Appendix Two Table 10 (cont) Indigenous Vegetation and Landforms - Pelorus Ecosystem Landform Components Geology Remnant Native Past and Potential Vegetation Native Vegetation 2. Moderately steep to steep Siliceous, Pelorus Forest Forest lower hill and mountain Group sedimentary Hard beech forest with rimu Hard beech-silver beech slopes rocks and weakly emergent, kamahi, ponga. forest. 0-700 m elevation developed Mixed broadleaf forest. Hard beech forest with rimu Marlborough Tawa forest with mixed emergent, kamahi, ponga. Schist broadleaf species. Rimu/tawa-mixed broadleaf Hard beech-silver beech forest. forest. 3. Undulating terraces, fans Pleistocene Forest and Treeland Forest and Treeland and terra ce remnants alluvium from Rimu-totara-matai-black Rimu-totara-matai-black 5-150 m elevation predominantly beech-tawa forest. beech-tawa forest. sedimentary and Black beech-matai forest. Black beech-matai forest. schistose rocks Rimu/black beech forest. Rimu/black beech forest. Silver beech-black beech- Silver beech-black beech- rimu forest. rimu forest. 4. Narrow sinuous floodplains Recent alluvium Forest Forest 5-20 m elevation from Lowland ribbonwood-kowhai Kahikatea-matai-totara predominantly treeland. forest. sedimentary and Kahikatea-matai forest. Lowland ribbonwood- schistose rocks Totara-matai forest. narrow-leaved lacebark- Shrublands and herbfields kowhai forest. Riparian flood zone Cabbage tree-harakeke shrublands and herbfields. tree-flaxland. Shrublands and Herbfields Riparian flood zone shrublands and herbfields. 5. Prograding delta/tidal flat Recent fluvial and Lowland ribbonwood-kowhai Lowland ribbonwood-kowhai [eg; P27/720930] estuarine deposits treeland. treeland. 0-3 m elevation Oioi rushland. Oioi rushland. Marsh ribbonwood coastal Marsh ribbonwood coastal shrubland. shrubland. A. The Physical Environment 1. Landforms/Geology Sedimentary strata and weakly developed schists with some foliation into layers; significant areas of colluvium, alluvium and estuarine deposits. Minor swamp deposits (Ronga Valley). Extensive, very steep to moderately steep inland hill and mountain slopes and summits; many kilometres of wide, well-developed terrace systems, fans and floodplains with excellent swale and bar development in places; large delta and tidal flats. Well-developed strath terraces where rivers have cut down through bedrock, as at Pelorus Bridge. Ecosystem centred on the Pelorus and lower Wakamarina catchments from the crest of the Richmond Range to the sea at Havelock. Alpine landforms non-glacial. Extensive mountain bluffs and very steep faces as a result of the orientation and tectonic folding of schists. Occasional swamps on alluvial terraces against toeslopes, and on floodplains. Rare coldwater springs. Regionally important geological features: Pelorus River delta system. App Two - 49