DARLING RIVERINE PLAINS BIOREGION Background Report

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16/08/02 Darling Riverine Plains Bioregion Background Report Minor Land Profiles Land Systems Mid Darling Nelyambo, areas of Thackenbe, Budda, Acres Billabong Dunoak in the north, Denian in the south Geology Quaternary alluvials Quaternary alluvials Quaternary alluvials Landform and Soils Main river channel and adjacent low level flood plain. Grey clays Vegetation Coolabah and river red gum fringing channels. Occasional black box and river cooba on the flood plain Condition Heavily grazed, some High level floodplain patterned by small lakes, low rises and dunes, and high level anabranches. Grey clays, areas of sands and texture contrast soils Forbfields; black box and coolabah fringing lakes and bases of dunes, river red gum on anabranches, lignum in lakes, shrubs on low rises and dunes with occasional rosewood. scalding Heavily grazed. Scalding common especially on coarser soils. Reservation None None None Key Areas 15, 40 Figure 3.8 Profile of the Wilcannia Plains Province (adapted from Morgan & Terrey 1992) Plains with low rises, pans and low dunes. Texture contrast soils. Bimble box and black box fringing low rises and in depressions, rosewood and shrubs on low rises. Black bluebush common in the south. Heavily grazed and scalded Land Profile Land Systems (in part) Darling Denian, Canally Teryawynia, Minor Acres Travellers, Gunnaramby, Sayers, Billabong minor Thackenbe. Geology Quaternary alluvials, Quaternary alluvials Quaternary alluvials Quaternary alluvials and aeolians minor aeolian Landform and Soils Darling River flood plain with main channel, billabongs, swamps and occasional low sandhills. Grey clay and sands Vegetation Black box woodlands and open woodlands with river cooba and areas of lignum. River red gum on levees. Condition Heavily grazed and scalded Reservation Kinchega NP (44 182ha) Key Areas To be determined sub-dominant dominant minor sub-dominant and aeolians Undulating plains and dunes, and higher alluvial plains. Sands, texture contrast soils and clays. Lower areas fringed by black box. Areas of prickly wattle, bluebush and woody shrubs. Local severe scalding and wind erosion Floodplains, backplains and distributary channels. Heavy clays, some texture contrast and sands. Scattered black box, areas of lignum and canegrass, occasional old man saltbush. River red gum, river cooba and occasional coolabah on larger channels Large overflow lakes and basins and associated lunettes. Clays, texture contrast earths and sands. Lignum on lake beds with black box fringing. Bluebush, sandhill canegrass and sparse belah and acacias on lunettes. Heavily grazed and scalded Wind and gully erosion of lunettes. Water levels manipulated in several areas for off-river storage. Cultivation of lake beds. Kinchega NP None Kinchega NP Figure 3.9 Profile of the Menindee Province (adapted from Morgan & Terrey 1992) dominant sub-dominant 68
16/08/02 Darling Riverine Plains Bioregion Background Report Land Profile Land Systems Anabranch Travellers Geology Quaternary alluvials Quaternary alluvials and aeolians Landform and Soils Floodplains, channels, billabongs and plains. Grey Large overflow lakes, lunettes and plains. Grey clays and clays, minor texture contrast Vegetation Black box open woodland with occasional river cooba and areas of lignum. River red gum on channels. co-dominant co-dominant sands Lignum and occasional black box on lake margins. Belah, white cypress and prickly wattle on lunettes. Condition Heavily grazed, local severe scalding Lunettes heavily grazed. Scalding and wind erosion Reservation None Nearie Lake NR (4 347ha) Key Areas To be determined Figure 3.10 Profile of the Great Darling Anabranch Province (adapted from Morgan & Terrey 1992) Land Profile Land Systems Darling, minor Canally and Wentworth Geology Quaternary alluvials, minor aeolian Landform and Soils Floodplain, main channels, billabongs, swamps, back channels and low dunes. Grey clays and sands Vegetation Black box open woodland with river cooba and areas of lignum. River red gum on major channels. Condition Heavily grazed, areas of severe scalding Reservation None Key Areas To be determined Figure 3.11 Profile of the Pooncarie-Darling Province (adapted from Morgan & Terrey 1992) The most common plant communities within the DRP are open woodlands dominated by Eucalyptus coolabah (coolibah), Eucalyptus largiflorens (black box) and Eucalyptus camaldulensis (river red gum) with significant areas of Eucalyptus populnea subsp. bimbil (bimble box) woodlands and grasslands and minor areas of shrublands (Cunningham et al. 1992; NWCMC 1996). On the northern fans there is a variety of communities including mulga, northern floodplain community, gidgee and brigalow, bimble box and white cypress pine and Mitchell grass plains. Along the Darling River from Bourke to the Menindee Lakes, communities change from a dominance of Northern Floodplain plant communities to Southern Riverine Woodlands, with belah and bluebush communities becoming increasingly common to the south (Walker 1991). Walker’s descriptions contain greater detail than other reports about plant species composition in the break down of the land systems into land units for the Western Division. 69
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DARLING RIVERINE PLAINS BIOREGION B
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For more information data contact t
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3.2 Vegetation Mapping and Descript
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10 APPENDICES 166 A CLIMATIC DATA B
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List of Maps Chapter 1 Map 1 Locati
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PROJECT SUMMARY This report forms p
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abbits are listed as key threatenin
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16/08/02 Darling Riverine Plains Bi
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Initial Phase Assessment Phase 16/0
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Appendix A: Mean Monthly Rainfall a
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Major Rangetype Rangetype Physiogra
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Appendix C : Native Flora Other Tha
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Family Scientific Name Common Name
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Family Scientific Name cretica Comm
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APPENDIX E: Fauna Other than Those
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Common Name Scientific Name No Reco
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Common 1983 1984 1985 1986 1987 198
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Common Name 1983 1984 1985 1986 198
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Taxa No Records Dataset Class Arach
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Taxa No Records Dataset Family Hebr
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Taxa No Records Dataset Tabanidae s
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Taxa No Records Dataset Berosus sp
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DARLING RIVERINE PLAINS BIOREGION Background Report

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