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Product pages » Woody Extent and Foliage Projective Cover - SPOT, OEH algorithm, NSW coverage » Western NSW refugia - collection, JRSRP algorithm, NSW coverage

Western NSW refugia - collection, JRSRP algorithm, NSW coverage

Last modified by Matt Paget on 2016/06/20 11:11

Western NSW refugia - collection, JRSRP algorithm, NSW coverage

Links to the layers

ItemProduct link
Persistent URL
Green accumulation index and run-on featuresNSW Green Accumulation
Water count and water prevalenceNSW Landsat Water
Woody extent and foliage projective cover
(See Armston 2009, Kitchen 2010)
Topographic layers
(after Ashcroft and Gollan, 2011)

Data licence and Access rights

RightsCopyright 2016 Joint Remote Sensing Research Program. Rights owned by the Joint Remote Sensing Research Program. Rights licensed subject to Creative Commons Attribution (CC BY).
LicenceCreative Commons Attribution 4.0 License,
AccessThese data can be freely downloaded and used subject to the CC BY licence. Attribution and citation is required as described at We ask that you send us citations and copies of publications arising from work that use these data.


This page contains links to spatial layers that can be used to identify potential refugia in the arid and semi-arid region of western New South Wales, Australia. The layers were derived from Landsat data and the SRTM DEM. The layers and how they can be used are described in detail in a forthcoming publication (Gill et. al. In Review).

The layers are:

  • green accumulation index and green-feature classes
  • water count and water prevalence classes
  • woody extent and foliage projective cover (See Armston 2009, Kitchen 2010)
  • topographic layers: topographic roughness, topographic position, cold-air drainage (after Ashcroft and Gollan, 2011)

Abstract from Gill In Review:

"The existence of vertebrate species in Australia’s arid and semi-arid interior is threatened by a future of more frequent and prolonged periods of hot, dry weather. So land managers in the region must identify and conserve refugia. But they can only assess a small number of sites on the ground because the area is remote, most places are difficult to access, and they are constrained by resources. Our intention was to create spatial layers to assist land managers find potential refugia, at the property scale, using desktop analyses prior to on-ground surveys. Land managers may also use the layers as evidence to justify the investment decisions to conserve the chosen sites."

refugia layers

Spatial and Temporal extents

Spatial resolution (metres)30 m
Spatial coverage (degrees)Western NSW, Australia
Temporal resolutionNA
Temporal coverage1988-2012
Sensor & platformLandsat 5&7, Shuttle Radar Topography Mission
Spatial representation typeGRID
Spatial reference systemMGA UTM zones 54 and 55

Point of contact

NameTony Gill
OrganisationNSW Office of Environment and Heritage
PositionProgrammer/remote sensing scientist
AddressPO Box 1020 Dubbo NSW 2830 Australia


Local Land Services, Western Region provided funding

Joint Remote Sensing Research Program

Office of Environment and Heritage

United States Geological Survey provided access to Landsat data


FoREnvironmental Sciences > Ecological Applications = 0501


Armston, J.D., Denham, R., Danaher, T., Scarth, P., Moffiet, T.N., 2009. Prediction and validation of foliage projective cover from Landsat-5 TM and Landsat-7 ETM+ imagery. Journal of Applied Remote Sensing 3, 033540. doi:10.1117/1.3216031

Ashcroft, M.B., Gollan, J.R., 2011. Fine-resolution (25 m) topoclimatic grids of near-surface (5 cm) extreme temperatures and humidities across various habitats in a large (200 × 300 km) and diverse region. International Journal of Climatology n/a–n/a. doi:10.1002/joc.2428

Gill, T., Horn, G., Grant, R., Gibson, R., Collerton, H. In Review. Towards practical methods for finding refugia on grazing properties in the arid rangelands of western New South Wales, Australia, using the Landsat archive and the SRTM DEM

Kitchen, J., Armston, J., Clark, A., Danaher, T., Scarth, P., 2010. Operational use of annual Landsat-5 TM and Landsat-7 ETM+ image time series for mapping wooded extent and foliage projective cover in north-eastern Australia, in: 15th Annual Australasian Remote Sensing and Photogrammetry Conference. Darwin, Australia.

Created by Tony Gill on 2016/05/20 23:43

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