Vegetation survey of Ginghet Nature Reserve. VIS ID 3975
공공데이터포털
The composition and extent of the present vegetation within Ginghet Nature Reserve (former property Wyninebah) is described and mapped by Porteners (2010). Twenty-five quadrat-based sites were sampled, with intensive field traverses, opportunistic sampling and aerial photograph interpretation. The survey sites were selected using stratified random sampling with replication where possible within the attribute class. The sites were distributed primarily to reflect the geomorphological gradients and soil changes across the study area, and to a lesser extent the structural variation of the vegetation. The data were then analysed using PATN multivariate analysis and identified five vegetation communities. 136 taxa of vascular plants were recorded from 36 families, eight of which are considered to be regionally significant. At each site, all vascular plant species were recorded within 20 by 20 metre (0.04 hectare) quadrats, and assigned a cover abundance rating based on a modified Braun-Blanquet six-point scale (Poore 1955). Bryophytes were not included in the survey. Vegetation structure was described by measuring the height and canopy cover of the dominant species in each stratum. Physiographic data additional to those defined by the stratification were also recorded, including soil type, landform, fire history and disturbance. All sites were located using a GPS, photographed and nested from the south-west corner Vegetation communities were mapped using colour aerial photographs at approximately 1: 50 000 scale (runs dated 3rd April 2005). The air photos formed the basis of the vegetation map polygons, supplemented by various orthophoto, SPOT satellite and other GIS layers. The photos were interpreted stereoscopically for patterns of vegetation and geomorphology, and then matched to the vegetation site data via direct visual assignment of floristic group attributes on the remote imagery. A provisional vegetation map was drafted and the study area traversed, with particular sites investigated to confirm polygon labels and resolve vegetation boundaries. The final vegetation polygons were transferred and visually corrected (orthorectified) to the orthophoto map and coded, ready for digitising into the GIS. The final vegetation map was digitised by DECCW Scientific Services (Dubbo) using ArcGIS. VIS_ID 3975
Composition and extent of the present vegetation within the Gerara addition to Ledknapper Nature Reserve. VIS ID 3978
공공데이터포털
The composition and extent of the present vegetation within the Gerara addition to Ledknapper Nature Reserve is described and mapped. Thirty quadrat-based sites were sampled, with intensive field traverses and aerial photograph interpretation. Six vegetation communities are described and 181 taxa of vascular plants recorded, eight of which are considered to be rare and threatened or regionally significant (sixteen including previous survey records). Modifications to the vegetation within the study area have occurred with past clearing, grazing and the introduction of goats, however significant areas of Ledknapper Spinifex Complex, Gidgee and Brigalow Transitional Woodlands, Mulga Shrublands and open floodplain communities remain. The original Beulah portion of Ledknapper Nature Reserve was surveyed and mapped in 2002-2003 (Hunter and Fallavollita 2003). Detailed survey and mapping of the following Glenalbyn addition to the reserve was carried out in the early spring of 2006, with six vegetation communities described and 207 taxa of vascular plants recorded (Porteners 2006a). VIS_ID 3978
Vegetation survey and mapping of Carrabear Nature Reserve. VIS ID 3984
공공데이터포털
Vegetation survey and mapping of Carrabear NR in 2012, commissioned by NPWS Narrabri Region. Five communities were determined based on floristic analysis of 20 x 20 m survey sites, and described using dominant species and structural characteristics. Vegetation communities were mapped using ground truthing, position in landscape and stereo interpretation of aerial photos captured at 1:50,000. Lineage and attribution accuracy are unknown. VIS_ID 3984