IMAS Metadata Catalogue
Victorian Statewide Marine Habitat Map 2023
The Statewide Marine Habitat Map 2023 was developed by DEECA applying novel machine learning methods that model and predict habitat distributions as well as a mosaic of former mapping products (listed below). The Statewide map represents 24 marine and coastal habitats complexes at Level 3, Victoria's Combined Biotope Classification Scheme (CBiCS) described by Edmunds and Flynn (2015, 2018; 2021). The final map comprises of 83% its area from predictive modelling, with the remaining 17% of area from synthesised existing habitat maps.
Predictive Model: A total of 32,998 habitat survey sites (ground-truth records) were used within the model, along with 28 environmental properties mapped at a 10m resolution (including a Digital Elevation Model DEM (VCDEM2021), computed benthic terrain characteristics (toolkit: Walbridge et al. 2018), Chlorophyl a (IMOS 2000a), Sea Surface Temperature SST (IMOS 2000a), Net Primary Productivity NPP (IMOS 2000b), Sediments (Geoscience Australia; Li et al. 2011a,b,c), waves (Liu et al. 2022). To predict the distribution of habitats across Victorian waters the powerful and flexible Random Forest machine learning algorithm was applied. Random Forest is an ensemble model using bagging as the ensemble method and decision trees as the individual model (Breiman 2001). The modelling produced an accuracy (Out-of-bag) of 89%.
Map Synthesis: A mosaic of former mapping products that provided higher resolution mapping by aerial imagery, field observations and high-resolution modelling were integrated into the map, classifying habitat according to the CBICS habitat classification scheme at level 3. Assessed and synthesised maps and citations include: Corangamite Coast Marine Habitat December 2009 (ANZVI0803005530); East Gippsland Marine Habitats November 2009 (ANZVI0803003974); Discovery Bay Marine National Park habitat mapping 2006 (ANZVI0803004053); Portland Coastal Habitats (ANZVI0803004236) ; Corner Inlet Mapping Marine National Park North and South 2004 (ANZVI0803004051) ; Merri Marine Sanctuary 2004 (ANZVI0803004058); Western Port Bay Biotope Mapping Fathom Pacific (2016) CBiCS-Mapping. Central Victoria Coastal Habitats (ANZVI0803004135); Mallacoota Coastal Habitats (ANZVI0803004235); Western Port Rhodolite (ANZVI0803005430) & Western Port Biogenic Reefs; Port Phillip Bay Habitat Map 2021 (ANZVI0803009278); Saltmarsh and Mangrove Habitats; DELWP 2021 Statewide Marine Habitat Map 2021 (ANZVI0803009286) and relevant citations: Ball (1999), Ball et al. (2010). Ball & Blake (2007a), Ball & Blake (2007b), Blake and Ball (2001), Blake et al. (2013), Boon et al. (2011), Cohen et al (2000), Deakin Marine Mapping (Zavalas, R et al. 2018), DELWP (1994), Edmunds &Flynn (2015), Fathom Pacific (2020), Ford et al (2016), GeoHab Victoria Estuaries Geomorphology (2010), Ierodiaconou 2007, Ierodiaconou et al. 2018, Mazor et al. (2021), Monk et al. (2011), Poore (1992), Roob and Ball (1997), Victoria Department of Transport (1999), Young et al. 2022, Zavalas, R et al. 2018.
Applications: The Statewide Marine Habitat Map 2023 provides broad habitat complexes across the state and provides greater knowledge of the ecological diversity across Victoria¿s waters. The map should be used at broad scales of >25 m, and where information of larger habitat complexes is needed. This work can support the management of large-scale habitats, their condition, marine spatial planning, strategic management prospect (SMP), FeAST risk assessments, and other broad scale applications to support management decisions across Victoria. The habitat model and resulting map provides an updated broad-scale habitat map across Victoria¿s state waters and provides a baseline for future data to build upon.
Simple
Identification info
- Date (Creation)
- 2023-01-23
- Date (Publication)
- 2023-02-11
Owner
- Purpose
- The statewide marine habitat map provides broad habitat complexes across the state and provides greater knowledge of the ecological diversity across Victoria¿s waters. The map should be used at broad scales of >25 m, and where information of larger habitat complexes is needed. This work can support the management of large-scale habitats, their condition, marine spatial planning, strategic management prospect (SMP), FeAST risk assessments, and other broad scale applications to support management decisions across Victoria. The state habitat map addresses the Marine & Coastal Strategy 2022, building knowledge to improve the condition and ecological connectivity of habitats, and protecting Victoria¿s environment - Biodiversity 2037, improving our knowledge of habitats and their extent to support their protection and restoration.
