Risk to Biodiversity of the Western Davenport Area, 2022

Index:

Metadata
Citation
Description

Dataset Status
Data Quality
Contact Information
Data Dictionary
Supplementary Information

Metadata Details:

Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile

Version:1.0

Date Metadata Extracted:2025-04-19

Date Metadata Last Updated:2022-06-20

Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=DD0A970F5523374FE0532144CD9B0B12

Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=DD0A970F5523374FE0532144CD9B0B12

Citation

ANZLIC Identifier:DD0A970F5523374FE0532144CD9B0B12

Title: Risk to Biodiversity of the Western Davenport Area, 2022

Citation Date:2022-04-20

Date Type:creation

Custodian:Department of Environment, Parks and Water Security

Description

Abstract:

This polygon spatial dataset describes the Risk to Biodiversity in the Western Davenport area, Northern Territory.
The biodiversity study area covers approximately 647,000 ha and is located south of the Tennant Creek Township within the Western Davenport Water Control District.

The data and report provides knowledge of biodiversity values within the study area to;
1. Identify and map the distribution of Groundwater Dependent Ecosystems (GDEs);
2. Characterise the ecological attributes and assess the biological value of GDEs; and
3. Improve knowledge on ecological values and species protected under the EPBC or TPWC Acts.

Risk to Biodiversity classes were derived and mapped across the study area from the biodiversity values data compiled during the study.

This information is part of the Mapping the Future Project of the Western Davenport Area. This project has identified land capability, water availability and biodiversity values to support land planning and inform development potential. Reports and maps for the project can be viewed from the webpage: https://depws.nt.gov.au/DevelopmentOpportunities
- Development Potential of the Western Davenport Area (2022)
- Biodiversity Assessment of the Western Davenport Area (2022)
- Ecological characteristics of potential groundwater dependent vegetation in the Western Davenport Water Control District (2021)
- Groundwater Resource Investigation of the Western Davenport Area (2022)
- Soil and Land Resources of Neutral Junction and Murray Downs (2022)
- Soil and Land Suitability Assessment for Irrigated Agriculture in the Ali Curung Area (2016)

ANZLIC Search Words:

biota

environment

Spatial Domain:

Bounding Coordinates:

North Bounding Coordinate:-20.5547

South Bounding Coordinate:-21.5195

East Bounding Coordinate:134.7681

West Bounding Coordinate:133.79286

Dataset Status

Dataset ID:

Language:English

Character Set: Latin 1

Progress:completed

Maintenance and Update Frequency:notPlanned

Data Currency Start Date:2022-04-28

Data Currency End Date:2022-04-28

Access Constraint:Links to download reports, maps and spatial datasets are noted in the Development Opportunities website. depws.nt.gov.au/DevelopmentOpportunities
or
Download the spatial data package (contains spatial data, maps and reports) via data.nt.gov.au/
Search for Risk to Biodiversity of the Western Davenport Area, 2022.

You are licensed to use the geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: creativecommons.org/licenses/by/4.0/legalcode
If you do not agree to the terms and conditions you must not use the geospatial products.
You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:
Supplied by the Department of Environment, Parks and Water Security. Copyright Northern Territory Government.

Data Quality

Lineage:Two spatial datasets have been created for this project.
- Biodiversity Assessment: contains all attributes as described in the Data Dictionary.
- Biodiversity Risk: contains a reduced set of attributes with components of GDE and SIG_VEG dissolved. This dataset was used to compile the development potential summary datasets for the Mapping the Future project.

The biodiversity values in this Biodiversity Risk spatial dataset were compiled by the Flora and Fauna Division of this department.
- Modelling was developed to map GDEs in the study area and indicated, with high confidence, a band of GDEs running southeast to northwest, where the depth-to-groundwater (DGW) is less than 10 m.
- Floristic surveys were undertaken between March 2019 and August 2019.
- Fauna surveys were undertaken between March and October 2019.
- Vegetation community mapping derived from the soil and land suitability assessments carried out by Burgess et al. (2016) and Carnavas (2022).

Positional Accuracy:The vegetation was mapped at a scale of 1:25,000 Burgess et al. (2016) and 1:100,000 Carnavas (2022).

Attribute Accuracy:Field data (site information) described and classified according to national standards at the time of capture. Attribute values are assigned to each polygon and described in the Data Dictionary below.
The attribute naming format uses 10 characters with no spaces to be suitable for an ESRI shape-file format. An alias attribute name is applied to an ESRI file geo-database format.

Biodiversity values data are compiled into five possible Risk to Biodiversity classes (refer to Data Dictionary in this record).
Three of the classes were identified as appropriate and mapped in this study:
- Class 2. No significant value
- Class 4. Sensitive and/or significant biodiversity
- Class 5. High biodiversity value

Logical Consistency:GIS editing tools were used to rectify all overshoots and undershoots in line work. Polygon topology rules applied are; must not overlap, must not have gaps and each polygon has only one label. Polygons are single part.

