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The site was identified as internationally important for bird conservation in 2008 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
Rhea pennata	NR	breeding (2001–2003)	1,000-2,499 birds	A1
Patagonian Tinamou Tinamotis ingoufi	LC	resident (2001–2003)	present	A3
Hooded Grebe Podiceps gallardoi	CR	breeding (1997)	1,000-2,499 birds	A1, A2, A3, A4i
Chilean Flamingo Phoenicopterus chilensis	NT	passage (2001–2003)	50-249 birds	A1
Magellanic Plover Pluvianellus socialis	VU	passage (2001–2003)	< 50 birds	A1, A2, A3
Short-billed Miner Geositta antarctica	LC	breeding (2001–2003)	250-999 birds	A2, A3
Cinnamon-bellied Ground-tyrant Muscisaxicola capistratus	LC	resident (2001–2003)	present	A3
Chocolate-vented Tyrant Neoxolmis rufiventris	LC	breeding (2001–2003)	50-249 birds	A2, A3
Patagonian Yellow-finch Sicalis lebruni	LC	resident (2001–2003)	present	A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2008. The most recent assessment (2019) is shown below.

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	happe­ning now	whole of popul­ation/area (>90%)	slow decline (1–10% over 3 gener­ations)	high
Agricultural expansion and intensification	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Some of area covered (10–49%)	A compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	The conservation measures needed for the site are being compre­hensively and effectively implemented	medium

Year	Protected Area	Designation (management category)	% coverage of IBA
2015	Patagonia	Parque Nacional (II)	5

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Club Observadores de Aves (COAS) Patagonia Sur - Río Gallegos	2007

For more information on BirdLife's work with Local Conservation Groups, please visit Spotlight on local empowerment.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Meseta Lago Buenos Aires (Argentina). Downloaded from https://datazone.birdlife.org/site/factsheet/meseta-lago-buenos-aires-iba-argentina on 23/12/2024.