José Yunis, Country Representative in Colombia for TNC
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© HaroldoPalo, Jr Magdalena River: preventing with development by design the loss of biodiversity, fisheries and water services CBD Nagoya, Japan, October 20, 2010 José Yunis, Country Representative in Colombia for TNC Thomas Walschburger, Lead Scientist NASCA region, TNC Patricia Tellez, Lead Hydrologist NASCA region, TNC
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José Yunis, Country Representative in Colombia for TNC Thomas Walschburger, Lead Scientist NASCA region, TNC Patricia Tellez, Lead Hydrologist NASCA region, TNC. - PowerPoint PPT Presentation
Transcript of José Yunis, Country Representative in Colombia for TNC
© HaroldoPalo, Jr
Magdalena River: preventing with development by design the loss of biodiversity, fisheries and water servicesCBD Nagoya, Japan, October 20, 2010
José Yunis, Country Representative in Colombia for TNCThomas Walschburger, Lead Scientist NASCA region, TNCPatricia Tellez, Lead Hydrologist NASCA region,TNC
Conserving at a watershed scale
Set priorities based on biodiversity portfolio, set ecological limits of hydrologic alteration (environmental flows)
Understand other sector needs and plans
Negotiate so watershed ecosystems can be protected in the long run with a broader vision
Magdalena´s Watershed
24% of Colombian Territory32.5 million people living in the area77% total population and 80% country´s GDP7.100 m3/s in 273.459 Km2
5th most important watershed in South America (flows)
50% endemic fish speciesCollapse in fisheries, from 80.000 tons fish catch a year to 8.000 ton/year in the last 15 yearsOut of 200.000 total tons of fish catch/year (combined marine and freshwater), 80.000 came from Magdalena´s watershed
Key variables and threats to freshwater ecosystems
Hábitat Físico
Oferta Energía/Carbón
ComposiciónBiótica
Conectividad
Calidad De Agua
Régimen Hidrológico
Integridad
Dams, Intensive Agriculture
Agriculture, Urban sewage, waste,Mining
Dams,Dikes,Infrastructure
Overfishing, Invasive/exotic species
Habitat loss: (mining,consolidaciónde bancos) sedimentation,Deforestation
Deforestation, Habitat losses near lake and rivers
Environmental flows needed by ecosystems and species
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Eclosion
Feeding HabitatsFlooded forest
Riparian habitats for feeding grounds
Adult migration
Hydrological Regime
© HaroldoPalo, Jr
Alteración Hidrológica
Green River Below Flaming Gorge (1952)
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High productivitySuperficial, low speed of water•Floodplain vegetationHigh Productivity
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Dam flows
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High productivity reduced area River Lagoon
Loss of connectivity
Environmental Flows
Where to protect, Freshwater Portfolio
Classification of watersheds according to sizes
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Clase 1. entre 100 y 1.000 km2 (466)
Clase 2. entre 1000 y 10.000 km2 ( 33)Clase 3. entre 10.000 y 100.000 km2 (5)Clase 4. entre 100.000 y 1.000.000 km2 (1)Clase 5. mayor a 1.000.000 km2
Classification according to biophisiycal properties: (climate, geology, geomorphology, hidrology)
150 tipos de ecosistemas diferentes
Área Activa de Inundación y Planos inundable
50 PRIORITY 50 PRIORITY BIODIVERSITY SITES BIODIVERSITY SITES WERE IDENTIFIED IN WERE IDENTIFIED IN MAGDALENA´SMAGDALENA´SWATERSHED TO BE WATERSHED TO BE PROTECTED PROTECTED
FRESHWATER CONSERVATION PORTFOLIOFRESHWATER CONSERVATION PORTFOLIO
Límits for sustainability at a watershed scale with a new dam
Fishing groundsFloodplains
Habitats for eggs
Migrations
Existing dam
Proposed dam
Priority conservation river segment
Conservation Plan
Hydropower Plan
Spawninghabitat
Headwaterhabitat
Floodplain fishery
Lack of integrated planning.. race to the bottom
Existing dam
Proposed dam
Priority conservation river segment
Conservation Plan
Hydropower PlanCompare Scenarios
Priority conservation river segment
Existing dam
Proposed dam
Cross-compare scenarios
Modify downstream dam operations
Cascadesame energy
Locate additional damsin already developed segment and eliminate conflicting dam
Locate areas of conflict
-Similar ecosystem values-Similar hydropower outputs
TNC´s PROPOSAL FOR THE MAGDALENA
$50 US million investment for Magdalena´s watershed for next 4 years:
US$15-20 million coming out of central government catalytic investmentUS$25-30 from regional government fundingUS$2.5-5 from international cooperation
To finance 5 activities:
Protection of the 50 places of freshwater porfolioImplementing fishing plansNegotiate siting and economic models for energy, agriculture, mining and aqueducts Climate Change AdaptationBuilding capacity for water management
