Introduction

This is the first National Coastal and Marine Spatial Biodiversity Plan for the coast and ocean around the South African mainland, comprising the national Coastal and Marine CBA Map v1.0 and accompanying sea-use guidelines. It is being developed using the software, Marxan, to run a systematic biodiversity plan to identify the biodiversity priority areas. It is therefore based on the principles of representation, persistence and target setting, and characteristics of: complementarily and spatial efficiency; conflict avoidance; connectivity; data-driven; and explicit and repeatable, as required by the Technical Guidelines for CBA Maps. The overall goal is to safeguard a sufficient, representative sample of coastal and marine biodiversity that can persist into the future, in support of sustainable economic development. This work will continue through other initiatives, and iterative improvements of the National Coastal and Marine Spatial Biodiversity Plan are needed over the next few years.

Given the need for early access to the National Coastal and Marine Map of Critical Biodiversity Areas and Ecological Support Areas (CBA Map), we are releasing it ahead of the full launch of the National Coastal and Marine Spatial Biodiversity Plan Version 1.0. The spatial data of the map are available for download from the sidebar, together with an interim release noteThe purpose of this interim release note is to provide a very brief overview of the new data and refinements to the methodology that have been included in this version of the CBA Map, the details of which will follow in the technical report launched later this year. The full launch will likely happen sometime in April 2021. 

In the mean time, the National Coastal and Marine Spatial Biodiversity Plan Version 1 (Beta 2) will remain available for download from the side bar. This should be read together with the interim release note. We also recommend looking at the other additional resources related to this work.

 

National Coastal and Marine CBA Map Version 1.0

In the national Coastal and Marine CBA Map v1.0, Critical Biodiversity Areas (CBAs) and Ecological Support Areas (ESAs) were identified using maps of ecosystem types (NBA 2018 map of marine ecosystem types, and pelagic ecosystem types); species data; unique or special habitats or features; culturally significant areas; ecological processes; ecological infrastructure; climate-change adaptation; existing priorities and protected areas; and several design elements that include edge-matching priorities (land-sea and transboundary); ecological condition; climate change velocity; marine monitoring areas; and known, fragile areas. In the next iterations of the CBA Map, the intention is to include an even more comprehensive suite of biodiversity input data. The cost layer used in the analysis comprises four components, two of which specifically aim to reduce conflict with 19 different sectors. The other two components are cumulative impact to marine ecosystem types, and area of the planning units. Marxan was used to do the spatial prioritisation.

 

National Coastal and Marine CBA Map v1.0

Sea-use Guidelines

The sea-use guidelines were developed through a series of workshops, first discussed at the Biodiversity Planning Forum 2018. They build on the proposed management recommendations accompanying the proposed EBSA zoning that have been discussed at two national workshops and are still under discussion. The evaluation of activity compatibility was based on the ecosystem-pressure matrix from the NBA 2018 marine assessment.

 

List of all sea-use activities, grouped by their Marine Spatial Planning (MSP) zones, and scored according to their compatibility with the management objective of Critical Biodiversity Areas (CBAs) and Ecological Support Areas (ESAs). Activity compatibility is given as Y = yes, compatible, C = conditional or N = not compatible. (to be updated with the latest version)