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The Western Cape’s Spatial Biodiversity Plan Biodiversity Planning Forum June 2016 Genevieve Pence & Jason Pretorius
The Western Cape’s Spatial Biodiversity Plan
Biodiversity Planning ForumJune 2016
Genevieve Pence & Jason Pretorius
2016 Spatial Biodiversity Plan
• 1st province-wide analysis
• Updated ecosystem mapping
• 2013-14 Land cover
• Winning characteristics
– ‘Coarse-filter / fine-filter approach’
– Ecological infrastructure underpins CBA design
– Iterative selection to fully meet targets
• Mainstreaming path ______
• Land cover & remnants
• Planning units & status
• Features
– Biodiversity Pattern
– Ecological Infrastructure & Persistence
• Targets
• Analysis
• Data package
• Mainstreaming & Updating
Nuts and Bolts
Land cover Remnant update• 2013/14 GTI (W. Cape) Product
‒ Multi-season, 30m, more classes• Resampled (10m) & built environment revision
Planning Units CBAs
20 ha hexagons & PA boundaries
n = 560 890
Initial Status = Earmarked
Selection Frequency
• Ecosystems
– Vegetation Types
– Coastal Habitat Types
– Wetland Types
– River Types
– Estuaries
– Indigenous Forest Types
Biodiversity Pattern Features
• Species
– Threatened Plants
– Threatened Butterflies
– Threatened Reptiles
– Amphibian guild
– Fish
– BMP-S species
• Cape Mountain Zebra
• Bontebok
• Geometric Tortoise
• African Penguin
Biodiversity Pattern Features
8,600 endemics
Ecological Infrastructure & Persistence Features
Wetland
FEPA River
Riparian Functional Area
Estuarine Functional Area
FEPA Wetland Cluster
Climate Adaptation
Corridor
Foredune
Coastal Corridor
FEPA Subcatchment& Fish Support Area
Upland-lowland interface
Strategic Water Source Areas
High Groundwater Recharge Areas
Targets• Representation
– National targets & Pfab et al.
– 20% of original extent; 11 localities; 10 000 indv
• Persistence– 60% of original extent
– Rural extent
• Initial PU status
• Costs
• Calibration
• Marxan via QGIS & CLUZ
– ArcView 3.2 & CLUZ
Analysis
• Updated Ecosystem Threat Status & Protection Level information
• Best available science from provincial authority
• Map Categories– Basic (primary descriptor)
– Supplementary (additional descriptors)
• Use of overlay layers– Entire extent of features
– Listing Notice 3 triggers
• Handbook
Data package(s)
2%
26%
27%
17%
28%
No Natural Remaining
• All feedback will be reviewed and summarised annually.
• Issues related to land cover or habitat condition will be streamed separately, and either:– Investigated remotely (desktop assessment);
– Ground truthed; or
– Inform future data acquisition and/or classification.
• If new (reliable) land cover or habitat condition data is available, the status of CBAs (and ecosystems) will be reported on every second year.
• New CBAs will be determined every 4-5 years (assuming the necessary data are available).
How often will CBAs be updated?
