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 v1.1 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.

VERSION NOTE AND UPDATE (30 September 2021):
For several reasons it was decided not to release the technical report for Version 1.1. Instead, we will produce one final iteration before the end of the year, and at that time, release the full, updated report. There is a call for data that is curently open. Please contact us if you would like to contribute information to Version 1.2.

Nevertheless, Version 1.1 of the CBA Map is displayed below, and the data are available to download from the sidebar. The draft sea-use guidelines from Version 1.1 are also displayed below

In the mean time, the National Coastal and Marine Spatial Biodiversity Plan Version 1 (Beta 2) technical report will remain available for download from the side bar. This should be read together with the interim release note for Version 1.0, keeping in mind that there have been more updates in Version 1.1. We also recommend looking at the other additional resources related to this work.

 

National Coastal and Marine CBA Map Version 1.1

The National Coastal and Marine CBA Map is built using a series of input layers in two classes: biodiversity features; and design elements. In Version 1.1, the biodiversity features include ecosystem types (n=190 features); species (n=124 features); unique or special habitats or features (n = 17); culturally significant areas (n=5); ecological processes (n=16); ecological infrastructure (n=2); and existing priority areas (24). The design elements relate to climate-change adaptation (n=149); edge-matching and aligning priority areas across land-sea, shared international boundaries and with existing initiatives (n=13); ecological condition (n=332); under-protected (Not Protected and Poorly Protected) ecosystem types that are within EBSAs and outside of MPAs (n=36); and known, fragile areas (n=2). The list of features included in the spatial plan has been growing rapidly (Beta 1=541; Beta 2=615; Version 1=886; Version 1.1=911), and the number of datasets in each of these categories that are used in the spatial biodiversity plan is expected to increase in future versions. 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 v1.1 (June 2021)

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.

 

Sea-use guidelines Version 1.1 (June 2021, in review). 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.