Type of resources
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. Full Methodology: Citation: 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
This is a map of all existing EV chargers funded by DEECA.
2021-22 Colac Otways Golden Plains Photography
The SAR imagery were tasked for flood extent mapping purposes. Each SAR imagery comes in two polarisations: vv and vh, they have the same extent.
This project represents the creation of untextured LOD2.2 F1 building feature objects over the Dandenong Activity Centre in the City of Greater Dandenong Local Government Area. Building geometry was separated by property base, and street-facing awnings were further modelled on non-residential properties. Bridges and tunnel portals were also modelled at LOD2 although no tunnel features ultimately found to be present. The models were stereo mapped from the 2021-22 Greater Melbourne Multi-Epoch Photography Spring epoch raw frames. Building skirts and bridge extents were cut to the 2017-18 Greater Melbourne Lidar DEM. The models are to support state and local government in general desktop survey purposes, including but not limited to feasibility studies, visualisation of future stages of potential projects; extracting building heights and form, and modelling of other typical ground-based features that would be required in the early stages of transport and infrastructure planning. The data will also be fed into the Department's Digital Twin Victoria Platform.
Steavenson Taggert River Photography
Polygon coverage displaying Victorian commercial timber harvesting event data in State forest, by financial year. Other information recorded is silvicultural operation type, forest type, start/end dates of the logging event. The dataset has been updated with the 2021-22 information. Complete to the end of June 2022
This Coordinated Imagery Program (CIP) project represents a 5 cm resolution relaxed accuracy 4-band RGBI aerial photography capture over the Barwon South West DELWP Region. The photography and the derived products will primarily be used by DELWP for mapping Phytophthora spread through the landscape, by visually (on-screen) identifying impacted species (generally Xanthorrhoea sp.) and then validating in the field. It may also be used to determine the suitability of using a Machine Learning approach.
This project was kicked off by the major flooding events in oct 2022, to generate water extent to help with the emergency managemnt. Both optical and SAR imagery were tasked.
2022-23 French Island and Phillip Island Photography and Elevation