Occurrence dataset Registered July 07, 2022
Report of deep-sea Porifera (Euplectellidae, Euretidae, Hylanematidae, Pheronematidae, Rossellidae) in the southern Colombian Caribbean.
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.
Geographic scope
- Description
Anadarko Colombia Company’s hydrocarbon exploration activities in the Southwestern Colombian Caribbean Sea, include four wells (i.e. Gorgon A-1, Calasu 1, Kronos 1, and Purple Angel C-1), and five 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 120 m and 2568 m. In general, wells and areas of interest are approximately 54km to 74km offshore from the nearest point in the Caribbean coast of Colombia.
- Latitude
- From 9.005 to 10.493
- Longitude
- From -76.915 to -76.21
Temporal scope
- range
- September 29, 2015 - October 05, 2015
Taxonomic scope
- Description
The data presented here corresponds to 81 occurrences (26 of Euplectellidae, 4 of Euretidae, 23 of Hyalonematidae, 3 of Pheronematidae, 9 of Rossellidae) 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.
- Coverage
- Hexactinellida
AmphidiscosidaLyssacinosidaSceptrulophora
Euplectellidae
Methodology
- 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 images
- 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.
- Quality 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/).
Metrics
Contacts
- Organization
- Universidad Nacional de Colombia
- Position
- Biology undergraduate student
- Roles
- Originator
Metadata author
Administrative point of contact
Luisa F Dueñas
Originator- Organization
- Universidad Nacional de Colombia
- Position
- Assistant Professor Unal - Bogotá
- Roles
- Originator
Vladimir Puentes
Originator- Organization
- Fundacion Amano
- Position
- Senior Fisheries / Environmental Advisor
- Roles
- Originator
Luisa F. Dueñas
Metadata author- Organization
- Universidad Nacional de Colombia
- Position
- Assistant Professor Unal - Bogotá
- Roles
- Metadata author
- Organization
- Fundación Amano
- Position
- Asesor Ambiental / Pesquero Senior
- Roles
- Custodian steward
Administrative point of contact
- Organization
- Universidad Nacional de Colombia
- Position
- Assistant Professor Unal - Bogotá
- Roles
- Administrative point of contact
- User ID
GBIF registration
- Registration date
- July 07, 2022
- Metadata last modified
- June 17, 2024
- Publication date
- July 07, 2022
- Hosted by
- Instituto de Investigaciones Marinas y Costeras - Invemar
- Installation
- IPT SiB Marino
- Endpoints
- Darwin Core Archive
- EML
- Preferred identifier
- 10.15472/mjrf3a
- Alternative identifiers