Stable isotope ratios and elemental contents of C, N and S in benthic organisms sampled during the Belgica 121 campaign in the Gerlache Strait, West Antarctic Peninsula (2019).

Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 53 enregistrements.

2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Voisin A, Lepoint G, Danis B, Guillaumot C, Kristiansen A, Pasotti F, Saucède T, Gan Y, Michel L N (2025). Stable isotope ratios and elemental contents of C, N and S in benthic organisms sampled during the Belgica 121 campaign in the Gerlache Strait, West Antarctic Peninsula (2019).. Version 2.2. SCAR - AntOBIS. Samplingevent dataset. https://doi.org/10.48361/ptbggs

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est SCAR - AntOBIS. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : bd13ee7f-e298-430a-a613-5562f85b057d.  SCAR - AntOBIS publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Ocean Biodiversity Information System.

Mots-clé

Samplingevent; CRUSTACEANS; AMPHIPODS; ISOPODS; ARTHROPODS; ECHINODERMS; SEA STARS; SEA URCHINS; BRITTLE STARS; BIVALVES; GASTROPODS; SEA ANEMONES; SEA SQUIRTS; BRYOZOAN/MOSS ANIMALS; SEGMENTED WORMS (ANNELIDS); SPONGES; ANIMALS/INVERTEBRATES; MACROALGAE (SEAWEEDS); BROWN ALGAE; RED ALGAE; BIODIVERSITY FUNCTIONS; FOOD-WEB DYNAMICS; TROPHIC DYNAMICS; MARINE ECOSYSTEMS; BENTHIC; COASTAL; STABLE ISOTOPES; ORGANIC MATTER; SEDIMENTS; SUSPENDED SOLIDS; SOUTHERN OCEAN; POLAR; SOUTHERN HEMISPHERE; Specimen

Contacts

Couverture géographique

The dataset covers sampling locations in the Gerlache Strait and adjacent coastal sites along the West Antarctic Peninsula.

Couverture taxonomique

Pas de description disponible

Couverture temporelle

Données sur le projet

More info at https://www.belspo.be/belspo/brain-be/projects/FinalReports/RECTO_FinRep.pdf

Les personnes impliquées dans le projet:

Méthodes d'échantillonnage

Please check the paper for more detailed information on sampling and sample preparation. All samples were taken in different stations in the Gerlache Strait, along the West Antarctic Peninsula. Most samples were hand collected by SCUBA divers between 8 and 20 m depth. They included benthic primary producers and biomass-dominant benthic macroinvertebrates belonging to various taxa and feeding guilds: sponges, bryozoa, cnidaria, mollusca, nemertea, annelida, arthropoda and echinodermata and chordata. Suspended particulate organic matter (SPOM), samples were taken using a Niskin bottle. Water was subsequently filtered (3L) on47mm diameter Whatman GF/F glass microfiber filters, and retained SPOM was kept for analysis.

Description des étapes de la méthode:

1. Sample preservation: Benthic organisms were stored in zip lock bags per taxa and grouped in large bags per station
2. Sample preparation: Samples were frozen at -26°C and shipped to the Freshwater and Oceanic Science Unit of research at the University of Liege, Belgium. They were dissected to retrieve the tissue selected for stable isotope analyses (cf. "measurementRemarks" field of the dataset), which was then dried at 50°C. Samples were then homogenised into powder prior to SIA using a mortar and a pestle or a mixer mill (MM301, Retsch, Haan, Germany) depending on toughness. Whenever necessary (cf. "preparations" field of the dataset), carbonates were removed from subsamples by exposing subsamples to 37 % hydrochloric acid vapor. Acidified subsamples were then kept at 50°C until further sample preparation.
3. Stable isotope analysis: The subsamples were then precisely weighed (ca 0.5-1 mg for small samples or 2-4 mg for bigger samples) in 4x4x5mm tin cups, water filters were put in 8x8x15mm cups because of their size. An amount equivalent to sample mass of tungsten oxide was added for each sample. Their elemental composition and their stable isotope values were analyzed with an elemental analyser coupled to a continuous-flow isotope-ratio mass spectrometer. Isotopic ratios were expressed in ‰ using the widespread δ notation (Coplen 2011) and relative to the international references Vienna Pee Dee Belemnite (for carbon), Atmospheric Air (for nitrogen) and Vienna Canyon Diablo Troilite (for sulfur). Sucrose (IAEA-C6; δ13C = -10.80 ± 0.47‰), ammonium sulfate (IAEA-N1; δ15N = 0.40 ± 0.20‰) and silver sulfide (IAEA-S1; δ34S = -0.30‰ and IAEA-S2; δ34S = 22.70 ± 0.20‰) were used as primary analytical standards for stable isotope ratios. Sulfanilic acid acid (Sigma-Aldrich; δ13C = -25.62 ± 0.36‰; δ15N = -0.13 ± 0.55‰; δ34S = 5.87 ± 0.50‰) was used as a secondary analytical standard for stable isotope ratios and as elemental standard. Standard deviations on multi-batch replicate measurements of secondary and internal laboratory standards (sea star tegument), analyzed interspersed with samples (one replicate of each standard every 15 analyses), were 0.3‰ for δ13C and δ15N and 0.5‰ for δ34S.
4. Instrumentation: Stable isotope ratio measurements were performed with a continuous-flow, elemental analysis (vario MICRO cube C-N-S elemental analyzer – Elementar Analysensysteme GMBH, Hanau, Germany), isotope ratio mass spectrometer (IsoPrime100 isotope ratio mass spectrometer – Isoprime, Cheadle, United Kingdom).

Citations bibliographiques

1. Coplen, T.B. (2011), Guidelines and recommended terms for expression of stable-isotope-ratio and gas-ratio measurement results. Rapid Commun. Mass Spectrom., 25: 2538-2560. https://doi.org/10.1002/rcm.5129
2. The Scientific Committee on Antarctic Research. (2023). SCAR Report 42 - September 2022 - SCAR Data Policy (2022). Zenodo. https://doi.org/10.5281/zenodo.7825314
3. Danis, B., Christiansen, H., Guillaumot, C., Heindler, F., Houston, R., Jossart, Q., Lucas, K., Moreau, C., Pasotti, F., Robert. H., Wallis, B., Saucède, T., 2019. Report of the Belgica 121 expedition to the West Antarctic Peninsula. 96 pp https://doi.org/10.13140/RG.2.2.23850.06084

Métadonnées additionnelles