By Moses Mbendela Mlangeni - Nelson Mandela Metropolitan ...

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questions were unanswered (except for question 19 in some cases, which was not compulsory). The revealed sample sizes and valid responses are shown in Table 7.1. Table 7.1: Number of questionnaires completed and valid responses Kariega Swartkops Mngazi Mngazana Total Questionnaires completed 100 200 103 107 510 Valid responses 100 200 103 107 510 Most (65%) of the respondents selected to be interviewed were recreational users, followed by subsistence users (26%). Only three (or 0,6%) of the respondents said they were non-users while 38 (or 7,5%) of the respondents identified themselves as multi-users (Table 7.2). Table 7.2: Category of user/respondent Swartkops Kariega Mngazi Mngazana Total Recreation 175 84 38 37 334 Commercial/Subsistence 0 1 64 70 135 Multi-users 25 13 0 0 38 Non-users 0 2 1 0 3 Figure 7.1: Category of user/respondent multi-use (7%) subsistence (26%) non-use (1%) recreation (66%) 105
7.2.2 Socio-economic characteristic profiles The socio-economic characteristics of the sample of respondents selected at each estuary are summarised in Table 7.3 and Figures 7.2 and 7.3 below. Table 7.3: Socio-economic profile of respondents Averages Swartkops Kariega Mngazi Mngazana Household size (no. of people) 4.1 people 4.7 people 4.7 people 5.2 people Annual levies paid (in Rands) R194 R242 R172 R174 Distance from estuary of respondents’ current accommodation (in Km) 4km 2km 2.4km 2.7km Approximate worth of respondents’ vehicles and boats owned (in Rands) R44 245 R72 670 R59 196 R34 728 % of respondents who owned vehicles and boats 73% 82% 35% 47% Education level of respondents (no. of years) 12 yrs 13 yrs 10 yrs 9 yrs Annual pre-tax income (in Rands) R114 125 R141 750 R117 289 R68 932 In all cases the average size of the households surveyed was over 4 persons (Table 7.3). Annual levies paid ranged between R172 and R242. The difference in the annual levies could be attributed to different fee structures applied by the municipalities where the estuaries are located. Users in rural areas (Mngazi and Mngazana) travelled shorter distances to the estuary (2km) than did users in urban areas (4km). The average worth of boats and vehicles owned by users of the Kariega estuary was R72 670, which was more than double that of the Mngazi estuary users (R34 728). The average worth of vehicles and boats owned by those people who were interviewed around the Mngazana estuary amounted to R59 196. The Kariega estuary had the highest number of users owning vehicles and boats (82%) and the Mngazi estuary had the lowest (35%). The respondents using the Swartkops 106 and Kariega estuaries were more educated on average than users of the Mngazi
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A CONTINGENT VALUATION OF RIVER WAT
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ACKNOWLEDGEMENTS My sincere gratitu
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Four estuaries, the Swartkops, Kari
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CONTENTS Abbreviations…………
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2.3.3 Step 3: Calculating average b
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5.6 Identifying the target populati
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9.3 Conclusion on the appropriatene
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7.1 Number of questionnaires comple
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7.12 Relative importance attached t
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CHAPTER 1: SOUTH AFRICAN ESTUARIES
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for the estuaries. The study builds
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1.3.3 Estuarine bays/lagoons Estuar
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1.4.2 Sedimentation River mouth clo
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The biggest estuary in SA is St Luc
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1.6.6 Mangroves Mangroves are trees
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SA. Often, estuaries have unique bi
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it can result in increases in the a
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freshwater to estuaries. Recently e
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2.1 The market for estuary services
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However, the value thereby lost is
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they claim they are willing to pay
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2.3.1.3 The payment vehicle The pay
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left to state a figure based on the
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to the estuary. For this reason, st
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The approach assumes that sample si
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2.3.5.1 Incentives to misrepresent
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wrong answers and responses that ar
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plausibility of the questions and h
