Biodiversity Data Journal :
Data Paper (Biosciences)
|
Corresponding author: Luisa F. Dueñas (luisadue@gmail.com)
Academic editor: Danwei Huang
Received: 14 Jan 2019 | Accepted: 07 Mar 2019 | Published: 07 May 2019
© 2019 Luisa Dueñas, Cristina Cedeño-Posso, Alejandro Grajales, Santiago Herrera, Estefanía Rodriguez, Juan Sánchez, Jorge Leon, Vladimir Puentes
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Dueñas L, Cedeño-Posso C, Grajales A, Herrera S, Rodriguez E, Sánchez J, Leon J, Puentes V (2019) First visual occurrence data for deep-sea cnidarians in the South-western Colombian Caribbean. Biodiversity Data Journal 7: e33091. https://doi.org/10.3897/BDJ.7.e33091
|
Attention to the deep-sea environment has increased dramatically in the last decade due to the rising interest in natural resource exploitation. Although Colombia holds a large submerged territory, knowledge of the seabed and its biodiversity beyond 1,000 m depth is very limited. During 2015–2017, Anadarko Colombia Company (ACC) carried out hydrocarbon exploratory activities in the South-western Colombian Caribbean, at depths between 375 m and 2,565 m.
Capitalising on available data resources from these activities, several cnidarian species were observed in ROV and towed camera surveys. We analysed over nine hours of video and 5,066 still images from these surveys, identifying organisms to the lowest possible taxonomic level. The images and associated data presented here correspond to 108 observations of deep-sea cnidarians, including seven new records for the Colombian Caribbean. Given the paucity of research and funding to explore the deep-sea in Colombia, the present dataset comprises the largest deep-sea Cnidaria imagery inventory to date for the Colombian Caribbean.
Biodiversity, Benthic, DwC-A, Marine, Remote Operated Vehicle-ROV, Tow Camera, Soft Bottom
Interest in the deep seas has increased dramatically in the last decade, due to the potential presence of natural resources (oil, gas, precious and rare metals, fishery resources, pharmaceuticals, biodiversity etc.). Likewise, there is an increasing concern about the health of this environment, which calls for the acquisition of baseline data (
Visual observation of the seabed and its inhabitants is possible using vessels and submersible equipment that can be remote (ROV), autonomous (AUV) or manned. This is a non-invasive in-situ procedure that can reach depths and environments that are normally out of human reach (
Video and still photographs are useful for documenting biological and ecological information, species identification, public outreach and scientific publications (
Several types of surveys are essential for the deep-sea hydrocarbon exploratory activities in Colombia. Exploratory drilling activities normally include ROV video surveys before and after drilling. These surveys are critical to evaluate the seabed conditions around the well to minimise potential impacts to sensitive ecosystems (e.g. chemosynthetic communities, deep-sea coral reefs) or archaeological sites. These vehicles are also essential to carry out inspections of the subsea infrastructure to keep the integrity of the well (
Cnidarians (jellyfish, corals, sea anemones, amongst others) are one of the most ancient invertebrate groups that keeps a simple body structure with two cell layers and a blind gut (
During 2015–2017, Anadarko Colombia Company (ACC), a subsidiary of Anadarko Petroleum Corporation, carried out hydrocarbon exploratory activities in the deep sea South-western Colombian Caribbean. The activities included both ROV and towed camera surveys at depths between 375 m and 2,565 m. Capitalising on the availability of the images obtained from these activities, several organisms from different phyla were spotted and identified to the lowest possible taxonomic status. This is the first of a series of datasets reporting visual confirmations on the occurrences of deep-sea organisms, in this case, 108 cnidarians.
ROV surveys
ROV video surveys were performed in a cross pattern. From a central point that could be a transponder (tool for positioning the drilling vessel) or the drilling location, surveys were executed in an 80 metre-long transect with a north trajectory, then an 80 metre-long transect with a south trajectory, an 80 metre-long transect with an east trajectory and finally an 80 metre-long transect with a west trajectory (Fig.
