Dataset

MNA Italica 2004_Rauschert dredge_Ross_sea_Mollusca_lgp

Antarctic OBIS Open in mapper Explore occurrences

Information regarding the molluscs in this dataset is based on the Rauschert dredge samples collected during the Latitudinal Gradient Program (LGP) on board the R/V “Italica” in the Ross Sea (Antarctica) in the austral summer 2004. A total of 18 epibenthic dredge deployments/samplings have been performed at four diffrent locations at depths ranging from 84 to 515m by using a "Rauschert" dredge with a mesh size of 500μm. In total 8,359 specimens have been collected belonging to 161 species and corresponding to 505 species distributional records. Of these, in order of abundance, 5,965 specimens were Gastropoda (accounting for 113 species), 1,323 were Bivalvia (accounting for 36 species), 949 were Aplacophora (accounting for 7 species), 74 specimens were Scaphopoda (3 species), 38 were Monoplacophora (1 species) and, finally, 10 specimens were Polyplacophora (1 species). This data set represent the first large-scale survey of benthic micromolluscs for the area and provides important information about the distribution of several species which have been seldom or never recorded before in the Ross Sea. All vouchers are permanently stored at the Italian National Antarctic Museum (MNA), Section of Genoa, enabling future comparison and crosschecking. This material is also currently under study, from a molecular point of view, by the barcoding project "BAMBi" (PNRA 2010/A1.10).

Citation: Ross Sea Mollusca form the Latitudinal Gradient Program: Italica 2004 Rauschert dredge samples

Published: October 05, 2017 at 13:02

URL: https://ipt.biodiversity.aq/resource?r=ross_sea_mollusca_lgp

849
occurrence records
131
taxa
110
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 849
100.0%
eventDate 849
100.0%
maximumDepthInMeters 849
100.0%
minimumDepthInMeters 849
100.0%
occurrenceStatus 849
100.0%
scientificNameID 849
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 849
100.0%
NO_MATCH 49
5.8%
WORMS_ANNOTATION_RESOLVABLE 3
0.4%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 1
0.1%

Measurement types

DNA derived data