Ecosystem Protection Level

Coastal zone

Linda R. Harris1 , Natasha Besseling2 , Kerry J. Sink2, 1 , Andrew L. Skowno2, 3 , Lara Van Niekerk4, 1

1. Nelson Mandela University

2. South African National Biodiversity Institute

3. University of Cape Town

4. Council for Scientific and Industrial Research

Published

November 11, 2025


36%
of 190 ecosystem types
Well Protected
27%
of 190 ecosystem types
Not protected
7%
of the coastal extent
Well Protected
25%
of the coastal extent
Not protected

Introduction

Ecosystem protection level (EPL) is one of the headline indicators of the National Biodiversity Assessment. This indicator measures the degree to which ecosystem types are represented in South Africa’s protected area network, and has been used as in national reporting since 2005.

After comparing the extent extent of each ecosystem type under protection relative to its predefined biodiversity target (ranging 16-32%), with heuristics regarding the ecological condition within protected areas, ecosystem types are assigned to one of four categories:

  • Well Protected (WP): the extent target for the ecosystem type is met or exceeded within the protected area network

  • Moderately Protected (MP): 50 - 99% of the extent target for the ecosystem type is met within the protected area network

  • Poorly Protected (PP): 5 - 49% of the extent target for the ecosystem type is met within the protected area network

  • Not Protected (NP): <5% of the extent target for the ecosystem type is met within the protected area network

For NBA 2025, the EPL indicator was calculated across all realms, and the results are summarised here for the 190 coastal ecosystem types that were assessed. For more details on EPL, see the general introduction to this headline indicator.

Coastal Ecosystem Protection Level

Proportionately, the coast is slightly more protected than the rest of the land and sea (Figure 2, Table 1). This is positive given the myriad of benefits provided by coastal ecosystems and their disproportionately impacted and threatened status.

Although 86% of coastal ecosystem types have some level of protection (163 of 190 types), only 19% are Well Protected, which accounts for 7% of the coastal extent (Figure 2, Table 1).

There is good progress in protecting coastal ecosystem types, but the national protected area network does need to be strengthened to afford protection to most of the coastal zone that is currently Poorly Protected or Not Protected (54% of types and 74% of extent), especially for coastal terrestrial and estuarine ecosystem types.

Ideally, coastal ecosystem types should have cross-realm protection in contiguous land-based and marine protected areas. Good examples of cross-realm protection are: Garden Route National Park and Tsitsikamma Marine Protected Area (MPA); iSimangaliso Wetland Park and MPA; De Hoop Nature Reserve and MPA; Addo Elephant National Park and MPA; and Namaqua National Park and MPA.

Figure 1. Coastal ecosystem protection level, 2025.
Figure 2. Ecosystem protection level of coastal ecosystem types by (A) number of types and (B) extent of types

Coastal terrestrial ecosystem types are most Well Protected (22% of types, and 18% of extent); coastal marine ecosystem types have the largest percentage of ecosystem types in the top two categories, Well Protected and Moderately Protected (55% of types); and estuarine ecosystem types have the highest extent of protection across Well, Moderately and Poorly Protected (91% of extent) (Figure 2, Table 1).

In terms of Not Protected ecosystem types, the highest proportion of types is in the (coastal) terrestrial realm (20%), and the highest proportion of extent is in the (coastal) marine realm (31%) (Figure 2, Table 1).

