This dataset contains the non-freshwater specimens from the Nonindigenous Aquatic Species (NAS) database, which was established as a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The NAS program provides scientific reports, online/real-time queries, spatial data sets, regional contact lists, and general information. The data is made available for use by biologists, interagency groups, and the general public. The geographical coverage is the United States.

Published: June 17, 2016 at 22:20

URL: https://ipt-obis.gbif.us/resource?r=usgs_nas_nonfish

Pam Fuller
U.S. Geological Survey

Abigail Benson

6,445

occurrence records

356

taxa

322

species

Taxa

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	6,445		100.0%
maximumDepthInMeters	6,445		100.0%
minimumDepthInMeters	6,445		100.0%
occurrenceStatus		6,445	100.0%
scientificNameID	53	6,392	100.0%

Quality flags

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

Flag	Records
NO_DEPTH	6,445	100.0%
ON_LAND	1,784	27.7%
NO_MATCH	238	3.7%
WORMS_ANNOTATION_REJECT_AMBIGUOUS	83	1.3%
WORMS_ANNOTATION_RESOLVABLE	73	1.1%
NO_ACCEPTED_NAME	13	0.2%

Nonindigenous Aquatic Species (NAS) Database Non-freshwater Specimens

Taxa

Missing and invalid fields

Quality flags

Measurement types

DNA derived data