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Samples were collected on the continental shelf and slope near Kapp Norvegia (eastern Weddell Sea, Antarctica) at water depths ranging from 224 to 1,065 m during RV Polarstern cruise PS152 (WOBEC) in 2025/2026.</p><p>Weddell Sea Observatory of Biodiversity and Ecosystem Change (WOBEC) is funded under the European Union&#39;s flagship programme BiodivMon, coordinated within Biodiversa&#43;, the European Biodiversity Partnership (grant no. Biodiversa2022-341).This dataset is published as open data in Darwin Core with technical support provided by SCAR Antarctic Biodiversity Portal (biodiversity.aq) (BELSPO project RT/23/ADVANCE). Please follow the guidelines from the SCAR Data Policy (SCAR, 2023) when using the data. Please contact us via the contact information provided in the metadata or via data-biodiversity-aq&#64;naturalsciences.be for any inquiry about this dataset. Issues with dataset can be reported at https://github.com/biodiversity-aq/data-publication/</p>","language":"eng","citation":{"text":"Teschke, Katharina; Rossi, Sergio; Barnes, David K A; Feij, Bram; Freer, Jennifer; Gottschalk, Milena; Held, Christoph; Kühn, Susanne; Leeger, Rose; Meiburg, Jonathan; Niiranen, Susa; Seifert, Miriam; Mark, Felix Christopher (2026): Semi-quantitative benthic taxon records from Agassiz trawl samples collected in the Weddell Sea (Antarctica) during RV Polarstern cruise PS152 (WOBEC), 2025/2026 [dataset]. 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The project 'Weddell Sea Observatory for Biodiversity and Ecosystem Change' (WOBEC) is supported from April 1, 2024, to March 31, 2027. More information: https://www.biodiversa.eu/2024/04/15/wobec/","awards":[],"studyAreaDescription":"The study area is the Eastern Weddell Sea, a critical region in Antarctica known for its role in global climate regulation and as a potential sanctuary for unique Antarctic species. The area is increasingly affected by climate change, including sea-ice decline, ocean warming, and acidification, necessitating systematic ecosystem monitoring. Despite its ecological significance, there is currently no structured long-term monitoring in this region, highlighting the need for WOBEC's efforts.","designDescription":"WOBEC follows a co-design approach, engaging scientific and societal stakeholders through workshops to develop a comprehensive monitoring framework. The project compiles and makes publicly available historical, recent, and new ecosystem data through platforms like OBIS and EMODnet. It evaluates and applies various monitoring technologies, including autonomous observatories, Earth Observation systems, and traditional ship-based methods. Ecological data will be analyzed to produce scientific models and maps, refining the monitoring framework iteratively. The project will establish a data management plan and standard operating procedures for monitoring Essential Variables (EVs), ensuring long-term sustainability and accessibility of biodiversity data. Results will be disseminated through scientific publications, outreach materials, and engagement with policy-making bodies such as CCAMLR.","relatedProjects":[{"title":"Antarctic bioDiVersity dAta iNfrastruCturE (ADVANCE)","identifier":"RT/23/ADVANCE","contacts":[{"type":"CUSTODIAN_STEWARD","primary":false,"userId":["https://orcid.org/0000-0001-7087-2646"],"firstName":"Yi-Ming","lastName":"Gan","position":[],"email":[],"phone":[],"homepage":[],"address":[]}]}],"abstract":"The Weddell Sea Observatory of Biodiversity and Ecosystem Change (WOBEC) is a collaborative initiative involving 11 institutes from 8 countries, along with stakeholders from business, conservation, and society. The project aims to establish a systematic ecosystem monitoring framework in the Eastern Weddell Sea to provide a baseline for assessing future environmental changes. WOBEC integrates traditional and innovative monitoring techniques to track the impact of climate change on marine ecosystems and contributes to the development of the Weddell Sea Marine Protected Area (WSMPA) under the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR). Key project goals include making biodiversity data publicly accessible, co-developing a scientific monitoring framework with stakeholders, and applying cutting-edge technology for long-term monitoring."},"samplingDescription":{"studyExtent":"Samples were collected on the continental shelf and slope near Kapp Norvegia (eastern Weddell Sea, Antarctica) at water depths ranging from 224 to 1,065 m during RV Polarstern cruise PS152 (WOBEC) in 2025/2026.","sampling":"Please refer to Agassiz Trawl SOP on Zenodo: https://doi.org/10.5281/zenodo.17912454","qualityControl":"All records were validated. Coordinates were converted into decimal latitude and decimal longitude and plotted on map to verify the actual geographical location corresponds to its locality. All scientific names were checked for typo and matched to the species information backbone of Worlds Register of Marine Species (http://marinespecies.org/) and LSID were assigned to each taxa as scientificNameID.Event date and time were verified to be compliant with ISO 8601 standard.","methodSteps":["Please refer to Agassiz Trawl SOP on Zenodo: https://doi.org/10.5281/zenodo.17912454"]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","acknowledgements":"<p>This work was supported by the WOBEC project (Biodiversa2022-341) funded by Biodiversa+, from April 1, 2024 to September 30, 2027. Sampling was conducted during RV Polarstern expedition PS152 to the Weddell Sea (2025/2026). We thank captain Felix Kentges and the crew of Polarstern, Chief Scientist Heike Link, and the scientific party for support during the expedition. We thank Mario La Mesa (ISP-CNR, Ancona) for assistance with species identification.</p><p>This dataset is published as open data with technical support provided by SCAR Antarctic Biodiversity Portal (biodiversity.aq) (BELSPO project RT/23/ADVANCE).</p>","pubDate":"2026-08-20T00:00:00.000+00:00","maintenanceUpdateFrequency":"UNKNOWN","maintenanceDescription":"","license":"http://creativecommons.org/licenses/by/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Event","extensions":["http://rs.tdwg.org/dwc/terms/Occurrence"],"modified":"2026-08-20T08:09:10.923+00:00"},"approximateCounts":{"occurrenceCount":200}}