Towed camera surveys
Survey areas of interest (i.e. Chamana, Chamai, Yaduli, Cana Norte and Cawa) were assessed using 25 towed camera transects. These transects registered seafloor features, during 3-hour surveys, taking still images every 20 seconds. Benthic and pelagic megafauna specimens were recorded in the images.
Videos were analysed twice for the presence of cnidarians by two different experts. This methodology allowed us to ensure all cnidarians were registered. Still images were also analysed twice by the same expert, who did preliminary identification to phylum and class. All cnidarian 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 jpg format for towed camera photographs and as a snapshot (also in jpg format) for ROV videos.
Given that the acquisition of the images used in this paper was carried out for other purposes and objectives, they do not have the best quality for species identification. Nevertheless, the images were useful, and represent the first visual confirmation of these deep-sea organisms for the Colombian Caribbean.
For ROV surveys, we analysed a total of 48 video transects (duration: 9 h 9 min 26 sec), looking for benthic and pelagic cnidarians. We took snapshots of each cnidarian, registered coordinates and depth and identified them to the lowest possible taxonomic level. On the other hand, for towed camera images, we analysed a total of 5,066 photographs, looking for benthic and pelagic cnidarians. For each cnidarian, coordinates and depth were registered and identified to the lowest possible taxonomic level. We cropped the photographs to include only the organism and performed image correction to reduce the bluish colour cast with the Auto Tone function in Adobe Photoshop CC 2018 (Fig.
Using photographs and video footage, we highlighted the occurrences for Cnidaria here. Cnidarians were further identified to the lowest possible taxonomic level, based on comparison with literature (
ACC’s deep sea hydrocarbon exploratory activities in the South-western Colombian Caribbean included four exploratory wells (Calasu 1, Kronos 1, Gorgon A-1 and Purple Angel C-1) and five other survey areas of interest (A-E), at depths between 375 m and 2,565 m (Fig.
9.27 and 10.369 Latitude; -76.481 and -76.932 Longitude.
The data presented here correspond to 108 occurrences of deep-sea cnidarians from the South-western Colombian Caribbean, spotted over soft bottoms at depths between 375 to 2,565 m. The dataset contains the original data of depth, geographical coordinates, date and hour of the event, for each image that registered a cnidarian. Additional information includes the methodology used to obtain the images (see Methods section), taxonomic identification to the lowest possible taxonomic level, the name of the expert who identified the organism and the number of individuals of the species per image. The dataset also contains an extension with links to the images supporting the occurrences.
Seven occurrences were obtained through the ROV surveys, all corresponding to the pelagic jellyfish Poralia cf. rufescens Vanhöffen, 1902. Tow camera occurrences (n = 101) registered members of the classes Scyphozoa (n = 1), Hydrozoa (n = 13) and Anthozoa (n = 87). Only two orders of jellyfish, Trachymedusae (Crossota millsae Thuesen, 2003 and Voragonema pedunculata (Bigelow, 1913)) and Narcomedusae represent Hydrozoa, while members of seven orders represented Anthozoa. Within Anthozoa, organisms from the three subclasses (Hexacorallia, Octocorallia and Ceriantharia) were spotted. Hexacorallia was represented by anemones (order Actiniaria), the zoanthid Epizoanthus cf. stellaris Hertwig, 1888 (order Zoantharia), the black coral Bathypathes cf. patula Brook, 1889 (order Antipatharia) and cerianthids (order Ceriantharia). Octocorals were represented by the orders Alcyonacea and Pennatulacea, the latter with seven organisms belonging to the genus Umbellula Gray, 1870. Finally, corallimorphs (order Corallimorpharia) were represented by the genus Corallimorphus Moseley, 1877 (Table
Cnidarians found in the deep waters of the South-western Colombian Caribbean. * New reports for the Colombian Caribbean.
