proposed hidrovia: maintenance requires 14 dredges per day for 365 days estimated cost: $127,750,000...
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Proposed Hidrovia: Maintenance
Requires 14 dredges per day for 365 days
Estimated Cost: $127,750,000 per year 101
Potential Effects of Hidrovia in Pantanal
A Channel of only 2.5 m would
• Reduction of Flooded Areas & Habitats up to 50%
• Salinization of Soils
Source: Hamilton (1999)102
Commercial and Sports Fisheries
• 9 Species represent 80% of catch, e.g.
• Dourado: Salminus maxillosus• Curimbata: Prochilodus lineatus• Pacu: Piaractus mesopotamicus• Pintado: Pseudoplatystoma corruscans• Cachara: P. fasciatum• Jau: Paulicia luetkeni
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Commercial and Sport Fisheries
• Each of the 9 nine species undergoes dramatic seasonal migrations up the Rio Paraguay and into the
Flooded Areas
• Reproductive success depends upon the natural cycle of flooding
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Potential Effects of Hidrovia in Pantanal
A Channel of only 2.5 m would
• Reduction of Flooded Areas & Habitats up to 50%
• Reduction of up 40% of Fish Species, including the commercially important species and sports fishery
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Potential Sustainable Fisheries Value
Commercial Fisheries $660,000,000
Sports Fishery $ 25,000,000
Total Annual Value $685,000,000
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Estimated Annual Costs of Hidrovia:
Dredging: $127,750,000
Fisheries: $340,000,000
Total: $467,000,000 108
Proposed Hidrovia
2250 km
1444 mi
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1884 1938
1867 & 1903
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Proposed Hidrovia
2250 km
1444 mi
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Conclusions
1. Aquatic Flora and Fauna are neither homogeneously nor randomly distributed
A. SubregionsB. Macrohabitats
2. Flooded vegetation and unmodified riparian forest increase the abundance and species richness of fishes
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Conclusions
3. Maintenance of flooded areas and natural flood cycle is critical
A. BiodiversityB. Areas of ReproductionC. Nursery Areas
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Conclusions
4. Maintenance of Main Channel is critical for many commercially important species
5. Develop a plan for integrated use such that set aside:
A. HeadwatersB. Flooded areas
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Conclusions
6. Economic value of sustainable fisheries is considerable and must be factored in economic models
7. Protection of hydrologic system is beneficial for biodiversity, agriculture and cattle ranching!
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“There already is a Hidrovia, modify theboats not the river!” Dr. Mario Dantas Director, EMBRAPA
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