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Location South Africa, Western Cape
Central coordinates 20o 0.00' East  34o 43.00' South
IBA criteria A1, A4i
Area 9,000 ha
Altitude 0 - 20m
Year of IBA assessment 2001

BirdLife South Africa



Summary This complex wetland system is located at the southern tip of the African continent 25 km south of Bredasdorp and consists of the Nuwejaarsrivier and its associated marshes, Soetendalsvlei and the Heuningnes River and its estuary, the latter is located in De Mond Nature Reserve.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Kelp Gull Larus dominicanus breeding  300-450 breeding pairs  A4i  Least Concern 
Kelp Gull Larus dominicanus winter  700-1,000 individuals  A4i  Least Concern 
Damara Tern Sternula balaenarum breeding  common  A1  Near Threatened 

IBA Monitoring

2013 high not assessed medium
unset
Medium - based upon reliable but incomplete / partially representative data

Agricultural expansion and intensification annual & perennial non-timber crops - shifting agriculture happening now some of area/population (10-49%) slow but significant deterioration medium
Agricultural expansion and intensification annual & perennial non-timber crops - small-holder farming happening now some of area/population (10-49%) slow but significant deterioration medium
Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - agro-industry grazing, ranching or farmin happening now some of area/population (10-49%) moderate to rapid deterioration high
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
Climate change and severe weather storms and floods happening now some of area/population (10-49%) no or imperceptible deterioration low
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
Invasive and other problematic species and genes invasive non-native/alien species/diseases - unspecified species happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - abstraction of surface water (unknown use) happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications other ecosystem modifications happening now some of area/population (10-49%) moderate to rapid deterioration high
Over-exploitation, persecution and control of species fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale happening now some of area/population (10-49%) slow but significant deterioration medium
Over-exploitation, persecution and control of species hunting & collecting terrestrial animals - persecution/control happening now some of area/population (10-49%) slow but significant deterioration medium
Over-exploitation, persecution and control of species hunting & collecting terrestrial animals - unintentional effects (species is not the target) happening now some of area/population (10-49%) no or imperceptible deterioration low
Pollution agricultural & forestry effluents - herbicides and pesticides happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution agricultural & forestry effluents - nutrient loads happening now some of area/population (10-49%) no or imperceptible deterioration low
Residential and commercial development commercial and industrial development likely in short term (within 4 years) small area/few individuals (<10%) no or imperceptible deterioration low
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%) slow but significant deterioration medium
Transportation and service corridors roads and railroads happening now some of area/population (10-49%) no or imperceptible deterioration low
Transportation and service corridors utility & service lines happening now some of area/population (10-49%) slow but significant deterioration medium

Shrubland   0 0 poor (40-69%) poor (40-69%) very unfavourable
Wetlands (inland) Intertidal mud, sand or salt flats  0 0 moderate (70-90%) moderate (70-90%) unfavourable

Haematopus moquini African Oystercatcher 25 25 individuals 100 favourable
Larus dominicanus Kelp Gull 1000 119 individuals 12 not assessed
Sternula balaenarum Damara Tern 30 10 individuals 34 very unfavourable

Most of site (50-90%) covered (including the most critical parts for important bird species)  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
De Mond Provincial Nature Reserve 927 protected area contained by site 1,580  
De Mond (Heuningnes estuary) Wetlands of International Importance (Ramsar) 918 protected area contained by site 918  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Intertidal mud, sand or salt flats; Salt marshes; Sand dunes and beaches - riverine  -
Artificial - terrestrial   12%
Shrubland   62%
Forest   25%

Land use

Land-use Extent (% of site)
nature conservation and research 17%
other -
nature conservation and research 100%

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Heuningnes river and estuary system. Downloaded from http://www.birdlife.org on 18/12/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife