Data Zone
The site was identified as internationally important for bird conservation in 2017 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 |
|---|---|---|---|---|
| White-winged Petrel Pterodroma leucoptera | VU | breeding (2009–2016) | 543–623 birds | A1, A4 |
| Wedge-tailed Shearwater Ardenna pacifica | LC | breeding (2009) | 55,434 pairs | A4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2017. The most recent assessment (2020) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2020 | not assessed | high | high |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | medium | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Natural system modifications | likely in long term (>4 years) | most of population/area (50–90%) | rapid decline (>30% over 3 generations) | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | high |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1954 | John Gould | Nature Reserve (IV) | 59 |
| 2005 | Port Stephens - Great Lakes | Marine Park (II) | 42 |
| 2005 | Port Stephens - Great Lakes | Marine Park (II) | 13 |
| 2010 | Boondelbah | Nature Reserve (Ia) | 20 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | 50 | Rainforest & vine thickets |
| Shrubland | 40 | Other shrublands |
| Marine Coastal/Supratidal | 10 |
| Land use | % of IBA |
|---|---|
| nature conservation and research | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Cabbage Tree and Boondelbah Islands (Australia). Downloaded from
https://datazone.birdlife.org/site/factsheet/cabbage-tree-and-boondelbah-islands-iba-australia on 27/12/2024.