Saltwater crocodile nesting habitat suitability mapping with Landsat TM and GIS, Northern Territory Australia

M L Duffett; K R Harvey; Greg J E Hill

doi:10.1109/IGARSS.2000.858166

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Saltwater crocodile nesting habitat suitability mapping with Landsat TM and GIS, Northern Territory Australia

Conference paper

Peer reviewed

Saltwater crocodile nesting habitat suitability mapping with Landsat TM and GIS, Northern Territory Australia

M L Duffett, K R Harvey and Greg J E Hill

Proceedings. IGARSS 2000. IEEE 2000 International, Vol.V, pp.1918-1920

Geoscience and Remote Sensing Symposium, 2000 (Hawaii, United States, 2000)

Institute of Electrical and Electronics Engineers

2000

DOI: https://doi.org/10.1109/IGARSS.2000.858166

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Abstract

Zoology

Geomatic Engineering

saltwater crocodile

Crocodylus porosus

remote sensing

GIS

Saltwater crocodile nesting habitat in the coastal rivers and wetlands of the Northern Territory is being mapped through the application of combined remote sensing and GIS methods. The main thrust of the approach adopted is to circumscribe prospective nesting areas as stringently as possible using GIS, thus minimising the spectral range of the investigated regions. Unsupervised classification of Landsat TM data from the prospective areas identified with GIS is then applied. The high-spectral-precision wetland cover classes thus generated are ranked according to nesting habitat suitability by using GIS to calculate the density of previously mapped nests in each class. The classified imagery is converted to a nesting habitat suitability map using the class rankings obtained. Results indicate that successful identification of permanent freshwater bodies is crucial to the effectiveness of the method. The technique may be extended to areas of little or no historical nesting data using class signatures obtained from better known areas. Examples of crocodile nesting habitat mapped using these techniques are presented from three diverse Northern Territory wetland systems: the Finniss-Reynolds floodplain, the Adelaide River and the McArthur River

Details

Title: Saltwater crocodile nesting habitat suitability mapping with Landsat TM and GIS, Northern Territory Australia
Authors: M L Duffett (Author)
K R Harvey (Author) - Northern Territory University
Greg J E Hill (Author) - University of the Sunshine Coast
Publication details: Proceedings. IGARSS 2000. IEEE 2000 International, Vol.V, pp.1918-1920
Conference details: Geoscience and Remote Sensing Symposium, 2000 (Hawaii, United States, 2000)
Publisher: Institute of Electrical and Electronics Engineers
Date published: 2000
DOI: 10.1109/IGARSS.2000.858166
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Vice-Chancellor and President
Language: English
Record Identifier: 99448720902621
Output Type: Conference paper

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