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Mapping the nesting habitats of saltwater crocodiles (Crocodylus porosus) in Melacca Swamp and the Adelaide River wetlands, Northern Territory: an approach using remote sensing and GIS

Harvey, KR and Hill, GJE (2003). Mapping the nesting habitats of saltwater crocodiles (Crocodylus porosus) in Melacca Swamp and the Adelaide River wetlands, Northern Territory: an approach using remote sensing and GIS. Wildlife Research,30(4):365-375.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 8 times in Scopus Article | Citations

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Title Mapping the nesting habitats of saltwater crocodiles (Crocodylus porosus) in Melacca Swamp and the Adelaide River wetlands, Northern Territory: an approach using remote sensing and GIS
Author Harvey, KR
Hill, GJE
Journal Name Wildlife Research
Publication Date 2003
Volume Number 30
Issue Number 4
ISSN 1035-3712   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0141540479
Start Page 365
End Page 375
Total Pages 11
Place of Publication Australia
Publisher CSIRO Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract The utility of integrating remotely sensed data and other spatial information in a geographical information system (GIS) to model habitat suitability for nesting by saltwater crocodiles ( Crocodylus porosus) was investigated in this study. The study areas, Melacca Swamp and the Adelaide River wetlands, are located 50 km east of Darwin, Northern Territory, and encompass areas of suitable nesting habitat for C. porosus. Melacca Swamp is a highly productive nesting area and is managed as a conservation reserve to protect its nesting habitat. Landsat TM, SPOT satellite imagery and large-scale colour aerial photography were evaluated for their utility in mapping habitats preferred for nesting by C. porosus within Melacca Swamp. Satellite imagery was capable of identifying generalised habitat classes used for nesting ( e. g. open swamp with emergent trees). However, it was only with aerial photography that habitats could be discerned ( e. g. sedges with scattered Melaleuca trees). Spatial information derived from satellite imagery and other sources was integrated in a GIS to model potentially suitable nesting habitat along the Adelaide River. This methodology effectively identified known preferred nesting areas of C. porosus on the basis of the analysis of environmental parameters (i.e. distance to water, vegetation type) that have an influence on selection of nesting habitat. The findings of this research demonstrate the utility of remote sensing and GIS for mapping nesting habitat of C. porosus at a range of scales and provide guidelines for application of the approaches used at the regional or State level.
Keywords landsat tm data
aerial survey
classification
australia
vegetation
coast
areas
DOI http://dx.doi.org/10.1071/WR00008   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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