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The Great Green Wall :
a potential driver of transformation and
increased resilience in Sahelian landscapes
D. Goffner (1)...
Not a “wall of trees”
Not just planting trees
Women-run fruit and vegetable gardens in villages
The Great Green Wall:
A set of cross-sectoral actions to achieve
environmental and human well-being.
Increased forest cove...
« Regreening » is possible in the Sahel : example
of farmer-managed natural regeneration
1975 2005
Zinder region, Southern...
CNRS Human – Environment Observatory :
an interdisciplinary research space to study
the Green Wall
PLANT, ANIMAL, MICROBIA...
Socioecological description of the region
 Sylvopastoral zone
Dry season (Oct -June )Rainy season (July – Sept)
Peul (90%...
Interdisciplinary research arising from a simple gesture: planting a tree
Choice of tree species (adaptability)
HEALTH SCI...
Single
environment
"the collaborative effort of multiple disciplines — working locally, nationally,
and globally — to atta...
Biodiversity at the root
of social and ecological
resilience
From Medellin multi-stakeholder dialogues
Röckstrom and Bapti...
Species currently planted in Senegal since 2008
Acacia senegal Balanites aegyptiaca Acacia tortilis raddiana
Why we need t...
• What do local people want to plant?
- Ethnobotanical research
• What can we realistically plant ?
- Experimental field t...
Food
Construction
Health
Energy
Ziziphus mauritiana Adansonia digitata Sclerocarya birrea
BASIC NEEDS
Grewia bicolor
Acaci...
Field work in 5 hectare experimental plot - since 2013
AUGUST 2013
1200 trees
Parameters tested
- Provenances
- Addition o...
Understanding the complex social-ecological systems operating
along the GW as a pre-requisite for natural resource managem...
An interactive structure conducive to action research
Université Cheikh Anta Diop
Dakar, Senegal
(UCAD)
Senegalese Nationa...
CONCLUSIONS
The Green Wall: an opportunity for real concerted effort
to face an urgent Pan African (and even global)
socio...
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Goffner d 20150708_1500_upmc_jussieu_-_room_307

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Goffner d 20150708_1500_upmc_jussieu_-_room_307

  1. 1. The Great Green Wall : a potential driver of transformation and increased resilience in Sahelian landscapes D. Goffner (1), A. Guissé (2), JL. Peiry (3) P. Duboz (1) ; G. Boetsch (1) (1) CNRS (French National Centre for Scientific Research) UMI 3189 Environment, Health, and Societies, Dakar, Senegal and Marseille, France (2) UCAD (Cheikh Anta Diop University) Dakar, Senegal (3) GEOLAB (UMR 6042, Université Blaise Pascal) Clermont Ferrand, France
  2. 2. Not a “wall of trees”
  3. 3. Not just planting trees Women-run fruit and vegetable gardens in villages
  4. 4. The Great Green Wall: A set of cross-sectoral actions to achieve environmental and human well-being. Increased forest cover Improved soil health Restoration and conservation of biodiversity Improved use of water resources Prevention of undesired rural exodus Increase livelihoods of local populations OBJECTIVES ENVIRONMENTAL ECONOMIC SOCIAL Development and diversification of agricultural and livestock systems
  5. 5. « Regreening » is possible in the Sahel : example of farmer-managed natural regeneration 1975 2005 Zinder region, Southern Niger Photos: Gray Tappan
  6. 6. CNRS Human – Environment Observatory : an interdisciplinary research space to study the Green Wall PLANT, ANIMAL, MICROBIAL BIOLOGY EARTH AND ENVIRONMENTAL SCIENCES HEALTH SCIENCES SOCIAL SCIENCES
  7. 7. Socioecological description of the region  Sylvopastoral zone Dry season (Oct -June )Rainy season (July – Sept) Peul (90%) Wolof (8%) The people
  8. 8. Interdisciplinary research arising from a simple gesture: planting a tree Choice of tree species (adaptability) HEALTH SCIENCES ANIMAL BIOLOGY, MICROBIOLOGY SOCIAL SCIENCES Local use preference/utility EARTH AND ENVIRONMENTAL SCIENCES PLANT BIOLOGY EpidemiologyStudy of natural populations Domestication strategies Soil microbial abundance/biodiversity Potential for improving livelihoods Effect on traditional herding practices Environmental awareness/education Impact on soil fertility Best water conservation practices Impact on human nutrition Livestock fodder quantity and quality Impact on climate change – (ie CO2 sequestration, rainfall patterns)
  9. 9. Single environment "the collaborative effort of multiple disciplines — working locally, nationally, and globally — to attain optimal health for people, animals and the environment". One Health
  10. 10. Biodiversity at the root of social and ecological resilience From Medellin multi-stakeholder dialogues Röckstrom and Baptiste, 2013
  11. 11. Species currently planted in Senegal since 2008 Acacia senegal Balanites aegyptiaca Acacia tortilis raddiana Why we need to increase biodiversity along the Green Wall
  12. 12. • What do local people want to plant? - Ethnobotanical research • What can we realistically plant ? - Experimental field trials Choice of species
  13. 13. Food Construction Health Energy Ziziphus mauritiana Adansonia digitata Sclerocarya birrea BASIC NEEDS Grewia bicolor Acacia tortilis subsp raddianaBalanites aegyptiaca Ethnobotanical surveys : identification of eleven tree species for reforestation trials Acacia senegal Tamarindus indica Dalbergia melanoxylon Acacia seyalAcacia nilotica Niang et al. (2014.) Journal of Experimental Biology and Agricultural Sciences
  14. 14. Field work in 5 hectare experimental plot - since 2013 AUGUST 2013 1200 trees Parameters tested - Provenances - Addition of organic matter - Tree age when transplanted Also used as an educational tool !
  15. 15. Understanding the complex social-ecological systems operating along the GW as a pre-requisite for natural resource management The past : how/why it has become what it is today The future: multi-stakeholder scenarios workshops (exploring drivers of future change, defining possible and desirable trajectories) The present: spatial description of « what is » Enfors et al (2008) Ecology and Society 13(2): 42
  16. 16. An interactive structure conducive to action research Université Cheikh Anta Diop Dakar, Senegal (UCAD) Senegalese National GW Agency CNRS GW Human Environment Observatory Civil society and local populations
  17. 17. CONCLUSIONS The Green Wall: an opportunity for real concerted effort to face an urgent Pan African (and even global) socio-ecological challenge Need to densify the networks between research and development efforts : OHM fills an ecological niche. Need to implement slower, research-based strategies aimed towards long term objectives that accompany fast track, top- down reforestation action Need for more bottom-up communication from local to political levels BUT:

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