Vertebrate monitoring and resampling in Kakadu National Park : Year 3, 2003-04
Watson, Michelle; Woinarski, John Casimir Zichy; Northern Territory. Department of Infrastructure, Planning and Environment
E-Publications; E-Books; PublicationNT
Date:2004-05; Made available via the Publications (Legal Deposit) Act 2004 (NT)
Summary -- 1. Introduction -- 2. Continuation of a monitoring program that will contribute to the assessment of impacts of cane toads -- 3. Baseline survey of vertebrates at fire monitoring plots -- 4. Investigation of change in vertebrate (especially mammal) species composition at sites sampled in historic surveys -- a. Jabiluka -- b. Kapalga -- 5. Survey of threatened plants -- 6. Investigation of census and trapping methods for feral cats and dingoes -- 7. Training of Parks Australia staff in fauna survey through a field-based camp -- 8. Compilation of data bases and GIS layers showing existing and current fauna records -- Appendix A. Schedule for consultancy RS19 Vertebrate monitoring and resampling in Kakadu National Park.
Animals -- Northern Territory -- Kakadu National Park
Northern Territory Government
v, 57 pages : col. maps ; 30 cm.
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
13 Changes in abundance of native mammals at the Jabiluka site were related to habitat type and fire history for each sub-site. All sub-sites were assigned to one of five broad habitat types: riparian woodland, sandstone woodland, mixed eucalypt woodland, closed forest and floodplain fringe (as identified in the original study). For each species, the extent of change between the two sampling periods was compared across the five habitat types using one-way analysis of variance. Fire history parameters for each of the sub-sites were calculated using the library of interpreted satellite imagery for Kakadu National Park. Fire history data is based on fine resolution Landsat-TM imagery (pixel size 0.06ha) for the period 1996-2003, and coarser Landsat-MSS imagery (pixel size 0.5ha) for the period 1982-1995. For each year between 1982 and 2003, each sub-site was scored as burnt or unburnt over the early dry season (May-July) and late dry season (August-November). From these data, summary fire parameters were calculated for each sub-site. These parameters were: The total number of fires for the period 1982-2003 (Tfire 82-03) The number of late dry season fires between 1982-2003 (Lfire 82-03) The interval between the 2003 resample and the last fire. (TSB total) The interval between the 2003 resample and the last late dry season fire (TSB late) Given the greatly improved precision of the Landsat-TM imagery, separate parameters were calculated for the 1996-2003 period. These parameters were the total number of fires (Tfire 96-03) and the number of late dry season fires (Lfire 96-03). Generalised linear modelling was used to investigate the relationship between these fire parameters and observed changes in mammal populations.
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