Dataset

Underwater fish visual census in the Azores from 1997 to 2015

EurOBIS MeasurementOrFact Open in mapper Explore occurrences

Fish assemblages surveyed by using underwater visual censuses (UVC) down to 40 m. Transects were performed between 1997 and 2015 in the Azores, Portugal. All mobile fish were identified to the lowest possible taxon. Dates, geographic coordinates and species recorded are provided.

Citation: Afonso P; Institute of Marine Research (IMAR - Azores), Portugal; Department of Oceanography and Fisheries (DOP) - UAc, Portugal (2016): Underwater fish visual census in the Azores from 1997 to 2015. https://dx.doi.org/10.14284/210

Published: September 17, 2025 at 10:09

URL: http://ipt.vliz.be/eurobis/resource?r=scuba_diving_visual_census

5,775
occurrence records
5,775
measurements and facts
74
taxa
69
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 5,775
100.0%
minimumDepthInMeters 5,775
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 5,775
100.0%
ON_LAND 64
1.1%
NOT_MARINE 2
0.0%
NO_ACCEPTED_NAME 2
0.0%

Measurement types

DNA derived data