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CHAPTER 3: THE SWARTKOPS ESTUARY In
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egion and supplies water to the tow
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Swartkops estuary is incised chiefl
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visitors and the public in general
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3.3.3 Uses of the Swartkops estuary
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Table 3.4: Once-a-month count of bo
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3.3.3.2 Subsistence uses Bait colle
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complain that competition with ille
Page 74 and 75: 3.4 Identifying the target populati
Page 76 and 77: Table 3.8: Monthly flow volumes of
Page 78 and 79: CHAPTER 4: THE KARIEGA ESTUARY Chap
Page 80 and 81: length. The system has a low turbid
Page 82 and 83: Figure 4.2: Street Map of Kenton-on
Page 84 and 85: municipality have been investigated
Page 86 and 87: 4.5.1 Recreational uses Boating: Th
Page 88 and 89: 4.5.3 Commercial and industrial use
Page 90 and 91: swimming and other activities commo
Page 92 and 93: Table 4.5: Monthly flow volumes of
Page 94 and 95: 5.1 Physical description of the Mng
Page 96 and 97: 5.3 Water demand in the OR Tambo di
Page 98 and 99: Figure 5.3: The Port St Johns Water
Page 100 and 101: The Post Office said fishing permit
Page 102 and 103: 5.5.2 Subsistence uses Villagers re
Page 104 and 105: harvesting permits (KZN subsistence
Page 106 and 107: 5.6 Identifying the target populati
Page 108 and 109: Table 5.3: Mngazi River Bungalows v
Page 110 and 111: winter. After this water levels bui
Page 112 and 113: Mngazana River itself is approximat
Page 114 and 115: Avicennia and usually in or near wa
Page 116 and 117: 6.5 Water demand around the Mngazan
Page 118 and 119: Picnicking: The banks of the Mngaza
Page 120 and 121: main type of farm activity in the a
Page 122 and 123: An account of field experiences dur
Page 126 and 127: and Mngazana estuaries (Table 7.3).
Page 128 and 129: good understanding of the functions
Page 130 and 131: 7.7), indicating that a significant
Page 132 and 133: No. of people 250 200 150 100 50 0
Page 134 and 135: No of respondents 140 120 100 80 60
Page 136 and 137: and Mngazana) travelled shorter dis
Page 138 and 139: In the light of these statistical f
Page 140 and 141: Due to the respondents refusing to
Page 142 and 143: 8.3.2 Results and interpretation Re
Page 144 and 145: 8.4.2 Results and interpretation Th
Page 146 and 147: 8.5.2 Results and interpretation Fo
Page 148 and 149: In the predictive model the adjuste
Page 150 and 151: • The model is well fitted based
Page 152 and 153: • For the Swartkops and Mngazana
Page 154 and 155: Table 9.1: TWTP - selected estuarie
Page 156 and 157: 9.1.3 Size of user population By de
Page 158 and 159: 139 particular turned out to be too
Page 160 and 161: Table 9.4: The Kariega estuary user
Page 162 and 163: Table 9.6: The Mngazana estuary use
Page 164 and 165: BAIRD, D., MARAIS, J.F.K. AND BATE,
Page 166 and 167: BREEN, C. AND MCKENZIE, M. (2001).
Page 168 and 169: DEPARTMENT OF ENVIRONMENTAL AFFAIRS
Page 170 and 171: HANLEY, N. AND SPASH, C.L. (1993).
Page 172 and 173: LOFGREN, K-G. (1995). Market and ex
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NELSON MANDELA METROPOLITAN MUNICIP
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SCHALACHER, T.A. AND WOOLDRIDGE, T.
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WHITFIELD, A.K. (2000). Available S
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Region ¹ Mouth type ¹ Scientific
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Region ¹ M outh ty pe ¹ S c ienti
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Region ¹ Mouth type ¹ Scientific
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FILL IN THE GAPS IN THE PERSON’S
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12. WHAT LEVY PER YEAR ARE YOU WILL
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171 19. DO YOU HAVE ANY OTHER COMME
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high security, including patrols by
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APPENDIX 5: Some common fish found
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APPENDIX 7: Some common birds found
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APPENDIX 9: Field experiences - Mng
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APPENDIX 10: Some common fish found
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owned by white people from all arou
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APPENDIX 13:Trees of the Mngazi and
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APPENDIX 15: Example of monthly fis
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APPENDIX 16: Example of annual fish
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APPENDIX 17: Information brochure h
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“The entire issue as far as the u
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WHITFIELD, A.K. (2000). Available S
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