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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
African Penguin Spheniscus demersus	EN	resident	-	21,200 breeding pairs	A1, A4ii
African Penguin Spheniscus demersus	EN	non-breeding	-	60,000 individuals	A1, A4ii
Cape Gannet Morus capensis	EN	resident	-	59,000 breeding pairs	A1, A4ii
Cape Gannet Morus capensis	EN	non-breeding	-	140,000 individuals	A1, A4ii
African Oystercatcher Haematopus moquini	LC	resident	-	16-20 breeding pairs	A1, A4i
African Oystercatcher Haematopus moquini	LC	non-breeding	-	40-50 individuals	A1, A4i
Kelp Gull Larus dominicanus	LC	breeding	-	500-900 breeding pairs	A4i
Kelp Gull Larus dominicanus	LC	non-breeding	-	1,000-1,950 individuals	A4i
Roseate Tern Sterna dougallii	LC	breeding	-	180 breeding pairs	A4i
Roseate Tern Sterna dougallii	LC	non-breeding	-	400 individuals	A4i
Antarctic Tern Sterna vittata	LC	non-breeding	-	500-5,000 individuals	A4i
A4iii Species group - seabirds	n/a	resident	-	100,000-499,999 individuals	A4iii

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	marine and freshwater aquaculture - industrial aquaculture	likely in short term (within 4 years)	some of area/population (10-49%)	no or imperceptible deterioration	low
Biological resource use	fishing & harvesting aquatic resources - intentional use: lg scale	happening now	small area/few individuals (<10%)	moderate to rapid deterioration	low
Biological resource use	fishing & harvesting aquatic resources - intentional use: subsistence/sml scale	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Biological resource use	fishing & harvesting aquatic resources - unintentional effects: large scale	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Climate change and severe weather	storms and floods	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Climate change and severe weather	temperature extremes	likely in short term (within 4 years)	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Energy production and mining	oil and gas drilling	likely in short term (within 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium
Energy production and mining	renewable energy	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low
Human intrusions and disturbance	recreational activities	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low
Human intrusions and disturbance	work and other 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	small area/few individuals (<10%)	slow but significant deterioration	low
Invasive and other problematic species and genes	problematic native species/diseases - named species	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Pollution	agricultural & forestry effluents - herbicides and pesticides	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Pollution	air-borne pollutants - smog	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	excess energy - light pollution	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Pollution	garbage & solid waste	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	industrial & military effluents - oil spills	likely in short term (within 4 years)	whole area/population (>90%)	moderate to rapid deterioration	high
Residential and commercial development	commercial and industrial development	likely in short term (within 4 years)	whole area/population (>90%)	moderate to rapid deterioration	high
Residential and commercial development	housing and urban areas	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Residential and commercial development	tourism and recreation areas	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low
Transportation and service corridors	shipping lanes	happening now	small area/few individuals (<10%)	slow but significant deterioration	low

Condition of habitat (state)
Habitat	Habitat Detail	Reference Area (ha)	Actual Area (ha)	% of habitat remaining	% of carrying capacity (overall)	Result
Other		0	0	good (> 90%)	moderate (70-90%)	near favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	high

For more information about IBA monitoring please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Stag Island Provincial Nature Reserve	Nature Reserve	2	protected area contained by site	0
Stag Island (Algoa Bay)	Unknown	1	protected area contained by site	1
St. Croix Island (Algoa Bay)	Unknown	14	protected area contained by site	14
Jahleel Island (Algoa Bay)	Unknown	3	protected area contained by site	3
Brenton Island (Algoa Bay)	Unknown	3	protected area contained by site	3
Bird Island	Other Area	4	protected area contained by site	19
Algoa Bay Seal Island Provincial Nature Reserve	Nature Reserve	5	protected area contained by site	1
Algoa Bay Black Rocks Provincial Nature Reserve	Nature Reserve	1	protected area contained by site	1
Addo-Elephant National Park	National Park	140,644	protected area overlaps with site	0

IUCN Habitat	Habitat detail	Extent (% of site)
Shrubland		-
Rocky areas (eg. inland cliffs, mountain peaks)		-
Marine Coastal/Supratidal		-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
nature conservation and research	-

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

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Algoa Bay Islands: Addo Elephant National Park. Downloaded from http://www.birdlife.org on 13/08/2022.