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Hydrobiologia

, Volume 651, Issue 1, pp 59–76 | Cite as

Assessing river ecological quality using benthic macroinvertebrates in the Hindu Kush-Himalayan region

  • Thomas KorteEmail author
  • Abul Basar Mohammad Baki
  • Thomas Ofenböck
  • Otto Moog
  • Subodh Sharma
  • Daniel Hering
RIVERS IN THE HINDU KUSH-HIMALAYA

Abstract

We developed a system for the assessment of ecological condition for rivers in the lower mountains and lowlands of the Hindu Kush-Himalayan region (Pakistan, India, Nepal, Bhutan, and Bangladesh). We used benthic invertebrates collected from 198 rivers, located in five different ecoregions and covering degradation gradients; samples were taken twice (pre-monsoon and post-monsoon) applying a multi-habitat sampling procedure. Out of 38 environmental parameters, we constructed complex principal component analysis (PCA) gradients, separately for the stressors organic pollution, eutrophication, floodplain land use, and hydromorphological degradation. Correlation analysis between invertebrate metrics and environmental parameters revealed those biological metrics that are most responsive to river deterioration. Redundant metrics were deleted, and the most robust metrics were selected. The range of the index values under reference conditions was defined, and a five-class river quality system was generated.

Keywords

Bioassessment Multimetric Metric Ecoregion ASSESS-HKH Stressor 

Notes

Acknowledgments

This study was supported by the European Commission (contract number: INCO-CT-2005_003659 ASSESS-HKH project). We thank all ASSESS-HKH partners for their contribution to the development of the multimetric index.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Thomas Korte
    • 1
    Email author
  • Abul Basar Mohammad Baki
    • 2
  • Thomas Ofenböck
    • 3
  • Otto Moog
    • 3
  • Subodh Sharma
    • 4
  • Daniel Hering
    • 1
  1. 1.Department of Applied Zoology/Hydrobiology, Institute of BiologyUniversity of Duisburg-EssenEssenGermany
  2. 2.Department of Water Resources EngineeringBangladesh University of Engineering & TechnologyDhakaBangladesh
  3. 3.Department of Water, Atmosphere & Environment, Institute for Hydrobiology & Water ManagementUniversity of Natural Resources and Applied Life SciencesViennaAustria
  4. 4. Department of Environmental Science and Engineering, Aquatic Ecology Centre, Research Development & ConsultancyKathmandu UniversityKathmanduNepal

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