Linking rainwater management strategies to ecosystem/environmental health and resilience Mulugeta Lemenih Nile Basin Devel...
Background: RWM = SLM? <ul><li>‘ RWM is a variation of SLM’ (Nile 1). Same technologies and practices;  </li></ul><ul><ul>...
Sustainability & Resilience: how are they related? <ul><li>Sustainability : what is it? </li></ul><ul><ul><li>Is it  adapt...
Past  SES development (drivers, interactions) Future SES E & E (Ecosystem services supply and tradeoff) R E S I L I E N C ...
Sustainability & Resilience <ul><li>Is this a sustainable system?  </li></ul><ul><ul><li>Yes, wrt crop yield/yr/landscape ...
How can we assess impacts of RWM on system resilience (landscape + LH)? <ul><li>Resilience concept re-defined within the N...
What have we done and plan to do? <ul><li>Two sites already visited: </li></ul><ul><li>Preliminary assessment made: qualit...
Diga case <ul><ul><li>Drivers: changing political institutions & associated access right to land and other resources, poli...
Trends and trajectories  Ecological State Change Drivers of change eroded existing GS and NRM traditions and replaced it w...
Fogera: Drivers: political institutions & accompanying policies; - land re-distribution; population growth, etc.  Income o...
Trend and trajectories How will RMS affect this system? Governance system Signs of ecological state recovery and improved ...
Ecosystem services supply & tradeoffs analysis <ul><li>Theoretical framework </li></ul>SES Crop biomass Social benefits Wa...
How to assess ESs & tradeoffs?  <ul><li>Proposed methodologies, yet to be refined: </li></ul><ul><ul><li>For water related...
Thanks
Upcoming SlideShare
Loading in …5
×

Linking rainwater management strategies to ecosystem/environmental health and resilience

718 views
621 views

Published on

Presented by Mulugeta Lemenih to the Nile Basin Development Challenge Science and Reflection Workshop , Addis Ababa, 4-6 May 2011

Published in: Technology, Health & Medicine
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
718
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
10
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Linking rainwater management strategies to ecosystem/environmental health and resilience

