Dataset

NCOS1959_Mollusca

SEA OBIS Open in mapper Explore occurrences

The Database of NCOS1959_Mollusca includes 16008 records of Mollusca specimen collected in the Marine Biological Museum of Chinese Academy of Sciences during the National Comprehensive Oceanographic Survey (NCOS) from 1958 to1960. The surveyed area covered the coast of China Seas, including the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea, almost 1200 sampling stations. Most taxa of marine invertebrates were obtained in this survey.

Published: November 12, 2018 at 15:23

URL: http://ipt.iobis.org/seaobis/resource?r=ncos1959_mollusca

16,007
occurrence records
759
taxa
568
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 16,007
100.0%
eventDate 16,007
100.0%
maximumDepthInMeters 16,007
100.0%
minimumDepthInMeters 16,007
100.0%
occurrenceStatus 16,007
100.0%
scientificNameID 2,026 56
13.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 16,007
100.0%
NO_MATCH 1,568
9.8%
NO_ACCEPTED_NAME 178
1.1%
WORMS_ANNOTATION_RESOLVABLE 131
0.8%
ON_LAND 40
0.2%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 1
0.0%

Measurement types

DNA derived data