Motherwell NU 31 Housing Development, Nelson Mandela Bay Municipality, Eastern Cape
Total Page:16
File Type:pdf, Size:1020Kb
Draft EIR Report for the Motherwell NU 31 housing development in Motherwell, Nelson Mandela Bay Municipality Appendix C C1 – Vegetation Impact Assessment C2 – Archaeological Impact Assessment C3- Palaeontological Impact Assessment C4 – Social-economic Assessment CEN INTEGRATED ENVIRONMENTAL MANAGEMENT UNIT Environmental and Rural Development Specialist Specialist Vegetation Impact Assessment for the Motherwell NU 31 Housing Project April 2010 CEN Integrated Environmental Management Unit Project Title: Specialist Vegetation Impact Assessment for the Motherwell NU 31 Housing Project Report Prepared By: CEN Integrated Environmental Management Unit 36 River Road Walmer, Port Elizabeth. 6070 South Africa Phone (041) 581-2983 • Fax 086 504 2549 E-mail: [email protected] Specialist Vegetation Impact Assessment for the Motherwell NU 31 Housing Project 2 CEN Integrated Environmental Management Unit Table of Contents Table of Contents...........................................................................................................................................................3 List of Figures.................................................................................................................................................................4 List of Tables..................................................................................................................................................................4 Chapter 1: Introduction ..............................................................................................................................................5 1.1 Approach to the study .......................................................................................................................................5 1.2 Details and Expertise of Specialists Responsible for Investigation and Report Compilation.............................9 1.3 Declaration of Independence ..........................................................................................................................10 1.4 Limitations of the Study...................................................................................................................................11 Chapter 2: Situational Vegetation Description and Assessment ..............................................................................12 2.1 Vegetation description and sensitivity assessment .........................................................................................12 2.1.1 Sundays Thicket (ST).............................................................................................................................14 2.1.2 Dumping Area ........................................................................................................................................17 2.1.3 Motherwell Karroid Thicket area (MKT)..................................................................................................18 2.1.4 Agricultural area .....................................................................................................................................20 2.1.5 Degraded area .......................................................................................................................................20 2.1.6 Species Lists ..........................................................................................................................................22 2.2 Assessment of impacts of the proposed development on vegetation .............................................................32 2.2.1 Loss of thicket habitat and consequent reduction in intrinsic biodiversity value .....................................32 2.2.2 Removal of vegetation will result in soil exposure in increased erosion potential...................................32 2.2.3 Loss of habitat for faunal species...........................................................................................................33 2.2.4 Loss of ecosystem services provided by thicket.....................................................................................33 2.2.5 Habitat fragmentation and edge effects..................................................................................................34 2.2.6 Reduced potential to meet NMBM conservation target for Motherwell Karroid Thicket..........................35 2.2.7 Change in agricultural land use impacts on ‘way of life’ and subsistence income of local community ...36 Chapter 3: Basic Re-vegetation, Rehabilitation and Landscaping Plan ...................................................................43 3.1 Planning..........................................................................................................................................................43 3.1.1 Nursery specifications ............................................................................................................................44 3.1.2 Removal and Storage of topsoil (extracted from CEN IEM Unit Environmental Management Plan for rehabilitation of thicket areas) ...............................................................................................................................44 3.2 Site Preparation for Re-planting (extracted from CEN IEM Unit Environmental Management Plan for rehabilitation of thicket areas)...................................................................................................................................45 3.3 Planting (Source: City of Cape Town Environmental Management Programme, Specification: Environmental Management Standard Re-vegetation Specification (2007)) ....................................................................................46 Chapter 4: References.............................................................................................................................................48 Appendix 1: GPS co-ordinates of selected species of special concern........................................................................49 Specialist Vegetation Impact Assessment for the Motherwell NU 31 Housing Project 3 CEN Integrated Environmental Management Unit List of Figures Figure 1: A Google Earth Image of the study area (outlined in yellow) included in the Vegetation Impact Assessment. .....................................................................................................................................................8 Figure 2: Map depicting the underlying geology and zones of vegetation change. Note a change in vegetation from Sundays Thicket to Motherwell Karroid Thicket as the geology changes from T-Qb to Ks (T-Qb: Limestone, sandstone, conglomerate, Ta: Calcareous sandstone, shelly limestone, conglomerate, Ks: Greenish-grey mudstone, sandstone).............................................................................................................14 Figure 3: A photo depicting typical vegetation in the areas zoned as ‘Sundays Thicket’. ...............................16 Figure 4: Another photo of vegetation in the area zoned as ‘Sundays Thicket’...............................................17 Figure 5: A view of the area zoned as ‘dumping area’. ...................................................................................18 Figure 6: A view of the area zoned as ‘Motherwell Karroid Thicket’. Note the large open spaces vegetated with low shrubland amongst thicket clumps. ...................................................................................................19 Figure 7: A photo of the area used by the local community for agricultural activities. .....................................20 Figure 8: Map indicating vegetation sensitivity and descriptions in 5 broad zones. ........................................21 Figure 9: A spatial indication of selected protected species observed during this field survey. Species protected in terms of the Nature and Environmental Conservation Ordinance No 19 of 1974 are scattered throughout the site. .........................................................................................................................................31 Figure 10: Extract from the NMBM MOSS Plan (2009) indicating the location of the site (outlined in red) in relation to critical biodiversity areas (CBA)......................................................................................................35 List of Tables Table 1: List of floral species on site, with an indication of their protection and/or threatened status, a list of declared invader and weed species, medicinal plants, useful plants, and those that will transplant easily.....24 Table 2: List of predicted impacts on vegetation as a result of the proposed Motherwell NU 31 housing project .............................................................................................................................................................37 Specialist Vegetation Impact Assessment for the Motherwell NU 31 Housing Project 4 CEN Integrated Environmental Management Unit Chapter Chapter 1: Introduction CEN Integrated Environmental Management Unit was appointed by Arcus GIBB (Port Elizabeth) to do a specialist Vegetation Impact Assessment as part of the Environmental Impact Assessment Process for the proposed Motherwell NU 31 Housing Project. The study area is outlined in Figure 1. The site is situated within the boundaries of Portion 2 of Farm 316 (25.55690°E, 33.77898°S), Uitenhage (SG no: C07600000000031600002), in Motherwell. It located approximately 4.5 km north of the lower Swartkops