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Water and sediment quality of Ashtamudi estuary, a Ramsar site, southwest coast of India—a statistical appraisal
Ashtamudi estuary, situated on the southwest coast of India, is enormously affected by anthropogenic interventions. Physicochemical quality of water and sedimentological features of the estuary are evaluated during monsoon and nonmonsoon seasons to elucidate its quality vari- ations and to link the...
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| Format: | Printed Book |
| Veröffentlicht: |
Environ Monit Assess
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| Schlagworte: | |
| Online Zugang: | http://10.26.1.76/ks/005843.pdf |
| Zusammenfassung: | Ashtamudi estuary, situated on the
southwest coast of India, is enormously affected
by anthropogenic interventions. Physicochemical
quality of water and sedimentological features of
the estuary are evaluated during monsoon and
nonmonsoon seasons to elucidate its quality vari-
ations and to link the same with existing en-
vironmental scenario. The whole data has been
factorized using principal component analysis for
extracting the total variability and linear relation-
ships existing among a set of different physic-
ochemical parameters of the backwater system.
In PCA, high loadings were obtained for con-
ductivity, salinity, fluoride, calcium, magnesium,
sulfate, boron, and pH. The results were revealed
that all the physicochemical processes depend
upon seasonal fluctuation of freshwater input and
seawater intrusion. Wide spatial concentration fluctuations of organic carbon and iron in bot-
tom sediment have been noticed and both con-
stituents reveal good correlation with sediment
texture. The results showed high deterioration of
the physicochemical quality of water during non-
monsoon season with respect to monsoon season |
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| Beschreibung: | p.307–319 (2010) 165: |