Identification

Field	Value
Title	HEVAE Vegetation Groundwater Dependent Ecosystems Value - Sydney Metropolitan
Alternative title(s)	GDE HEVAE Sydney Metropolitan
Abstract	NSW DoI Water has adopted the Guidelines for Identifying High Ecological Value Aquatic Ecosystems (HEVAE) framework developed by the Australian Commonwealth Government. In the current assessment for NSW, the HEVAE consists of four key criteria which include diversity, distinctiveness, naturalness and vital habitat. Therefore, the HEVAE vegetation GDE value layer is a combination of four individual criterion layers. The final or overall HEVAE score was determined for vegetation PCT polygons which has a high probability of being groundwater dependent. This was calculated by adding together the final scores for each criterion (Naturalness, Diversity, Distinctiveness and Vital Habitat). This score was then standardised by dividing by the maximum combined HEVAE score for a whole catchment’s vegetation GDE polygons to provide an even spread of score outcomes between 0 (lowest) and 1 (highest). For ease of data modelling and management, the dataset was divided into the following catchment management areas; Border Rivers-Gwydir, Central Tablelands, Central West, Hawkesbury-Nepean, Hunter-Central Rivers, Lachlan, Lower Murray Darling, Murray, Murrumbidgee, Namoi, Northern Rivers, Southern Rivers, Southern Tablelands, Sydney Metro and Western Division (subdivided further into the IBRA Sub regions).
Resource locator
Data Quality Statement	Name: Data Quality Statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: Data quality statement for HEVAE Vegetation Groundwater Dependent Ecosystems Value - Sydney Metropolitan Function: download
GDE HEVAE - Sydney Metropolitan	Name: GDE HEVAE - Sydney Metropolitan Protocol: WWW:DOWNLOAD-1.0-http--download Description: Geodata base Function: download
GDE HEVAE Metadata statement	Name: GDE HEVAE Metadata statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: PDF file Function: download
CSIRO Publication	Name: CSIRO Publication Protocol: WWW:DOWNLOAD-1.0-http--download Description: A new approach to prioritising groundwater dependent vegetation communities to inform groundwater management in New South Wales, Australia Function: download
Unique resource identifier
Code	1910570f-ad37-4f93-938b-e0c19cb14025
Presentation form	Map digital
Edition	v1
Dataset language	English
Metadata standard
Name	ISO 19115
Edition	2016
Dataset URI	https://datasets.seed.nsw.gov.au/dataset/1910570f-ad37-4f93-938b-e0c19cb14025
Purpose	Environmental management
Status	Completed
Spatial representation
Type	vector
Geometric Object Type	curve
Spatial reference system
Code identifying the spatial reference system	4283
Equivalent scale	1:None

Classification of spatial data and services

Field	Value
Topic category

Keywords

Field	Value
Keyword set
keyword value	VEGETATION WATER-Groundwater
Originating controlled vocabulary
Title	ANZLIC Search Words
Reference date	2008-05-16
Geographic location
West bounding longitude	149.72747
East bounding longitude	152.75435
North bounding latitude	-33.55658
South bounding latitude	-31.33775
NSW Place Name	Hunter, Central Rivers
Vertical extent information
Minimum value	-100
Maximum value	2228
Coordinate reference system
Authority code	urn:ogc:def:cs:EPSG::
Code identifying the coordinate reference system	5711
Temporal extent
Begin position	2018-06-01
End position	N/A
Dataset reference date
Resource maintenance
Maintenance and update frequency	Unknown
Contact info
Contact position	Data Broker
Organisation name	NSW Department of Climate Change, Energy, the Environment and Water
Telephone number	131555
Email address	data.broker@environment.nsw.gov.au
Web address	https://www.nsw.gov.au/departments-and-agencies/dcceew
Responsible party role	pointOfContact

