The effects of decreasing heavy metal concentrations on the biota of Buttle Lake, Vancouver Island, British Columbia

Deniseger, John; Erickson, L.J.; Austin, A. P.; Roch, M.; Clark, Malcolm

doi:10.1016/0043-1354(90)90222-r

Cited by 74 publications

(36 citation statements)

References 11 publications

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“…In these studies, all of which have focused on fish, the degree of contamination has generally been as-Couillard et al sessed by measuring either dissolved metal concentrations (Roth and McCarter 1984;Deniseger et al 1990) or total sediment metal levels (Klaverkamp et al 199 1); neither measure is necessarily a good estimation of metal bioavailability.…”

Section: Methodsmentioning

confidence: 99%

“…Relatively few studies have dealt with relationships between metallothionein concentrations in indigenous organisms and environmental metal levels (Roth and McCarter 1984;Deniseger et al 1990;Hogstrand and Haux 1990;Klaverkamp et al 199 1). In these studies, all of which have focused on fish, the degree of contamination has generally been as-Couillard et al sessed by measuring either dissolved metal concentrations (Roth and McCarter 1984;Deniseger et al 1990) or total sediment metal levels (Klaverkamp et al 199 1); neither measure is necessarily a good estimation of metal bioavailability.…”

Section: Methodsmentioning

confidence: 99%

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Response of metallothionein concentrations in a freshwater bivalve (Anodonta grandis) along an environmental cadmium gradient

Couillard

Campbell

Tessier

1993

Limnology & Oceanography

104

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Surficial (oxic) sediments, overlying water, and specimens of the freshwater bivalve Anodonta grandis were collected by divers at 11 littoral lacustrine sites located along a geochemical gradient of pH, [Cd], Dl, and [Z n in an area influenced by mining and smelting activities. The molluscs were dissected (gills; 1 hepatopancreas; remaining tissues) and analyzed for Cd, Cu, Zn, and metallothioneins (MT). Tissue concentrations of MT in A. grandis varied between 100 and 440 nmol metal binding sites (g dry wt-l. Metallothionein levels in the gills, the remaining tissues, and the whole organism were significantly correlated (P < 0.01) with tissue Cd concentrations.In contrast, correlations between [MT] and tissue levels of Cu or Zn were weak or nonexistent. The intersite variations in MT concentrations were best related, not to total dissolved metal concentrations at the time of sampling, nor to extractable metal concentrations in the sediments, but to the free Cd2+ concentration at the sediment-water interface, as estimated from sediment-water sorptive equilibria. These observations suggest that Cd2' activity is the key environmental factor to which metallothionein levels in A. grandis are responding in the studied lakes. The mollusc condition indices (C.I. = 1,000 x total dry wt of flesh of the animals/total intervalval volume) deteriorated as Ld concentrations in the tissues increased.Freshwater and marine molluscs are recognized for their capacity to concentrate metals from their environment (Phillips 1980). Their tolerance of the resulting metal burdens has been attributed to the existence of an effective detoxification mechanism involving the trapping of the incoming metals by specific ligands present in the cytosol (Viarengo 1989). Possible candidates for this role include metallothioneins (MT), low-molecular-weight, cysteine-rich metal-binding proteins with high affinity for group IB and IIB metal ions. Stability constants measured in vitro for metal ions such as Cd2+, Cu2+, Hg2+, and Zn2+ are

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Response of metallothionein concentrations in a freshwater bivalve (Anodonta grandis) along an environmental cadmium gradient

Couillard

Campbell

Tessier

1993

Limnology & Oceanography

104

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“…Because of adsorption, hydrolysis, and co-precipitation, some portions of free metal ions stay dissolved in water and most of them get deposited in the sediment (Gaur et al, 2005). Heavy metal residues in contaminated habitats may accumulate in microorganisms, aquatic flora, and fauna, which, in turn, may enter into the human food chain and threaten the well-being of the residents around the polluted river (Cooke et al, 1990;Deniseger et al, 1990).…”

Section: Nhmentioning

confidence: 99%

Diversity change of microbial communities responding to zinc and arsenic pollution in a river of northeastern China

Zhao

Lei

et al. 2014

J. Zhejiang Univ. Sci. B

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Pollution discharge disturbs the natural functions of water systems. The environmental microbial community composition and diversity are sensitive key indicators to the impact of water pollutant on the microbial ecology system over time. It is meaningful to develop a way to identify the microbial diversity related to heavy metal effects in evaluating river pollution. Water and sediment samples were collected from eight sections along the Tiaozi River where wastewater and sewage were discharged from Siping City in northeastern China. The main pollutants contents and microbial communities were analyzed. As the primary metal pollutants, zinc (Zn) and arsenic (As) were recorded at the maximum concentrations of 420 and 5.72 μg/L in the water, and 1704 and 1.92 mg/kg in the sediment, respectively. These pollutants posed a threat to the microbial community diversity as only a few species of bacteria and eukaryotes with strong resistance were detected through denaturing gradient gel electrophoresis (DGGE). Acinetobacter johnsonii, Clostridium cellulovorans, and Trichococcus pasteurii were the dominant bacteria in the severely polluted areas. The massive reproduction of Limnodrilus hoffmeisteri almost depleted the dissolved oxygen (DO) and resulted in the decline of the aerobic bacteria. It was noted that the pollution reduced the microbial diversity but the L. hoffmeisteri mass increased as the dominant community, which led to the overconsuming of DO and anaerobic stinking water bodies. Water quality, concentrations of heavy metals, and the spatial distribution of microbial populations have obvious consistencies, which mean that the heavy metals in the river pose a serious stress on the microorganisms.

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“…The average concentration of zinc in muscle tissue of rainbow trout collected from several lakes used a s background sites w a s approximately 18 mg/kg dry weight (Densinger et al, 1990). These concentrations are slightly lower than the concentrations reported in muscle tissue samples collected in the site vicinity.…”

Section: Fish Tissuementioning

confidence: 71%

Baseline risk assessment of groundwater contamination at the uranium mill tailings site, near Gunnison, Colorado. Revision 2

1996

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The effects of decreasing heavy metal concentrations on the biota of Buttle Lake, Vancouver Island, British Columbia

Cited by 74 publications

References 11 publications

Response of metallothionein concentrations in a freshwater bivalve (Anodonta grandis) along an environmental cadmium gradient

Response of metallothionein concentrations in a freshwater bivalve (Anodonta grandis) along an environmental cadmium gradient

Diversity change of microbial communities responding to zinc and arsenic pollution in a river of northeastern China

Baseline risk assessment of groundwater contamination at the uranium mill tailings site, near Gunnison, Colorado. Revision 2

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