Table 1. Ecosystem protection level of coastal ecosystem types: number of types per protection category, given per across-shore zone (inland to offshore). WP = Well Protected; MP = Moderately Protected; PP = Poorly Protected; NP = Not Protected.
Realm Sub-realm WP MP PP NP Total
Coastal Terrestrial Total 18 13 35 17 83
Coastal Terrestrial Semi-coastal vegetation 8 5 16 7 36
Coastal Terrestrial Coastal vegetation 10 8 19 10 47
Estuarine Total 2 8 9 3 22
Coastal Marine Total 16 31 31 7 85
Coastal Marine Shore 9 13 13 2 37
Coastal Marine Inner shelf and river influenced 7 18 18 5 48
Coastal (overall) Total 36 52 75 27 190
Non-coastal Total 121 71 153 115 460
Table 2. Ecosystem protection level of coastal ecosystem types: proportion of types per protection category, given per across-shore zone (inland to offshore). WP = Well Protected; MP = Moderately Protected; PP = Poorly Protected; NP = Not Protected.
Realm Sub-realm WP MP PP NP Total
Coastal Terrestrial Total 21.7 15.7 42.2 20.5 100
Coastal Terrestrial Semi-coastal vegetation 22.2 13.9 44.4 19.4 100
Coastal Terrestrial Coastal vegetation 21.3 17.0 40.4 21.3 100
Estuarine Total 9.1 36.4 40.9 13.6 100
Coastal Marine Total 18.8 36.5 36.5 8.2 100
Coastal Marine Shore 24.3 35.1 35.1 5.4 100
Coastal Marine Inner shelf and river influenced 14.6 37.5 37.5 10.4 100
Coastal (overall) Total 18.9 27.4 39.5 14.2 100
Non-coastal Total 26.3 15.4 33.3 25.0 100
Table 3. Ecosystem protection level of coastal ecosystem types: proportion of extent per protection category, given per across-shore zone (inland to offshore). WP = Well Protected; MP = Moderately Protected; PP = Poorly Protected; NP = Not Protected.
Realm Sub-realm WP MP PP NP Total
Coastal Terrestrial Total 17.9 15.7 51.7 14.7 100
Coastal Terrestrial Semi-coastal vegetation 31.8 19.5 41.0 7.6 100
Coastal Terrestrial Coastal vegetation 9.1 13.3 58.5 19.2 100
Estuarine Total 0.1 59.0 31.6 9.3 100
Coastal Marine Total 1.1 20.5 47.8 30.6 100
Coastal Marine Shore 18.9 40.7 40.2 0.2 100
Coastal Marine Inner shelf and river influenced 0.7 20.1 48.0 31.2 100
Coastal (overall) Total 6.6 19.9 48.7 24.8 100
Non-coastal Total 4.8 7.7 48.7 38.9 100

Because the targets and assessment methodologies have changed in the realm assessments since the NBA 2018, the results are not comparable between the two assessments as a time series. However, the latest results do show that the South African coastal zone is less protected than was previously reported.