Species |
Sampling Protocol |
Depth range (m) |
Poralia cf. rufescens Vanhöffen, 1902 |
ROV |
1,565–1,818 |
Hydrozoa |
Towed Camera |
1,839–2,367 |
Semaeostomeae |
Towed Camera |
2,289 |
Crossota millsae Thuesen, 2003* |
Towed Camera |
1,165–1,189 |
Voragonema pedunculata (Bigelow, 1913)* |
Towed Camera |
2,340–2,562 |
Narcomedusae |
Towed Camera |
1,717 |
Actiniaria |
Towed Camera |
539–2,523 |
Ceriantharia |
Towed Camera |
428–2,058 |
Corallimorphus Moseley, 1877* |
Towed Camera |
2,259–2,526 |
Hormathiidae Carlgren, 1932 |
Towed Camera |
375–2,524 |
Kadosactinidae Riemann-Zürneck, 1991 |
Towed Camera |
2,352–2,430 |
Bathypathes cf. patula Brook, 1889* |
Towed Camera |
2,359–2,564 |
Virgulariidae Verrill, 1868 |
Towed Camera |
654–2,565 |
Trichogorgia lyra Bayer & Muzik, 1976 |
Towed Camera |
577–650 |
Umbellula Gray, 1870* |
Towed Camera |
1,633–2,525 |
Chrysogorgiidae Verrill, 1883 |
Towed Camera |
490 |
Epizoanthus cf. stellaris Hertwig, 1888* |
Towed Camera |
502–1,196 |
Adamsia Forbes, 1840* |
Towed Camera |
486–2,563 |
Phelliactis Simon, 1842* |
Towed Camera |
2,561 |
Based on the 101 occurrences from towed camera surveys, we registered eight new reports of cnidarians for the Colombian Caribbean. The new records for the area comprised two sea anemones, one zoanthid, one corallimorpharian, one octocoral, one black coral (Fig.
The genus Corallimorphus has a total of six valid species (
The genus Phelliactis (fam. Hormathiidae) is composed of 20 valid species distributed worldwide (
Anemones, belonging to the genus Adamsia, are known for holding symbiotic relationships with hermit crabs, most commonly with the species Sympagurus pictus (
Other hexacorallians, described as new reports for the Colombian Caribbean, include Bathypathes cf. patula and Epizoanthis cf. stellaris. Bathypathes patula is also a widespread, cosmopolitan species that has been described from the Pacific, the Atlantic, the Indian Ocean, the Gulf of México and Puerto Rico (
The pennatulacean genus Umbellula comprises 13 species (
Finally, the two hydromedusae from the Rhopalonematidae family, Crossota millsae and Voragonema pedunculata (previously know as Benthocodon pedunculata), are bathypelagic and often found in groups drifting above the bottom; this is the reason why they are also described as benthopelagic. These two species have been reported in the Western Atlantic (the Bahamas and Dry Tortugas) (
Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License
The data presented here corresponds to occurrences of deep-sea cnidarians from the South-western Colombian Caribbean, spotted over soft bottoms at depths between 375 to 2,565 m.
Column label | Column description |
---|---|
occurrenceID | An identifier for the Occurrence |
basisOfRecord | The specific nature of the data record |
institutionCode | The name in use by the institution having custody of the information referred to in the record |
collectionCode | The name, acronym, coden or initialism identifying the collection or dataset from which the record was derived |
catalogNumber | An identifier for the record within the dataset |
type | The nature or genre of the resource |
language | Thelanguage of the resource |
rightsHolder | The organisation owning or managing rights over the resource |
accessRights | Information about who can access the resource or an indication of its security status |
institutionID | An identifier for the institution having custody of the information referred to in the record. |
ownerInstitutionCode | The name in use by the institution having ownership of the information referred to in the record |
recordedBy | People responsible for recording the original Occurrence |
individualCount | The number of individuals represented present at the time of the Occurrence |
lifeStage | The age class or life stage of the biological individual(s) at the time the Occurrence was recorded |
occurrenceStatus | A statement about the presence or absence of a Taxon at a Location |
preparations | A list of preparations and preservation methods for a specimen |
samplingProtocol | Protocol used during an Event |
samplingEffort | The amount of effort expended during an Event |
eventDate | The date during which an Event occurred |
eventTime | The time during which an Event occurred |
year | The four-digit year in which the Event occurred |
month | The ordinal month in which the Event occurred |
day | The integer day of the month on which the Event occurred |
verbatimEventDate | The verbatim original representation of the date and time information for an Event |
habitat | A category or description of the habitat in which the Event occurred |
higherGeography | Geographic location less specific than the information captured in the locality term |