  1. 1. Linking rainwater management strategies to ecosystem/environmental health and resilience Mulugeta Lemenih Nile Basin Development Challenge Science and Reflection Workshop Addis Ababa, 4-6 May 2011
  2. 2. Background: RWM = SLM? <ul><li>‘ RWM is a variation of SLM’ (Nile 1). Same technologies and practices; </li></ul><ul><ul><li>Emerging as SLWM; </li></ul></ul><ul><li>Changing emphasis in SLM definitions since MEA (examples): </li></ul><ul><ul><li>land managed to maintain or improve ecosystem services for human well-being, as negotiated by all stakeholders (UNCCD, 2009); </li></ul></ul><ul><ul><li>Knowledge-based procedure that helps integrate land, water, biodiversity and environmental management (including input and output externalities) to meet rising food and fiber demands while sustaining ecosystem services and livelihoods ( World Bank, 2005); </li></ul></ul><ul><li>Therefore focus of RMS = restoring or enhancing ecosystem services, insuring multi-functionality & building resilience! </li></ul><ul><ul><li>Focus on ESs is important since PES is emerging as driving incentive for environmental management </li></ul></ul>
  3. 3. Sustainability & Resilience: how are they related? <ul><li>Sustainability : what is it? </li></ul><ul><ul><li>Is it adaptability and endurance or stability (steady state ) of a system? </li></ul></ul><ul><ul><ul><li>Is it buffering of disturbances or shocks (environmental, market, political, social) and continue functioning or a system that is operating under prescribed conditions? </li></ul></ul></ul><ul><ul><li>The former is resilience (defined as): </li></ul></ul><ul><ul><ul><li>Which is capacity of a system to survive, adapt, and/or grow in the face of disturbances or stresses, </li></ul></ul></ul><ul><li>A sustainable system is the one that is resilient system </li></ul>
  4. 4. Past SES development (drivers, interactions) Future SES E & E (Ecosystem services supply and tradeoff) R E S I L I E N C E = Sustainable A conceptual framework!! R E S I L I E N C E = sustainable Trends and development trajectories =(measure of resilience) Present SES E & E outcomes (Ecosystem services supply) Time Livelihoods and benefits RWM practices RWM governance Future scenarios
  5. 5. Sustainability & Resilience <ul><li>Is this a sustainable system? </li></ul><ul><ul><li>Yes, wrt crop yield/yr/landscape (also financial gains/hh??) </li></ul></ul><ul><ul><li>No, in many measures of ecosystem resources (e.g. soil, biodiversity, water quantity, etc.)! </li></ul></ul><ul><ul><ul><li>We are gradually eating into the natural capital & compromising options for the future! </li></ul></ul></ul><ul><li>Is this a resilient system? Yes but the trend or development trajectory of the SES is degradation? </li></ul><ul><ul><li>Intensification of natural capital use </li></ul></ul>Crop yield/yr/landscape
  6. 6. How can we assess impacts of RWM on system resilience (landscape + LH)? <ul><li>Resilience concept re-defined within the NBDC context: </li></ul><ul><ul><li>A system (e.g. watershed, landscape, etc.) that maintains a range of supporting , regulating and provisioning ecosystem services ! </li></ul></ul><ul><ul><ul><li>Diversity/quality of ESs = ability to resist or withstand shocks or perturbations! </li></ul></ul></ul><ul><ul><ul><li>Simplification of ESs (reduction of ESs) = Vulnerability; </li></ul></ul></ul>LS Crop biomass Social benefits Water quality/quantity Biodiversity Cultural values (etc) Soil health
  7. 7. What have we done and plan to do? <ul><li>Two sites already visited: </li></ul><ul><li>Preliminary assessment made: qualitatively past to present SES dynamics, drivers, interactions and impacts briefly captured, and trajectories assessed: The SES analytical framework followed the below…) </li></ul>
  8. 8. Diga case <ul><ul><li>Drivers: changing political institutions & associated access right to land and other resources, policy changes, population growth (birth + migration), state farms and military campus, </li></ul></ul>
  9. 9. Trends and trajectories Ecological State Change Drivers of change eroded existing GS and NRM traditions and replaced it with a system that is more exploitative and poor in GS . Thus intensify rapid ecological state change. Productive and self-sufficient SES under Gumuz occupancy (Pre-1960s) Small scale water innovation system, in which GS was integral part Governance state change Severe conflict over resources, landlessness, etc. could these be the threshold? Where will RWS leading the system trajectory? Which ESs will be enhanced and which compromised?
  10. 10. Fogera: Drivers: political institutions & accompanying policies; - land re-distribution; population growth, etc. Income or crop harvest
  11. 11. Trend and trajectories How will RMS affect this system? Governance system Signs of ecological state recovery and improved productivity due to innovative water use, outmigration and SWC, but without signs of no GS improvement 40-50 years back the SES was productive with little sign of ecological system degradation and social system problem Lack of awareness, institutional change (politics, policy, tradition) coupled with population growth eroded the traditional GS Deforestation and soil fertility loss intensified, land use shifted, land scarcity heightened, water use also intensified Resource system
  12. 12. Ecosystem services supply & tradeoffs analysis <ul><li>Theoretical framework </li></ul>SES Crop biomass Social benefits Water quality/quantity Biodiversity Cultural value Soil health SES Crop biomass Social benefits Water quality/quantity Biodiversity Cultural value Soil health RMS
  13. 13. How to assess ESs & tradeoffs? <ul><li>Proposed methodologies, yet to be refined: </li></ul><ul><ul><li>For water related ESs = SWAT </li></ul></ul><ul><ul><li>For biodiversity, crop, etc. = field + RS (GIS)+models; </li></ul></ul><ul><ul><li>For social related aspects = survey </li></ul></ul><ul><ul><li>So, combinations of d/t data collection methods </li></ul></ul><ul><li>Trade-off/synergy analyses = scenarios coupled with tools such as InVEST or Polyscape? </li></ul>
  14. 14. Thanks

×