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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
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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.

Spp	Common name	Taxonomic name	Min	Avg	Max	IBA	Subregional IBA	RAMSAR
1016		Anas platyrhynchos	1	1.00	1
72		Scopus umbretta	1	1.95	6
256		Calidris pugnax	1	228.52	1500
269	Avocet, Pied	Recurvirostra avosetta	1	2.75	6
67	Bittern, Little	Ixobrychus minutus	1	1.00	1
212	Coot, Red-knobbed	Fulica cristata	5	86.67	337
50	Cormorant, Reed	Microcarbo africanus	1	24.26	117
47	Cormorant, White-breasted	Phalacrocorax lucidus	1	11.50	52
203	Crake, Black	Zaporina flavirostra	1	1.89	9
52	Darter, African	Anhinga rufa	1	7.83	31
95	Duck, African Black	Anas sparsa	1	4.25	14
10006	Duck, Domestic	Anas platyrhynchos domesticus	1	1.00	1
101	Duck, Fulvous Whistling	Dendrocygna bicolor	1	11.06	72
91	Duck, Knob-billed	Sarkidiornis melanotos	1	23.90	127
10014	Duck, Unidentified	Anas sp.	1	1.25	2
104	Duck, White-backed	Thalassornis leuconotus	1	11.33	37
100	Duck, White-faced Whistling	Dendrocygna viduata	8	307.55	1362
96	Duck, Yellow-billed	Anas undulata	1	45.70	137
58	Egret, Great	Ardea alba	1	2.33	5
60	Egret, Intermediate	Ardea intermedia	1	1.86	3
59	Egret, Little	Egretta garzetta	1	4.27	15
61	Egret, Western Cattle	Bubulcus ibis	3	113.45	443
149	Fish Eagle, African	Haliaeetus vocifer	1	1.00	1
86	Flamingo, Greater	Phoenicopterus roseus	1	1.00	1
89	Goose, Egyptian	Alopochen aegyptiaca	2	19.10	104
88	Goose, Spur-winged	Plectropterus gambensis	1	3.38	17
4	Grebe, Great Crested	Podiceps cristatus	1	1.00	1
6	Grebe, Little	Tachybaptus ruficollis	4	72.72	243
263	Greenshank, Common	Tringa nebularia	1	4.38	13
288	Gull, Grey-headed	Chroicocephalus cirrocephalus	1	50.00	398
287	Gull, Kelp	Larus dominicanus	32	32.00	32
167	Harrier, African Marsh	Circus ranivorus	1	1.50	2
64	Heron, Black	Egretta ardesiaca	1	1.00	1
55	Heron, Black-headed	Ardea melanocephala	1	4.91	26
56	Heron, Goliath	Ardea goliath	2	2.00	2
54	Heron, Grey	Ardea cinerea	1	4.78	17
57	Heron, Purple	Ardea purpurea	1	2.61	10
62	Heron, Squacco	Ardeola ralloides	1	6.80	35
63	Heron, Striated	Butorides striata	1	2.39	5
81	Ibis, African Sacred	Threskiornis aethiopicus	2	35.15	151
83	Ibis, Glossy	Plegadis falcinellus	1	45.68	650		500
84	Ibis, Hadada	Bostrychia hagedash	1	11.56	41
228	Jacana, African	Actophilornis africanus	1	6.27	17
395	Kingfisher, Giant	Megaceryle maxima	1	1.50	3
397	Kingfisher, Malachite	Corythornis cristatus	1	1.00	1
394	Kingfisher, Pied	Ceryle rudis	1	2.85	10
247	Lapwing, African Wattled	Vanellus senegallus	1	8.92	37
245	Lapwing, Blacksmith	Vanellus armatus	3	82.33	340
509	Martin, Brown-throated	Riparia paludicola	1	1.00	1
210	Moorhen, Common	Gallinula chloropus	1	5.39	29
172	Osprey, Western	Pandion haliaetus	1	1.00	1
241	Plover, Grey	Pluvialis squatarola	2	2.00	2
237	Plover, Kittlitz's	Charadrius pecuarius	2	8.75	21
238	Plover, Three-banded	Charadrius tricollaris	1	6.97	35
102	Pochard, Southern	Netta erythrophthalma	2	75.78	548	500	250	460
282	Pratincole, Black-winged	Glareola nordmanni	85	85.00	85		50
258	Sandpiper, Common	Actitis hypoleucos	1	5.86	31
251	Sandpiper, Curlew	Calidris ferruginea	2	18.33	50
262	Sandpiper, Marsh	Tringa stagnatilis	1	3.61	21
264	Sandpiper, Wood	Tringa glareola	1	43.08	288
90	Shelduck, South African	Tadorna cana	1	1.00	1
94	Shoveler, Cape	Anas smithii	1	8.50	74
250	Snipe, African	Gallinago nigripennis	3	3.00	3
85	Spoonbill, African	Platalea alba	1	2.75	4
270	Stilt, Black-winged	Himantopus himantopus	3	36.93	116
253	Stint, Little	Calidris minuta	1	65.82	450
78	Stork, Abdim's	Ciconia abdimii	21	21.00	21
79	Stork, Black	Ciconia nigra	3	3.00	3
80	Stork, White	Ciconia ciconia	6	6.00	6			1
76	Stork, Yellow-billed	Mycteria ibis	1	1.00	1
208	Swamphen, African	Porphyrio madagascariensis	1	2.83	7
884	Swan, Mute	Cygnus olor	2	2.00	2
99	Teal, Blue-billed	Anas hottentota	1	4.00	15
98	Teal, Cape	Anas capensis	1	4.74	27
97	Teal, Red-billed	Anas erythrorhyncha	1	27.06	135
290	Tern, Caspian	Hydroprogne caspia	2	2.00	2
305	Tern, Whiskered	Chlidonias hybrida	1	1.00	1
304	Tern, White-winged	Chlidonias leucopterus	1	147.00	751
274	Thick-knee, Water	Burhinus vermiculatus	2	2.00	2
10008	Wader, Unidentified	N/A N/A	240	240.00	240
685	Wagtail, African Pied	Motacilla aguimp	1	4.23	15
686	Wagtail, Cape	Motacilla capensis	2	23.26	71
689	Wagtail, Western Yellow	Motacilla flava	2	14.83	47

Sunday 22 December 2024 04:55
FitzPatrick Institute of African Ornithology
Department of Biological Sciences - University of Cape Town

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

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Rooiwal Sewage Works (25342814)

Gauteng

Information