continent | The name of the continent in which the Location occurs |
waterBody | The name of the water body in which the Location occurs |
locationID | An identifier for the set of location information |
country | The name of the country in which the Location occurs |
countryCode | The standard code for the country in which the Location occurs |
locality | The specific description of the place |
verbatimDepth | The original description of the depth below the local surface |
minimumDepthInMetres | The lesser depth of a range of depth below the local surface, in metres |
maximumDepthInMetres | The greater depth of a range of depth below the local surface, in metres |
verbatimLatitude | The verbatim original latitude of the Location |
verbatimLongitude | The verbatim original longitude of the Location |
verbatimCoordinateSystem | The spatial coordinate system for the verbatimLatitude and verbatimLongitude or the verbatimCoordinates of the Location |
decimalLatitude | The geographic latitude of the geographic centre of a Location |
decimalLongitude | The geographic longitude of the geographic centre of a Location |
geodeticDatum | The ellipsoid, geodetic datum or spatial reference system (SRS) upon which the geographic coordinates given in decimalLatitude and decimalLongitude as based |
georeferencedBy | The organisation who determined the georeference for the Location |
identifiedBy | A list of names of people who assigned the Taxon to the subject |
dateIdentified | The date on which the subject was identified as representing the Taxon |
identificationQualifier | A brief phrase or a standard term to express the determiner's doubts about the Identification |
scientificNameID | An identifier for the nomenclatural details of a scientific name |
nameAccordingToID | An identifier for the source in which the specific taxon concept circumscription is defined or implied |
acceptedNameUsage | The full name, with authorship and date information if known, of the currently valid (zoological) or accepted (botanical) taxon |
nameAccordingTo | The reference to the source in which the specific taxon concept circumscription is defined or implied - traditionally signified by the Latin "sensu" or "sec." |
scientificName | The full scientific name, with authorship and date information if known |
kingdom | The full scientific name of the kingdom in which the taxon is classified |
phylum | The full scientific name of the phylum or division in which the taxon is classified |
class | The full scientific name of the class in which the taxon is classified |
order | The full scientific name of the order in which the taxon is classified |
family | The full scientific name of the family in which the taxon is classified |
genus | The full scientific name of the genus in which the taxon is classified |
specificEpithet | The name of the first or species epithet of the scientificName |
taxonRank | The taxonomic rank of the most specific name in the scientificName |
scientificNameAuthorship | The authorship information for the scientificName |
taxonomicStatus | The status of the use of the scientificName as a label for a taxon |
Thanks to Anadarko Colombia Company (ACC), a subsidiary of Anadarko Petroleum Company (APC) and Ecopetrol. Other companies involved in this oil & gas exploratory survey were Dolphin Drilling that operated the Mobile Operating Drilling Unit (MODU)and Subsea 7 (and its division I-TECH services) operated the ROV from the MODU. We thank their technical staff for conducting the ROV surveys and their willingness, time and patience that made possible the acquisition of the images we worked with. Towed camera images were provided by SERPORT and CSA Ocean Science Inc., during additional exploration studies of areas of interest. We want to thank Colciencias’ Post-Doctoral Program (Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación "Francisco José de Caldas" - COLCIENCIAS, Convocatoria 2017, Número 784) and additional taxonomic experts who contributed to the further identification of some organisms: Dennis Opresko (Smithsonian National Museum of Natural History), Mercer Brugler (New York City College of Technology), Tina Molodtsova (P.P. Shirshov Institute of Oceanology), Frederic Sinniger (University of the Ryukyus) and Steven Haddock (Monterey Bay Aquarium Research Institute). We would also like to thank the Instituto de Investigaciones Marinas y Costeras – INVEMAR for the funding and support during the analysis of the ROV videos and images, and the taxonomic identification. Contribution No. 1216 of INVEMAR. Additional thanks go to the SiB Colombia team (Dairo Escobar, Leonardo Buitrago, Camila Plata) who helped in the data and image publication process.