Wetland & Fish Ecology - Enviro Dynamics Namibia

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114 Asteraceae Asteraceae Asteraceae Asteraceae Asteraceae Asteraceae Epaltes gariepina Geigeria ornativa Hirpicium gorterioides Nicolasia costata Sphaeranthus peduncularis subsp rogersii Vernonia poskeana Monocotyledonae Alismataceae Hydrocharitaceae Hydrocharitaceae Aponogetonaceae Liliaceae Liliaceae Liliaceae Liliaceae Liliaceae Liliaceae Amaryllidaceae Commelinaceae Eriocaulaceae Burnatia enneandra Lagarosiphon cordofanus Ottelia exserta Aponogeton junceus Camptorrhiza strumosa Dipcadi crispum Eriospermum rautanenii Ornithogalum rautanenii Scilla sp Trachyandra arvensis Crinum rautanenianum Commelina subulata Eriocaulon cinereum Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Andropogon eucomus Aristida adscensionis Aristida stipoides Brachiaria deflexa Brachiaria humidicola Brachiaria schoenfelderi Draft Environmental Impact Assessment: Oshakati Flood Mitigation Project Specialist Study: Wetland Ecology and Fish Ecology Imputs July 2012
115 Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Poaceae Brachiaria xantholeuca Dactyloctenium aegyptium Digitaria milanjiana Diplachne cuspidate Diplachne fusca Echinochloa colona Echinochloa holubii Echinochloa stagnina Elytrophorus globularis Eragrostis biflora Eragrostis cylindriflora Eragrostis gangetica Eragrostis inamoena Eragrostis lappula Eragrostis membranacea Eragrostis rotifer Eragrostis viscose Microchloa kunthii Odyssea paucinervis Oryza longistaminata Oryzidium barnardii Pogonarthria fleckii Setaria pallide-fusca Sporobolus coromandelianus Sporobolus fimbriatus Sporobolus ioclados Draft Environmental Impact Assessment: Oshakati Flood Mitigation Project Specialist Study: Wetland Ecology and Fish Ecology Imputs July 2012
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PROPOSED FLOOD MITIGATION MEASURES
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ii EXECUTIVE SUMMARY The Cuvelai Ri
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iv Decreased surface area of iishan
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vi CONTENTS EXECUTIVE SUMMARY .....
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viii 4.9 IMPACTS OF REMOVAL OF VEGE
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x Figure 4-7 Raised floor of bridge
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1 1 INTRODUCTION 1.1 BACKGROUND: Th
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3 were also still present although
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5 2 LEGAL AND REGULATORY REQUIREMEN
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7 3.1.1 CUVELAI WETLAND SYSTEM: The
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9 Figure 3-1 below is a map of the
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11 In the 1950s and 1960s, a progra
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13 Recommendations to the Departmen
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15 invertebrate fauna by Nakanwe, (
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17 possibly via the Calueque-Oshaka
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19 harvesting fish along the Ondang
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21 from survivors from the last flo
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23 As this underlines the importanc
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25 Discussion with Mr L. Hango, Hyd
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27 A full record of the discussion
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29 Oreochromis macrochir Greenhead
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31 26 June 2012 Site 5 DIKE 10 Oshi
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33 Oshanas at end of canal, Dec 198
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35 Fish species Common names Iishan
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37 Fish species Common names Iishan
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39 The following sizes of fish were
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41 4 IMPACT ASSESMENT (OF THE DIKE
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43 Channing and Griffin (1993) and
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45 A) Impact related to dike and it
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47 ISSUE POTENTIAL IMPACT UNMANAGED
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49 blooms as has happened in Gorean
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51 A) Impact related to dike and it
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55 4.4 IMPACTS OF ALTERED FLOWS (VE
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57 Figure 4-3 Inakulo Yomadhiya Gra
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59 High fishing pressure can be exp
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Page 75 and 76: 63 ISSUE POTENTIAL IMPACT UNMANAGED
Page 77 and 78: 65 During low floods, especially af
Page 81 and 82: 69 Okatana channel of marginal vege
Page 83 and 84: 71 4.6 IMPACTS ON FROGS (PARTICULAR
Page 87 and 88: 75 4.7.2 IMPACT OF DEEPENING AND LI
Page 91 and 92: 79 4.8 IMPACTS OF FLOODGATE OPERATI
Page 95 and 96: 83 4.9 IMPACTS OF REMOVAL OF VEGETA
Page 97 and 98: 85 Although only one study on the e
Page 101 and 102: 89 4.10 IMPACTS OF DEEPENING THE CH
Page 105 and 106: 93 4.11 HEALTH IMPACTS/SPREAD OF BI
Page 107 and 108: 95 POTENTIAL IMPACT UNMANAGED MANAG
Page 109 and 110: 97 4.12 COMMENT ON POTENTIAL FOR FI
Page 111 and 112: 99 This includes following the natu
Page 113 and 114: 101 5 CONCLUSIONS AND RECOMMENDATIO
Page 115 and 116: 103 6 REFERENCES Berry, H.H. (1972)
Page 117 and 118: 105 Geiss, W. (1971). A preliminary
Page 119 and 120: 107 Van der Waal, B.C.W. (2000a). F
Page 121 and 122: 109 Mr Shakelia responded that the
Page 123 and 124: 111 his earlier studies to see whic
Page 125: 113 Amaranthaceae Nymphaeceae Vahli
Page 129 and 130: 117 Cypercaeae Cypercaeae Cypercaea
Page 131 and 132: 119 Class: Branchiopoda Order: Anos
Page 133 and 134: 121 Sars 1909 Macrothrix spinosa 18
Page 135 and 136: 123 7 1 0 Osprey Pandion haliactus
Page 137 and 138: 125 APPENDIX 3: Field Notes FIELD N
Page 139 and 140: 127 Do not foresee any impacts of w
Page 141 and 142: 129 B) FISH SURVEY RESULTS - ACTUAL
Page 143 and 144: 131 Site 4 Dike 3 Tuesday 25 June T
Page 145 and 146: 133 Site 7 Thursday 28 June - Deep
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Wetland & Fish Ecology - Enviro Dynamics Namibia

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