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Circalittoral faunal turf occurrences on the Azores shelves (central north Atlantic) from 2005 to 2018
Citable as data publication
Tempera F.; Sinde-Mano A.L.; Gomes Pereira J.N.;Das D.; Graça G.; Afonso P.; IMAR-Institute of Marine Research, University of the Azores, Portugal; (2021): Circalittoral faunal turf occurrences on the Azores shelves (central north Atlantic) from 2005 to 2018.
Contact: Tempera, Fernando ; Afonso, Pedro

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Circalittoral faunal turfs are animal-dominated shelf assemblages that are found on hard substrata between the lower limit of the infralittoral zone and the shelf edge. Benthic organisms generally form dense intricate mixes that may include tall alcyonarians, sponges, hydroids, scleractinians and gorgonians, as well as less prominent fauna such as encrusting sponges, bryozoans, ascidians, bivalves, solitary cup corals, serpulid worms and vermetid gastropods. more

These assemblages make up an important part of two of the EC Habitats Directive Annex I habitats: i) ‘Reefs’ (1170) and ii) ‘Submerged or partly submerged sea caves’ (8830) containing deep aphotic enclaves. A variety of circalittoral faunal turfs have been observed on the Azores shelves but knowledge on their distribution and the assemblages they form is scarce. This dataset compiles circalittoral faunal turf occurrences from sublittoral surveys conducted across the Azores archipelago (NE Atlantic) between 2005 and 2018. Sampling concentrated on island shelf and margin settings and was conducted using various optical platforms: (i) two small remote operated vehicles (a VideoRay Explorer micro-ROV and a SeaBotix LBV300S-6 mini-ROV); (ii) two custom-made underwater drop-down video frames carrying Tritech MD4000, GoPro Hero3+ or GitUp Git 2 cameras. A literature-based record made with a manned submersible is included for the sake of completion. The compilation comprises 548 occurrences (200 presences and 348 absences) identified at depths ranging between 24 m and 307 m. "Acknowledgements: To the Portuguese Foundation for Science and Technology for grants and individual contracts awarded to Fernando Tempera (refs: SFRH/BD/12885/2003, SFRH/BPD/79801/2011) and P. Afonso (IF/01640/2015) and funding of Okeanos Strategic Program. To projects CoralFish (EC-FP7ENV/2007/1/213144), CORAZON (FCT/PTDC/MAR/72169/2006), PLATMAR (FCT/PTDC/GEO-GEO/0051/2014) and Mission Atlantic (EC H2020-LC-BG-08-2018) for funding surveys throughout the archipelago and work by F. Tempera and J.N. Gomes Pereira. To the Azores Regional Government for funding the projects MoniZec, BALA, MoniZec-ARP and MONICO via the Regional Foundation for Science & Technology (DRCT/FRCT) and the Regional Directorate for Maritime Affairs (DRAM). To the Azores Regional Government for funding a Estagiar-L grant awarded to A.L. Sinde-Mano. To the Oceano Azul Foundation and the Waitt Foundation for funding the Blue Azores 2018 expedition. To the University of St. Andrews (Scotland) and Richard Bates for providing the Tritech camera used in the 2005 survey. To Renato Martins (IMAR-DOP/UAz) for the mini-ROV SP operation and troubleshooting. To the crews of the vessels R/L Águas Vivas, R/V Arquipélago and Nossa Senhora dos Milagres for all the hard work at sea. To Ricardo Serrão Santos and Frederico Cardigos for their general support and organisation of the early BANCOS expeditions promoted by IMAR/DOP-UAç."

Biology > Benthos
Aguas Vivas, Arquipelago, Biota, Cameras, Habitat types and species distribution and range (Habitats Directive), Habitats and biotopes, Local, No limitations to public access, Oceans, propelled unmanned submersible, Remotely operated vehicles, research vessel, submersible, ANE, Azores, EurOBIS calculated BBOX, Animalia

Geographical coverage
ANE, Azores [Marine Regions]
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: -31,15; MinLat: 36,9 - MaxLong: -24,75; MaxLat: 39,75 [WGS84]

Temporal coverage
15 September 2005 - 8 September 2018

Taxonomic coverage
Animalia [WoRMS]



Institute of Marine Research (IMAR)data creatordata creatordata provider
Tempera, Fernando
Afonso, Pedro
Sinde-Mano, Ana Luísa
Gomes-Pereira, José
Das, Diya
Graca, Goncalo

Related datasets
Published in:
EurOBIS: European Ocean Biodiversity Information System, more

Mission Atlantic

Used in this dataset
Tempera, F. et al. (2013). Atlantic Area Marine Habitats: Adding new Macaronesian habitat types from the Azores to the EUNIS Habitat Classification. Technical Report No. 4/2013. MeshAtlantic/IMAR/DOP-UAç: Horta. 126 pp.

Dataset status: Completed
Data type: Data
Data origin: Monitoring: field survey
Metadatarecord created: 2022-03-03
Information last updated: 2024-05-15
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