Mangere (28064)
New Zealand, Australasia
Site overview
KBA status: confirmed
Global KBA criteria: A1a, A1b, B1, B2, D1a
Year of last assessment: 2014
National site name: Mangere
Central coordinates: Latitude: -44.2400, Longitude: -176.2810
System: marine, terrestrial
Elevation (m): 0 to 286
Area of KBA (km2): 1.52501
Protected area coverage (%): 71.58
KBA classification: Global
Legacy site: Yes
Site details
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: IBA Trigger species: Chatham Island Shag, Pitt Island Shag, Fairy Prion, Grey-backed Storm Petrel, Chatham Oystercatcher, Chatham Snipe, Shore Plover, Chatham (Forbes') Parakeet, Red-fronted Parakeet (Chatham Island Red-crowned Parakeet), Black Robin Besides the trigger species the following species are confirmed or likely to be breeding: Little Penguin, Black-winged petrel, Sooty Shearwater, Subantarctic Little Shearwater, Broad-billed Prion, White-faced Storm Petrel, Common Diving Petrel, Brown Skua, Southern Black-backed Gull, Red-billed Gull, White-fronted Tern, White-faced Heron, Mallard, Australasian Harrier, Welcome Swallow, NZ Pipit, Shining Cuckoo, Silvereye, Chatham Island Warbler, Chat-ham Island Tomtit, Chatham Island Fantail, Chatham Island Tui, Skylark, Hedge Sparrow, Blackbird, Song Thrush, Chaffinch, Redpoll, Starling. Other species recorded: Leach’s Storm Petrel (Rabbit Island)
Other site values: Access to Mangere Island is strictly limited. Other islands including Little Mangere Tapuaenuku are privately owned and access is limited. Also, all islands are steep to extremely steep and difficult to access.
Habitats
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Marine Intertidal | 25 | |
| Shrubland | 25 | |
| Forest | 25 | |
| Marine Coastal/Supratidal | 25 |
Threats
Summary of threats to biodiversity at KBA: The islands are pest and disease-free . Access to Mangere Island is strictly limited. Other islands including Little Mangere Tapuaenuku are privately owned and access is limited. Also, all islands are steep to extremely steep and difficult to access. However, reinvasion is a constant threat, particularly from any vessels anchored close to the islands. Human disturbance – No Predation by alien species – No Habitat loss or degradation – No Contamination – No Natural disaster – No Parasite or pathogen - No Other – No
Additional information
References: Aikman, H.; Miskelly, C. 2004. Birds of the Chatham Islands. Wellington, Department of Conservation. Bell M., Bell, D. 2000. Census of three shag species in the Chatham Islands. Notornis 47: 148-153 Bell, M. 2012. Shag interactions with commercial rock lobster pot and trap fishing methods in the Chatham Islands. Wildlife Management International for DOC. Contract 4342 (INT2011-02 - Shag interactions with commercial pot and trap fishing methods in New Zealand). 24pp. Bester, A.J., Chateris, M. 2005. The second census of Chatham Island shag and Pitt Island shag - are numbers declining. Notornis 52: 6-10 Davis, A. 1994. Status, distribution and population trends of the New Zealand shore plover Thinornis novaeseelandiae. Notornis (Supplement) 41: 179-194 Davis, A. 1994. Breeding biology of the New Zealand shore plover Thinornis novaeseelandiae. Notornis (Supplement) 41: 195-208 Debski, I., Bell, M., Palmer, D. 2012. Chatham Island and Pitt Island shag census 2011. Contract MCSPO2010-02, Department of Conservation, Wellington. Imber, M.J. 1994. Seabirds recorded at the Chatham Islands, 1960 to May 1993. Notornis 41: 97-108 Young, E.C. 1994. Is cooperative breeding in brown skua (Catharacta skua lonnbergi) on the Chatham Islands habitat-forced? Notornis (Supplement) 41: 143-163