Cadmium, copper and lead in aquatic macrophytes in Shoal Lake (Manitoba-Ontario)

Abstract

Cadmium, copper and lead concentrations were surveyed in several species of submerged aquatic macrophytes in a Precambrian Shield Lake . Values were variable within each species and interspecific differences in metal concentration were not significant over the season as a whole . Cadmium concentration increased during the season in Potamogeton foliosus and Myriophyllum exalbescens, while copper and lead declined in P. foliosus . No identifiable seasonal trends were seen in P. zosteriformis and P . robbinsii . In P, foliosus, copper and lead concentrations increased with water depth . Few significant correlations were found between metal concentrations in the shoots and each of several water chemistry parameters, temperature, and shoot chlorophyll, soluble sugar and starch content . Roots yielded greater metal concentrations than shoots . 253

Bioaccumulation, Detection and Analyses of Heavy Metal Pollution in Sultan Marsh and Its Environment

“…Heavy metal bioaccumulation has been observed within different species of the same genus under the same environmental conditions. These results showed that metal uptake not only regulated to physical status but also is regulated by the plant organism via specific physiological mechanisms that are not known in all cases (Pip, 1990;Mortimer, 1985). In general, roots revealed greater heavy metal concentrations than leaves, while stems have the lowest concentration.…”

Bioaccumulation of Heavy Metals by Aquatic Macrophytes around Wrocław, Poland

“…5, Pip (1990), Potamogeton richardsoni, P. gramineus, Najas flexilis, Elodea canadensis, Shoal Lake (Canada). 6, Reimer (1989), Potamogeton gramineus, Shoal Lake (Canada).…”

“…Aquatic macrophytes are known to have great importance, forming a substantial component of the primary production in many aquatic habitats (Pip, 1990). Investigations concerning their role in the cycling of elements, especially heavy metals, is of particular interest.…”

A Study of Chromium, Cooper, and Lead Distribution from Lignite Fuels Using Cultivated and Non-cultivated Plants as Biological Monitors

“…Most species were found to be root accumulators (Pip 1990;Stoltz and Greger 2002;Chaignon et al 2003;Wang et al 2004;Baycu et al 2006;Chehregani et al 2009), and only small amounts of metals are translocated from the root to the aboveground parts of plants. In general, if we overlook the aerial deposition and concentrate on the root uptake, roots revealed a higher metal concentration than that of the other plant organs.…”