This polygon layer represents marine habitat in the East Gippsland region mapped from satellite imagery and aerial photography with underwater video ground-truthing. The mapping was funded by Natural Heritage Trust to increase the capacity of natural resource managers to make informed decisions regarding asset identification, risk assessment, and management action targets for nearshore marine habitats in the region.
Search Words:
Oceans
Publication Date:
29 January 2018
Dataset Status:
The entire mapping region is covered by this layer
Completeness Verification: The dataset has been verified for all attributes.
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
Unrestricted
Data Existence:
Metadata Name
Descriptions
Resource Name:
EAST_GIPPS_MARINE_HAB_2009
Title:
East Gippsland Marine Habitats November 2009
Anzlic ID:
ANZVI0803003974
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
This polygon layer represents marine habitat in the East Gippsland region mapped from satellite imagery and aerial photography with underwater video ground-truthing. The mapping was funded by Natural Heritage Trust to increase the capacity of natural resource managers to make informed decisions regarding asset identification, risk assessment, and management action targets for nearshore marine habitats in the region.
Search Words:
Oceans
Purpose:
The purpose of this dataset is to improve knowledge about the location, spatial distribution, condition, and extent of shallow marine habitats (<15 m) and associated biodiversity in the Twofold Shelf bioregion. The project filled a knowledge gap and increased the capacity of natural resource managers to make informed decisions concerning asset identification, risk assessment, and management action targets for nearshore marine habitats in the region.
Geographic Extent Polygon:
Geographic Bounding Box:
Beginning to Ending Date:
2003-12-14 - 2008-07-16
Maintainence and Update Frequency:
As needed
Stored Data Format:
Available Format(s) Types:
DIGITAL - All major formats available
Positional Accuracy:
Positional accuracy of the mapping is dependent on the accuracy of the source aerial photography (see the source imagery's metadata for more information), and the accuracy of the habitat boundaries is related to the mapping accuracy, which was determined by comparison with video-ground-truthing. No quantitative measure of positional accuracy was undertaken.
Attribute Accuracy:
The habitat layer attributes describe the dominant habitat (substratum). Overall mapping classification accuracy was determined by generating an error matrix from the video ground-truthing overlayed on the mapping. The overall mapping accuracy was 80.3% based on 127 video ground-truthing points. A lower producer's accuracy in classifying patchy reef (8% based on 25 video ground-truthing points) was primarily due to the different classification scale between the mapping from aerial imagery and underwater video interpretation. Areas classified as patchy reef in the video may have been mapped as multiple small separate areas of reef separated by sand. The mapping accuracy for all reef combined was 94% (80 of 85 video sites).
Logical Consistency:
Polygon topology was created in ArcInfo and all polygons were checked to ensure they had labels and an attribute value.
Data Source:
Dataset Source: Some data was obtained from aerial photography flown for DSE on 20 November 2007. For the areas not covered by this aerial photography, QuickBird satellite imagery was acquired from the DigitalGlobe archives through Sinclair Knight Merz. This imagery was captured on the following dates: 14 Dec 2003 (Long Reef region from The Skerries to Sandpatch Point), 21 Aug 2005 (Gabo Island region), 8 Sep 2005 (Seal Cove and Mallacoota regions), 7 Dec 2005 (Long Reef region from Benedore River to Little Rame Head), 26 Sep 2006 (Ewing Marsh region), 6 Oct 2007 (Marlo region) and 6 Nov 2007 (Pearl Point region).
Dataset Originality: Primary & Derived
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2021-11-29
Additional Metadata:
Relationship to other Datasets: This dataset includes basic habitat attributes relating to habitat substratum with related video ground-truthing data providing further information relating to biota.
Current Design Issues: This dataset was created to improve knowledge about the location and spatial distribution of shallow marine habitats in the East Gippsland region. The mapping covers the marine habitats to a depth of up to 15 m, dependent on the water clarity in the aerial imagery.
Related Documents: None
Underwater video ground-truthing shallow marine habitats East Gippsland.