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Year of most recent IBA criteria assessment: 1998

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Cape Francolin Pternistis capensis	LC	resident	1998	present	A3
Blue Crane Anthropoides paradiseus	VU	non-breeding	-	2,914-3,484 individuals	A1, A4i
Black Harrier Circus maurus	EN	resident	-	present	A1
Cape Long-billed Lark Certhilauda curvirostris	LC	resident	1998	present	A3
Cape Bulbul Pycnonotus capensis	LC	resident	1998	present	A3
Cape Sugarbird Promerops cafer	LC	resident	1998	present	A2, A3
Orange-breasted Sunbird Anthobaphes violacea	LC	resident	1998	present	A2, A3
Cape Siskin Crithagra totta	LC	resident	1998	present	A2, A3

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Threats to the site (pressure)
Threat Level 1	Threat Level 2	Timing	Scope	Severity	Result
Agricultural expansion and intensification	annual & perennial non-timber crops - agro-industry farming	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Agricultural expansion and intensification	annual & perennial non-timber crops - shifting agriculture	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	livestock farming and ranching (includes forest grazing) - agro-industry grazing, ranching or farmin	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Agricultural expansion and intensification	livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	hunting & collecting terrestrial animals - persecution/control	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Climate change and severe weather	drought	likely in long term (beyond 4 years)	whole area/population (>90%)	slow but significant deterioration	medium
Climate change and severe weather	habitat shifting and alteration	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Climate change and severe weather	temperature extremes	likely in long term (beyond 4 years)	whole area/population (>90%)	slow but significant deterioration	medium
Energy production and mining	renewable energy	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Human intrusions and disturbance	recreational activities	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	invasive non-native/alien species/diseases - named species	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Invasive and other problematic species and genes	problematic native species/diseases - named species	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	dams & water management/use - abstraction of surface water (agricultural use)	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	fire & fire suppression - increase in fire frequency/intensity	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	other ecosystem modifications	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	agricultural & forestry effluents - herbicides and pesticides	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Pollution	agricultural & forestry effluents - nutrient loads	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	domestic & urban waste water - type unknown/unrecorded	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Pollution	excess energy - noise pollution	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	industrial & military effluents - type unknown/unrecorded	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Residential and commercial development	commercial and industrial development	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Residential and commercial development	housing and urban areas	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Residential and commercial development	tourism and recreation areas	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Transportation and service corridors	roads and railroads	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Transportation and service corridors	utility & service lines	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium

Condition of habitat (state)
Habitat	Habitat Detail	Reference Area (ha)	Actual Area (ha)	% of habitat remaining	% of carrying capacity (overall)	Result
Artificial/Terrestrial	Arable land	0	0	moderate (70-90%)	moderate (70-90%)	unfavourable
Shrubland	Shrubland - Cape (fynbos)	0	0	very poor (< 40%)	poor (40-69%)	very unfavourable

Condition of key/trigger populations (state)
Scientific	Common	TargetPop	ActualPop	Units	Remaining	Result
Anthropoides paradiseus	Blue Crane	6000	6000	individuals	100	favourable
Neotis denhami	Denham's Bustard	195	195	individuals	100	favourable
Gyps coprotheres	Cape Vulture	210	210	individuals	100	favourable
Circus maurus	Black Harrier	100	100	individuals	100	favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Little/none of site covered (<10%)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

For more information about IBA monitoring please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Witsand Local Nature Reserve	Nature Reserve	8	protected area overlaps with site	0
Werner Frehse Nature Reserve	Nature Reserve	166	protected area contained by site	0
Vogelgat Private Nature Reserve	Nature Reserve	676	protected area overlaps with site	0
The Lagoon 2 Private Nature Reserve	Nature Reserve	39	protected area overlaps with site	0
Ten Einde Private Nature Reserve	Nature Reserve	185	protected area contained by site	0
Stilbaai Marine Protected Area	Marine Protected Area	3,103	protected area overlaps with site	0
Stilbaai Fynbos Private Nature Reserve	Nature Reserve	10	protected area contained by site	0
Skulpiesbaai Local Nature Reserve	Nature Reserve	79	protected area contained by site	0
San Sebastian Private Nature Reserve	Nature Reserve	457	protected area overlaps with site	0
Salmonsdam Provincial Nature Reserve	Nature Reserve	713	protected area is adjacent to site	0
Rhenosterkop Private Nature Reserve	Nature Reserve	1,005	protected area contained by site	0
Pauline Bohnen Nature Reserve	Nature Reserve	387	protected area is adjacent to site	0
Mosselbankfontein Private Nature Reserve	Nature Reserve	246	protected area contained by site	0
Maanschynkop Nature Reserve	Nature Reserve	785	protected area overlaps with site	0
Jongensgat Private Nature Reserve	Nature Reserve	145	protected area contained by site	0
Heidelberg Nature Reserve	Nature Reserve	16	protected area overlaps with site	0
Hasekraal Private Nature Reserve	Nature Reserve	2,695	protected area contained by site	0
Hannes Zaaiman Private Nature Reserve	Nature Reserve	166	protected area contained by site	0
Groot Dam Private Nature Reserve	Nature Reserve	181	protected area overlaps with site	0
Gouritz Cluster Biosphere Reserve	UNESCO-MAB Biosphere Reserve	3,189,557	protected area overlaps with site	0
Freshwater Sands Private Nature Reserve	Nature Reserve	773	protected area overlaps with site	0
Duivenhoksriviermond Private Nature Reserve	Nature Reserve	285	protected area contained by site	0
Duin-'n-See Private Nature Reserve	Nature Reserve	862	protected area contained by site	0
De Mond State Forest	Ramsar Site, Wetland of International Importance	986	protected area is adjacent to site	0
De Mond Nature Reserve	Forest Nature Reserve	928	protected area overlaps with site	0
De Hoop Vlei	Ramsar Site, Wetland of International Importance	638	protected area overlaps with site	0
De Hoop Nature Reserve	Nature Reserve	33,900	protected area overlaps with site	0
De Hoop Marine Protected Area	Marine Protected Area	28,887	protected area is adjacent to site	0
Cape Floral Region Protected Areas	World Heritage Site (natural or mixed)	1,094,742	protected area overlaps with site	0
Brian Mansergh Private Nature Reserve	Nature Reserve	84	protected area overlaps with site	0
Bosbokstrand Private Nature Reserve	Nature Reserve	963	protected area contained by site	0
Bontebok National Park	National Park	3,416	protected area contained by site	0
Blombos Private Nature Reserve	Nature Reserve	61	protected area overlaps with site	0
Annet Private Nature Reserve	Nature Reserve	126	protected area contained by site	0
Agulhas National Park	National Park	20,131	protected area overlaps with site	0

IUCN Habitat	Habitat detail	Extent (% of site)
Grassland		-
Shrubland	Shrubland - Cape (fynbos)	-
Artificial/Terrestrial	Arable land	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
nature conservation and research	-
tourism/recreation	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Overberg Wheatbelt. Downloaded from http://www.birdlife.org on 09/02/2023.