NBA2018_Terrestrial Ecosystem Threat Status and Protection level remaining extent layer is associated with the NBA2018_Terrestrial Ecosystem Threat Status and Protection level. While the a NBA2018_Terrestrial Ecosystem Threat Status and Protection level remaining extent provides the data for Protection level and threat status for the historical (pre 1750AD) extent of the terrestrial ecosystems, this layer shows the protection level and threat status of the current remaining extent of terrestrial ecosystems. More detail can be found in NBA 2018 Technical Report Volume 1: Terrestrial Realm, http://hdl.handle.net/20.500.12143/6370

Latest update of the Sub-Antarctic Marine Ecosystem Map

NBA2018_Terrestrial Ecosystem Threat Status and Protection Level forms a key part of the National Biodiversity Assessment. More details can be found in NBA 2018 Technical Report Volume 1: Terrestrial Realm, http://hdl.handle.net/20.500.12143/6370

The nba2025_terr_rle_epl layer forms a key part of the National Biodiversity Assessment. The Red List of Ecosystems (commonly referred to as ecosystem threat status) and Ecosystem Protection Level are the two headline indicators used in South Africa to report on the state of its biodiversity. This dataset contains the historical / potential extent (circa 1750) of each of the 463 ecosystem types assessed. This means that patches of ecosystems lost to anthropogenic activities such as mining or croplands are part of the dataset. A separate dataset (nba2025_terr_rle_epl_remnants.shp) is also available and contains only the natural remaining remnants of each ecosystem type. This represents a revision of the “List of terrestrial ecosystems that threatened or in need of protection” published in the government gazette in December 2022. The revision is based on the best available data and uses the IUCN RLE risk assessment framework version 2.0 (IUCN,2024). Terrestrial ecosystems are categorised into one of four classes representing their risk of collapse; in descending order of risk: Critically Endangered, Endangered, Vulnerable, and Least Concern. The national vegetation map, 2024 version (Mucina and Rutherford 2006; Dayaram et al., 2025 in prep) provided the units of assessment for the RLE (Vegetation Unit / Type level) assessments. For further details, see the relevant ecosystem threat status and protection level pages.

The Coast threat status and Protection level layer includes the spatial delineation of coastal polygons from the terrestrial, estuarine and marine realms with their associated threat status and protection level as assessed in the NBA 2025. Further details on the process, partners and assessment can be found at https://nba.sanbi.org.za/

nba2025_terr _RLE_EPL_remnants layer forms part of the NBA2025 and is associated with the nba2025_terrl_RLE_EPL (large-scale industrial development) layer. The remnants layer shows the protection level and threat status of the current remaining extent of terrestrial ecosystems. It forms a key part of the National Biodiversity Assessment. For further details, see the relevant ecosystem threat status and protection level pages.

The estuarine threat status and Protection level layer includes the spatial delineation of estuarine polygons including names of ecosystem types, estuary names and ID's and some additional data useful for the threat status and protection level as assessed in the NBA 2025. Further details on the process, partners and assessment can be found at https://nba.sanbi.org.za/

The estuarine threat status and Protection level layer includes the spatial delineation of estuarine polygons including names of ecosystem types, estuary names and ID's and some additional data useful for the threat status and protection level as assessed in the NBA 2025. Further details on the process, partners and assessment can be found at https://nba.sanbi.org.za/