Title

Native Vegetation Regulation (2017) Habitat Importance Maps (HIM) for VROTs species 

Alternate title

NVR2017_HIM 

Purpose

This datasets support species specific considerations associated with Native Vegetation Clearing Regulations (2017). It is important to understand the distribution of a species' habitat as part of making decisions that enable species to persist in the future. These models are primary inputs to NVR Location data for Native Vegetation Regulation (NVR2017_LOCATION). 

Credit

Dataset Creators: Graeme Newell, Nevil Amos & the Native Vegetation Review Team (Penny Croucamp with support from Kuniko Yamada & Gordon Forbes) 

Supplemental Information

Relationship to other Datasets: Source Data: Site record information from the Victorian Biodiversity Atlas published Future Design Issues: Modeling techniques are always improving; Future models may identify areas of potential habitat beyond native vegetation Related Documents: Guidelines for the removal, destruction or lopping of native vegetation. - DELWP (December 2017) 

Status

Completed  

Horizontal Accuracy

100m  

Code

4283 

Maintenance and update frequency

As needed  

Title

TIFF format 2 

Topic category

• Biota

Use limitation

None. Native Vegetation Regulation 2017 

Classification

Unclassified  

Statement

Dataset Source: 1. The landscape units mask was applied to all habitat distribution suitability final raw models, at and produced by ARI, based on known locations. 2. Thresholds for each species are unique, which were applied to each model of datasets, which were supplied by ARI. 3. Each model was masked within the NVR2017_EXTENT. 4. For species where there was insufficient data to create a model, the models were created from point observations of the Victorian Biodiversity Atlas (VBA) only. 5. Models were combined with NV_CONDITION information. 6. All models were combined with the known site locations from VBA points as per feedback from specialists. Dataset Originality: Primary & Derived 

Description

Collection Method: model based on survey records 

Description

Processing took place in EnSym - MATLAB database. 

Classification

Unclassified  

Attribute Quality

Comments

These data are a combination of site observations and models and as such are indications of the importance of habitat. Some species are known to predominantly inhabit non-native vegetation. This modelled data component does not capture this. Models of habitat are not intended to equate with species presence. Other factors such as natural disturbances, losses due to historic catastrophes, and the impact of predators and seasonal factors influence whether a species is present in habitat at any given time. These data are highly reliant on survey records that indicate the suitability of a particular environment for a species. New records may influence future spatial models of suitable habitat. 

Positional Accuracy

Comments

75m x 75m cells 

Conceptual Consistency

Comments

Includes species point data from VBA where no model exists or in addition to model 

Missing Data

Comments

Victoria Currently this series includes rare or threatened flora & fauna species which have sufficient survey records to create models and maps. This includes dispersed species (i.e. habitat > 2000 ha) and highly localised species (i.e. habitat area <= 2000ha), for the purpose of the DELWP's 'Guidelines for the removal, destruction or lopping of native vegetation' (December 2017). Completeness Verification: Where no model exists for a particular species the sites are used to show the distribution of that species. 

Excess Data

Comments

Continuous grid attributes of 0 to 100 where 100 is the highest importance score and 0 is the lowest. Highly Localised species is not ranked, only have the score of 100 or 0 (binary).