Completeness:Complete

Contacts

Name Organisation Position Role Phone Fax Email

Data Requests Officer Department of Environment, Parks and Water Security Geospatial Services Branch (on behalf of department) distributor datarequests.depws@nt.gov.au

Name	Organisation	Position	Role	Phone	Fax	Email
Data Requests Officer	Department of Environment, Parks and Water Security	Geospatial Services Branch (on behalf of department)	distributor			datarequests.depws@nt.gov.au

Data Dictionary

Attribute Attribute Description Possible Code Code Description

01. PROJECT Mapping the Future project name

02. BIORISK Alias: Risk to Biodiversity Class
Integer from 1 to 5
Each Risk to Biodiversity Class is described in 3 parts. They are joined together for mapping display.
Each of the 3 parts is also noted as an attribute - see BIODESC1, 2 and 3. 1 (1) NIL (2) Highly modified (3) Land that has had significant alteration by land use, development, mining or infrastructure.

2 (1) LOW (2) No significant biodiversity value (3) No significant values identified.

3 (1) MITIGABLE (2) Apply land management strategies (3) Land that may provide habitat for broadly-occurring threatened species or other biodiversity values. Retention of a proportion of this habitat, for example through application of the NT Land Clearing Guidelines, may be required to protect biodiversity values.

4 (1) MODERATE (2) Sensitive and/or significant biodiversity (3) Land containing sensitive or significant vegetation types as identified in the NT Land Clearing Guidelines, and/or occurrence of species of conservation interest.

5 (1) HIGH (2) High biodiversity value (3) Land with high biodiversity value based on significant vegetation community type, and/or habitat for threatened species.

03. BIODESC1 Alias: BioRisk - Description 1
Part 1 of the Biodiversity Risk Class description, as described in the BIORISK attribute.

04. BIODESC2 Alias: BioRisk - Description 2
Part 2 of the Biodiversity Risk Class description, as described in the BIORISK attribute.

05. BIODESC3 Alias: BioRisk - Description 3
Part 3 of the Biodiversity Risk Class description, as described in the BIORISK attribute.

06. SOBS Site of Botanical Significance (SOBS) name

07. SOCS Site of Conservation Significance (SOCS) name

08. SIG_VEG Sensitive and Significant Vegetation predicted to occur based on mapping as reported in Stokeld et al. 2022.
Note that this attribute does not have values for predicted groundwater dependent ecosystems which are also considered SIG_VEG. GDE's are attributed in the GDE field.

09. GDE Groundwater Dependent Ecosystem predicted to occur within polygon based on modelling described in Stokeld et al. 2022 and Brimbox et al. 2022.

GDEs are ecosystems that require access to groundwater to meet all or some of their water requirements on a permanent or intermittent basis (Richardson et al. 2011). Development can impact sensitive habitats beyond the immediate development footprint.

10. GDE_AGG Alias: GDE aggregation
Extent of groundwater dependent ecosystems within a 10 hectare neighbourhood window.

11. LAND_UNIT Land units with vegetation communities broadly classified as river red gum channels - 10e1, 10s1.

Land units with vegetation communities broadly classified as coolibah low open woodland - 5.1, 5.2, 5.3, 10a1, 10a2, 10a3, 10a4, 9s3, 10e2.

12. WOFS Water Observations from Space (WOFS; Mueller et al. 2016) used to delineate areas predicted to contain inflow dependent vegetation.
Value = WOFS or null.

13. GEOFAB Australian Hydrological Geospatial Fabric v3.2 (Geoscience Australia) used to identify areas predicted to contain inflow dependent vegetation. Specifically, Land Subject To Inundation areas were identified from the HydroAreas dataset.
Value = GEOFAB or null.

14. SURFWATER Surface water delineated from a satellite image showing maximum surface water extent across the landscape (Landsat 7 ETM+ image captured on 25 March 2011), with various additional high-res image data used for contextual information.
Value = SURFWATER or null.

