Appendix 2 - Vegetation Communities and Regional Ecosystems

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4.0 Results – Field Analysis 4.1 Classification of Land and Vegetation 4.1.1 Land Zones Aerial photographic analysis completed in conjunction with detailed field survey effort indicates 11 broad geological/landform associations in the study area relevant to land zone classification as per Neldner et al. (2005) and Harris (undated). These are given a specific geological attribute in the mapping process to allow associations between land zone and vegetation to be recognised, and RE’s classified. The landform/geological associations relevant to land zone classification that are recognised in the study area are identified in Table 7 below and spatially illustrated in accompanying maps 3a to 3e. The derivation of these classifications is discussed briefly in Section 5.1. Table 7. Geological types and land zones identified in the Torres Strait Islands. Geological Geological Description Attribute E Estuarine muds, alluvium (saline and brackish alluvium), coastal sands and rock shelves subject to saltwater incursion. D Coastal dunes, cheniers, calcareous beach sands (including atolls), beach ridges and associated swales. A Alluvial plains, alluvial fans (active), terraces and fluvial sediments. Excludes alluvial sediments affected by tidal/saltwater incursion. 3d Environmental – Torres Strait Regional Ecosystem Mapping Project – August 2008 EPA Land Zone T Remnant colluvial surfaces. 5 As Residual sandy plains and sandy terraces. 5 L Exposed duricrust 7 B Basalt escarpments and terraces. 8 V Volcanic cones formed on ash and scoria. 8 G Granite hillslopes and footslopes including boulder talus and colluvium. 12 Gd Diorite and Dacite. 12 Mg Metamorphosed granitoid rocks including hornfels. 12 R Rhyolites and associated fine grained volcanic rocks including tuff, ignimbrite and a range of other acid volcanic extrusive and intrusive rocks. 4.1.2 Vegetation Communities The VC’s identified within the study area, in relation to specific Broad Vegetation Groups (BVG’s) and land zone affiliations are listed in Table 8 below with distribution maps presented in the accompanying maps 4a to 4e. One hundred and fifty eight VC’s are identified within 27 BVG’s. It should be noted that this classification relates to remnant vegetation only and classification of non-remnant vegetation communities is discussed in Section 6.1.3. It should be noted in respect to the vine forest and thicket communities, that relatively fine scale floristic and 1 2 3 12 24
structural variations have been differentiated between islands and island groups. This was possible due to the geographic isolation that islands impose on their inherent vegetation, giving confidence that fine scale floristic variations are consistently represented and delineated. These communities however represent a snapshot of the floristic and structural variation present within the island group and a large number of intermediate variations may be present. Table 8. Vegetation Communities in the Project Area. Vegetation Community Description Evergreen/Semi-evergreen vine forest and vine thicket Geologies 1a Evergreen notophyll vine forest + Acmenospermum claviflorum + Syzygium puberulum + Ganophyllum falcatum + Arytera divaricata + Ficus microcarpa + *Mangifera indica. G 1b Evergreen notophyll vine thicket (windsheared) + Manilkara kauki + Intsia bijuga + Pouteria sericea + Aglaia elaeagnoidea + Garcinia warrenii + Pandanus sp. G 1c Evergreen notophyll vine thicket (windsheared) + Manilkara kauki + Celtis philippensis + Terminalia muelleri + Diospyros maritima + Thespesia populneiodes + Drypetes deplanchei. D 1d Mesophyll/notophyll vine forest + Endiandra glauca + Acacia polystachya + Syzygium bungadinnia + Canarium australianum + Dysoxylum oppositifolium. GD, R 1e Mesophyll/notophyll vine forest + Myristica insipida + G Maranthes corymbosa + Cryptocarya cunninghamii + 1f Dysoxylum latifolium + Calophyllum sil +/- Arenga australasica. Complex notophyll vine forest + Pouteria sp. + Calophyllum sil + Argyrodendron polyandrum + Palaquium galactoxylon + Acmenospermum claviflorum + Licuala ramsayi. G 1g Evergreen notophyll vine thicket + Calophyllum sil + Syzygium branderhorstii + Diospyros hebecarpa + Schefflera actinophylla + Podocarpus grayae +Licuala ramsayi. G 1h Evergreen notophyll vine thicket with Buchanania arborescens + R Drypetes deplanchei + Eleaodendron melanocarpum + 1i** Endiandra glauca + Elaeocarpus arnhemicus + Chionanthus ramiflora. Evergreen mesophyll vine forest + Horsfieldia australiana, Syzygium bamagense + Acmena hemilampra subsp. hemilampra + Buchanania arborescens. A 1j Tall evergreen notophyll vine forest + Syzygium angophoroides + Acmena hemilampra subsp. hemilampra + Acacia auriculiformis + Syzygium forte subsp. forte + Podocarpus grayae Deciduous/Semi deciduous vine forest and vine thicket A 2a Deciduous/Semi-deciduous vine forest + Erythrina variegata + Manilkara kauki + Terminalia subacroptera + Mimusops elengi + Cordia subcordata. D 2b Semi deciduous vine forest/thicket + Canarium australianum + Terminalia subacroptera + Bombax ceiba var. leiocarpum + Cochlospermum gillivraei + Cleistanthus peninsularis + Ficus virens var. sublanceolata. G,R 2c Semi-deciduous vine thicket + Mimusops elengi + Acacia auriculiformis + Terminalia subacroptera + Diospyros spp. +/- Manilkara kauki +/- Melaleuca cajuputi subsp. platyphylla. A 2d Semi deciduous vine forest + Tetrameles nudiflora + Canarium australianum + Ficus spp. + Bombax ceiba var. leiocarpum +/- Alstonia spectabilis. G 2e Semi deciduous vine thicket + Terminalia subacroptera + Intsia bijuga + Hibiscus tiliaceus + Excoecaria agallocha + Thespesia populneoides + Cathormion umbellatum subsp. moniliforme. L 3d Environmental – Torres Strait Regional Ecosystem Mapping Project – August 2008 25
Page 1 and 2: Vegetation Communities and Regional
Page 3 and 4: Acknowledgments This project was fu
Page 5 and 6: 5.2.6 Regional Ecosystem 3.1.7 (New
Page 7 and 8: 1. Introduction Three (3)d Environm
Page 9 and 10: Waral Kawa (Deliverance) Is. ARAFUR
Page 11 and 12: Photograph 1. A deflation scar in t
Page 13 and 14: 3. Methods 3.1 Desktop Literature R
Page 15 and 16: Plant taxonomy and distributional d
Page 17 and 18: Table 5. Site survey effort in Stag
Page 19 and 20: Legend Quaternary Ugar (Stephens) I
Page 21 and 22: TORRES 0 5 10 15 20 N O T E : S Kil
Page 23 and 24: 3.4 Field Survey Procedure The exec
Page 25 and 26: Queensland’s Vegetation Managemen
Page 27 and 28: 3.6 Scale of Survey In vegetation s
Page 29: cover on both satellite formats cre