Quality and validity

Field	Value
Lineage	The final or overall HEVAE score is determined for each vegetation GDE polygon. This is calculated by adding together the final weighted and standardised scores for each HEVAE criterion (Naturalness, Diversity, Distinctiveness and Vital Habitat). This score is then standardised by dividing by the maximum combined HEVAE score for a whole catchment’s river reaches to provide an even spread of score outcomes between 0 (lowest) and 1 (highest). A five class or category system has been adopted to display the four criteria and overall standardised score HEVAE outputs. Each of final five HEVAE classes (and the Criteria) were based on steps of 0.2 as shown in the table below. Table. Details on the five classes used to spatially display overall HEVAE or associated criteria for high probability vegetation GDEs in NSW. Standardised score range HEVAE Class 0.801 – 1.000 Very High Value 0.601 – 0.800 High Value 0.401 – 0.600 Medium Value 0.201 – 0.400 Low Value 0.000 – 0.200 Very Low Value Overall HEVAE outputs, along with contributing criteria are applied to each mapped vegetation polygon and can provide useful tools for assisting at fine scale and broader scale decision making for water sharing planning needs and other natural resource management needs. Areas of highest priority (i.e. very high and high HEVAE value) can be easily identified. The details of the GDE HEVAE methods are in Dabovic et. al. (2019). Process step Data sets used in the GDE HEVAE methods included: • High probability vegetation GDE dataset (DoI Water) • Threatened species profile search for listing under the NSW Threatened species Conservation Act 1995 (TSCA 1995) and Atlas of NSW Wildlife (OEH) • Threatened and protected species – profiles and records viewer, for listing under the NSW Fisheries Management Act 1994 (FMA 1994) (DPI Fisheries); and • Commonwealth Government Protected Matters Search Tool, for listings under the Environment Protection and Biodiversity Conservation Act 1999 (EP&BCA 1999). • Ramsar/DIWA Wetlands dataset (OEH) • National Parks (OEH) • Australian Hydrologic Geospatial catchments (BOM) • Vegetation condition scores (State of the Catchment reports – OEH) • Springs (DoI Water & BOM) Separate spatial models were developed for each of the criteria and overall GDE HEVAE Scores. Distinctiveness Attributes that combine to give total distinctiveness score (DISTINCTIVENESS) are: FAUNA_SCORE - Fauna score for each species calculated by multiplying the conservation score (Table 1), weighting for distribution (recorded = 1, known = 0.5 and predicted = 0.25) and the mobility score (OEH scoring for asset identification) in a GDE Polygon. All species were then added together for a final fauna score. FLORA_SCORE - Flora score for each species calculated by multiplying the conservation score (Table 1), weighting for distribution (recorded = 1, known = 0.5 and predicted = 0.25). CONS_SCORE - vegetation community conservation score (1 to 0.25). FISHEEC_SCORE – predicted weighting of 0.25. Diveristy Attributes that combine to give total diversity score (DIVERSITY_VALUE) are: NEAR_SCORE - distance between each vegetation polygon. PATCH_SIZE_SCORE – area of the GDE vegetation polygons. Naturalness Attributes that combine to give total naturalness score (NATURALNESS) are: EdgeAreaRatio_Score NPestate (yes/no) NPestate_Score - Areas with national parks estate received as weighted score of 1. CDI_score - The catchment disturbance index scores were adopted straight from the RCI (Healey et al. 2012) VegPercScore - percentage of native/non-native vegetation Vital Habitat Attributes that combine to give total vital habitat (VITALHABITAT) are: Wetland (yes/no), Wetland_Score - Areas with wetlands received as weighted score of 1. Spring_Score - Areas with springs received as weighted score of 1. TargetSpecies – significant vegetation species as determined in the Basin Watering Strategy TargetSpecies_Score - Areas with target species received as weighted score of 1. CONDITION_SOC (type of veg condition category) VegConditionScore - The condition categories where adopted from the state of the catchment reports with managed and removed categories receiving a zero weighting. Criteria and overall HEVAE Scores All final scores were standardised before being totalled up (PARAMETER_SUM) and then standardised to give an overall HEVAE score (GDE_HEVAE).

