Central Great Barrier Reef shark nursery area survey (NERP TE 6.2, JCU), Australia (2011-2014)

OBIS and OBIS Australia

This dataset contains the catch data from seasonal gillnet and longline surveys of shark nursery areas in the Central Section of the Great Barrier Reef Marine Park (2011-2014).
Sampling occurred seasonally in nine bays along ~ 400 km of the tropical north Queensland coastline: Rockingham, Halifax, Cleveland, Bowling Green, Upstart, Abbott, Edgecumbe, Woodwark/Double and Repulse Bays. Of these nine bays, five were sampled regularly, the others (in italics) were sampled only once as part of a broader survey. Sampling sites were dominated by silty substrates, and mudflat and/or mangrove-lined foreshores. Between October 2011 and November 2013 eight rounds of fisheries-independent surveys were undertaken to collect data on the shark community across the study region. Within each bay sampling occurred randomly within sixteen 0.9 km wide strips running perpendicular to the shore. Two groups of eight strips were placed within each bay to spread the sampling across different habitat types and management zones (i.e. gill-net fishing allowed and gill-net fishing prohibited) where possible. During each round, each bay was sampled over four days allowing for two days of sampling in each group of strips. The bays vary in size and so the relative proportion of area sampled varied between bays.

N/A

This dataset was downloaded from OBIS (https://obis.org/). 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:
https://obis.org/dataset/967f706a-292c-487a-a4bd-d477ff5efeaa
Data Provider's dataset page:
http://ogc-act.csiro.au/ipt/resource?r=jcu_gbr_reef_shark_nursery

The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

Overview

Attributes are defined by OBIS.

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
oid	Internal ID
id	Record ID
dataset_id	Dataset ID
scientificname	Scientific name
vernacularname	Vernacular name
aphiaid	Aphia ID
taxonrank	taxononic rank
individualcount	Group size / individual count
eventdate	Event date (precision varies)
eventtime	Event time
decimallatitude	Latitude in decimal degrees
decimallongitude	Longitude in decimal degrees
coordinateprecision	Coordinate precision
catalognumber	Catalog number
collectioncode	Collection code
occurrencestatus	Occurrence status
basisofrecord	Basis of record (HumanObservation / MachineObservation)
modified	Date/time the record was modified
node_id	Node ID
occurrenceid	Occurrence ID
occurrenceremarks	Occurrence remarks
eventid	Event ID
institutioncode	Institution code
lifestage	Life stage
sex	Sex of the animal if known
species	Species by provider
datasetid	Dataset ID by provider
country	Country
locality	Location of ocean
waterbody	Details of ocean
dropped	Flag indicating the record was dropped (always false)
absence	Flag indicating the record represents the absence of the species (always false)
marine	Flag indicating the record is for marine life (always true)
obs_datetime
tprecision
on_land
date_in_future