rnc* thinking: missing tool for achieving zero net land degradation (* restoring natural capital )...
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RNC* thinking: missing tool for achieving zero net land degradation
(* Restoring Natural Capital)
James AronsonSociety for Ecological Restoration (SER)
CEFE/CNRS, France, Missouri Bot. Garden, USA
Convention on Biological Diversity COP11 – October 15, 2012Land Degradation Day at the Rio Conventions Pavilion
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Blignaut et al. 2007: Ecol. Restoration 26:143-150.
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ER = “the process of assisting the recovery of ecosystems that have been degraded, damaged or destroyed.”
(www.ser.org/Primer, 2004)
Mission statement of SER:…to promote ER as a means of sustaining the diversity of life on Earth & reestablishing an ecologically healthy relationship between nature and culture.
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Nature conservation & ecological restoration
vs. Economic development?A false dichotomy.
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(Renewable) Natural Capital
= natural, near-natural & cultivated ecosystems (& indigenous biodiversity)
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Ecosystem goods and services (EGS)represent the “dividends” (= fluxs) that flow from “stocks” of Natural Capital (= savings accounts; inheritance, heritage, etc.).
Imagine a waterfall, or cascade……
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Institutions & human Judgments determining
(the use of) services
Ecosystems & Biodiversity
Services
Management &restoration for sustained use
(Flood control,Crop polli-nation, etc.
Feedback betweenvalue perception
and use of eco-system services
Functions
(e.g . slow water
passage, biomass)
(e.g . vegetation cover or Net
Primary Productivity
Biophysical Structure
& processes
-
(contributionto health,
safety, etc.)
Benefits
Human wellbeing (socio cultural context)
Total economic Value
Source: de Groot et al. 2010. TEEB (The Economics of Ecosystems and Biodiversity): Ecological and Economic Foundations. Pp. 9-40.
TEEB « Cascade » Figure
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Investing in Natural Capital and Economic Development: South Africa’s Drakensberg Mountains
J.N.Blignaut, J. Aronson, M. Mander & C. Marais 2008. Ecological Restoration 26:143-143-150.
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Water footprint of Drakensberg Water Catchment. Blignaut et al. 2008. Ecological Restoration 26:143-143-150.
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Ukhombe case (Northern Drakensberg, South Africa)
Net return of one hectare, in Euros (€)
€20
€10
€7.5
Return from cattle under conditions of
over grazing
€5.6Return from cattle under sustainable
management
€7.8 Winter water
€11.3 Sediment
€17 Carbon
€24 Tourism
(Blignaut et al. 2008, 2009.)
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TAKE HOME MESSAGES: Restoration and rehabilitation are:
• a biodiversity conservation tool &• an indispensable element of a sustainable
local economic development strategy.
Natural capital is like other forms of capital from which we receive benefits (EGS) that we value because they contribute to human wellbeing.
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Restoration and rehabilitation are conduits for Rio 3Cs synergy, helping society transition towards a sustainable and desirable future.
You can’t restore natural capital without restoring social capital. Way to go? Top-down and bottom-up combined.
TAKE HOME MESSAGES, continued:
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Blignaut et al. 2007: Ecol. Restoration 26:143-150.