Field

Value

Lineage

The final or overall HEVAE score is determined for each vegetation GDE polygon. This is calculated by adding together the final weighted and standardised scores for each HEVAE criterion (Naturalness, Diversity, Distinctiveness and Vital Habitat). This score is then standardised by dividing by the maximum combined HEVAE score for a whole catchment’s river reaches to provide an even spread of score outcomes between 0 (lowest) and 1 (highest). A five class or category system has been adopted to display the four criteria and overall standardised score HEVAE outputs. Each of final five HEVAE classes (and the Criteria) were based on steps of 0.2 as shown in the table below. Table. Details on the five classes used to spatially display overall HEVAE or associated criteria for high probability vegetation GDEs in NSW. Standardised score range HEVAE Class 0.801 – 1.000 Very High Value 0.601 – 0.800 High Value 0.401 – 0.600 Medium Value 0.201 – 0.400 Low Value 0.000 – 0.200 Very Low Value Overall HEVAE outputs, along with contributing criteria are applied to each mapped vegetation polygon and can provide useful tools for assisting at fine scale and broader scale decision making for water sharing planning needs and other natural resource management needs. Areas of highest priority (i.e. very high and high HEVAE value) can be easily identified. The details of the GDE HEVAE methods are in Dabovic et. al. (2019). Process step Data sets used in the GDE HEVAE methods included: • High probability vegetation GDE dataset (DoI Water) • Threatened species profile search for listing under the NSW Threatened species Conservation Act 1995 (TSCA 1995) and Atlas of NSW Wildlife (OEH) • Threatened and protected species – profiles and records viewer, for listing under the NSW Fisheries Management Act 1994 (FMA 1994) (DPI Fisheries); and • Commonwealth Government Protected Matters Search Tool, for listings under the Environment Protection and Biodiversity Conservation Act 1999 (EP&BCA 1999). • Ramsar/DIWA Wetlands dataset (OEH) • National Parks (OEH) • Australian Hydrologic Geospatial catchments (BOM) • Vegetation condition scores (State of the Catchment reports – OEH) • Springs (DoI Water & BOM) Separate spatial models were developed for each of the criteria and overall GDE HEVAE Scores. Distinctiveness Attributes that combine to give total distinctiveness score (DISTINCTIVENESS) are: FAUNA_SCORE - Fauna score for each species calculated by multiplying the conservation score (Table 1), weighting for distribution (recorded = 1, known = 0.5 and predicted = 0.25) and the mobility score (OEH scoring for asset identification) in a GDE Polygon. All species were then added together for a final fauna score. FLORA_SCORE - Flora score for each species calculated by multiplying the conservation score (Table 1), weighting for distribution (recorded = 1, known = 0.5 and predicted = 0.25). CONS_SCORE - vegetation community conservation score (1 to 0.25). FISHEEC_SCORE – predicted weighting of 0.25. Diveristy Attributes that combine to give total diversity score (DIVERSITY_VALUE) are: NEAR_SCORE - distance between each vegetation polygon. PATCH_SIZE_SCORE – area of the GDE vegetation polygons. Naturalness Attributes that combine to give total naturalness score (NATURALNESS) are: EdgeAreaRatio_Score NPestate (yes/no) NPestate_Score - Areas with national parks estate received as weighted score of 1. CDI_score - The catchment disturbance index scores were adopted straight from the RCI (Healey et al. 2012) VegPercScore - percentage of native/non-native vegetation Vital Habitat Attributes that combine to give total vital habitat (VITALHABITAT) are: Wetland (yes/no), Wetland_Score - Areas with wetlands received as weighted score of 1. Spring_Score - Areas with springs received as weighted score of 1. TargetSpecies – significant vegetation species as determined in the Basin Watering Strategy TargetSpecies_Score - Areas with target species received as weighted score of 1. CONDITION_SOC (type of veg condition category) VegConditionScore - The condition categories where adopted from the state of the catchment reports with managed and removed categories receiving a zero weighting. Criteria and overall HEVAE Scores All final scores were standardised before being totalled up (PARAMETER_SUM) and then standardised to give an overall HEVAE score (GDE_HEVAE).

Constraints related to access and use

Field	Value
Limitations on public access

Responsible organisations

Field	Value
Responsible party
Contact position	Data Broker
Organisation name	NSW Department of Climate Change, Energy, the Environment and Water
Telephone number	131555
Email address	data.broker@environment.nsw.gov.au
Web address	https://www.nsw.gov.au/departments-and-agencies/dcceew
Responsible party role	pointOfContact

Metadata on metadata

Field	Value
Metadata point of contact
Contact position	Data Broker
Organisation name	NSW Department of Climate Change, Energy, the Environment and Water
Telephone number	131555
Email address	data.broker@environment.nsw.gov.au
Web address	https://www.nsw.gov.au/departments-and-agencies/dcceew
Responsible party role	pointOfContact
Metadata date	2024-06-19T21:35:47.383054
Metadata language

Identification

Title

Alternative title(s)

Abstract

Resource locator

Data Quality Statement

GDE HEVAE - Sydney Metropolitan

GDE HEVAE Metadata statement

CSIRO Publication

Unique resource identifier

Code

Presentation form

Edition

Dataset language

Metadata standard

Name

Edition

Dataset URI

Purpose

Status

Spatial representation

Type

Geometric Object Type

Spatial reference system

Code identifying the spatial reference system

Equivalent scale

Classification of spatial data and services

Topic category

Keywords

Keyword set

keyword value

Originating controlled vocabulary

Title

Reference date

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

NSW Place Name

Vertical extent information

Minimum value

Maximum value

Coordinate reference system

Authority code

Code identifying the coordinate reference system

Temporal extent

Begin position

End position

Dataset reference date

Resource maintenance

Maintenance and update frequency

Contact info

Contact position

Organisation name

Telephone number

Email address

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

Quality and validity

Lineage

Constraints related to access and use

Limitations on public access

Responsible organisations

Responsible party

Contact position

Organisation name

Telephone number

Email address

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

Metadata on metadata

Metadata point of contact

Contact position

Organisation name

Telephone number

Email address

Web address