• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important in 2014 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
Black-billed Gull Larus bulleri	NT	non-breeding	-	abundant	A1
Black-fronted Tern Chlidonias albostriatus	EN	non-breeding	2008-2014	15-650 individuals	A1, A4i

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2014) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2014. The most recent assessment (2014) 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	some of area/population (10-49%)	moderate to rapid deterioration	high
Natural system modifications	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Human intrusions and disturbance	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1993	Wairau Diversion Mouth	Stewardship Area	3
1993	Wairau Riverbed	Stewardship Area	<1
1994	Wairau Lagoons Wetland Management	Government Purpose Reserve	66

Habitat1	Habitat detail	% of IBA
Introduced vegetation		major (>10)
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)
Wetlands (inland)	Rivers & streams	minor (<10)

1. IUCN Habitat classification.

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Wairau Lagoons (New Zealand). Downloaded from https://datazone.birdlife.org/site/factsheet/wairau-lagoons-iba-new-zealand on 22/11/2024.