Data Zone
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 |
|---|---|---|---|---|
| Wrybill Anarhynchus frontalis | VU | breeding (1967–2007) | 25–41 birds | A1 |
| Black-billed Gull Larus bulleri | NT | breeding (1967–2007) | 129–352 pairs | A1 |
| Black-fronted Tern Chlidonias albostriatus | EN | breeding (1967–2010) | 34–73 pairs | A1 |
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 |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Natural system modifications | 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 |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1958 | Routeburn | Scenic Reserve (III) | <1 |
| 1970 | Diamond Lake & Lake Reid | Government Purpose Reserve (-) | 4 |
| 1977 | Hillocks Kame Field | Conservation Covenant (IV) | 1 |
| 1977 | Routeburn Field | Conservation Covenant (IV) | <1 |
| 1978 | Glenorchy Lagoon | Government Purpose Reserve (-) | 1 |
| 1987 | Pt Run 701 | Stewardship Area (III) | 4 |
| 1987 | Rees River | Stewardship Area (III) | 1 |
| 1987 | Kinloch Foreshore Reserve | Stewardship Area (III) | <1 |
| 1987 | Rees Valley Road | Stewardship Area (III) | <1 |
| 1987 | Glenorchy Foreshore | Stewardship Area (III) | <1 |
| 1987 | Access to Dart River | Stewardship Area (III) | <1 |
| 1987 | Kinloch Wetlands | Stewardship Area (III) | <1 |
| 1987 | Dart Beach | Stewardship Area (III) | 3 |
| 1987 | Woodbine Island | Stewardship Area (III) | 1 |
| 1987 | Dart Bridge | Stewardship Area (III) | 1 |
| 1990 | Te Wahipounamu – South West New Zealand | World Heritage Site (natural or mixed) (UA) | 15 |
| 1993 | Dart Island | Scenic Reserve (III) | <1 |
| 1998 | Springfield Stream & Wetland | Conservation Covenant (IV) | <1 |
| 1998 | Red Beech Forest | Conservation Covenant (IV) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | major (>10) | |
| Introduced vegetation | major (>10) | |
| Shrubland | major (>10) | |
| Wetlands (inland) | major (>10) | |
| Forest | minor (<10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Dart Rees Rivers (New Zealand). Downloaded from
https://datazone.birdlife.org/site/factsheet/dart-rees-rivers-iba-new-zealand on 23/12/2024.