Kelp occurrences in the Azores (northeast Atlantic) ...

• Main Authors: Atchoi, Elizabeth, Sinde-Mano, Ana Luísa, Milla-Figueras, David, Tempera, Fernando
• Format: Dataset
• Language: English
• Published: Marine Data Archive 2020
• Subjects: Biology > Macroalgae; Phaeophyceae; Northeast Atlantic
• Online Access: https://dx.doi.org/10.14284/423; http://www.vliz.be/en/imis?dasid=6556&doiid=423

Dataset collating kelp occurrences (presences and absences) from surveys conducted across the Azores archipelago (NE Atlantic) using remotely operated vehicles, drop-down cameras, open and closed-circuit SCUBA diving, and fisheries by-catch information. ... : Dataset collating sublittoral kelp occurrences (presences and absences) of Laminaria ochroleuca and Phylariopsis brevipes subsp. brevipes from surveys conducted across the Azores archipelago (NE Atlantic). The surveys targeted 735 points in rocky and mixed seabed areas between 35m and 85 m depth, which generally corresponds to the depth range of these species in the archipelago. They were performed between 2004 and 2018 using: (i) two small remote operated vehicles (a VideoRay Explorer micro-ROV and a SeaBotix LBV300S-6 mini-ROV); (ii) two custom-made drop-down cameras (DDCs) built from Tritech MD4000, GoPro Hero3+ and GitUp Git 2 cameras; and (iii) SCUBA diving using conventional open-circuit systems for dives shallower than 40 m and rebreathers (RB80 Passive Semi-Closed, JJ Closed-Circuit and Sidewinder sidemount rebreathers) for deeper dives. A few specimens by-caught in the course of the ARQDAÇO fisheries surveys organized by IMAR/DOP-University of the Azores were also included in our record list. ROV ...