Email: CS/ADU no: Password:  

Rooiwal Sewage Works (25342814)

Gauteng

CWAC status REGISTERED-COUNTED REGULARLY
Authority Private
Management status TOWN COUNCIL PROPERTY
Conservation status UNPROTECTED
IBA information
Ramsar information
Heritage information
View Cards Click here
   

Information 

Date_registered
1993-01-31
Brief_description
Open sewage tanks and several shallow sedimentation ponds, with fringing reedbeds and some floating vegetation. Holds a good variety of waterbirds; counts usually total c. 500 birds but were high in summer 1993 (large numbers of Cattle Egret, Sacred Ibis, Redknobbed Coot, Ruff and Whitewinged Tern), winter 1996 (1215 Whitefaced Duck) and summer 1997 (Cattle Egret, Wood Sandpiper, Ruff and Whitewinged Tern were numerous). Exceptional concentrations of large waterbirds are reflected in relatively high biomass totals for summer 1993 and winter 1996. High counts of Yellow Wagtails in four of six summers. Mild threats are posed by the periodic invasion of alien waterplants, the periodic drainage and scraping of sedimentation dams, and human disturbance during working hours.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
269Avocet, PiedRecurvirostra avosetta12.756  
67Bittern, LittleIxobrychus minutus11.001   
212Coot, Red-knobbedFulica cristata586.67337   
50Cormorant, ReedPhalacrocorax africanus124.26117   
47Cormorant, White-breastedPhalacrocorax carbo111.5052   
203Crake, BlackAmaurornis flavirostris11.899
52Darter, AfricanAnhinga rufa17.8331   
95Duck, African BlackAnas sparsa14.2514   
91Duck, CombSarkidiornis melanotos123.90127   
10006Duck, DomesticAnas platyrhynchos11.001
101Duck, FulvousDendrocygna bicolor111.0672   
1016Duck, MallardAnas platyrhynchos11.001
10014Duck, UnidentifiedN/A N/A11.252
104Duck, White-backedThalassornis leuconotus111.3337   
100Duck, White-facedDendrocygna viduata8307.551362   
96Duck, Yellow-billedAnas undulata145.70137   
61Egret, CattleBubulcus ibis3113.45443   
58Egret, GreatEgretta alba12.335   
59Egret, LittleEgretta garzetta14.2715   
60Egret, Yellow-billedEgretta intermedia11.863   
149Fish-eagle, AfricanHaliaeetus vocifer11.001
86Flamingo, GreaterPhoenicopterus ruber11.001   
89Goose, EgyptianAlopochen aegyptiacus219.10104   
88Goose, Spur-wingedPlectropterus gambensis13.3817   
4Grebe, Great CrestedPodiceps cristatus11.001   
6Grebe, LittleTachybaptus ruficollis472.72243   
263Greenshank, CommonTringa nebularia14.3813   
288Gull, Grey-headedLarus cirrocephalus150.00398   
287Gull, KelpLarus dominicanus3232.0032   
72Hamerkop, HamerkopScopus umbretta11.956   
64Heron, BlackEgretta ardesiaca11.001   
55Heron, Black-headedArdea melanocephala14.9126   
56Heron, GoliathArdea goliath22.002   
63Heron, Green-backedButorides striata12.395   
54Heron, GreyArdea cinerea14.7817   
57Heron, PurpleArdea purpurea12.6110   
62Heron, SquaccoArdeola ralloides16.8035   
81Ibis, African SacredThreskiornis aethiopicus235.15151   
83Ibis, GlossyPlegadis falcinellus145.68650 500 
84Ibis, HadedaBostrychia hagedash111.5641   
228Jacana, AfricanActophilornis africanus16.2717  
395Kingfisher, GiantMegaceryle maximus11.503
397Kingfisher, MalachiteAlcedo cristata11.001
394Kingfisher, PiedCeryle rudis12.8510
247Lapwing, African WattledVanellus senegallus18.9237   
245Lapwing, BlacksmithVanellus armatus382.33340   
167Marsh-harrier, AfricanCircus ranivorus11.502
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus15.3929   
172Osprey, OspreyPandion haliaetus11.001
241Plover, GreyPluvialis squatarola22.002   
237Plover, Kittlitz'sCharadrius pecuarius28.7521   
238Plover, Three-bandedCharadrius tricollaris16.9735   
102Pochard, SouthernNetta erythrophthalma275.78548500250500
282Pratincole, Black-wingedGlareola nordmanni8585.0085 50 
256Ruff, RuffPhilomachus pugnax1228.521500  
258Sandpiper, CommonActitis hypoleucos15.8631  
251Sandpiper, CurlewCalidris ferruginea218.3350  
262Sandpiper, MarshTringa stagnatilis13.6121   
264Sandpiper, WoodTringa glareola143.08288   
90Shelduck, South AfricanTadorna cana11.001   
94Shoveler, CapeAnas smithii18.5074   
250Snipe, AfricanGallinago nigripennis33.003   
85Spoonbill, AfricanPlatalea alba12.754   
270Stilt, Black-wingedHimantopus himantopus336.93116  
253Stint, LittleCalidris minuta165.82450   
78Stork, Abdim'sCiconia abdimii2121.0021   
79Stork, BlackCiconia nigra33.003   
80Stork, WhiteCiconia ciconia66.006   
76Stork, Yellow-billedMycteria ibis11.001   
208Swamphen, African PurplePorphyrio madagascariensis12.837  
884Swan, MuteCygnus olor22.002
98Teal, CapeAnas capensis14.7427   
99Teal, HottentotAnas hottentota14.0015   
97Teal, Red-billedAnas erythrorhyncha127.06135   
290Tern, CaspianSterna caspia22.002   
305Tern, WhiskeredChlidonias hybrida11.001   
304Tern, White-wingedChlidonias leucopterus1147.00751   
274Thick-knee, WaterBurhinus vermiculatus22.002   
10008Wader, UnidentifiedN/A N/A240240.00240
685Wagtail, African PiedMotacilla aguimp14.2315
686Wagtail, CapeMotacilla capensis223.2671
689Wagtail, YellowMotacilla flava214.8347
ADU logo Ramsar Wetlands International http://www.sanbi.org/


Friday 24 November 2017 04:58
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

Creative Commons License
This work is licensed under a
Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License