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Grootvaly Wetland Reserve (26142829)

Gauteng

CWAC status REGISTERED-COUNTED REGULARLY
Authority Private
Management status UNKNOWN
Conservation status UNPROTECTED
IBA information SA021 - BLESBOKSPRUIT
Ramsar information
Heritage information
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Information 

Date_registered
1999-07-25
Brief_description
Part of the Blesbokspruit system, with open water, reedbeds and marshy habitat. Supports a wide variety of waterbirds, usually in small to moderate numbers, but the winter 1994 count was relatively high, with maximum counts of Glossy Ibis, Egyptian and Spurwinged Geese, Yellowbilled Duck and Redbilled Teal. Number of species, total count and total biomass all show a decline during the survey period; winter counts of Greyheaded Gull, Purple Gallinule and several waterfowl are declining, while winter Glossy Ibis numbers crashed after 1994. In contrast, winter numbers of Sacred Ibis are increasing. Egrets, Squacco Heron and Black- crowned Night Heron occur predominantly in summer. Blesbokspruit is severely threatened by discharge of mine water which drastically increases total water volume, maintains artificially high water levels in the dry season, and contains many pollutants, including salt.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
269Avocet, PiedRecurvirostra avosetta110.1419  
67Bittern, LittleIxobrychus minutus11.502   
212Coot, Red-knobbedFulica cristata5124.50450   
50Cormorant, ReedPhalacrocorax africanus14.8117   
47Cormorant, White-breastedPhalacrocorax carbo17.6340   
199Crake, AfricanCrecopsis egregia11.001
203Crake, BlackAmaurornis flavirostris12.937
52Darter, AfricanAnhinga rufa11.674   
95Duck, African BlackAnas sparsa22.002   
101Duck, FulvousDendrocygna bicolor111.6748   
1016Duck, MallardAnas platyrhynchos11.001
100Duck, White-facedDendrocygna viduata17.7117   
96Duck, Yellow-billedAnas undulata225.9671   
61Egret, CattleBubulcus ibis15.4212   
58Egret, GreatEgretta alba11.001   
59Egret, LittleEgretta garzetta12.407   
86Flamingo, GreaterPhoenicopterus ruber112.5024   
89Goose, EgyptianAlopochen aegyptiacus27.9632   
88Goose, Spur-wingedPlectropterus gambensis111.43120   
6Grebe, LittleTachybaptus ruficollis16.3322   
263Greenshank, CommonTringa nebularia11.001   
288Gull, Grey-headedLarus cirrocephalus113.3682   
64Heron, BlackEgretta ardesiaca12.254   
55Heron, Black-headedArdea melanocephala12.255   
56Heron, GoliathArdea goliath11.001   
54Heron, GreyArdea cinerea13.8013   
57Heron, PurpleArdea purpurea11.934   
62Heron, SquaccoArdeola ralloides13.7523   
81Ibis, African SacredThreskiornis aethiopicus11.642   
83Ibis, GlossyPlegadis falcinellus211.0034   
84Ibis, HadedaBostrychia hagedash13.006   
228Jacana, AfricanActophilornis africanus15.009  
397Kingfisher, MalachiteAlcedo cristata11.252
394Kingfisher, PiedCeryle rudis12.003
247Lapwing, African WattledVanellus senegallus12.003   
245Lapwing, BlacksmithVanellus armatus210.6724   
167Marsh-harrier, AfricanCircus ranivorus11.502
210Moorhen, CommonGallinula chloropus125.89118   
69Night-Heron, Black-crownedNycticorax nycticorax12.255  
361Owl, MarshAsio capensis11.001
238Plover, Three-bandedCharadrius tricollaris13.4110   
102Pochard, SouthernNetta erythrophthalma15.2715   
197Rail, AfricanRallus caerulescens11.583
256Ruff, RuffPhilomachus pugnax178.09518  
258Sandpiper, CommonActitis hypoleucos12.504  
251Sandpiper, CurlewCalidris ferruginea13.006  
262Sandpiper, MarshTringa stagnatilis14.8322   
264Sandpiper, WoodTringa glareola14.4011   
90Shelduck, South AfricanTadorna cana33.003   
94Shoveler, CapeAnas smithii211.1958   
250Snipe, AfricanGallinago nigripennis16.8225   
85Spoonbill, AfricanPlatalea alba11.252   
270Stilt, Black-wingedHimantopus himantopus28.6922  
253Stint, LittleCalidris minuta230.60114   
208Swamphen, African PurplePorphyrio madagascariensis16.2614  
98Teal, CapeAnas capensis23.7710   
99Teal, HottentotAnas hottentota224.8568   
97Teal, Red-billedAnas erythrorhyncha243.26355   
305Tern, WhiskeredChlidonias hybrida18.7126   
304Tern, White-wingedChlidonias leucopterus117.8687   
10008Wader, UnidentifiedN/A N/A22.503
686Wagtail, CapeMotacilla capensis12.948
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Friday 24 November 2017 04:55
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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