Christo Fabricius: Ecological Infrastructure and its implications for catchment management
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Transcript of Christo Fabricius: Ecological Infrastructure and its implications for catchment management
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Nature’s Infrastructure and its
implications for the management of
our Wilderness catchments
Christo Fabricius with Abigail Crisp, Onno Huyser, David Le Maitre, Samantha Mc Culloch,
Jeanne Nel, Patrick O’Farrell, Chantel Petersen, Dirk Roux, Klaudia Schachtscheider and Lindie Smith-Adao
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Actions Interventions
Ecosystem Services
Ecosystem Social-system Feedbacks
Social-Ecological Systems
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Nature’s Infrastructure
• The physical structures in the landscape that support ecosystem services: – Riparian and wetland vegetation
– Soils
– Floodplains
• Functions: – Buffering the system against
disturbances
– Regulating sediments and nutrients
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People and Ecological Infrastructure
• Nature’s infrastructure has a positive impact on human resilience by : – Protecting human lives
– Protecting engineered infrastructure
– Enabling multiple land uses
• When EI is degraded, land use options reduced, resulting lock-ins into single land use options
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Sedgefield 2006
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Glentana 2006
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(Photo: EDM)
Heidelberg 2007
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Don’t we learn?
Sedgefield 2013 Wilderness 2013
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If we do not clear invasive alien plants …
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COSTS (Chemicals; fuel; labour; ALIEN PLANT MANAGEMENT)
YIEL
D p
er H
ecta
re
“Threshold”
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Degradation of Ecological Infrastructure
• Development decisions use mostly social and financial considerations
• Responses may result in short term ‘maladaptations’
• Unintended consequences
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River Catchments
Farming, Forestry, Urban
NEMA, Roads, Impoundments,
Water Local, Regional,
Provincial, National Floods, Drought
Climate change
Socio-economic
International best practice
Erosion Voting
Lack of capacity Hard engineering solutions
Clearing of Palmiet Monitoring
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Eden Coastline
Property Owners Property Developers
NEMA, ICMP, SPLUMA
Foredunes Local, Regional,
Provincial, National Sea surges
Climate change
Socio-economic
International best practice
Coastal erosion Voting
Lack of capacity Hard engineering solutions
Coastal stabilization Monitoring
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Where to from here?
• Navigating a new, sustainable future for the catchment
• Developing a shared vision with stakeholders
• Supported by good science
• Developing and implementing a local management plan
• Collaborative governance through a Catchment Forum
• Adaptive co-management: learning, experimentation, reflection, adaptation
“Getting our act together for sustainable catchment management for resilient ecological infrastructure”