Table 4. Protection level of coastal ecosystem types in South Africa. EPL = Ecosystem Protection Level. WP = Well Protected. MP = Moderately Protected. PP = Poorly Protected. NP = Not Protected.
Realm Subrealm Ecosystem Type Protection Level
Terrestrial Coastal vegetation Cape Seashore Vegetation Well Protected
Terrestrial Coastal vegetation Goukamma Dune Thicket Well Protected
Terrestrial Coastal vegetation Langebaan Dune Strandveld Well Protected
Terrestrial Coastal vegetation Mangrove Forest Well Protected
Terrestrial Coastal vegetation Northern Coastal Forest Well Protected
Terrestrial Coastal vegetation Potberg Sandstone Fynbos Well Protected
Terrestrial Coastal vegetation Southern Coastal Forest Well Protected
Terrestrial Coastal vegetation Subtropical Dune Thicket Well Protected
Terrestrial Coastal vegetation Subtropical Seashore Vegetation Well Protected
Terrestrial Coastal vegetation Swamp Forest Well Protected
Terrestrial Semi-coastal vegetation Goukamma Strandveld Well Protected
Terrestrial Semi-coastal vegetation Kogelberg Sandstone Fynbos Well Protected
Terrestrial Semi-coastal vegetation Namib Lichen Fields Well Protected
Terrestrial Semi-coastal vegetation Peninsula Sandstone Fynbos Well Protected
Terrestrial Semi-coastal vegetation Peninsula Shale Fynbos Well Protected
Terrestrial Semi-coastal vegetation Southern Afrotemperate Forest Well Protected
Terrestrial Semi-coastal vegetation Tsitsikamma Sandstone Fynbos Well Protected
Terrestrial Semi-coastal vegetation Umtiza Forest Thicket Well Protected
Terrestrial Coastal vegetation Cape Flats Dune Strandveld Moderately Protected
Terrestrial Coastal vegetation Hangklip Sand Fynbos Moderately Protected
Terrestrial Coastal vegetation Kasouga Dune Thicket Moderately Protected
Terrestrial Coastal vegetation Maputaland Coastal Belt Moderately Protected
Terrestrial Coastal vegetation Namaqualand Coastal Duneveld Moderately Protected
Terrestrial Coastal vegetation Overberg Dune Strandveld Moderately Protected
Terrestrial Coastal vegetation Peninsula Granite Fynbos Moderately Protected
Terrestrial Coastal vegetation Saldanha Limestone Strandveld Moderately Protected
Terrestrial Semi-coastal vegetation Albany Mesic Thicket Moderately Protected
Terrestrial Semi-coastal vegetation Cape Winelands Shale Fynbos Moderately Protected
Terrestrial Semi-coastal vegetation De Hoop Limestone Fynbos Moderately Protected
Terrestrial Semi-coastal vegetation Maputaland Wooded Grassland Moderately Protected
Terrestrial Semi-coastal vegetation Southwestern Strandveld Moderately Protected
Terrestrial Coastal vegetation Agulhas Limestone Fynbos Poorly Protected
Terrestrial Coastal vegetation Agulhas Sand Fynbos Poorly Protected
Terrestrial Coastal vegetation Algoa Sandstone Fynbos Poorly Protected
Terrestrial Coastal vegetation Hamburg Dune Thicket Poorly Protected
Terrestrial Coastal vegetation Hartenbos Dune Thicket Poorly Protected
Terrestrial Coastal vegetation Lambert's Bay Strandveld Poorly Protected
Terrestrial Coastal vegetation Namaqualand Heuweltjie Strandveld Poorly Protected
Terrestrial Coastal vegetation Namaqualand Inland Duneveld Poorly Protected
Terrestrial Coastal vegetation Namaqualand Sand Fynbos Poorly Protected
Terrestrial Coastal vegetation Namaqualand Seashore Vegetation Poorly Protected
Terrestrial Coastal vegetation Namaqualand Strandveld Poorly Protected
Terrestrial Coastal vegetation Peninsula Shale Renosterveld Poorly Protected
Terrestrial Coastal vegetation Pondoland-Ugu Sandstone Coastal Sourveld Poorly Protected
Terrestrial Coastal vegetation Saldanha Flats Strandveld Poorly Protected
Terrestrial Coastal vegetation Saldanha Granite Strandveld Poorly Protected
Terrestrial Coastal vegetation Southern Cape Dune Fynbos Poorly Protected
Terrestrial Coastal vegetation St Francis Dune Thicket Poorly Protected
Terrestrial Coastal vegetation Transkei Coastal Belt Poorly Protected
Terrestrial Coastal vegetation Western Gariep Plains Desert Poorly Protected
Terrestrial Semi-coastal vegetation Albertinia Sand Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Atlantis Sand Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Eastern Coastal Shale Band Vegetation Poorly Protected
Terrestrial Semi-coastal vegetation Elands Forest Thicket Poorly Protected
Terrestrial Semi-coastal vegetation Elim Ferricrete Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Garden Route Shale Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Grassridge Bontveld Poorly Protected
Terrestrial Semi-coastal vegetation Grootbos Strandveld Poorly Protected
Terrestrial Semi-coastal vegetation Hopefield Sand Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Knysna Sand Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Lourensford Alluvium Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Overberg Sandstone Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation Potberg Ferricrete Fynbos Poorly Protected
