Lake Grassmere (New Zealand) - BirdLife IBA factsheet

NZ048

Lake Grassmere

Current view: Data table and detailed info

IBA Justification

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	2003-2015	35-3,600 individuals	A1
Black-fronted Tern Chlidonias albostriatus	EN	non-breeding	2003-2008	280-1,100 individuals	A1, A4i

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

IBA Conservation

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.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2014	not assessed	high	not assessed
Whole site assessed?	State assessed by	Accuracy of information
no	unset	-

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
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%)	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

IBA Protection

Year	Protected Area	Designation	% overlap with IBA
1957	Lake Grassmere Wildlife Refuge	Wildlife Refuge	93
1993	Grassmere Beach	Stewardship Area	<1

Habitats

Habitat¹	Habitat detail	% of IBA
Artificial/Aquatic & Marine		major (>10)
Introduced vegetation		major (>10)
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)

1. IUCN Habitat classification.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Grassmere (New Zealand). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-grassmere-iba-new-zealand on 22/11/2024.