NESP MBH A1 Euryhaline Elasmobranchs Fishing Database

Peter Kyne, Charles Darwin University (CDU)

Dataset credit

OBIS and OBIS Australia


Primary contact Peter Kyne Charles Darwin University (CDU) N/A


Kyne, P. 2020. NESP MBH A1 Euryhaline Elasmobranchs Fishing Database. Data downloaded from OBIS-SEAMAP ( on yyyy-mm-dd and originated from OBIS (


This database contains sampling effort, catch records, biological data, and water quality data for sampling and catches of elasmobranchs in northern Australian rivers, estuaries and coasts undertaken under the National Environmental Research Program (NERP) Marine Biodiversity Hub Project 2.4 'Supporting Management of Listed and Rare Species'. and the National Environmental Science Program (NESP) Marine Biodiversity Hub Project A1 'Northern Australian Hotspots for the Recovery of Threatened Euryhaline Elasmobranchs'. Surveys using gillnets and rod-and-line were undertaken in the Top End region of the Northern Territory and the Kimberley region of Western Australia. Selected animals were tagged for movement ecology, habitat use and mortality estimates (acoustic telemetry), and tissue samples were collected from all fish for molecular analyses (population genetics and close-kin mark-recapture).
Sampling was undertaken with a variety of fishing gear, mainly gillnet (4–6 inch stretched mesh size) and rod-and-line (medium-heavy shark fishing gear; small-medium hook sizes, 4/0–10/0). Longlines and cast nets were also used on occasion. Sawfish were targeted using gillnets, and river sharks mostly with rod-and-line. Processing catch included taking measurements, determining sex through external examination, photographing each individual, and collecting a small tissue sample from the inner margin of the pectoral fin (for molecular analyses). All individuals were tagged with a PIT tag for individual identification, and a subset was tagged with VEMCO acoustic tags (V9, V13 or V16) for telemetry studies. All fish were released at the site of capture, as was any bycatch.
Data sourced from



Supplemental information

This dataset was downloaded from OBIS ( The records for only marine mammals, seabirds, sea turtles and rays and sharks were extracted. Records with no longitude/latitude or no date (eventDate) were excluded.
OBIS dataset page:
Data Provider's dataset page:




This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidInternal ID
idRecord ID
dataset_idDataset ID
scientificnameScientific name
vernacularnameVernacular name
aphiaidAphia ID
taxonranktaxononic rank
individualcountGroup size / individual count
eventdateEvent date (precision varies)
eventtimeEvent time
decimallatitudeLatitude in decimal degrees
decimallongitudeLongitude in decimal degrees
coordinateprecisionCoordinate precision
catalognumberCatalog number
collectioncodeCollection code
occurrencestatusOccurrence status
basisofrecordBasis of record (HumanObservation / MachineObservation)
modifiedDate/time the record was modified
node_idNode ID
occurrenceidOccurrence ID
occurrenceremarksOccurrence remarks
eventidEvent ID
institutioncodeInstitution code
lifestageLife stage
sexGender of the animal if known
speciesSpecies by provider
datasetidDataset ID by provider
localityLocation of ocean
waterbodyDetails of ocean
droppedFlag indicating the record was dropped (always false)
absenceFlag indicating the record represents the absence of the species (always false)
marineFlag indicating the record is for marine life (always true)
Marine mammals0
Sea turtles0
Rays and sharks260
Other species0
Non spatial0
Non species0
Date, Begin2012-01-21
Date, End2016-12-07
Temporal prec.111000
Latitude-17.35 - -12.21
Longitude123.58 - 134.57
Coord. prec.6 decimal digits
Data typeAnimal sighting
Traveled (km)0
Contr. throughiOBIS
Sharing policy CC-BY (All)
Also available in None
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics