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Refining and Testing a Trace Metal Biomonitor (Chaoborus) in Highly Acidic Lakes
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Section:Abstract
Biomonitor organisms can be used to estimate bioavailable contaminant concentrations provided that a reliable model exists between organism and environmental contaminant concentrations. We evaluate a recently proposed model designed to relate Cd concentrations in a proposed biomonitor, the insect Chaoborus, to free cadmium ion concentrations, [Cd2+], in lakes. In highly acidic metal-contaminated lakes, Cd concentrations in the biomonitor tend to be depressed despite the often high Cd2+ concentrations in these lakes. We test the hypothesis than one or several of the cations H+, Cu2+, Ni2+, and Zn2+, which also tend to be present in high concentrations in such lakes, compete with Cd2+ for biological uptake sites and thereby reduce Cd accumulation in the biomonitor. We show that to effectively relate Cd concentrations in the biomonitor to those in its environment, only competition from H+ needs to be taken into account, suggesting that H+ is the major competitor with Cd2+ at biological uptake sites and that the competitive effects of the other metal ions can be ignored. We also show that while it is best to treat the various species of Chaoborus separately, species can be pooled with only moderate loss of predictive power. In contrast to Cd, Chaoborus larvae could not be used to monitor the concentrations of either copper or zinc because the concentrations of these essential metals appear to be regulated by the larvae.
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This article has been cited by 10 ACS Journal articles (5 most recent appear below).
Assessment of Nickel Contamination in Lakes Using the Phantom Midge Chaoborus As a Biomonitor
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Dominic E. Ponton and Landis HareEnvironmental Science & Technology2009 43 (17), 6529-6534Nickel (Ni) can be present in concentrations of concern in waters near mining and industrial sites. We tested species of the phantom midge Chaoborus as a biomonitor for this trace metal by collecting water and Chaoborus larvae from 15 lakes located along ...
A Biodynamic Understanding of Dietborne Metal Uptake by a Freshwater Invertebrate
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Marie-Noële Croteau and Samuel N. LuomaEnvironmental Science & Technology2008 42 (5), 1801-1806Enriched stable isotopes allow characterizing dietborne Cu, Cd, and Ni uptake in a freshwater gastropod both in terms of biodynamics and membrane transport characteristics.
Heavy Metals and Stable Isotopes in a Benthic Omnivore in a Trophic Gradient of Lakes
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Cadmium Accumulation in Scenedesmus vacuolatus under Freshwater Conditions
Stefanie Töpperwien, Hanbin Xue, Renata Behra, and Laura SiggEnvironmental Science & Technology2007 41 (15), 5383-5388Cadmium Accumulation in Scenedesmus vacuolatus under Freshwater Conditions
Stefanie Töpperwien, Hanbin Xue, Renata Behra, and Laura SiggEnvironmental Science & Technology2007 41 (15), 5383-5388Cd accumulation in cultures of Scenedesmus vacuolatus, a freshwater alga, was investigated in water samples from freshwater systems (two hard- and one softwater system) and compared to accumulation from synthetic culture medium. The Cd accumulation in S. ...
A Field Experiment To Determine the Relative Importance of Prey and Water as Sources of As, Cd, Co, Cu, Pb, and Zn for the Aquatic Invertebrate Sialis velata
Louis Croisetière, Landis Hare, and André TessierEnvironmental Science & Technology2006 40 (3), 873-879A Field Experiment To Determine the Relative Importance of Prey and Water as Sources of As, Cd, Co, Cu, Pb, and Zn for the Aquatic Invertebrate Sialis velata
Louis Croisetière, Landis Hare, and André TessierEnvironmental Science & Technology2006 40 (3), 873-879We measured the relative importance of water and food as sources of the trace elements As, Cd, Co, Cu, Pb, and Zn for larvae of the benthic insect Sialis velata. To achieve this end, we first exposed its prey, the midge Chironomus riparius, to trace ...
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History
- Published In Issue May 01, 1998
- Received for review August 7, 1997
Revised manuscript received January 14, 1998
Accepted January 29, 1998
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