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Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam

Huong Hoang UGent (2009)
abstract
The thesis aimed to develop a water quality biological monitoring and assessment based on macro-invertebrates to analyse the status of watercourses and to select sustainable restoration measures in order to support river. The research was carried in the Du river basin in northern Vietnam. Spatial and temporal analysis showed that macro-invertebrate community compositions in the Du river were not only driven by morphological characteristics but also by water quality issues. A relatively small temporal variation was detected that requires no remarkable modifications in the development of a bio-assessment methodology for watercourses in the specific river. Multivariate analyses using CCA and Bray-Curtis cluster analysis provided a similar discrimination between pristine and impacted sites in the Du river basin. Qualitative biotic indices including the BMWP-Viet proved to be appropriate for use in the studied watercourses in Vietnam. The BMWP-Viet could differentiate study sites into classes ranging from very good to very poor ecological conditions. The current BMWP-Viet approach can be useful at an early stage of bio-assessment application in Vietnam. However, this method should be improved by optimising the scoring system for common taxa and development of more robust assessment approaches such as multi-metric indices. Data mining techniques including classification trees and support vector machines were applied to develop predictive models for BMWP-Viet as well as presence/absence of macro-invertebrate taxa (ecological indicators). Optimised models indicate the major environmental variables influencing the presence/absence of macro-invertebrates, which in the mean time also reflect the river characteristics that river managers have to consider in their policy plans. A decision support system, the WFD-Explorer was combined with classification trees to link human activities with the ecological river conditions and analyse the relevance of several restoration options.
Please use this url to cite or link to this publication:
author
promoter
UGent and UGent
organization
alternative title
Monitoring en evaluatie van macro-invertebratengemeenschappen ter ondersteuning van rivierbeheer in Noord-Vietnam
year
type
dissertation (monograph)
subject
keyword
ecological modeling, bioassessment, ecological informatics, biological monitoring
pages
XII, 236 pages
publisher
Ghent University. Faculty of Bioscience Engineering
place of publication
Ghent, Belgium
defense location
Ghent University
defense date
2009-09-03 16:00
ISBN
978-90-5989-321-4
language
English
UGent publication?
yes
classification
D1
copyright statement
I have retained and own the full copyright for this publication
id
761732
handle
http://hdl.handle.net/1854/LU-761732
alternative location
http://lib.ugent.be/fulltxt/RUG01/001/351/106/RUG01-001351106_2010_0001_AC.pdf
date created
2009-10-08 10:58:19
date last changed
2009-10-14 11:18:15
@phdthesis{761732,
  abstract     = {The thesis aimed to develop a water quality biological monitoring and assessment based on macro-invertebrates to analyse the status of watercourses and to select sustainable restoration measures in order to support river.
The research was carried in the Du river basin in northern Vietnam. Spatial and temporal analysis showed that macro-invertebrate community compositions in the Du river were not only driven by morphological characteristics but also by water quality issues. A relatively small temporal variation was detected that requires no remarkable modifications in the development of a bio-assessment methodology for watercourses in the specific river. Multivariate analyses using CCA and Bray-Curtis cluster analysis provided a similar discrimination between pristine and impacted sites in the Du river basin.
Qualitative biotic indices including the BMWP-Viet proved to be appropriate for use in the studied watercourses in Vietnam. The BMWP-Viet could differentiate study sites into classes ranging from very good to very poor ecological conditions. The current BMWP-Viet approach can be useful at an early stage of bio-assessment application in Vietnam. However, this method should be improved by optimising the scoring system for common taxa and development of more robust assessment approaches such as multi-metric indices. 
Data mining techniques including classification trees and support vector machines were applied to develop predictive models for BMWP-Viet as well as presence/absence of macro-invertebrate taxa (ecological indicators). Optimised models indicate the major environmental variables influencing the presence/absence of macro-invertebrates, which in the mean time also reflect the river characteristics that river managers have to consider in their policy plans. A decision support system, the WFD-Explorer was combined with classification trees to link human activities with the ecological river conditions and analyse the relevance of several restoration options.},
  author       = {Hoang, Huong},
  isbn         = {978-90-5989-321-4},
  keyword      = {ecological modeling,bioassessment,ecological informatics,biological monitoring},
  language     = {eng},
  pages        = {XII, 236},
  publisher    = {Ghent University. Faculty of Bioscience Engineering},
  school       = {Ghent University},
  title        = {Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam},
  url          = {http://lib.ugent.be/fulltxt/RUG01/001/351/106/RUG01-001351106\_2010\_0001\_AC.pdf},
  year         = {2009},
}

Chicago
Hoang, Huong. 2009. “Monitoring and Assessment of Macroinvertebrate Communities in Support of River Management in Northern Vietnam”. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering.
APA
Hoang, H. (2009). Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam. Ghent University. Faculty of Bioscience Engineering, Ghent, Belgium.
Vancouver
1.
Hoang H. Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam. [Ghent, Belgium]: Ghent University. Faculty of Bioscience Engineering; 2009.
MLA
Hoang, Huong. “Monitoring and Assessment of Macroinvertebrate Communities in Support of River Management in Northern Vietnam.” 2009 : n. pag. Print.