Data Zone
Year of most recent IBA criteria assessment: 1998
Populations of IBA trigger species| Species | Current IUCN Red List Category | Season | Year(s) of estimate | Population estimate | IBA Criteria Triggered |
|---|---|---|---|---|---|
| Ludwig's Bustard Neotis ludwigii | EN | resident | 1998 | present | A3 |
| Karoo Bustard Heterotetrax vigorsii | LC | resident | 1998 | present | A3 |
| Curlew Sandpiper Calidris ferruginea | NT | winter | - | 2,131-5,362 individuals | A4i |
| Karoo Lark Calendulauda albescens | LC | resident | 1998 | present | A3 |
| Namaqua Warbler Phragmacia substriata | LC | resident | 1998 | present | A3 |
| Layard's Warbler Curruca layardi | LC | resident | 1998 | present | A3 |
| Karoo Chat Emarginata schlegelii | LC | resident | 1998 | present | A3 |
| Sickle-winged Chat Emarginata sinuata | LC | resident | 1998 | present | A3 |
| Tractrac Chat Emarginata tractrac | LC | resident | 1998 | present | A3 |
| Black-headed Canary Serinus alario | LC | resident | 1998 | present | A3 |
Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.
For more information about the IBA assessment process and criteria please click here
| Most recent IBA monitoring assessment | |||
|---|---|---|---|
| Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
| 2014 | high | near favourable | low |
| Was the whole site covered? | Yes | State assessed by | Habitat |
| Accuracy of information | medium | ||
| Threats to the site (pressure) | |||||
|---|---|---|---|---|---|
| Threat Level 1 | Threat Level 2 | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | annual & perennial non-timber crops - agro-industry farming | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Agricultural expansion and intensification | livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Biological resource use | fishing & harvesting aquatic resources - unintentional effects: large scale | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Climate change and severe weather | drought | likely in long term (beyond 4 years) | some of area/population (10-49%) | slow but significant deterioration | medium |
| Energy production and mining | mining and quarrying | happening now | some of area/population (10-49%) | moderate to rapid deterioration | high |
| Energy production and mining | renewable energy | likely in short term (within 4 years) | small area/few individuals (<10%) | slow but significant deterioration | low |
| Human intrusions and disturbance | recreational activities | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Natural system modifications | dams & water management/use - large dams | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Pollution | agricultural & forestry effluents - herbicides and pesticides | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Pollution | domestic & urban waste water - sewage | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Residential and commercial development | commercial and industrial development | likely in short term (within 4 years) | some of area/population (10-49%) | slow but significant deterioration | medium |
| Residential and commercial development | housing and urban areas | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Residential and commercial development | tourism and recreation areas | happening now | some of area/population (10-49%) | moderate to rapid deterioration | high |
| Transportation and service corridors | roads and railroads | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Condition of habitat (state) | ||||||
|---|---|---|---|---|---|---|
| Habitat | Habitat Detail | Reference Area (ha) | Actual Area (ha) | % of habitat remaining | % of carrying capacity (overall) | Result |
| Wetlands (inland) | Estuarine waters | 0 | 0 | good (> 90%) | moderate (70-90%) | near favourable |
| Conservation actions taken at site (response) | |||
|---|---|---|---|
| Conservation Designation | Management Planning | Conservation Action | Result |
| Little/none of site covered (<10%) | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | Some limited conservation initiatives are in place | low |
| IUCN Habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Shrubland | Shrubland - Cape (fynbos) | - |
| Wetlands (inland) | Estuarine waters | - |
| Grassland | - |
| Land-use | Extent (% of site) |
|---|---|
| urban/industrial/transport | - |
| nature conservation and research | - |
Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Olifants river estuary. Downloaded from
http://www.birdlife.org on 25/06/2022.
