Fish Ecological Studies in Assessing Ecological Integrity of Rivers

This work is intended to assess the integrity of
rivers in Nepal by some fish community base
parameters such as the number of species, composition
and the abundance. However, the variety of other
information regarding fish resource and river
morphology such as spatial and temporal distribution
and density of fish species, size structure of a
species, and substrate and physico-chemical
parameters of the river are also well documented.
Four disturbances, agriculture, urbanization, dams
and weir, and industries were studied here to assess
if there were any impairments on the integrity of the
rivers by them. This work comprised nine rivers of
Nepal in Central and Western Development Region
facing those disturbances. The classifications of
river systems were also tried by using both fish base
variables and abiotic factors using cluster analysis
and discriminant analysis respectively and the
results for these were remarkable. Finally, it was
seen that the fish population dynamics was sensitive
to varieties of disturbances the rivers are facing
indicating that the fish base methods of assessing
water quality and river integrity could be developed
for Nepalese rivers as well.

Autorentext

Name: JHA BIBHUTI RANJAN
Address: Lalitpur-5, Manbhawan, Nepal

Education
1.PhD, under sandwich program between Kathmandu University,
Nepal and Agricultural University (BOKU), Vienna, 2006.
2.Masters in Human Ecology, Free University of Brussels, 1998
3.Masters in Zoology with specialization in Ecology Tribhuvan
University, Nepal, 1992

Klappentext

This work is intended to assess the integrity of
rivers in Nepal by some fish community base
parameters such as the number of species, composition
and the abundance. However, the variety of other
information regarding fish resource and river
morphology such as spatial and temporal distribution
and density of fish species, size structure of a
species, and substrate and physico-chemical
parameters of the river are also well documented.
Four disturbances, agriculture, urbanization, dams
and weir, and industries were studied here to assess
if there were any impairments on the integrity of the
rivers by them. This work comprised nine rivers of
Nepal in Central and Western Development Region
facing those disturbances. The classifications of
river systems were also tried by using both fish base
variables and abiotic factors using cluster analysis
and discriminant analysis respectively and the
results for these were remarkable. Finally, it was
seen that the fish population dynamics was sensitive
to varieties of disturbances the rivers are facing
indicating that the fish base methods of assessing
water quality and river integrity could be developed
for Nepalese rivers as well.