Darwin Harbour Habitat Mapping Program: Video annotation

This resource contains a video annotation record for the greater Darwin Harbour region as part of a baseline habitat mapping program for the Darwin Harbour region (including Bynoe Harbour) through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government’s Department of Environment and Natural Resources (NTG-DENR) and co-investment from Geoscience Australia (GA), Australian Institute of Marine Science (AIMS). The intent of this program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The video annotation record was derived from a compilation of multiple surveys undertaken by GA, AIMS and NTG-DENR between 2011 and 2017, including GA0333 (Siwabessy et al., 2015), GA0341 (Siwabessy et al., 2015), GA0351/SOL6187 (Siwabessy et al., 2016), GA4452/SOL6432 (Siwabessy et al., 2017), GA0356 (Radke et al., 2017), and GA0358 and GA0359 (Radke et al., 2018).

Identification info

Date (Creation): 2019-02-20

Date (Publication): 2020-01-15T03:35:22

Citation identifier: Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/127195

Identifier

Codespace: Digital Object Identifier

Cited responsible party

Role	Organisation / Individual Name	Details
Author	Smit, N.

Status: Completed

Spatial representation type

Topic category

Geoscientific information

Extent

Temporal extent

Time period: 2011 2017

Extent

Maintenance and update frequency: As needed

Resource format

Title: Administration to complete

Date

Edition: Administration to complete

Distributor contact

Role	Organisation / Individual Name	Details
Distributor	Geoscience Australia	Voice

Resource format

Title: Product data repository: Various Formats

Website: Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Keywords

Habitat Mapping

Keywords

Marine Environmental Baselines

Keywords

Marine Survey

Keywords

Exclusive Economic Zone

Keywords

Published_External

Resource constraints

Title: Creative Commons Attribution 4.0 International Licence

Alternate title: CC-BY

Edition: 4.0

Website

http://creativecommons.org/licenses/

Access constraints: License

Use constraints: License

Resource constraints

Title: Australian Government Security ClassificationSystem

Edition date: 2018-11-01T00:00:00

Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification: Unclassified

Language: English

Character encoding: UTF8

Distribution Information

Distributor contact

Role	Organisation / Individual Name	Details
Distributor	Commonwealth of Australia (Geoscience Australia)	Voice

OnLine resource: Download the data (xlsx) [68 MB]

Download the data (xlsx) [68 MB]

OnLine resource: Link to collection record

Link to collection record

Resource lineage

Statement

Between September and December 2017 143 towed video transects were undertaken during neap tides. A spatially balanced, unequal inclusion probabilities habitat survey design using GRTS (Generalized Random Tessellation; Stevens & Olsen 2004) was employed to allocate the starting points for towed video transects for Darwin Harbour and Bynoe Harbour. A Seabotix LBV 150 Remotely Operated Vehicle (ROV) and Geo Oceans Towed Video system was used to collect video and still images of the seafloor. All the transects were typically 1.5 km long and laid from shallow to deep water to capture the gradient of biological communities. The video system was towed generally at speeds between 1 and 2 knots, approximately 1 m above the ground and tilted downward to cover the immediate benthos.

The video signal was transferred to the surface via an umbilical cable where it was monitored and analysed in real-time using dedicated Go VisionsTM software, time-stamped and synchronised with the boat’s GPS data that were recorded and 1 s intervals.

The live video-feed was annotated according to predetermined classification scheme, based on the CATAMI classification scheme ( http://catami.org/classification) into a relational database. The data was quality controlled by benthic ecologist at a later stage and exported to a flat table as an excel spreadsheet and csv text file.

These data were used to model predictive habitat maps based on broad community types (see further information: https://pid.geoscience.gov.au/dataset/ga/127389; https://pid.geoscience.gov.au/dataset/ga/127214; https://pid.geoscience.gov.au/dataset/ga/127221; https://pid.geoscience.gov.au/dataset/ga/127228; https://pid.geoscience.gov.au/dataset/ga/127204; https://pid.geoscience.gov.au/dataset/ga/127234; https://pid.geoscience.gov.au/dataset/ga/127242).