Study area description
This dataset lists the species that have been collected by
deploying for the first time a Rauschert dredge in the Ross Sea (Rehm et al. 2006).
Samples were obtained during the Austral summer 2004 in the framework of the 19th
PNRA Antarctic expedition, on board the R/V “Italica”. The study area was the continental
shelf along the latitudinal transect comprised between Cape Adare (~71°S) and Terra
Nova Bay (~75°S). The Rauschert dredge was deployed in its ‘standard’ structure, i.e.
having a mesh size of 500μm and with an opening of 0.5 m (Lörz et al, 1999). The dredge
has been towed at a mean velocity of 1 knot to collect benthic samples at eighteen
stations, comprised between 84 and 515m of depth. More details about sampling stations
are reported in Rehm et al. (2006).
In the past decade, the Ross Sea has been the area studied by the
Latitudinal Gradient Program (LGP; www.lgp.aq) which aimed at: i) understanding the
complex ecosystems that exist along the Victoria Land coast; and ii) determining the
effects of environmental change on these ecosystems; iii) maximising the transfer of
information and ideas, by utilising joint logistic facilities. To achieve these targets, two
temporally parallel research voyages took place during the Austral summer 2004: one on
board the Italian RV “Italica” and one on board the RV “Tangaroa” (“BioRoss” voyage,
TAN0402) organized, respectively, by NIWA (National Institute of Water and Atmospheric
Research, Wellington) and PNRA (Antarctic National Research Project). The LGP
contributes to the SCAR biology programme Evolution and Biodiversity in the Antarctic
The present molluscs dataset has been formatted in order to fulfil the standards required
by the OBIS schema (http://iobis.org/data/schema-and-metadata) according the SCARMarBIN
Data Toolkit (available at http://www.scarmarbin.be/documents/SM-FATv1.zip).
The dataset was uploaded in the ANTOBIS database (the geospatial component of SCARMarBIN),
and the taxonomy was matched against the Register of Antarctic Marine
Species, using the Taxon Match tool (http://www.scarmarbin.be/rams.php?p=match). The
dataset, therefore, meets the Darwin Core requirements and was designed around this
data schema. Data from both the RV “Italica” and the RV “Tangaroa” (“BioRoss”,
TAN0402) voyages were published in Schiaparelli et al. (2006). A detailed analysis of the
distribution of mollusc species sampled by the Rauschert dredge is in Ghiglione et al.
This study is part of the Project 2002/8.6 (“The coastal ecosystem of Victoria
Land Coast: distribution and structure along a latitudinal gradient”) funded by the Italian
National Antarctic Research Program (PNRA).