Dataset

Spotted Handfish (Brachionichthys hirsutus) - GPS Underwater Visual Census - 2014-2018 repeated population surveys

OBIS Australia MeasurementOrFact Open in mapper Explore occurrences

Dive surveys were conducted in 2014 and the same sites resurveyed annually until 2018, to establish a baseline and monitor the status of the critically endangered spotted handfish (Brachionichthys hirsutus) population. This dataset is a summary of all surveys season 2014 to 2018 in which the 11 sites across the Derwent Estuary and D'Entrecasteaux Channel were assessed. The data describes the search effort (transect length, swathed area) and counts of handfish observed on each transect, including size measurements (total length) and depth records for each sighted fish. Note that the specific latitude and longitude of individual fish have been redacted due to the vulnerable status of the species. Contact the point of contact listed in this record for more information.

Citation: Link to originating metadata record. http://metadata.imas.utas.edu.au/geonetwork/srv/eng/metadata.show?uuid=51702b57-d4e4-4477-b199-b3485675f66c

Published: June 07, 2022 at 03:20

URL: https://www.marine.csiro.au/ipt/resource?r=csiro_handfish

641
occurrence records
418
measurements and facts
1
taxa
1
species

Taxa

Missing and invalid fields

Field Missing Invalid
decimalLatitude 43
6.7%
decimalLongitude 43
6.7%
maximumDepthInMeters 225
35.1%
minimumDepthInMeters 225
35.1%

Quality flags

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

Flag Dropped Records
NO_DEPTH 225
35.1%
NO_COORD 43
6.7%

Measurement types

DNA derived data