Lanthanum from a Modified Clay Used in Eutrophication Control Is Bioavailable to the Marbled Crayfish (Procambarus fallax f. virginalis)
| Autor: | Eyerusalem Goitom, Miquel Lürling, Ivo Roessink, Frank van Oosterhout |
|---|---|
| Přispěvatelé: | Aquatic Ecology (AqE) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Gill
Aquatic Ecology and Water Quality Management lcsh:Medicine Marine and Aquatic Sciences Astacoidea Toxicology Heavy Metals copper nickel smelters phoslock(r) Water column Limnology lakes Toxins heavy-metals Phoslock lcsh:Science Freshwater Ecology Multidisciplinary Ecology biology national Eutrophication Chemistry Physical Sciences rare-earth-elements Engineering and Technology Aluminum Silicates Hepatopancreas Procambarus fallax Research Article Environmental Risk Assessment Pollutants Environmental Engineering Water Management Toxic Agents Biological Availability chemistry.chemical_element Animal science Dry weight Lanthanum Animals Environmental Chemistry Carapace phosphorus binding clay Phosphorus lcsh:R Ecology and Environmental Sciences Biology and Life Sciences Restoration Ecology toxicity Aquatische Ecologie en Waterkwaliteitsbeheer biology.organism_classification fresh-water sediment chemistry Earth Sciences Clay lcsh:Q accumulation |
| Zdroj: | PLoS One, 9(7):e102410. Public Library of Science PLoS ONE 9 (2014) 7 PLoS ONE PLoS ONE, 9(7) PLoS ONE, Vol 9, Iss 7, p e102410 (2014) |
| ISSN: | 1932-6203 |
| Popis: | To mitigate eutrophication in fresh standing waters the focus is on phosphorus (P) control, i.e. on P inflows to a lake as well as a lake's sediment as internal P source. The in-lake application of the lanthanum (La) modified clays - i.e. La modified bentonite (Phoslock) or La modified kaolinite, aim at dephosphatising the water column and at reducing the release of P from a lake's sediment. Application of these clays raises the question whether La from these clays can become bioavailable to biota. We investigated the bioavailability of La from Phoslock in a controlled parallel groups experiment in which we measured the La in carapace, gills, ovaries, hepatopancreas and abdominal muscle after 0, 14 and 28 days of exposure to Phoslock. Expressing the treatment effect as the difference of the median concentration between the two treatment groups (Phoslock minus control group) yield the following effects, the plus sign (+) indicating an increase, concentrations in µg g(-1) dry weight: Day 14: carapace +10.5 µg g(-1), gills +112 µg g(-1), ovaries +2.6 µg g(-1), hepatopancreas +32.9 µg g(-1) and abodminal muscle +3.2 µg g(-1). Day 28: carapace +17.9 µg g(-1); gills +182 µg g(-1); ovaries +2.2 µg g(-1); hepatopancreas +41.9 µg g(-1) and abdominal muscle +7.6 µg g(-1), all effects were statistically significant. As La from Phoslock is bio-available to and taken up by the marbled crayfishes (Procambarus fallax f. virginalis), we advocate that the application of in-lake chemical water treatments to mitigate eutrophication should be accompanied by a thorough study on potential side effects. |
| Databáze: | OpenAIRE |
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