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Staying cool also has consequences: increased sea ice cover disrupts food web structure in East Antarctica-Data

Latest version published by SCAR - AntOBIS on Apr 8, 2019 SCAR - AntOBIS

Samples collected in the framework of a study to understand implications of these environmental changes for coastal Southern Ocean ecosystemsThis study looked at benthic food web structure on the coasts of Adélie Land during an event of unusually high sea ice cover (i.e. two successive austral summers without seasonal break-up). Using time-tested integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) and state-of-the-art data analysis tools (Bayesian ecological models), exploring feeding habits of benthic macroinvertebrates communities. In total, 28 taxa spanning most present animal groups and functional guilds were investigated.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 750 records.

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Data as a DwC-A file download 750 records in English (28 KB) - Update frequency: unknown
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How to cite

Researchers should cite this work as follows:

Michel L (2019): Staying cool also has consequences: increased sea ice cover disrupts food web structure in East Antarctica-Data. v1.1. SCAR - AntOBIS. Dataset/Occurrence. https://ipt.biodiversity.aq/resource?r=ddu_isotopes_verso_2013_2015&v=1.1

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is SCAR - AntOBIS. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 90f2713a-79ac-4d96-9a66-889a5fb9abb1.  SCAR - AntOBIS publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biogeographic Information System.

Keywords

Occurrence; Southern Ocean; Sea ice; benthic invertebrates; food web; trophic ecology

Contacts

Who created the resource:

Loïc Michel
Researcher
University of Liege, Laboratory of Oceanology

Who can answer questions about the resource:

Loïc Michel
Researcher
University of Liege, Laboratory of Oceanology BE
Bruno Danis
Researcher
Université Libre de Bruxelles, Marine Biology Department BE
Philippe Dubois
Researcher
Université Libre de Bruxelles, Marine Biology Department BE
Marc Eléaume
Researcher
Muséum national d’Histoire naturelle FR
Jérôme Fournier
Researcher
Muséum National d'Histoire Naturelle, Station de Biologie Marine, 29182 FR
Cyril Gallut
Sorbonne Université FR
Philip Jane
Aquarium de Paris - Cinéaqua FR
Gilles Lepoint
University of Liege, Laboratory of Oceanology BE

Who filled in the metadata:

Anton Van de Putte

Who else was associated with the resource:

User
Anton Van de Putte

Geographic Coverage

East Antarctica, Adélie Land, Dumont-d’Urville research station

Bounding Coordinates South West [-67, 139], North East [-66.5, 141]

Taxonomic Coverage

No Description available

Genus  Acodontaster,  Golfingia,  Harmothoe,  Hemigellius,  Heterocucumis,  Margarella,  Marseniopsis,  Deontostoma,  Ophiura,  Perkinsiana,  Polycirrus,  Staurocucumis
Species  Adamussium colbecki,  Ammothea carolinensis,  Charcotia obesa,  Decolopoda australis,  Demospongiae,  Diplasterias brucei,  Flabegraviera mundata,  Himantothallus grandifolius,  Homaxinella balfourensis,  Isotealia antarctica,  Laternula elliptica,  Mycale acerata,  Odontaster validus,  Parborlasia corrugatus,  Phyllophora antarctica,  Pygoscelis adeliae guano,  Saliasterias brachiata,  Sterechinus neumayeri,  Trophonella longstaffi
Unranked  Sympagic algae

Temporal Coverage

Start Date / End Date 2014-01-22 / 2014-01-26
Start Date / End Date 2014-12-17 / 2015-01-12

Project Data

This research was funded by the Belgian Science Policy Office (BELSPO) through the vERSO project (www.rectoversoprojects, contract nr. BR/132/A1/vERSO).

Title vERS0
Study Area Description Access to Dumont-d’Urville station was granted through REVOLTA 1124, a research program cofunded by the French Polar Institute Paul-Emile Victor (IPEV), MNHN, Sorbonne Université and CNRS. Authors warmly thank all involved IPEV staff for their efficient logistical support during the planning and execution of the field campaigns.

The personnel involved in the project:

Loïc Michel

Sampling Methods

Six items (producers or organic matter pools) were identified as potential food sources for primary consumers. Sympagic algae, that mostly occurred as several cm long filaments, were sampled by SCUBA divers by scraping the lower surface of fast ice. The dominant macroalgae, the large Phaeophyceae Himantothallus grandifolius and the Rhodophyceae Phyllophora antarctica, were hand-collected by SCUBA divers. Benthic biofilm was collected by scraping rocks in situ. It was scarce in 2013-2014 but extremely abundant in 2014-2015 (thick layer of several cm covering rocks but also macroalgae and sponges, supporting information S2). Seawater for suspended particulate organic matter (SPOM) was collected through the diving holes, at 10 m depth using a Niskin bottle. 195 Seawater was then pre-sieved to remove items larger than 5 mm, and filtered on pre-combusted (4h at 400 °C) glass fiber filters (Whatman GF/F, sieve size 0.7 μm). For each SPOM sample, 20 liters of seawater were filtered. Finally, samples of the abundant deposits of guano surrounding the extensive colonies of Adélie penguins (Pygoscelis adeliae) were hand collected on land, in vicinity of the diving holes.

Study Extent Sampling took place in the surroundings of Dumont-d'Urville station (French Polar Institute Paul-Emile Victor - IPEV), on Petrels Island (Adélie Land, East Antarctica) during the austral summers of 2013-2014 (sampling dates: 22 - 26/01/2014) and 2014-2015 (sampling dates: 17/12/2014 - 12/01/2015). During these two austral summers, extreme sea ice conditions occurred, as fast ice did not undergo seasonal breakup for two successive years (ice thickness fluctuating between 40 and over 200 cm during summer, cf. supporting information S1). Two sampling sites were chosen. Site 1 ("Anse du Lion"; 140.003° E, 66.661° S) was visited during both sampling campaigns, while site 2 ("Cap des Eléphants"; 139.997° E, 66.667° S) was sampled only in 2014-2015. In both sampling campaigns, both sites were covered by a thick layer of fast ice (from around 100 to over 200 cm, supporting information S1), and holes were drilled to allow access to the sea

Method step description:

  1. /

Additional Metadata

Alternative Identifiers https://ipt.biodiversity.aq/resource?r=ddu_isotopes_verso_2013_2015