NA019
Sperrgebiet


IBA Justification

The site was identified as important in 1998 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Black-necked Grebe Podiceps nigricollis LC non-breeding - 250-300 individuals A4i
Lesser Flamingo Phoeniconaias minor NT non-breeding - present A1
Ludwig's Bustard Neotis ludwigii EN resident 1998 present A3
Karoo Bustard Heterotetrax vigorsii LC resident 1998 present A3
Cape Cormorant Phalacrocorax capensis EN non-breeding - 1,228-6,000 individuals A1, A4i
African Oystercatcher Haematopus moquini LC resident - 20-50 breeding pairs A1, A4i
African Oystercatcher Haematopus moquini LC non-breeding - 78-296 individuals A1, A4i
Kelp Gull Larus dominicanus LC non-breeding - 354-1,433 individuals A4i
Damara Tern Sternula balaenarum LC breeding - present A1
Greater Crested Tern Thalasseus bergii LC non-breeding - 869-4,941 individuals A4i
Gray's Lark Ammomanopsis grayi LC resident 1998 present A3
Cape Long-billed Lark Certhilauda curvirostris LC resident 1998 present A3
Dune Lark Calendulauda erythrochlamys LC resident 1998 present A3
Black-eared Sparrow-lark Eremopterix australis LC resident 1998 present A3
Dune Lark Calendulauda erythrochlamys LC resident 1998 present A2, A3
Stark's Lark Spizocorys starki LC resident 1998 present A3
Namaqua Warbler Phragmacia substriata LC resident 1998 present A3
Cinnamon-breasted Warbler Euryptila subcinnamomea LC resident 1998 present A3
Layard's Warbler Curruca layardi LC resident 1998 present A3
Karoo Chat Emarginata schlegelii LC resident 1998 present A3
Sickle-winged Chat Emarginata sinuata LC resident 1998 present A3
Tractrac Chat Emarginata tractrac LC resident 1998 present A3
Black-headed Canary Serinus alario LC resident 1998 present A3

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (1998).


IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2001 not assessed medium not assessed
Was the whole site assessed? State assessed by Accuracy of information
yes unset good

Pressure (threats to the trigger species and/or their habitats)
Threat level 1 Threat level 2 Timing Scope Severity Result
Biological resource use fishing & harvesting aquatic resources - unintentional effects: large scale happening now some of area/population (10-49%) slow but significant deterioration medium
Energy production and mining mining and quarrying happening now some of area/population (10-49%) slow but significant deterioration medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other conservation action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Tsau // Khaeb (Sperrgebiet) National Park 2,181,200 is identical to site 0
Sperrgebiet National Park 2,174,921 protected area contained by site 2,174,921
Orange River Mouth Ramsar Site, Wetland of International Importance 500 protected area overlaps with site 500
Namibian Islands Marine Protected Area Marine Protected Area 949,700 protected area is adjacent to site 0
Namib-Naukluft National Park 5,076,600 protected area is adjacent to site 0
Namib Sand Sea World Heritage Site (natural or mixed) 3,077,700 protected area is adjacent to site 0
Ai-Ais Hot Springs National Park 435,400 protected area is adjacent to site 0

Habitats

Habitat (IUCN level 1) Habitat detail Extent (% of site)
Rocky areas (eg. inland cliffs, mountain peaks) Inselbergs, kopjes & inland cliffs -
Grassland -
Desert Absolute desert, Coastal desert, Gravel and sand plains, Stone desert -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
agriculture -
nature conservation and research -
urban/industrial/transport -


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sperrgebiet. Downloaded from https://datazone.birdlife.org/site/factsheet/sperrgebiet-iba-namibia on 28/02/2024.