Troubridge Island (Australia) IBA | Details

Troubridge Island

Current view: Data table and detailed info

IBA Justification

The site was identified as internationally important for bird conservation 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 List	Season (year/s of estimate)	Size	IBA criteria
Black-faced Cormorant Phalacrocorax fuscescens	LC	resident (1985)	4,000 birds	A4i
Silver Gull Larus novaehollandiae	LC	resident (1981)	10,000 pairs	A4i
Fairy Tern Sternula nereis	VU	breeding (1980–2008)	5–40 pairs	A1, A4i

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2008) is shown below.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2008	not assessed	high	not assessed
Whole site assessed?	State assessed by	Accuracy of information
yes	unset	medium

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happening now	whole of population/area (>90%)	slow decline (1–10% over 3 generations)	high
Climate change and severe weather	likely in long term (>4 years)	whole of population/area (>90%)	moderate decline (10–30% over 3 generations)	high
Human intrusions and disturbance	happening now	whole of population/area (>90%)	no or slight decline (<1% over 3 generations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

IBA Protection

Year	Protected Area	Designation (management category)	% coverage of IBA
1986	Troubridge Island	Conservation Park (III)	38
2009	Lower Yorke Peninsula	Marine Park (II)	100

Habitats

Habitat	% of IBA	Habitat detail
Introduced vegetation	major (>10)
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	major (>10)
Shrubland	major (>10)	Closed shrublands & low closed woodlands

Land use

Land use	% of IBA
nature conservation and research	major (>10)
tourism/recreation	minor (<10)

Land ownership

South Australian Government; managed by the Department for Environment and Heritage with lighthouse cottages leased to a commercial operator.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Troubridge Island (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/troubridge-island-iba-australia on 23/12/2024.