Terrestrial Semi-coastal vegetation South Eastern Coastal Thornveld Poorly Protected
Terrestrial Semi-coastal vegetation Southeastern Strandveld Poorly Protected
Terrestrial Semi-coastal vegetation St Francis Strandveld Poorly Protected
Terrestrial Coastal vegetation Alexander Bay Coastal Duneveld Not Protected
Terrestrial Coastal vegetation Canca Limestone Fynbos Not Protected
Terrestrial Coastal vegetation Garden Route Granite Fynbos Not Protected
Terrestrial Coastal vegetation Groot Brak Dune Strandveld Not Protected
Terrestrial Coastal vegetation KwaZulu-Natal Coastal Belt Grassland Not Protected
Terrestrial Coastal vegetation Namib Seashore Vegetation Not Protected
Terrestrial Coastal vegetation Northern Richtersveld Yellow Duneveld Not Protected
Terrestrial Coastal vegetation Richtersveld Coastal Duneveld Not Protected
Terrestrial Coastal vegetation Richtersveld Sandy Coastal Scorpionstailveld Not Protected
Terrestrial Coastal vegetation Southern Richtersveld Yellow Duneveld Not Protected
Terrestrial Semi-coastal vegetation Bethelsdorp Bontveld Not Protected
Terrestrial Semi-coastal vegetation Cape Flats Sand Fynbos Not Protected
Terrestrial Semi-coastal vegetation Gouritz Valley Thicket Not Protected
Terrestrial Semi-coastal vegetation Humansdorp Shale Renosterveld Not Protected
Terrestrial Semi-coastal vegetation Mossel Bay Shale Renosterveld Not Protected
Terrestrial Semi-coastal vegetation Motherwell Karroid Thicket Not Protected
Terrestrial Semi-coastal vegetation Sardinia Forest Thicket Not Protected
Estuarine Estuaries Cool Temperate Small Fluvially Dominated Well Protected
Estuarine Estuaries Warm Temperate Small Fluvially Dominated Well Protected
Estuarine Estuaries Cool Temperate Estuarine Lagoon Moderately Protected
Estuarine Estuaries Cool Temperate Small Temporarily Closed Moderately Protected
Estuarine Estuaries Subtropical Estuarine Lake Moderately Protected
Estuarine Estuaries Subtropical Small Temporarily Closed Moderately Protected
Estuarine Estuaries Tropical Estuarine Lake Moderately Protected
Estuarine Estuaries Warm Temperate Estuarine Bay Moderately Protected
Estuarine Estuaries Warm Temperate Estuarine Lake Moderately Protected
Estuarine Estuaries Warm Temperate Small Temporarily Closed Moderately Protected
Estuarine Estuaries Cool Temperate Arid Predominantly Closed Poorly Protected
Estuarine Estuaries Cool Temperate Estuarine Lake Poorly Protected
Estuarine Estuaries Cool Temperate Large Fluvially Dominated Poorly Protected
Estuarine Estuaries Cool Temperate Large Temporarily Closed Poorly Protected
Estuarine Estuaries Subtropical Large Fluvially Dominated Poorly Protected
Estuarine Estuaries Subtropical Large Temporarily Closed Poorly Protected
Estuarine Estuaries Subtropical Predominantly Open Poorly Protected
Estuarine Estuaries Warm Temperate Large Temporarily Closed Poorly Protected
Estuarine Estuaries Warm Temperate Predominantly Open Poorly Protected
Estuarine Estuaries Cool Temperate Predominantly Open Not Protected
Estuarine Estuaries Subtropical Estuarine Bay Not Protected
Estuarine Estuaries Warm Temperate Large Fluvially Dominated Not Protected
Marine Inner shelf and river influenced Agulhas Inner Shelf Reef Well Protected
Marine Inner shelf and river influenced Delagoa Sandy Inner Shelf Well Protected
Marine Inner shelf and river influenced Kosi Coral Community Well Protected
Marine Inner shelf and river influenced Leadsman Coral Community Well Protected
Marine Inner shelf and river influenced Namaqua Mid Shelf Fossils Well Protected
Marine Inner shelf and river influenced Sodwana Coral Community Well Protected
Marine Inner shelf and river influenced St Lucia Sandy Inner Shelf Well Protected
Marine Shore Agulhas Island Well Protected
Marine Shore Delagoa Mixed Shore Well Protected
Marine Shore Delagoa Very Exposed Rocky Shore Well Protected
Marine Shore Natal Boulder Shore Well Protected
Marine Shore Natal Delagoa Dissipative Intermediate Sandy Shore Well Protected
Marine Shore Natal Delagoa Intermediate Sandy Shore Well Protected
Marine Shore Natal Delagoa Reflective Sandy Shore Well Protected
Marine Shore Natal Exposed Rocky Shore Well Protected
Marine Shore Southern Benguela Dissipative Sandy Shore Well Protected
Marine Inner shelf and river influenced Agulhas Inner Shelf Mosaic Moderately Protected
Marine Inner shelf and river influenced Agulhas Sandy Inner Shelf Moderately Protected
Marine Inner shelf and river influenced Aliwal Shoal Reef Complex Moderately Protected
Marine Inner shelf and river influenced Durnford Mid Shelf Reef Complex Moderately Protected
Marine Inner shelf and river influenced Eastern Agulhas Bay Moderately Protected
Marine Inner shelf and river influenced KZN Bight Muddy Inner Shelf Moderately Protected
Marine Inner shelf and river influenced KZN Bight Muddy Shelf Edge Moderately Protected
Marine Inner shelf and river influenced Kei Fluvial Fan Moderately Protected
