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East Weddell Sea echinoids from the JR275 expedition.

Saucède T, Griffiths H, Moreau C, Jackson JA, Sands C, Downey R, Reed A, Mackenzie M, Geissler P, Linse K - Zookeys (2015)

Bottom Line: The Cidaridae (sub-family Ctenocidarinae) and Schizasteridae are the two most speciose families in the dataset.They comprise seven and nine species respectively.This is illustrative of the overall pattern of echinoid diversity in the Southern Ocean where 65% of Antarctic species belong to the families Schizasteridae and Cidaridae (Pierrat et al. 2012).

View Article: PubMed Central - HTML - PubMed

Affiliation: UMR CNRS 6282 Biogéosciences, Université de Bourgogne, 6, bd Gabriel 21000, Dijon, France.

ABSTRACT
Information regarding the echinoids in this dataset is based on the Agassiz Trawl (AGT) and epibenthic sledge (EBS) samples collected during the British Antarctic Survey cruise JR275 on the RRS James Clark Ross in the austral summer 2012. A total of 56 (1 at the South Orkneys and 55 in the Eastern Weddell Sea) Agassiz Trawl and 18 (2 at the South Orkneys and 16 in the Eastern Weddell Sea) epibenthic sledge deployments were performed at depths ranging from ~280 to ~2060 m. This presents a unique collection for the Antarctic benthic biodiversity assessment of an important group of benthic invertebrates. In total 487 specimens belonging to six families, 15 genera, and 22 morphospecies were collected. The species richness per station varied between one and six. Total species richness represents 27% of the 82 echinoid species ever recorded in the Southern Ocean (David et al. 2005b, Pierrat et al. 2012, Saucède et al. 2014). The Cidaridae (sub-family Ctenocidarinae) and Schizasteridae are the two most speciose families in the dataset. They comprise seven and nine species respectively. This is illustrative of the overall pattern of echinoid diversity in the Southern Ocean where 65% of Antarctic species belong to the families Schizasteridae and Cidaridae (Pierrat et al. 2012).

No MeSH data available.


Sample locations for JR275 echinoid records.
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Figure 1: Sample locations for JR275 echinoid records.

Mentions: Sampling description: A single test location off the South Orkney Islands and a further six locations in the Eastern Weddell Sea at different depths ranging from 279 to 2058m have been sampled using an Agassiz Trawl (AGT) and an epibenthic sledge (EBS). Most of the Weddell Sea deployments were made along two transects, one running from south to north along the edge of the Filchner Trough and one running from west to east out of the Filchner Trough onto the shallower shelf. Two further localities in overdeepened basins close to the Brunt Ice shelf were sampled (Figure 1, Stations 33-40). At each site, three replicate Agassiz trawls (individual stations) were taken and where the substrate was suitable (not too rocky) a single EBS deployment was conducted. The JR275 cruise report is available from the British Oceanographic Data Centre (www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/report/10598).


East Weddell Sea echinoids from the JR275 expedition.

Saucède T, Griffiths H, Moreau C, Jackson JA, Sands C, Downey R, Reed A, Mackenzie M, Geissler P, Linse K - Zookeys (2015)

Sample locations for JR275 echinoid records.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4443523&req=5

Figure 1: Sample locations for JR275 echinoid records.
Mentions: Sampling description: A single test location off the South Orkney Islands and a further six locations in the Eastern Weddell Sea at different depths ranging from 279 to 2058m have been sampled using an Agassiz Trawl (AGT) and an epibenthic sledge (EBS). Most of the Weddell Sea deployments were made along two transects, one running from south to north along the edge of the Filchner Trough and one running from west to east out of the Filchner Trough onto the shallower shelf. Two further localities in overdeepened basins close to the Brunt Ice shelf were sampled (Figure 1, Stations 33-40). At each site, three replicate Agassiz trawls (individual stations) were taken and where the substrate was suitable (not too rocky) a single EBS deployment was conducted. The JR275 cruise report is available from the British Oceanographic Data Centre (www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/report/10598).

Bottom Line: The Cidaridae (sub-family Ctenocidarinae) and Schizasteridae are the two most speciose families in the dataset.They comprise seven and nine species respectively.This is illustrative of the overall pattern of echinoid diversity in the Southern Ocean where 65% of Antarctic species belong to the families Schizasteridae and Cidaridae (Pierrat et al. 2012).

View Article: PubMed Central - HTML - PubMed

Affiliation: UMR CNRS 6282 Biogéosciences, Université de Bourgogne, 6, bd Gabriel 21000, Dijon, France.

ABSTRACT
Information regarding the echinoids in this dataset is based on the Agassiz Trawl (AGT) and epibenthic sledge (EBS) samples collected during the British Antarctic Survey cruise JR275 on the RRS James Clark Ross in the austral summer 2012. A total of 56 (1 at the South Orkneys and 55 in the Eastern Weddell Sea) Agassiz Trawl and 18 (2 at the South Orkneys and 16 in the Eastern Weddell Sea) epibenthic sledge deployments were performed at depths ranging from ~280 to ~2060 m. This presents a unique collection for the Antarctic benthic biodiversity assessment of an important group of benthic invertebrates. In total 487 specimens belonging to six families, 15 genera, and 22 morphospecies were collected. The species richness per station varied between one and six. Total species richness represents 27% of the 82 echinoid species ever recorded in the Southern Ocean (David et al. 2005b, Pierrat et al. 2012, Saucède et al. 2014). The Cidaridae (sub-family Ctenocidarinae) and Schizasteridae are the two most speciose families in the dataset. They comprise seven and nine species respectively. This is illustrative of the overall pattern of echinoid diversity in the Southern Ocean where 65% of Antarctic species belong to the families Schizasteridae and Cidaridae (Pierrat et al. 2012).

No MeSH data available.