Biodiversity status of pre-clearing and remnant regional ecosystems - South East Qld

Abstract

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied. The pre-clearing mapping is based on aerial photography and field survey of vegetation communities. Regional ecosystem linework reproduced at a scale greater than 1:100,000, except in designated areas, should be used as a guide only. The positional accuracy of RE data, mapped at a scale of 1:100,000, is 100 metres. The map scale of 1:50,000 applies to the Wet Tropics and part of Southeastern Queensland and map amendments areas.

Purpose

Pre-clearing regional ecosystems mapping at a map scale of 1:100,000 and 1:50,000 in part, based on surveys of vegetation communities and related landform, soils and geology and on 1:80,000 B&W 1960's aerial photography. Version 8.0 regional ecosystem descriptions, as originally described in Sattler & Williams (ed.) (1999) are available for download on the Queensland government website (search on: Regional Ecosystem Description Database). The survey and mapping of regional ecosystems of Queensland provides information for regional groups, non-government organisations, government departments, local government and industry, for planning and management purposes. (Dataset for Queensland incomplete).

Dataset History

Lineage statement:

Related polygon coverages include: pre-clearing vegetation communities and regional ecosystems, 1997, 1999, 2000, 2001, 2003, 2005, 2006, 2006b, 2007, , 2011 remnant regional ecosystems and, for areas where regional ecosystem coverages have not been completed, a separate polygon layer, remnant vegetation cover (e.g.: remcov11).

Process step:

The pre-clearing vegetation is simply the vegetation before clearing. Mapping of pre-clearing vegetation is based on the interpretation of landscape as depicted on aerial photos or satellite imagery (Landsat, Spot), and ground truthed on a limited sample of known points. The Queensland Herbarium uses the 1:80,000 black and white 1960's photos as the standard imagery for mapping pre-clearing vegetation. The structural classification system is based on Walker and Hopkins (1990). Where vegetation has already been cleared on these aerial photographs, the pre-clearing vegetation is reconstructed by the botanist using available information, including landform, soils, geology, field data (remnant roadside trees) and ecological knowledge. In addition, historical survey records of vegetation types and older aerial photos (if they exist) are used extensively in this reconstruction. The 2011 extent is based on the 2011 extent mapping that was derived from the standard state-wide coverage of dry season (around September) 2011. Technical processes: Vegetation boundaries are drawn on aerial photographs and manually digitised. Boundaries are referenced primarily to rectified Landsat imagery supplied by the State Land and Trees Study (SLATS, DSITIA) and to orthophotos if available. Field survey provided partial verification of boundaries. Pre-clearing vegetation is delineated using above resource material. Remnant vegetation boundaries derived by intersecting the 'vegetation cover' with the pre-clear coverage and altering attributes to reflect the remaining vegetation components of each polygon. The vegetation cover data is generated from Landsat imagery, using change detection data &/or Foliage Protection Cover (woody cover) from SLATS, DSITIA, as additional indicators of remnant, cleared or disturbed areas.

Source:

General Source Data: 1:80,000 B&W 1960's aerial photography, Landsat TM imagery rectified to 1:100,000 topographic maps, geology, soils and land systems data, topographic maps, field survey, existing field site data and existing mapped data (digital and hard-copy). Other reference data: National Estates (QLD), DCDB. Primary data source for the Wet Tropics bioregion 1:50,000 scale regional ecosystem mapping: * Vegetation of the Wet Tropics of Queensland bioregion. Wet Tropics Management Authority, Cairns, Stanton J.P. and Stanton, D.J. (2005). Additional Source Data for SEQ 1:50,000 scale mapping: 1:100,000 scale geological mapping NR&M (2002) and extensive field data for all revisions. * Ipswich, Mt Lindesay, Esk & Helidon sheets revised (2000-2001) using 1:25,000 colour aerial photography (1994-1997). * Gatton Shire revision using 1:25,000 colour aerial photography (1997) and Gatton Shire Remnant vegetation mapping, QPWS, Grimshaw (2001). * Crows Nest Shire revision using 1:25,000 colour aerial photography (2000). * Boonah Shire revision using 1:25,000 vegetation survey, Olsen (2001). * Laidley Shire revision using 1:25,000 colour aerial photography (1997) and 1:50,000 vegetation survey, Lockyer Landcare (1997). * Noosa Shire revision using 1:25,000 colour aerial photography (1997 & 2000) and Noosa Shire 1:25,000 vegetation survey, Burrows (2000). * Pine Rivers Shire revision using 1:25,000 colour aerial photography (1997), Pine Rivers Shire regional ecosystem database (2001) and the Brisbane Forest Park, 1:25,000 vegetation survey, Young (1996). * Logan City revision using 1:25,000 Logan City vegetation survey, Ecograph (2000). * Redland Shire revision using 1:25,000 Redland Shire vegetation survey, Olsen (2001). * Gold Coast City Council revision using 1:10,000 digital ortho-photography (2001) and QPWS Fire Management Strategy (2001). * Beaudesert Shire revision using 1:25,000 colour aerial photography (1997) and Beaudesert Shire vegetation survey, Chenoweth EPLA (2002) and QPWS Fire Management Strategy (2001). * Cooloola Shire revision using 1:40,000 colour aerial photography (1996) and Cooloola Shire vegetation survey, Lowe (2002). * Maroochy Shire revision using 1:25,000 colour aerial photography (1997) and Maroochy Shire vegetation survey, MSC (2002). * Caloundra City Council revision using 1:25,000 colour aerial photography (1997).

Dataset Citation

"Queensland Herbarium, Department of Science, Information Technology, Innovation and the Arts" (2013) Biodiversity status of pre-clearing and remnant regional ecosystems - South East Qld. Bioregional Assessment Source Dataset. Viewed 12 December 2018, http://data.bioregionalassessments.gov.au/dataset/9b7bcebf-8b7f-4fb4-bc91-d39f1bd960cb.