Marine Inner shelf and river influenced Kei Reef Mosaic Moderately Protected
Marine Inner shelf and river influenced Namaqua Sandy Inner Shelf Moderately Protected
Marine Inner shelf and river influenced Port St Johns Inner Shelf Mosaic Moderately Protected
Marine Inner shelf and river influenced Port St Johns Muddy Mid Shelf Moderately Protected
Marine Inner shelf and river influenced Port St Johns Muddy Shelf Edge Moderately Protected
Marine Inner shelf and river influenced St Lucia Sandy Mid Shelf Moderately Protected
Marine Inner shelf and river influenced Wild Coast Inner Shelf Mosaic Moderately Protected
Marine Inner shelf and river influenced uThukela Mid Shelf Mosaic Moderately Protected
Marine Inner shelf and river influenced uThukela Mid Shelf Mud Coarse Sediment Mosaic Moderately Protected
Marine Inner shelf and river influenced uThukela Outer Shelf Muddy Reef Mosaic Moderately Protected
Marine Shore Agulhas Boulder Shore Moderately Protected
Marine Shore Agulhas Dissipative Intermediate Sandy Shore Moderately Protected
Marine Shore Agulhas Dissipative Sandy Shore Moderately Protected
Marine Shore Agulhas Exposed Rocky Shore Moderately Protected
Marine Shore Agulhas Intermediate Sandy Shore Moderately Protected
Marine Shore Agulhas Very Exposed Stromatolite Rocky Shore Moderately Protected
Marine Shore Cape Boulder Shore Moderately Protected
Marine Shore Cape Exposed Rocky Shore Moderately Protected
Marine Shore Cape Island Moderately Protected
Marine Shore Cape Very Exposed Rocky Shore Moderately Protected
Marine Shore Natal Mixed Shore Moderately Protected
Marine Shore Natal Very Exposed Rocky Shore Moderately Protected
Marine Shore Southern Benguela Dissipative Intermediate Sandy Shore Moderately Protected
Marine Inner shelf and river influenced Agulhas Kelp Forest Poorly Protected
Marine Inner shelf and river influenced Agulhas Muddy Mid Shelf Poorly Protected
Marine Inner shelf and river influenced Cape Bay Poorly Protected
Marine Inner shelf and river influenced Cape Kelp Forest Poorly Protected
Marine Inner shelf and river influenced Cape Rocky Inner Shelf Poorly Protected
Marine Inner shelf and river influenced Cape Sandy Inner Shelf Poorly Protected
Marine Inner shelf and river influenced Durnford Inner Shelf Reef Complex Poorly Protected
Marine Inner shelf and river influenced False and Walker Bay Poorly Protected
Marine Inner shelf and river influenced KZN Bight Deep Shelf Edge Poorly Protected
Marine Inner shelf and river influenced KZN Bight Mid Shelf Mosaic Poorly Protected
Marine Inner shelf and river influenced KZN Bight Outer Shelf Mosaic Poorly Protected
Marine Inner shelf and river influenced KZN Bight Sandy Inner Shelf Poorly Protected
Marine Inner shelf and river influenced Namaqua Kelp Forest Poorly Protected
Marine Inner shelf and river influenced Namaqua Muddy Mid Shelf Mosaic Poorly Protected
Marine Inner shelf and river influenced Namaqua Sandy Mid Shelf Poorly Protected
Marine Inner shelf and river influenced Southern KZN Inner Shelf Mosaic Poorly Protected
Marine Inner shelf and river influenced Trafalgar Reef Complex Poorly Protected
Marine Inner shelf and river influenced Western Agulhas Bay Poorly Protected
Marine Shore Agulhas Exposed Stromatolite Rocky Shore Poorly Protected
Marine Shore Agulhas Mixed Shore Poorly Protected
Marine Shore Agulhas Reflective Sandy Shore Poorly Protected
Marine Shore Agulhas Sheltered Rocky Shore Poorly Protected
Marine Shore Agulhas Stromatolite Mixed Shore Poorly Protected
Marine Shore Agulhas Very Exposed Rocky Shore Poorly Protected
Marine Shore Cape Mixed Shore Poorly Protected
Marine Shore Namaqua Exposed Rocky Shore Poorly Protected
Marine Shore Namaqua Mixed Shore Poorly Protected
Marine Shore Namaqua Sheltered Rocky Shore Poorly Protected
Marine Shore Namaqua Very Exposed Rocky Shore Poorly Protected
Marine Shore Southern Benguela Intermediate Sandy Shore Poorly Protected
Marine Shore Southern Benguela Reflective Sandy Shore Poorly Protected
Marine Inner shelf and river influenced KZN Bight Mid Shelf Reef Complex Not Protected
Marine Inner shelf and river influenced Namaqua Muddy Sands Not Protected
Marine Inner shelf and river influenced Orange Cone Inner Shelf Mud Reef Mosaic Not Protected
Marine Inner shelf and river influenced Orange Cone Muddy Mid Shelf Not Protected
Marine Inner shelf and river influenced St Helena Bay Not Protected
Marine Shore Cape Sheltered Rocky Shore Not Protected
Marine Shore Natal Delagoa Dissipative Sandy Shore Not Protected

Technical documentation

Github repositories

Coastal synthesis: https://github.com/lrharris/nba2025_coast/

Terrestrial EPL assessment: https://github.com/askowno/EPL_terr

Estuarine EPL assessment: https://github.com/askowno/EPL_est

Marine EPL assessment:

Data availability

The following datasets are available for download:

  1. Map of ecosystem protection level of South Africa’s coastal ecosystem types

References