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Accumulation of selenium by the aquatic biota of a watershed treated with seleniferous fertilizer
The bioaccumulation and transfer of selenium by aquatic biota was evaluated. A seleniferous fertilizer (Selcote) containing 1 per cent selenium was aerially applied to an experimental area in the Little Antelope valley, Calif. Water, macrophyte and invertebrate samples were collected from 3 stream s...
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Published in: | Bulletin of environmental contamination and toxicology 1998-03, Vol.60 (3), p.409-416 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | The bioaccumulation and transfer of selenium by aquatic biota was evaluated. A seleniferous fertilizer (Selcote) containing 1 per cent selenium was aerially applied to an experimental area in the Little Antelope valley, Calif. Water, macrophyte and invertebrate samples were collected from 3 stream sites, prior and subsequent to the application of the fertilizer and analysed for selenium. Selenium levels in the aquatic systems of the treated areas (0.25 ug selenium per litre) were within the typical ranges reported for natural freshwater systems. Selenium rapidly bioaccumulated in aquatic macrophytes and invertebrates (0.60 to 1.16 and 0.5 to 4.74 mg selenium per kg dry weight, within 2 weeks, respectively) with a residence time of more than a year. Although no acute toxic effects were observed in the invertebrate communities, laboratory data indicated the potential for an ecotoxic problem. |
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ISSN: | 0007-4861 1432-0800 |
DOI: | 10.1007/s001289900641 |