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Limnology of tropical reservoirs in the Amazon area Curua Una

 

The build-up of dams for hydropower use may lead to a severe impact on the environment, especially of the aquatic ecosystem. Our research focuses on environmental effects of a more than 20 years old reservoir, the Curuá-Una Reservoir in Amazon (near Santarem, Brazil). After damming up a period of eutrophication occurred, the so called trophic upsurge.

  • Today the reservoir is still at a high trophic level, and a lack of oxygen is detected in the deeper water body of the reservoir. Ongoing and severe environmental effects are observed.
  • Eutrophication of the reservoir and occurrence of oxygen deficits in deep water layers.
  • Mass development of macrophytes, mainly floating on the surface.
  • Accumulation of iron formed by redox-chemical mobilization and precipitation of iron in the turbine area.
  • The inundated vegetation is not mineralized, caused by water level changes with damage to wood consuming organisms. We must assume that the trunks rest for more than 100 years in the reservoir. This leads to an impact on boating and fishery.

   

 © Gunkel. Inundated vegetation in Curua Una Reservoir, 22 years after damming up, photo taken at low water level
© Gunkel. Inundated vegetation in Curua Una Reservoir, 22 years after damming up, photo taken at low water level

References

  • Gunkel, G. (2009) Hydropower – A green energy? Tropical reservoirs and greenhouse gas emissions. Clean 37, 726-734

  • Gunkel, G., Lange, U., Walde, D. & Rosa, J. W. C. (2003) Environmental and operation impacts of Curuá-Una, a reservoir in the Amazon region of Pará/Brazil. Lakes & Reservoirs: Research and Management 8, 202-216.

  • Gunkel G., Lange U., Walde D. & Rosa J. W. C. (2002) Environmental impact of an Amazon Reservoir, Curuá-Una/Pará: Limnological aspects. Proceedings of the German-Brazilian Workshop on Neotropical Ecosystems, Hamburg. 2000. Lieberei, R., Bianchi, H. K., Boehm, V. & Reisdorff (eds.). Hamburg, 511-516.
  • Water -Special Issue - Invertebrates in Drinking Water Networks
  • Teaching
  • Actual Research: Invertebrates in Drinking Water Networks
  • Competence team `Biological Drinking Water Quality´
  • Environmental impact of tropical reservoirs and development of a sustainable reservoir management in NE Brazil
  • Research Focus and main projects at Berlin University of Technology
    • Bank filtration: Biological processes and implementation in tropical countries
    • Subsurface dams
    • Limnology of tropical high mountain lakes
    • Impact by sugar cane cultivation
    • Risk assessment of volcanic lakes
    • Restoration of lakes and running waters
    • Limnology of tropical reservoir in Amazon
    • Ecotoxicology studies: PCBs, heavy metal co-precipitation, bioaccumulation of atrazine
  • Scientific CV
  • Publikationen
  • Herausgabe von Büchern
  • Publikationen 2015 - 2019
  • Publikationen 2010 - 2014
  • Publkikationen 2005 - 2009
  • Publiaktionen 2000 - 2004
  • Publikationen 1995 - 1999
  • Publikationen 1990 - 1994
  • Publikationen vor 1990

Kontakt:

Dr. Günter Gunkel

Rüdesheimer Str. 2a 
D-13465 Berlin

Fon:  +49 30 401 6994,
Fax:  +49 30 401 04662

Email:  
guenter.gunkel@water-quality-control.de 

guenter.gunkel@inwert.info

Homepage: www.water-quality-control.de
INWERT Institut Link >>

 

 



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    • Water -Special Issue - Invertebrates in Drinking Water Networks
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      • Kleintiere in der Trinkwasserversorgung
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      • BMBF Forschungsvorhaben: Management von großen Stauseen im semi-ariden NO Brasiliens
      • Uferfiltration bei der Trinkwassergewinnung
      • Unterirdische Dämme im Flussbett zur Wasserspeicherung
      • Umweltbelastungen durch Zuckerrohranbau / Bioalkoholproducktion
      • Limnologie aktiver Vulkanseen in Ecuador
      • Sanierung und Renaturierung von degradierten Gewässern
      • Limnologie tropischer Stauseen in Amazonasgebiet
      • Limnologie tropischer Hochgebirgsseen und hochandiner Bäche
      • Ökotoxikolgische Studien: PCB, Schwermetall-Kopräzipitation, Bioakkumulation Atrazin
    • Akademischer Werdegang
    • Publikationen
    • Impressum
  • Welcome Page English
    • Water -Special Issue - Invertebrates in Drinking Water Networks
    • Teaching
    • Actual Research: Invertebrates in Drinking Water Networks
    • Competence team `Biological Drinking Water Quality´
    • Environmental impact of tropical reservoirs and development of a sustainable reservoir management in NE Brazil
    • Research Focus and main projects at Berlin University of Technology
      • Bank filtration: Biological processes and implementation in tropical countries
      • Subsurface dams
      • Limnology of tropical high mountain lakes
      • Impact by sugar cane cultivation
      • Risk assessment of volcanic lakes
      • Restoration of lakes and running waters
      • Limnology of tropical reservoir in Amazon
      • Ecotoxicology studies: PCBs, heavy metal co-precipitation, bioaccumulation of atrazine
    • Scientific CV
    • Publikationen
    • Herausgabe von Büchern
      • Sustainable Management of Water and Land in Semiarid Areas
      • Invertebraten im Tinkwasser
      • Reservoir and River Basin Management
      • Handbuch der Umweltveränderungen und Ökotoxikologie
      • Renaturierung kleiner Fließgewässer
      • Bioindikation in aquatischen Ökosystemen
    • Publikationen 2015 - 2019
    • Publikationen 2010 - 2014
    • Publkikationen 2005 - 2009
    • Publiaktionen 2000 - 2004
    • Publikationen 1995 - 1999
    • Publikationen 1990 - 1994
    • Publikationen vor 1990
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