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The site was identified as important in 2009 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Short-tailed Shearwater Ardenna tenuirostris	LC	resident	1978-1995	1,430,551 nests	A4ii
Pacific Gull Larus pacificus	LC	resident	-	456 breeding pairs	A4i

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2020) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Shrubland	very poor (< 40%)	very poor (< 40%)	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	likely in short term (within 4 years)	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Climate change and severe weather	likely in short term (within 4 years)	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Pollution	likely in short term (within 4 years)	whole area/population (>90%)	slow but significant deterioration	high
Biological resource use	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Very little or no conservation action taking place	low

Year	Protected Area	Designation	% overlap with IBA
1991	Seal Islands W.R.	Nature Conservation Reserve	2
1992	Wilsons Promontory Islands	Remote and Natural Area - Schedule 6, National Parks Act	68
1992	Seal Islands R.N.A	Remote and Natural Area - not scheduled under NPA	5
1995	Wilsons Promontory National Park	National Park	69
1996	Anser Island	Reference Area	12
1999	Rodondo Island	Nature Reserve	12
1999	West Moncoeur Island	Nature Reserve	2
2011	East Moncoeur Island	Conservation Area	2

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		10
Grassland	Tussock grasslands	major (>10)
Shrubland	Other shrublands	minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	major (>10)
tourism/recreation	minor (<10)
not utilised	minor (<10)
urban/industrial/transport	minor (<10)

Victorian State Government, with management the responsibility of Parks Victoria; Parks and Wildlife Service Tasmania; Tasmanian Department of Primary Industries and Water.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Wilsons Promontory Islands (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/wilsons-promontory-islands-iba-australia on 22/11/2024.