15. SOURCE Source from which the significant and sensitive vegetation spatial data were derived.

16. AREA_HA Area (hectares) of polygon

Attribute	Attribute Description	Possible Code	Code Description
01. PROJECT	Mapping the Future project name
02. BIORISK	Alias: Risk to Biodiversity Class Integer from 1 to 5 Each Risk to Biodiversity Class is described in 3 parts. They are joined together for mapping display. Each of the 3 parts is also noted as an attribute - see BIODESC1, 2 and 3.	1	(1) NIL (2) Highly modified (3) Land that has had significant alteration by land use, development, mining or infrastructure.
		2	(1) LOW (2) No significant biodiversity value (3) No significant values identified.
		3	(1) MITIGABLE (2) Apply land management strategies (3) Land that may provide habitat for broadly-occurring threatened species or other biodiversity values. Retention of a proportion of this habitat, for example through application of the NT Land Clearing Guidelines, may be required to protect biodiversity values.
		4	(1) MODERATE (2) Sensitive and/or significant biodiversity (3) Land containing sensitive or significant vegetation types as identified in the NT Land Clearing Guidelines, and/or occurrence of species of conservation interest.
		5	(1) HIGH (2) High biodiversity value (3) Land with high biodiversity value based on significant vegetation community type, and/or habitat for threatened species.
03. BIODESC1	Alias: BioRisk - Description 1 Part 1 of the Biodiversity Risk Class description, as described in the BIORISK attribute.
04. BIODESC2	Alias: BioRisk - Description 2 Part 2 of the Biodiversity Risk Class description, as described in the BIORISK attribute.
05. BIODESC3	Alias: BioRisk - Description 3 Part 3 of the Biodiversity Risk Class description, as described in the BIORISK attribute.
06. SOBS	Site of Botanical Significance (SOBS) name
07. SOCS	Site of Conservation Significance (SOCS) name
08. SIG_VEG	Sensitive and Significant Vegetation predicted to occur based on mapping as reported in Stokeld et al. 2022. Note that this attribute does not have values for predicted groundwater dependent ecosystems which are also considered SIG_VEG. GDE's are attributed in the GDE field.
09. GDE	Groundwater Dependent Ecosystem predicted to occur within polygon based on modelling described in Stokeld et al. 2022 and Brimbox et al. 2022. GDEs are ecosystems that require access to groundwater to meet all or some of their water requirements on a permanent or intermittent basis (Richardson et al. 2011). Development can impact sensitive habitats beyond the immediate development footprint.
10. GDE_AGG	Alias: GDE aggregation Extent of groundwater dependent ecosystems within a 10 hectare neighbourhood window.
11. LAND_UNIT	Land units with vegetation communities broadly classified as river red gum channels - 10e1, 10s1. Land units with vegetation communities broadly classified as coolibah low open woodland - 5.1, 5.2, 5.3, 10a1, 10a2, 10a3, 10a4, 9s3, 10e2.
12. WOFS	Water Observations from Space (WOFS; Mueller et al. 2016) used to delineate areas predicted to contain inflow dependent vegetation. Value = WOFS or null.
13. GEOFAB	Australian Hydrological Geospatial Fabric v3.2 (Geoscience Australia) used to identify areas predicted to contain inflow dependent vegetation. Specifically, Land Subject To Inundation areas were identified from the HydroAreas dataset. Value = GEOFAB or null.
14. SURFWATER	Surface water delineated from a satellite image showing maximum surface water extent across the landscape (Landsat 7 ETM+ image captured on 25 March 2011), with various additional high-res image data used for contextual information. Value = SURFWATER or null.
15. SOURCE	Source from which the significant and sensitive vegetation spatial data were derived.
16. AREA_HA	Area (hectares) of polygon

Supplementary Information

BIBLIOGRAPHIC REFERENCE
-------------------------------------------
Stokeld, D., Leiper, I., Brim Box, J., Jobson, P., Nano, C. and Box, P. (2022).
Mapping the Future Project - Western Davenport.
Biodiversity assessment of the Western Davenport area.
Technical Report 30/2021, Department of Environment, Parks and Water Security, Northern Territory Government. Darwin, NT.
- Download report from the Northern Territory Library: hdl.handle.net/10070/868530

RELATED INFORMATION
------------------------------------
Nano, C., Jobson, P., Randall, D. and Brim Box, J. (2021).
Ecological characteristics of potential groundwater dependent vegetation in the Western Davenport Water Control District.
Technical Report no 19/2021. Department of Environment, Parks and Water Security, Northern Territory Government, Darwin. Northern Territory.
- Download report from the Northern Territory Library: hdl.handle.net/10070/868536

Carnavas, M. (2022).
Mapping the Future Project - Western Davenport.
Soil and Land Resources of Neutral Junction and Murray Downs.
Technical Report 5/2022, Department of Environment, Parks and Water Security, Northern Territory Government. Darwin, NT.
- Metadata record: www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=CB76D2595A225F42E0532144CD9B597F

Burgess J, McGrath N, Andrews K and Wright A (2016)
Agricultural Land Suitability Series, Report 5. Soil and Land Suitability Assessment for Irrigated Agriculture in the Ali Curung Area
Technical Report 16/2016D, Department of Environment and Natural Resources, Darwin, NT.
- Metadata record: http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2567BDC8C2A7E80EE050CD9B214424AB

Northern Territory Development Potential
- Metadata record: http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=9F5E2062C486505FE0530101007FCA99

Northern Territory Groundwater Dependent Development Potential
- Metadata record: http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=9F5E2062C487505FE0530101007FCA99

Northern Territory Flora Atlas
- Metadata record: http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=6ADC8A7881CE6518E040CD9B21443386

Northern Territory Fauna Atlas
- Metadata record: www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB771208B06B6E040CD9B0F274EFE

This record maintained using the NTLIS Metadata Tool

Metadata : Risk to Biodiversity of the Western Davenport Area, 2022