l'arche de la Pierre à Briançon. 

Observation faite par Justine Richaume (N2) - POLARIS

Pressures and Threats: 
Non-indigenous species: Caulerpa cylindracea (Absent)
Non-indigenous species: Asparagopsis spp. (Absent)
Mucilaginous aggregations (Absent)
Organism necrosis and mortality events (Absent)
Sedimentation on coralligenous biota (Absent)
Diver recklessness (Absent)
Fishing gear (Absent)
Litter (Absent)
Anchoring (Absent)
Urban waste sources nearby
Other
Coralligenοus Organisms: 
Eunicella cavolini (Abundant)
Eunicella singularis (Absent)
Paramuricea clavata (Absent)
Leptogorgia sarmentosa (Absent)
Savalia savaglia (Absent)
Shark eggs (Absent)
Anthias anthias (Scarce)
Epinephelus marginatus (Absent)
Scorpaena spp. (Absent)
Centrostephanus longispinus (Absent)
Other sea urchins (Absent)
Calcareous red algae (Abundant)
Peyssonnelia spp. (Scarce)
Agelas oroides (Scarce)
Axinella spp. (Absent)
Myriapora truncata (Scarce)
Other erect bryozoans (Scarce)
Scleractinians (Absent)
Cliona spp. (Abundant)
Corallium rubrum (Absent)
Homarus gammarus (Absent)
Palinurus elephas (Absent)
Scyllarides latus (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,