NZ098
Bluff Harbour Awarua Bay


IBA Justification

The site was identified as internationally important for bird conservation 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 List Season (year/s of estimate) Size IBA criteria
Australasian Bittern Botaurus poiciloptilus VU resident (-) present A1
Stewart Island Shag Leucocarbo chalconotus VU breeding (1955–2013) 77–155 nests A1, A4i
Southern Red-breasted Plover Charadrius obscurus CR non-breeding (1997–2013) 77–82 birds A1, A4i
Black-billed Gull Larus bulleri NT non-breeding (2015) 36 birds A1
Black-fronted Tern Chlidonias albostriatus EN non-breeding (2015) 38 birds A1

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 popul­ation/area (10–49%) moderate decline (10–30% over 3 gener­ations) high
Pollution happe­ning now some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium
Human intrusions and disturbance happe­ning now some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium
Residential and commercial development happe­ning now some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium
Climate change and severe weather likely in short term (<4 years) some of popul­ation/area (10–49%) moderate decline (10–30% over 3 gener­ations) medium

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
1969 Joey's Island Scenic Reserve (III) <1
1972 Awarua Bay Wildlife Refuge Wildlife Refuge (IV) <1
1987 Tiwai Spit Stewardship Area (III) 21
1987 Seaward Moss Stewardship Area (III) 8
1992 Awarua Plains Stewardship Area (III) 4
1995 Awarua Bay Stewardship Area (III) <1
1999 Seaward Moss Conservation Covenant (IV) <1
2003 Tikore/Spencer Island Scenic Reserve (III) <1

Habitats

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


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Bluff Harbour Awarua Bay (New Zealand). Downloaded from https://datazone.birdlife.org/site/factsheet/bluff-harbour-awarua-bay-iba-new-zealand on 23/12/2024.