BDBSA Project Metadata Detail

Survey/Project Number: 1016          Total No. of Sites: 392
Survey/Project Name: Vegetation Survey at Onkaparinga River Clarendon - RBTFP
Abstract: The aim of this project is to develop a comprehensive understanding of species (flora and fauna) present, and their distribution, within the Onkaparinga River adjacent Clarendon Recreation Park, and to have sufficient information available to inform planning and implementation of an environmentally sensitive weed control program for this site. This project will target, by removal or reduction of, barriers and threats to aquatic biota, with the aim of maximising the ecological benefits of returning environmental flows to the Onkaparinga, Torrens and South Para Rivers, Adelaide region, South Australia. The Adelaide and Mount Lofty Ranges NRM Board (the Board) is in the initial stages of planning for a program of works to complement the environmental flows trial in the Western Mount Lofty Ranges. As part of this program the Board is interested in undertaking clearance and control of environmental weeds along the length of the Onkaparinga River adjacent Clarendon Recreation Park. The idea of environmental weed clearance and control at this location has come about as a result of prioritising the outcomes of a river survey in which all barriers and threats were mapped and rated. This site has been prioritised as a high priority for action because the significant growth of environmental weeds is threatening aquatic health and because the density of these environmental weeds is also likely to be a barrier to the movement of aquatic biota. The Board believes that there exists an opportunity to provide great environmental and social rewards through the treatment of this site at Clarendon. However because of the site's importance to the community, and because any work should be done in a sensitive manner so as to enhance the benefits of reintroducing environmental flows, the Board is undertaking a rigorous planning process before commencing any onground works. REFERENCE: Refer to report: N12_6548_AWEReport12139_ClarendonVegSurveyReportVb
 
Start Date: 01/03/2012      End Date: 01/05/2012
Survey Type: Vegetation Only
   
Study Area Description: Onkaparinga River adjacent Clarendon Recreation Park
Objectives
         Vegetation: Refer to Abstract.
         Fauna: *** No fauna survey objectives recorded
Methodology
         Vegetation: A survey of the vegetation present along the full length of the reach was undertaken in March 2012 and included the channel and riparian zone. All weed species, indigenous flora species local to the area and all remnant flora species and plant communities were recorded. Extent and density of weed infestations and age class (seedling, juvenile, adult, dead) of woody trees and shrubs was also recorded. The location of all environmental weeds was mapped with the aid of aerial photography and a GPS. Whilst every effort has been made to accurately map the vegetation present, the mapping should be considered indicative because the positional accuracy may be variable due to the accuracy of GPS equipment under dense canopy, accuracy of the aerial photo rectification, and lack of access to the right bank along much of the length adjacent to the park and some of the left bank at the northernend of the site (which is private property). Opportunistic sightings, or evidence, of fauna species (native and introduced) were also recorded.
         Fauna: *** No vertebrate methodology recorded

Data Distribution Rules: Sensitive Dataset: Written permission required from Information Authority
Project Basis: Vegetation : Baseline Survey of flora and/or fauna - Standard Biol Survey of SA survey methodology not used.
Information Authority: Adelaide and Mount Lofty Ranges Natural Resources Management (NRM) Region