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The influence of anthropogenic loading on the distribution of soft bottom benthic organisms of a tropical estuary (Cochin backwaters) was examined. The industrial activities were found to be high in the northern and central part of the estuary, where dissolved inorganic nitrogen (DIN > 210 μM) and phosphorus (DIP > 6.5 μM) have caused high abundance of(More)
Cytotaxonomic investigations were carried out on eight species of the medicinally important genus Thottea from the Western Ghats, India. Chromosome numbers are reported for the first time in seven endemic Thottea spp. The meiotic and mitotic chromosome numbers are discussed in taxonomic and phylogenetic contexts. Uniformity in chromosome numbers in all the(More)
Concentrations and distributions of trace metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in surficial sediments of the Cochin backwaters were studied during both monsoon and pre-monsoon periods. Spatial variations were in accordance with textural charaterstics and organic matter content. A principal component analysis distinguished three zones with(More)
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