By P. M. Outridge, B. N. Noller (auth.), George W. Ware (eds.)
Reviews of Environmental infection and Toxicology publishes authoritative reports at the incidence, results, and destiny of pesticide residues and different environmental contaminants. it's going to hold you knowledgeable of the most recent major matters through supplying in-depth info within the parts of analytical chemistry, agricultural microbiology, biochemistry, human and veterinary medication, toxicology, and meals technology.
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Additional resources for Reviews of Environmental Contamination and Toxicology: Continuation of Residue Reviews
There are three possible fates for elements accumulated by FVPs: (i) entry into food chains through consumption by herbivores; (ii) excretion into the water column; and (iii) release or resedimentation upon decomposition of the plant. It is unclear whether submerged aquatic plants in general are capable of excreting trace elements from their tissues into water (Denny 1980). Only three studies (Czuba and Mortimer 1980, Everard and Denny 1985, Mayes et al. , where data purporting to show excretion could not be explained by contamination of the experimental chamber or by biomass dilution of element concentrations).
B. ). Methodological differences between studies are of greatest concern. Perhaps as a result, serious discrepancies appear in the results, particularly for Cd. A German-language publication (Schuster 1979) provided useful information on experimental design and techniques required in metal toxicity studies with freshwater plants, but a comparable English-language manual has not appeared. , the First Symposium on the Use of Plants for Toxicity Assessment, Atlanta, April 1989, co-sponsored by the USEPA) may stimulate the necessary research and development work.
The springtime accrual of elements by vascular macrophytes is consistent with the "luxury consumption" hypothesis (Loehwing 1951), which contends that plants early in the growing season rapidly take up minerals in amounts surplus to normal metabolic requirements, coinciding, with a period of rapid protein synthesis. There is evidence of this for Mn, Cu, Sr, Zn, and essential base cations in Typha latifolia (Smith et al. 1988). These seasonal -changes in element status have not been adequately accounted for in many macrophyte/toxic element surveys.