nile basin wetlands — an important natural resource
DESCRIPTION
Poster by Rebelo, L.M. for: CPWF Nile Basin Focal Project Final Workshop, Dar es Salaam, Tanzania, 9 December 2009.TRANSCRIPT
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Improved Agricultural Water Management In the Nile Basin
Nile Basin Wetlands: An important natural resourceLisa‐Maria Rebelo 1
1 International Water Management Institute, Addis Ababa, Ethiopia
Wetlands occur extensively across the Nile BasinShould be considered a key component in IWRM
The Sudd Wetland: Mapping inundation extent using ALOS PALSAR
All images provided courtesy of JAXA, and acquired as part of the ALOS Kyoto and Carbon Initiative for Science Team product development: Prototype area, the Upper Nile
Ecosystem services provided by or derived from wetlands (adapted from MEA, 2005)
Water storage
Surface water holding
Groundwater recharge
Groundwater discharge
Flow regulation
Flood mitigation
Water quality control
Water purification
Retention of nutrients
Retention of sediments
Retention of pollutants
Hydrological regulating functions of wetlands (Ramsar, 1999)Spatial distribution and areal extent of wetlands within the Nile Basin (Derived
from Lehner and Döll, 2004, and Di Gregorio, 2002)
Wetlands offer many important ecosystem servicesThey support a wide range of agricultural activities Their sustainable management is thus critical
June 2007 September 2007 December 2007
Opportunities and constraints for optimal benefits
Knowledge base of wetland
biodiversity and conservation
needs
Analyse Sudd hydrology and implications to/from
WR developments
Knowledge base of socio‐economic system
Livelihoods and socioeconomics
Fisheries
Hydrology andwater resources
Ecosystem andbiodiversity Livestock
The Sudd wetland
Analyse opportunities and constraints for optimal
benefits
Synthesize the 5 components to identify management options, and conflicts and
tradeoffs for thesePrincipal Components Analysis showing temporal variance, i.e. how
and when the water moves through the system