- Status
- Completed
Processor
Point of contact
- Topic category
-
- Oceans
- Biota
Extent
))
Temporal extent
- Time period
- 2023-01-23 2023-01-23
- Maintenance and update frequency
- Annually
Resource format
- Title
- ESRI Shapefile
- Date
- Edition
- -
- Keywords (Place)
-
- Australia
- VICTORIA
- VICTORIA COAST
- VICTORIAN EMBAYMENTS
- GCMD Keywords, Version 8.5
- Keywords (Theme)
-
- Benthic habitat
Resource specific usage
- Specific usage
- Data supplied for use by the Seamap Australia Project.
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Mazor, T., Watermeyer, K., Hobley, T., Grinter, V., Holden, R., MacDonald, K. and Ferns, L. (2023). Statewide Marine Habitat Map. Habitat Complex Modelling Method (CBiCS Level 3). The State of Victoria Department of Energy, Environment and Climate Action.
- Other constraints
- This dataset is hosted by the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, on behalf of the Victorian Government for the purposes of the Seamap Australia collaborative project (testing a national marine benthic habitat classification scheme).
Resource constraints
- Use limitation
- DATA NOT TO BE USED FOR NAVIGATION PURPOSES.
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
Identifier
- Description
- Appended to original data for styling purposes for the Seamap Australia Project.
- Name
-
Benthic habitat
- Name
-
SM_HAB_CLS
Distribution Information
- Distribution format
-
-
ESRI Shapefile
-
ESRI Shapefile
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - This OGC WFS service returns the data (Statewide marine habitats 2023) in Shapefile format
- OnLine resource
-
seamap:SeamapAus_VIC_statewide_habitats_2023
MAP - Statewide marine habitats 2023
- OnLine resource
-
Original metadata record [Victorian Government catalogue]
Data quality info
- Hierarchy level
- Dataset
- Other
- Statewide Marine Habitat Map 2023
Report
Result
- Explanation
- Modelled estimatation of habitat distribution using best available data up to 2021 see report.
- Pass
- 1
Report
Result
- Explanation
- Modelled to coordinate system: VICGRID94 Due to modelling and digitisation uncertainties the maps should be used at broad scales of over 25m for decision making. Scale range on CoastKit available at 1:100.000
- Pass
- 1
Report
Result
- Explanation
- Victoria's marine environment and coastal habitats. Some small data gaps as a relict of the modelling process and availability of environmental predictor data. Completeness Verification: Habitat distribution model prediction using random forest machine learning tools from 32,998 ground-truthed habitat records and other digitised compiled datasets.
- Pass
- 1
Report
Result
- Explanation
- Classified to Level 3 Habitat Complexes within the Combined Biotope Classification Scheme (CBICs)
- Pass
- 1
Resource lineage
- Statement
- Dataset Source: PPB Habitat model 2021 provides an updated broad-scale habitat map across Port Phillip Bay, which has applied new machine learning techniques Previous mapping of Port Phillip Bay has provided insight into habitats across the region, with the latest map produced in 2016 (Edmunds & Flynn 2018). Since then, additional benthic survey data and data on environmental predictors has developed which increases the capacity to improve model habitat distributions and extent. The Open Coast statewide marine habitat map (excluding PPB) developed by Deakin Marine Mapping lab using a range of techniques including digitisation of polygons and has been compiled using a compilatiom of various datasets including Boon et al. (2011). Deakin Marine Mapping (Young M et al, 2018). GeoHab Victoria Estuaries Geomorphology (2010). Deakin Marine Mapping (Zavalas, R et al. 2018), DELWP wetlands (1994), Monk et al 2011, Roob and Ball (1997), Ford et al 2016, Edmunds and Flynn (2015), Blake and Ball (2001), Poore (1992), Cohen et al (2000). The map has later been reclassified to CBICS habitat classification scheme at broad-scale level 2 and 3. Dataset Originality: Primary & Derived View original metadata record for full data dictionary: https://metashare.maps.vic.gov.au/geonetwork/srv/eng/catalog.search#/metadata/2b7471bd-523a-5d66-b805-abc8ad650c50
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- research vessel
Metadata
- Metadata identifier
-
0145df96-3847-474b-8b63-a66f0e03ff54
- Language
- English
- Character encoding
- UTF8
Point of contact
Resource provider
- Parent metadata
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/0145df96-3847-474b-8b63-a66f0e03ff54
Point of truth URL of this metadata record
- Date info (Creation)
- 2023-01-15
- Date info (Revision)
- 2023-01-15
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
Provided by
