Data Zone
The site was identified as internationally important for bird conservation in 1998 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 |
|---|---|---|---|---|
| Cape Shoveler Spatula smithii | LC | non-breeding (-) | 337–506 birds | A4i |
| Great Crested Grebe Podiceps cristatus | LC | non-breeding (-) | 54 birds | A4i |
| African Oystercatcher Haematopus moquini | LC | non-breeding (-) | present | A1 |
| Pied Avocet Recurvirostra avosetta | LC | non-breeding (-) | 263–669 birds | A4i |
| Hartlaub's Gull Larus hartlaubii | LC | breeding (-) | 150–375 pairs | A4i |
| Hartlaub's Gull Larus hartlaubii | LC | non-breeding (-) | 543–1,102 birds | A4i |
| Kelp Gull Larus dominicanus | LC | non-breeding (-) | 665 birds | A4i |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 1998. The most recent assessment (2013) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2013 | very poor | high | high |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | habitat | medium | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Shrubland | poor (40–69%) | poor (40–69%) | very poor |
| Marine Coastal/Supratidal | moderate (70–90%) | moderate (70–90%) | poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Climate change and severe weather | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Residential and commercial development | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Transportation and service corridors | 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 |
| Agricultural expansion and intensification | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Pollution | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Energy production and mining | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Biological resource use | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Natural system modifications | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| 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 | The conservation measures needed for the site are being comprehensively and effectively implemented | high |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 2000 | Cape West Coast Biosphere Reserve | UNESCO-MAB Biosphere Reserve (UA) | 97 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) | |
| Shrubland | major (>10) | Shrubland - Cape (fynbos) |
| Land use | % of IBA |
|---|---|
| nature conservation and research | 94 |
| tourism/recreation | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Rietvlei Wetland: Table Bay Nature Reserve (South Africa). Downloaded from
https://datazone.birdlife.org/site/factsheet/rietvlei-wetland:-table-bay-nature-reserve-iba-south-africa on 23/12/2024.