Vulnerable Marine Ecosystem detected via ROV at Cuverville Island, Western Antarctic Peninsula (Subarea 48.1)

Registros

Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 20 registros.

también existen 3 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.

Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.

Versiones

La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

Lockhart S, Plasman C (2025). Vulnerable Marine Ecosystem detected via ROV at Cuverville Island, Western Antarctic Peninsula (Subarea 48.1). Version 2.0. SCAR - AntOBIS. Samplingevent dataset. https://doi.org/10.48361/mpljcr

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es SCAR - AntOBIS. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: 4832c401-3747-4e0d-a1dd-95b1f73943e8.  SCAR - AntOBIS publica este recurso y está registrado en GBIF como un publicador de datos avalado por Ocean Biodiversity Information System.

Palabras clave

VULNERABLE MARINE ECOSYSTEM; VME; CCAMLR; ANTARCTICA; SPONGES; HYDROIDS; INDICATOR TAXA; KELP; BLUE CARBON; Samplingevent; Observation

Contactos

Cobertura geográfica

This dataset represents observations collected via ROV dives in the Southern Ocean, off the east coast of Cuverville Island (Errera Channel, Gerlache Strait, Western Antarctic Peninsula). Geographic coverage was inferred from the sample locations (62°36'51.5"W, 64°41'24.6"S). The region includes benthic habitats potentially corresponding to Vulnerable Marine Ecosystems (VMEs) under CCAMLR criteria.

Cobertura taxonómica

No hay descripción disponible

Cobertura temporal

Datos del proyecto

A novel collaboration between commercial submersible pilots, and their organizations, with Southern Benthics to provide footage of the seabed around Antarctica for the purposes of securing protection for VMEs, and for monitoring the health of those VMEs in the long term in the face of the climate crisis.

Personas asociadas al proyecto:

Métodos de muestreo

Sampling was conducted by a Deep Trekker ROV with inbuilt 4K camera.

Descripción de la metodología paso a paso:

1. DaVinci Resolve 18.6 was used to combine separate files where necessary and for editing.
2. Clean-up followed the same methodology as was used for analyzing the submersible footage for the successful nomination of VMEs in WG-EMM-22/46Rev1 to remove unusable sequences. For the Cuverville Is footage that meant the removal of any sequences where the ROV was too far from the wall, where the visibility was poor, too much water column filled the frame, when the ROV remained focused on one area and where the ROV was moving too fast to produce a clear frame for analysis. This is the footage deposited in Zenodo.
3. Since kelp obscured the view of the benthos, further edits of footage were made where seaweed obscured more than 40% of the frame. Resultant length of footage for analysis was 14m49s.
4. Footage was color graded within DaVinci Resolve 18.6.
5. The analysis methodology also followed that which was used in WG-EMM-22/46Rev1. To compare the relative percent abundance of VME indicator taxa to that of non-VME taxa and bare substrate at the Cuverville Is site, frames were exported at regular intervals (40 secs) beginning at 0:00.
6. The resulting series of images were then imported into the program PAPARA(ZZ)I (Marcon & Purser, 2017). Within this program images were further enhanced by adjusting brightness, contrast and gamma. As recommended by the authors, the usable area was then defined for each image allowing the exclusion of dark or blurred edges.
7. Once images were prepared in this way, an array of 100 random points was overlayed. Each point in each image was assigned one of four designations: VME indicator taxa, non-VME taxa, seaweed or bare substrate.
8. Analysis of individual frames (which can appear low quality) is always accompanied by careful observation of the original full length footage which shows a greater resolution of view, approach to analysis frame, often provides different angles and views that were edited out to reduce bias and can include macro closeup imagery that all help to ground truth the scoring of random points in any individual frame analysed.

Referencias bibliográficas

1. Lockhart, S. and Hocevar J. (2021) Combined Abundance of all Vulnerable Marine Ecosystem Indicator Taxa inadequate as sole determiner of vulnerability, Antarctic Peninsula. Frontiers in Marine Science. Sept 2021, Vol 8, Article 577761. https://doi.org/10.3389/fmars.2021.577761. https://doi.org/10.3389/fmars.2021.577761
2. Marcon, Y. and Purser A. (2017) PAPARA(ZZ)I: An open-source software interface for annotating photographs of the deep-sea. SoftwareX. 6, 69-80.
3. SC-CAMLR-XXXVII (2018) Thirty-seventh Meeting of the Scientific Committee. CCAMLR. Hobart, Australia.
4. SC-CAMLR-41 (2022) Forty-first meeting of the Scientific Committee. CCAMLR. Hobart, Australia.
5. SC-CAMLR-43 (2024) Forty-third meeting of the Scientific Committee. CCAMLR. Hobart, Australia.
6. Tait, L.W., C. Chin, W. Nelson, S. George, P. Marriott, R.L. O’Driscoll, M. Lamare, V.S. Mills and V.J. Cummings (2024) Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation. Communications Earth & Science. 5:205. https://doi.org/10.1038/s43247-024-01362-2
7. WG-EMM-18/35. Lockhart, S. & J. Hocevar (2018) Evidence of Vulnerable Marine Ecosystems documented via submarine in the Antarctic Sound and Gerlache Strait (Subarea 48.1). CCAMLR. Hobart, Australia.
8. WG-EMM-22/34Rev1. Lockhart, S. & R. Izendooren (2022) Evidence of a Vulnerable Marine Ecosystem documented via tourist submarine off Cape Well-Met, Vega Island, Eastern Antarctic Peninsula (Subarea 48.1). CCAMLR. Hobart, Australia.
9. WG-EMM-22/46Rev1. Lockhart, S., R. Downey, R. García-Roa, J. Hocevar & L. Weller (2022) Vulnerable Marine Ecosystems documented via submarine in the Bransfield Strait and the Eastern Antarctic Peninsula (Subarea 48.1). CCAMLR. Hobart, Australia.
10. WG-EMM-24/48Rev1. Lockhart, S., S. Potter, C. Venus, K. Weller, R.C. Izendooren (2024) Submersible gathered evidence of a Vulnerable Marine Ecosystem at the Melchior Islands, Western Antarctic Peninsula (Subarea 48.1). CCAMLR. Hobart, Australia.
11. 11. The Scientific Committee on Antarctic Research. (2023). SCAR Report 42 - September 2022 - SCAR Data Policy (2022). Zenodo. https://doi.org/10.5281/zenodo.7825314. https://doi.org/10.5281/zenodo.7825314

Metadatos adicionales