Page 33 and 34: Vegetation Community Description se
Page 35 and 36: Vegetation Community Description Ge
Page 41 and 42: Regional Ecosystem Component Vegeta
Page 43 and 44: Regional Ecosystem 3.3.14b 7fs 3.3.
Page 45 and 46: Regional Ecosystem 3.12.20 3.12.21a
Page 47 and 48: 5.1.3 Land Zone 3 Difficulties with
Page 49 and 50: corestones above the surface of wha
Page 51 and 52: Zone classification more robust. Th
Page 53 and 54: The mapping of VC24a as a complex r
Page 55 and 56: Photograph 11. Mangrove woodland do
Page 57 and 58: also forms a component of VC26b, ma
Page 59 and 60: Eleocharis dulcis often with an eva
Page 61 and 62: Photograph 20. The broken canopy ty
Page 63 and 64: of Heritiera littoralis, Xylocarpus
Page 65 and 66: Acacia crassicarpa woodland (RE3.2.
Page 67 and 68: Photograph 29. Open forest with dom
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Page 71 and 72: Vegetation Community 14t/16c: This
Page 73 and 74: Photograph 39. Maximum development
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Page 79 and 80: are similarly sparse, dominated by
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are also mapped on Badu Island wher
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community where it is mapped as com
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5.2.23 Regional Ecosystem 3.2.27 De
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5.2.26 Regional Ecosystem 3.3.5c De
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Photograph 61. Tall notophyll fores
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5.2.29 Regional Ecosystem 3.3.9 Des
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glauca, Rhodamnia macrocarpa, Sterc
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occurs on drainage swamps, it has b
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5.2.35 Regional Ecosystem 3.3.20c P
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5.2.37 Regional Ecosystem 3.3.27 Ph
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Photograph 85. Shrubland dominated
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Photograph 88. Low woodland/shrubla
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RE is supported, which provides som
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Photograph 99. Maximum development
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5.2.47 Regional Ecosystem 3.3.70 (N
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not differentiated from the broader
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Photograph 106. Vegetation Communit
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5.2.52 Regional Ecosystem 3.5.19a D
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That this community is marginal to
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Photograph 117. Grassland community
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Vegetation Community 2j: Vegetation
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Pandanus sp, contribute roughly equ
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distinctive structural components.
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canopy species in most locations, a
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Photograph 131. Lighter coloured cr
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5.2.63 Regional Ecosystem 3.12.13 P
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Photograph 137. Low rise in acid vo
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exposed to prevailing trade winds a
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Photograph 142. Vine Thicket Commun
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Vegetation Community 2x: A represen
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5.2.69 Regional Ecosystem 3.12.29 P
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The extensive mosaic of grassland a
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Photograph 155. Shrubland community
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extent of this community greatly re
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Photograph 161. Bare pavements with
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Vegetation Community 2h: This commu
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idgelines, Acacia polystachya may f
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It is envisaged, as is the general
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Photograph 170. Evergreen notophyll
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This habitat is unique in the natio
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canopy forms a poorly defined strat
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Vegetation Community 5u: Similar to
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5.3 Retrospective Classifications L
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RE: Native Regrowth Communities: Na
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5.5 Other Classifications Areas Rep
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Regional Ecosystem Pre-clearing Are
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clarksoniana, Eucalyptus brassiana
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This includes 196 (15%) naturalised
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Species Island Ipomoea hederifolia
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Table 16. Summary of survey records
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Species Known Distribution Survey R
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Photograph 187. Regrowth mangrove s
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Saibai Island grasslands and other
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10. Bibliography Abrahams, H., Mulv
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Galloway, R. W. and E. Löffler (19
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University, Darwin, Australia. 13-1
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Client Scale Legend Evergreen vine
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Melaleuca dominant open forests Cli
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Legend Successional vine forest com
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Legend - Land Zones of the Torres S
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Family_Name Botanical_Name BRI C’
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Appendix 2 - Vegetation Communities and Regional Ecosystems

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