2. Establish a Marine Protected Area on the estuary incorporating the most significantbird habitats and fish nursery areas as well as a representative section of all habitattypes present in the estuary (mudflat, salt marsh, submerged and emergentvegetation)3. Develop a zonation plan in which 50% of the MPA (not necessarily contiguous) isdeclared a no‐take zone;4. The whole protected area to be managed by the provincial (CapeNature), district(Overberg District Municipality) or local (Overstrand Municipality) authority.The details of the above will have to be finalised in consultation with stakeholders. <strong>Anchor</strong><strong>Environmental</strong> Consultants will draw up a detailed management plan including plans for theproposed protected area based on outcomes of the consultative process.5.8 Potential and need for restoration on the <strong>Uilkraals</strong> EstuaryThere is no specific legislation pertaining to the restoration of ecosystems. The estuary hasbeen highly modified and is classified as being largely modified, and has been identified as onein which there is a need for rehabilitation. In the case of the <strong>Uilkraals</strong> Estuary restoration of theestuary to a better state of health would be straightforward, and would mainly entail (in orderof priority):1. Restoration of the quantity of freshwater inflows;2. Restoration of water quality;3. Removing significant obstructions to flow; and4. Removal of alien vegetation.In general, the degree to which these factors should be managed to restore the health of thesystem depends largely on the vision that is developed for the estuary, and on its futureprotection status. Protection status will provide a strong case for the provision of restoringflow quality and quantity.<strong>Uilkraals</strong> Estuary <strong>Situation</strong> <strong>Assessment</strong>69<strong>Anchor</strong> <strong>Environmental</strong>
6. REFERENCESAdams, J.B., Bate, G., & O'Callaghan, M. 1999. Primary producers. In: B.R. Allanson & D. Baird(Eds.) Estuaries of South Africa, pp 91‐117. Cambridge University Press, Cambridge.Adams, J.B., Bornman, T. & C. Bezuidenhout. 2006. Olifants/Doring Ecological WaterRequirements Study Appendix D: Macrophyte specialist study.Barbier, E.B. 1994. Valuing environmental functions: tropical wetlands. Land Economics 70:155‐173.Barnes, K.N. 1996. Specialist bird report on the proposed resort development on Farm SandDown (estate number 200, Bredasdorp), and the impacts on the <strong>Uilkraals</strong> River Estuary.Avian Demography Unit Research Report No. 15.Breen, C.M. & McKenzie, M. 2001. Managing estuaries in South Africa: an introduction.Institute of Natural Resources, Pietermaritzburg. 66pp.Begg, G.W., 1984. The estuaries of Natal. Part 2. Natal Town and Regional Planning Report 55:1‐631.Brigham, S.D., Megonigal, J.P., Keller, J.K., Bliss, N.P. & Trettin, C. 2006. The carbon balance ofNorth American wetlands. Wetlands 26:889 – 916.Childers, D.L. & J.W. Day (Jr.) 1990. Marsh‐water column interactions in two Louisianaestuaries. II: Nutrient dynamics. Estuaries 13: 404‐417.Clark, J.R. 1977. Coastal Ecosystem Management. John Wiley and Sons, N.Y.Coetzee, J.C., J.B. Adams & G.C. Bate. 1997. A botanical importance rating of selected Capeestuaries. Water SA 23: 81‐93.Costanza, R., d'Arge, R., de Groot, R., Farber, S., Grasso, M., Hannon, B., Limburg, K., Naeem, S.,O'Neill, R.V., Paruelo, J., Raskin, R.G., Sutton, P. and van den Belt, M. 1997. The value ofthe world's ecosystem services and natural capital. Nature 387, 253‐259.Cooper, J.A.G., 2001. Geomorphological variability among microtidal estuaries from the wavedominatedSouth African coast. Geomorphology 40: 99‐122.Cooper, A., Wright, I., Mason, T., 1999. Geomorphology and sedimentology. In: Allanson, B.R.,Baird, D. (Eds.), Estuaries of South Africa. Cambridge University Press, Cambridge, pp. 5‐25Day, JH. 1981. Estuarine Ecology with Particular Reference to Southern Africa. AA Balkema,Cape Town.Department Of Water Affairs & Forestry (DWAF). 2004b. Thukela Bank: impacts of flow onprawn and fish catch. Thukela water flow decision support phase. IWR.Du Preez, D. & Sasman, M. 1999. Kraaibosch Dam <strong>Environmental</strong> Operational ManagementPlan. Ecosense report. 50pp.Field, J. G. & Griffiths, C.L. 1991. Littoral and sublittoral ecosystems of South Africa. In: A. C.Mathieson & P. H. Nienhuis. Intertidal and Littoral Ecosystems 24: 323‐346.Amsterdam, Elsevier.Forbes, A.T. 1974. Osmotic and ionic regulation in Callianassa kraussi Stebbing (CRUSTACEA :DECAPODA : THALASSINIDEA). Journal of Experimental Marine Biology 16: 301‐311.Fredette, T.J., R.J. Diaz, J. Von Montfrans & R.J. Orth. 1990. Secondary production within aseagrass bed (Zostera marina and Ruppia maritima) in lower Chesapeake Bay. Estuaries13: 431‐440.Gaigher, C.M. 1984. The effects of bridge building on the bloodworm population in the UilkraalRiver estuary. The Naturalist 28: 16‐18.Gale, B.A. 1998. Scoping report on the possible environmental effects of a proposed dam onthe <strong>Uilkraals</strong> River. Aquatic and catchment management consultants<strong>Uilkraals</strong> Estuary <strong>Situation</strong> <strong>Assessment</strong>70<strong>Anchor</strong> <strong>Environmental</strong>