Summary - City of Gosnells

Vegetation 74it was recorded previously (including Bassendean and Midland). There are a number of other regionallysignificant species in Sites 15 and 16, including Thysanotus arenarius (a calcicole species that is an indicatorof ML on the Pinjarra Plain), Burchardia bairdiae, Gastrolobium ebracteolatum, Prasophyllum drummondii,Sphaerolobium vimineum and Utricularia inaequalis.Assignation of FCTs (Table 5.5, Column 6a)The vegetation of Sites 15 and 16 should be regarded as part of the complex of vegetation types associatedwith the Muchea Limestone TEC.From the data collected in the current survey and the (sometimes ambiguous) trends expressed by the resultsof the multivariate analysis of these sites against the SCP dataset, Sites 4, 5, 19, 20, 21 and 26 were assignedto the Muchea Limestone TEC (see Groups A and C above).Sites 8, 9, 10, 11 and 18 were tentatively assigned to FCTs 8/10a pending further hydrogeologicalinvestigation of the contribution of Muchea Limestone aquifers to the maintenance of vegetation in theseareas (see Group C above).Group E. Degraded SitesResultsSites 1, 3, 25, 29 and 32 were relatively degraded sites. Sites 1 and 3 were wetland sites on GuildfordFormation sediments and Sites 25 and 29 were upland sites on Bassendean Sands.Assignation of FCTs (Table 5.5, Column 6a)These sites were not reliably assigned to FCTs by the floristic analysis and there was insufficient otherevidence to further inform the analysis results. Sites 1 and 3 were probably most similar to Sites 4 and 5before disturbance.Sites 25 and 29 were probably not part of FCT 20a but the more common FCT 23a that has been recordedpreviously in BFS 387 (Government of Western Australian, 2000).Group F. Unassigned SitesResultsMKSEA Site 2 was too weedy for assigning it to any FCT, and Site 27 presented a very ambiguous pattern inrelation to the SCP dataset. The vegetation of this site was also unlike any other vegetation previouslyrecorded in BFS 387 or BFS 53.Site 27 was not able to be investigated in as much detail as the other sites due to access problems. There wasno evidence of calcareous material at the site (although one calcicole species Thysanotus arenarius wasrecorded) and the water table was relatively low. Unlike Sites 15 and 16 there was no evidence of a welldevelopedpeat layer in this wetland. However, the vegetation recorded at this site had species that wereundeniably obligate and facultative wetland species. The unusual wetland vegetation at this site appearedsomewhat at odds with the physical conditions at the site.Assignation of FCTs (Table 5.5, Column 6a)It was not possible to assign Site 27 to any FCT or TEC. This area requires further hydrogeologicalinvestigation to determine the habitat. However, as intact remnant vegetation of the eastern SCP this areahas, at least, high regional significance.Tauss, C. and Weston, A.S. (2010). The flora, vegetation and wetlands of the Maddington-Kenwick Strategic Employment Area.A survey of the rural lands in the vicinity of the Greater Brixton Street Wetlands. Report to the City of Gosnells, W.A. Version 18.04.10