WETLAND DELINEATION REPORT - SRK Consulting

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Wetland and Vegetation AssessmentTable 6: Plant species identified in Arundo donax–Pluchea dioscoridis Reed Thickets during the timeof the surveyTREESFORBSChromolaena odorata (L.) R.M.King & H.Rob. Amaranthus hybridus L.Lantana camara L.Chamaecrista comosa E.Mey.Melia azedarach L. Commelina erecta L.Phyllanthus reticulatus Poir.Hewittia malabarica (L.) SureshPluchea dioscoridis (L.) DC. Momordica balsamina L.Ricinus communis L.Vernonia oligocephala (DC.) Sch.Bip. ex Walp.Solanum mauritianum Scop.Wahlenbergia krebsii Cham.Zehneria scabra (L.f.) Sond.GRASSESREEDS AND SEDGESCynodon dactylon (L.) Pers.Phragmites australis (Cav.) Steud.Dactyloctenium aegyptium (L.) Willd.Arundo donaxEleusine coracana (L.) Gaertn.Panicum maximum Jacq.Figure 20: Arundo donax–Pluchea dioscoridis reed thickets8.3. Red Data Plant SpeciesThe following red data plant species have historically been recorded in the 2832AC Quarter DegreeGrid according to SIBIS web data base (South African Biodiversity Institute) (Table 7).Table 7: Red Data Plant Species recorded in the 2832AC Quarter Degree GridFAMILY NAME SPECIES NAME CATEGORYAMARYLLIDACEAE Crinum acaule NTAMARYLLIDACEAE Crinum moorei VUAMARYLLIDACEAE Crinum stuhlmannii DecliningAPIACEAE Alepidea peduncularis DDTASPHODELACEAE Aloe cooperi subsp. pulchra DDTASPHODELACEAE Kniphofia littoralis NTHYACINTHACEAE Drimia elata DDTHYACINTHACEAE Eucomis autumnalis subsp. clavata DecliningHYPOXIDACEAE Hypoxis hemerocallidea DecliningORCHIDACEAE Eulophia speciosa DecliningINSTITUTE OF NATURAL RESOURCES 25
Wetland and Vegetation AssessmentFAMILY NAME SPECIES NAME CATEGORYPASSIFLORACEAE Adenia gummifera var. gummifera DecliningNote: For the definition of the categories refer to Appendix B.None of the above listed species were recorded as occurring naturally within the study area duringthe surveys. Although numerous of the species listed above may have occurred in the study areawhen suitable habitat still occurred, shrinking, disappearing and degrading of the availableremaining habitat have had a devastating impact on these plant populations. Severe infestation ofthe natural vegetation by invasive alien species and localised disturbances to the upper soil profileshave removed and killed many of the geophytic species.The Ficus sycamorus–Trichilia emetica riverine woodland community contains highly suitable habitatfor four Declining plant species, and marginally suitable habitat for one Near Threatened (NT) plantspecies and one Data Deficient species (Table 8).Table 8: Species of concern in the Ficus sycamorus–Trichilia emetica riverine woodland communitySUITABILITYFAMILY NAME SPECIES NAME CATEGORYOF FLOWERINGREMAINING SEASONHABITATAMARYLLIDACEAE Crinum acaule NT Medium Sep-JanHYACINTHACEAE Drimia elata DDT Medium Sep-JanHYACINTHACEAEEucomis autumnalissubsp. clavataDeclining High Dec-AprHYPOXIDACEAE Hypoxis hemerocallidea Declining High Aug-AprORCHIDACEAE Eulophia speciosa Declining High Aug-JanPASSIFLORACEAEAdenia gummifera var.gummiferaDeclining High Oct-JanThe Helichrysum krausii–Chrysanthemoides monilifera shrubland plant community contains highlysuitable habitat for two Declining plant species and marginally suitable habitat for one NT plantspecies (Table 9).Table 9: Species of concern in the Helichrysum krausii–Chrysanthemoides monilifera shrubland plantcommunitySUITABILITYFAMILY NAME SPECIES NAME CATEGORYOF FLOWERINGREMAINING SEASONHABITATAMARYLLIDACEAE Crinum acaule NT Medium Sep-JanHYPOXIDACEAE Hypoxis hemerocallidea Declining High Aug-AprORCHIDACEAE Eulophia speciosa Declining High Aug-JanThe Arundo donax–Pluchea dioscoridis reed thicket community contains marginally suitable habitatfor one declining species, but only in a rehabilitated state (Table 10).INSTITUTE OF NATURAL RESOURCES 26
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