| Field | Value |
|---|---|
Title |
Snow Gum Dieback Mapping Kosciuszko National Park Resorts 2021 VIS_ID 4847 |
Abstract |
There has been a rapid expansion of dieback in alpine snow gums (Eucalyptus niphophila) across Kosciuszko National Park (KNP) in recent years, particularly between 1600m and 1800m. Other snow gum species E. lacrimans and E. debeuzevillei have also been impacted. A scoping plan was formulated by the NSW National Parks & Wildlife Service (NPWS) to map dieback for all snow gum species which occur within sub-alpine and alpine vegetation communities. Snow gum dieback presents considerable risks for ecological degradation, park visitor safety, water supply and energy generation. NPWS sought assistance from the DPIE Science, Economics and Insights Division to map the severity of snow gum dieback using imagery and tools at their disposal. This dataset was developed for Milestone 1 of the scoping plan: mapping of the current extent and severity of snow gum dieback within alpine resort areas of KNP that have not been impacted by the 2003 fires. Thredbo, Perisher and Charlottes resorts were mapped. Selwyn was not mapped due to severe fire damage in the 2019-20 fires. In the case of Thredbo, the KRVA 2003 provided an initial footprint and required minor editing. The KRVA 2003 was inaccurate for Perisher and Charlottes and polygons were created from scratch. VIS_ID 4847 |
Resource locator |
|
Data Quality Statement |
Name: Data Quality Statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: Data quality statement for Snow Gum Dieback Mapping Kosciuszko National Park Resorts 2021 Function: download |
Report |
Name: Report Protocol: WWW:DOWNLOAD-1.0-http--download Description: Snow Gum Dieback Mapping Kosciuszko Resorts April 2021 Report Function: download |
Download Package |
Name: Download Package Protocol: WWW:DOWNLOAD-1.0-http--download Description: Data (Shapefile) Function: download |
Unique resource identifier |
|
Code |
4a28ef9f-4544-4562-8743-071db7bc875e |
Presentation form |
Map digital |
Edition |
1 |
Dataset language |
English |
Metadata standard |
|
Name |
ISO 19115 |
Edition |
2016 |
Dataset URI |
https://datasets.seed.nsw.gov.au/dataset/4a28ef9f-4544-4562-8743-071db7bc875e |
Purpose |
Climate change and vegetation adaption research |
Status |
Completed |
Spatial representation |
|
Type |
vector |
Geometric Object Type |
surface |
Geometric Object Count |
2230 |
Spatial reference system |
|
Code identifying the spatial reference system |
4283 |
Spatial resolution |
50 cm |
| Field | Value |
|---|---|
Topic category |
| Field | Value |
|---|---|
Keyword set |
|
keyword value |
VEGETATION ECOLOGY-Landscape WATER-Hydrology |
Originating controlled vocabulary |
|
Title |
ANZLIC Search Words |
Reference date |
2008-05-16 |
Geographic location |
|
West bounding longitude |
148.262421 |
East bounding longitude |
148.583771 |
North bounding latitude |
-36.493436 |
South bounding latitude |
-36.364158 |
NSW Place Name |
Kosciuszko National Park |
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 |
2021-04-15 |
End position |
N/A |
Dataset reference date |
|
Resource maintenance |
|
Maintenance and update frequency |
As needed |
Contact info | |
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| Field | Value |
|---|---|
Lineage |
Digital imagery and spatial data used
Mapping API (Air Photo Interpretation) was completed in ArcGIS using 2011 (ADS) and 2020 (Aerometrex) digital imagery. This allowed comparison of dieback severity change over 9 years. Due to time constraints, mapping using pre-2000 imagery could not occur. A visual guide for the 5 levels of dieback severity was developed in consultation with NPWS staff and was used to calibrate mapping. The 5 levels of severity were sourced from the original 2019 NPWS scoping plan: - Nil: little to no dieback observed - Isolated: dieback of scattered and isolated snow gums, often amongst boulder fields - Moderate: mix of dieback and some healthy trees, many branches with no leaves, only small numbers of trees with mostly full leaf cover - Severe: most trees significantly impacted, most branches with few or no leaves, many dead trees Three separate ArcGIS shapefiles were originally produced for Thredbo, Perisher and Charlottes, all with identical fields: - Sev_2011: Nil, Iso, Mod, Sev, Fire - Sev_2020: Nil, Iso, Mod, Sev, Fire - Comments: observations other than severity including burned by 2003 fires, replanted snow gum, seedling/crown regrowth, E.stellulata, vegetation removal The initial shapefile footprint was created for each resort area using 2011 ADS imagery in a 3D environment (Planar hardware, StereoAnalyst software). This allowed greater precision due to the ability to perceive vegetation boundaries more clearly in 3D. In the case of Thredbo, the KRVA 2003 provided an initial footprint and required minor editing. The KRVA 2003 was inaccurate for Perisher and Charlottes and polygon creation from scratch was completed. Dieback severity was first attributed in 3D using the 2011 imagery, then in 2D using the 2020 imagery. Individual polygons were split if severity class varied between 2011 and 2020 imagery. The final 3 shapefiles were clipped to the resort boundaries. Future fieldwork 3 fieldwork sites were rapidly visually examined in Charlottes and Perisher and appeared to validate API. However further field inspection is required via a planned systematic inventory to validate this API over the 3 resort areas. |
| Field | Value |
|---|---|
Limitations on public access |
|
| 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 |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| 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 |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
Metadata date |
2024-02-26T13:00:36.715027 |
Metadata language |
|