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Ghio Pans (33382634)

Eastern Cape

CWAC status REGISTERED-COUNTED IRREGULARLY
Authority Private
Management status UNKNOWN
Conservation status UNKNOWN
IBA information
Ramsar information
Heritage information
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Information 

Date_registered
1994-01-08
Brief_description
Erratically flooded pans, with some reeds (mainly Phragmites). A good variety of waterbirds occurs. Large variations in counts of ducks, shorebirds and other species, in summer and winter, reflect variations in water levels due to area's uncertain and erratic rainfall; pans need heavy rain to flood, and most inflow is sheetwash from higher up valley. Formerly, water inflow after dry periods was followed by proliferation of small aquatic crustacea (Daphnia); numbers of ducks and shorebirds (especially Blackwinged Stilt) arrived to breed, the young apparently being dependent on the crustacean food supply (A.J. Tree). In 1995 a large population of fish-eating birds occurred after bream entered the system during the 1994-95 flood and bred prolifically. Great recent increases in Ruff numbers possibly associated with increase in Diptera following increased sewage inflow (A.J. Tree). A recent and severe threat is influx of sewage from nearby Ostrich farm paddocks, through which sheetwash flows; high concentrations of Daphnia no longer occur and breeding birds are much less numerous.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
212Coot, Red-knobbedFulica cristata9102.08370   
50Cormorant, ReedPhalacrocorax africanus18.8038   
47Cormorant, White-breastedPhalacrocorax carbo1111.0011   
203Crake, BlackAmaurornis flavirostris11.502
52Darter, AfricanAnhinga rufa11.001   
103Duck, MaccoaOxyura maccoa22.002   
100Duck, White-facedDendrocygna viduata22.002   
96Duck, Yellow-billedAnas undulata245.38117   
61Egret, CattleBubulcus ibis2626.0026   
58Egret, GreatEgretta alba25.0010   
59Egret, LittleEgretta garzetta12.605   
60Egret, Yellow-billedEgretta intermedia11.001   
149Fish-eagle, AfricanHaliaeetus vocifer11.252
89Goose, EgyptianAlopochen aegyptiacus18.5842   
88Goose, Spur-wingedPlectropterus gambensis12.757   
6Grebe, LittleTachybaptus ruficollis213.3333   
263Greenshank, CommonTringa nebularia13.005   
287Gull, KelpLarus dominicanus11.502   
72Hamerkop, HamerkopScopus umbretta11.001   
55Heron, Black-headedArdea melanocephala13.009   
54Heron, GreyArdea cinerea14.9012   
57Heron, PurpleArdea purpurea22.002   
81Ibis, African SacredThreskiornis aethiopicus37.0014   
84Ibis, HadedaBostrychia hagedash22.503   
394Kingfisher, PiedCeryle rudis12.003
245Lapwing, BlacksmithVanellus armatus27.7623   
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus24.258   
236Plover, Chestnut-bandedCharadrius pallidus11.001   
233Plover, Common RingedCharadrius hiaticula28.6723   
237Plover, Kittlitz'sCharadrius pecuarius211.8735   
238Plover, Three-bandedCharadrius tricollaris14.1015   
235Plover, White-frontedCharadrius marginatus11.001   
102Pochard, SouthernNetta erythrophthalma22.002   
256Ruff, RuffPhilomachus pugnax272.29230  
251Sandpiper, CurlewCalidris ferruginea13.808  
262Sandpiper, MarshTringa stagnatilis28.6330   
264Sandpiper, WoodTringa glareola112.7538   
90Shelduck, South AfricanTadorna cana119.3563   
94Shoveler, CapeAnas smithii219.0772   
250Snipe, AfricanGallinago nigripennis66.006   
85Spoonbill, AfricanPlatalea alba17.5738   
270Stilt, Black-wingedHimantopus himantopus226.39137  
253Stint, LittleCalidris minuta1248.25102   
79Stork, BlackCiconia nigra13.506   
98Teal, CapeAnas capensis23.335   
97Teal, Red-billedAnas erythrorhyncha229.9270   
290Tern, CaspianSterna caspia11.001   
291Tern, CommonSterna hirundo11.001   
305Tern, WhiskeredChlidonias hybrida44.004   
686Wagtail, CapeMotacilla capensis15.4212
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Friday 22 September 2017 06:54
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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