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Groenvlei Lake (34012252)

Western Cape

CWAC status REGISTERED-COUNTED REGULARLY
Authority Cape Nature
Management status UNKNOWN
Conservation status UNKNOWN
IBA information SA112 - OUTENIQUA MOUNTAINS
Ramsar information
Heritage information
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Information 

Date_registered
1996-01-24
Brief_description
The only South African drowned deflation basin lake, with no stream inflow and with seepage outlets to the sea. Extensive fringing and emergent sedgemarsh and reedmarsh, with surrounding rank grassland. Existing counts are too few and too restricted to reflect the site''s importance: it may hold significant numbers of Redchested Flufftail and other secretive rails, and of Little Bittern, while the uncommon Grass Owl occurs. Threats include uncontrolled burning, eutrophication, alien vegetation, and increasing Phragmites cover at the expense of other marsh vegetation, possibly due to cessation of grazing.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
67Bittern, LittleIxobrychus minutus12.006   
212Coot, Red-knobbedFulica cristata85336.421123   
48Cormorant, CapePhalacrocorax capensis132.7561   
50Cormorant, ReedPhalacrocorax africanus965.50175   
47Cormorant, White-breastedPhalacrocorax carbo120.2488   
203Crake, BlackAmaurornis flavirostris14.3414
52Darter, AfricanAnhinga rufa115.2475   
95Duck, African BlackAnas sparsa11.001   
104Duck, White-backedThalassornis leuconotus11.712   
100Duck, White-facedDendrocygna viduata22.503   
96Duck, Yellow-billedAnas undulata16.9725   
61Egret, CattleBubulcus ibis12.506   
58Egret, GreatEgretta alba11.001   
59Egret, LittleEgretta garzetta11.503   
149Fish-eagle, AfricanHaliaeetus vocifer11.938
89Goose, EgyptianAlopochen aegyptiacus12.235   
88Goose, Spur-wingedPlectropterus gambensis19.9051   
5Grebe, Black-neckedPodiceps nigricollis110.5020   
4Grebe, Great CrestedPodiceps cristatus19.56535025 
6Grebe, LittleTachybaptus ruficollis460.98302 250 
287Gull, KelpLarus dominicanus13.2912   
55Heron, Black-headedArdea melanocephala11.502   
54Heron, GreyArdea cinerea11.292   
57Heron, PurpleArdea purpurea14.3812   
83Ibis, GlossyPlegadis falcinellus22.002   
84Ibis, HadedaBostrychia hagedash14.0614   
395Kingfisher, GiantMegaceryle maximus11.453
397Kingfisher, MalachiteAlcedo cristata13.8117
394Kingfisher, PiedCeryle rudis13.3213
245Lapwing, BlacksmithVanellus armatus12.636   
167Marsh-harrier, AfricanCircus ranivorus11.603
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus15.0037   
74Openbill, AfricanAnastomus lamelligerus11.001   
172Osprey, OspreyPandion haliaetus11.001
238Plover, Three-bandedCharadrius tricollaris44.004   
197Rail, AfricanRallus caerulescens12.206
90Shelduck, South AfricanTadorna cana99.009   
94Shoveler, CapeAnas smithii22.002   
85Spoonbill, AfricanPlatalea alba12.003   
270Stilt, Black-wingedHimantopus himantopus33.003  
208Swamphen, African PurplePorphyrio madagascariensis17.2116  
99Teal, HottentotAnas hottentota12.406   
97Teal, Red-billedAnas erythrorhyncha11.001   
290Tern, CaspianSterna caspia12.207   
291Tern, CommonSterna hirundo114.5034   
10009Tern, UnidentifiedN/A N/A11.001
274Thick-knee, WaterBurhinus vermiculatus12.003   
0Unknown, UnknownN/A N/A821.8647
685Wagtail, African PiedMotacilla aguimp33.003
686Wagtail, CapeMotacilla capensis12.5910
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Saturday 23 September 2017 02:09
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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