Proposed Hidrovia: Maintenance

1
Proposed Hidrovia Maintenance Requires 14
dredges per day for 365 days Estimated Cost
127,750,000 per year
101
2

• 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
3

• 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

103
4

• 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

104
5

• 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

105
6
106
7
Potential Sustainable Fisheries
Value Commercial Fisheries
660,000,000 Sports Fishery
25,000,000 Total Annual Value
685,000,000
107
8
Estimated Annual Costs of Hidrovia Dredging
127,750,000 Fisheries 340,000,000 Total
467,000,000
108
9
Proposed Hidrovia 2250 km 1444 mi
109
10
110
11
111
12
1867 1903
1938
1884
112
13
Proposed Hidrovia 2250 km 1444 mi
113
14
114
15
115
16

• Conclusions
• Aquatic Flora and Fauna are neither homogeneously
  nor randomly distributed
• Subregions
• Macrohabitats
• Flooded vegetation and unmodified riparian forest
  increase the abundance and species richness of
  fishes

116
17

• Conclusions
• Maintenance of flooded areas and natural flood
  cycle is critical
• A. Biodiversity
• B. Areas of Reproduction
• C. Nursery Areas

117
18

• Conclusions
• 4. Maintenance of Main Channel is critical for
  many commercially important species
• Develop a plan for integrated use such that set
  aside
• A. Headwaters
• B. Flooded areas

118
19

• Conclusions
• Economic value of sustainable fisheries is
  considerable and must be factored in economic
  models
• Protection of hydrologic system is beneficial
  for biodiversity, agriculture and cattle
  ranching!

119
20
There already is a Hidrovia, modify the boats
not the river!
Dr. Mario Dantas
Director, EMBRAPA
120