Report of deep-sea Porifera (Euplectellidae, Euretidae, Hylanematidae, Pheronematidae, Rossellidae) in the southern Colombian Caribbean.
Citation
Garcia S M, Dueñas L F, Puentes V, Dueñas L F (2022). Report of deep-sea Porifera (Euplectellidae, Euretidae, Hylanematidae, Pheronematidae, Rossellidae) in the southern Colombian Caribbean.. Anadarko Colombia Company. Occurrence dataset https://doi.org/10.15472/mjrf3a accessed via GBIF.org on 2024-08-26.Description
Deep-sea research activities in Colombia are growing in a fast pace, and possibilities for substantial scientific discoveries are more reachable than ever. During 2015 to 2017 Anadarko Colombia Company (ACC), in search of hydrocarbon sources in the southern Colombian Caribbean, explored deep-waters between 375 to 2500 depth. Thanks to these exploratory activities, and through ROV surveys and towed cameras, it was possible to record the diverse animals inhabiting the deep sea. The sponges (Porifera) encountered during the exploratory activities, which were identified to the most exact taxonomic level, are presented in the current data.
The data presented here corresponds to 81 occurrences of deep-sea Echinoderm. The taxonomic coverage of this dataset includes 1 class, 3 orders, 5 families, 4 genus and 3 species. There is a 26% classifed to the species level, 14% to class, 11% to family, 5% to order, 43% to genus, and 1% phylum.
Sampling Description
Study Extent
Anadarko Colombia Company hydrocarbon exploration activities in the Southwestern Colombian Caribbean, include four wells (i.e. Gorgon A-1, Calasu 1, Kronos 1, and Purple Angel C-1), and the other areas of interest (i.e. Chamana, Chamai, Yaduli, Cana Norte, and Cawa). The exploratory wells and areas of interest are localized in the South-western Colombian Caribbean, at depths between 375 m and 2500 m. In general, wells and areas of interest are approximately 54km to 74km offshore from the nearest point in the Caribbean coast of Colombia.Sampling
Survey areas of interest were assessed using 25 towed camera transects. The cameras registered seafloor features during 3-hour surveys, taking still images every 20 seconds. Benthic and bentho-pelagic megafauna specimens were recorded in the imagesQuality Control
Still images and pictures of towed cameras were analyzed twice by the same expert, who did the preliminary identification to phylum and class. All porifera images were then identified to the lowest possible taxonomic level. When in doubt about the identification, additional experts were contacted and the images were sent to them in a .jpg file for towed camera photographs, and as a snapshot (also in jpg format) for ROV videos.Method steps
- ROV surveys consisted of 80 meter-long transects in cross fashion, north, south, east, and west, from a central point that could be a transponder (tool for positioning of the drilling vessel) or the exact drilling location.
- We analyzed a total of 5066 photographs, looking for benthic and bentho-pelagic fauna. The presence of porifera was recorded in the wells Calasu, Chamana, Kronos, CanaNorte, Yaduli, Chamai, Cauwa. Each organism was identified to the lowest possible taxonomic level, and coordinates and depth were registered. We cropped the photographs to include only the organism, and performed image correction to reduce the blueish color cast with the Auto Tone function in Adobe Photoshop CC 2018.
- Using photographs and video footage, all the organisms were grouped to Phylum and Class. In this paper, we only highlight the occurrences for the Phylum Porifera. Porifera were further identified to the lowest possible taxonomic level, based on comparison with literature, databases and with the help of taxonomic experts from each group. The taxonomy here presented is in accordance to the World Register of Marine Species – WORMS (http://www.marinespecies.org/).
Taxonomic Coverages
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Hexactinellidarank: class
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Amphidiscosidarank: order
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Lyssacinosidarank: order
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Sceptrulophorarank: order
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Euplectellidaerank: family
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Euretidaerank: family
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Hyalonematidaerank: family
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Pheronematidaerank: family
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Rossellidaerank: family
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Euplectellarank: genus
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Chonelasmarank: genus
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Pheronemarank: genus
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Hyalonemarank: genus
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Chonelasma choanoidesrank: species
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Euplectella suberearank: species
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Pheronema grayirank: species
Geographic Coverages
Bibliographic Citations
Contacts
Sarha M. Garciaoriginator
position: Biology undergraduate student
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
email: sagarciar@unal.edu.co
Luisa F Dueñas
originator
position: Assistant Professor Unal - Bogotá
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
Vladimir Puentes
originator
position: Senior Fisheries / Environmental Advisor
Fundacion Amano
Bogotá
Bogotá, D.C.
CO
Sarha M. Garcia
metadata author
position: Biology undergraduate student
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
email: sagarciar@unal.edu.co
Luisa F. Dueñas
metadata author
position: Assistant Professor Unal - Bogotá
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
Vladimir Puentes
custodian steward
position: Asesor Ambiental / Pesquero Senior
Fundación Amano
Bogotá
Bogotá D.C.
CO
email: zanclus0715@gmail.com
Sarha M. Garcia
administrative point of contact
position: Biology undergraduate student
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
email: sagarciar@unal.edu.co
Luisa F. Dueñas
administrative point of contact
position: Assistant Professor Unal - Bogotá
Universidad Nacional de Colombia
Bogotá
Bogotá, D.C.
CO
email: lduenasm@unal.edu.co
userId: http://scholar.google.com/citations?user=rJL9yY4AAAAJ&hl=en
Vladimir Puentes
administrative point of contact
position: Senior Fisheries / Environmental Advisor
Fundación Amano
Bogotá
Bogotá, D.C.
CO
email: zanclus0715@gmail.com