Seasonal variation in mortality of brown trout (Salmo trutta) in an acidic aluminium-rich lake

Lydersen, Espen; Rukke, Nina W.A.; Jensen, Jannike G.B.; Kjelsberg, Birgitte M.; Tornsjø, Bente; Vogt, Rolf D.; Vøllestad, Asbjørn; Poléo, Antonio B.S.

doi:10.4081/jlimnol.2002.61

Cited by 7 publications

(11 citation statements)

References 31 publications

(43 reference statements)

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“…AlSO 4 þ complexes are the principal ones only when the sulfate ion concentration is high and the pH low (54.5); they are not as stable as Al-F complexes (Driscoll and Postek, 1995), e.g., AlF 2 þ , (AlF) 2 þ and AlF 6 3 À (Mitrović et al, 1996). The criterion for classifying the forms in which aluminium occurs in the aquatic environment is based on the molecular weight and the polymeric or monomeric nature of the molecules (Lydersen et al, 1990;Lydersen et al, 2002) (Figure 3).…”

Section: Aluminiummentioning

confidence: 99%

The speciation and physico-chemical forms of metals in surface waters and sediments

Namieśnik

Rabajczyk

2010

Chemical Speciation & Bioavailability

140

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Surface waters can be contaminated in many ways, e.g., by solutions and suspended matter. Moreover, insoluble substances in colloidal form, in suspension or adsorbed on solid bodies can dissolve in response to changing physical and chemical conditions and become a secondary source of surface water pollution, thereby endangering wildlife. In addition, if we take into account varying rates of flow, contaminants can be transported over considerable distances. Hydrological processes, which determine factors, such as the rate of sedimentation, also influence the quality of surface waters; bottom sediments can contain large quantities of accumulated organic and inorganic compounds, including heavy metals. The physical and chemical properties of aquatic ecosystems are characterized by a number of interdependent parameters. Hence, factors such as temperature, oxygen content and pH of a water body can alter the solubility of the salts present in it, the forms of occurrence of particular species, as well as their bioavailability and toxicity. Thus it is necessary to determine the various species of metals present in the different compartments of the aquatic ecosystem.

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Section: Aluminiummentioning

confidence: 99%

The speciation and physico-chemical forms of metals in surface waters and sediments

Namieśnik

Rabajczyk

2010

Chemical Speciation & Bioavailability

140

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“…A control (JM with no added Al) was also run. Aluminium concentrations were chosen to encompass levels non-acutely toxic to aquatic biota (Elangovan et al, 1997;Danilov and Ekelund, 2002;Lydersen et al, 2002). The Al concentrations were prepared in the absence and presence of 5 mgl À 1 of Si, added as Na 2 SiO 3 .…”

Section: Preparation Of Stock Culturesmentioning

confidence: 99%

Bioavailability and toxicity of aluminium in a model planktonic food chain (Chlamydomonas–Daphnia) at neutral pH

Quiroz-Vázquez¹,

Sigee²,

White³

2010

Limnologica - Ecology and Management of Inland Waters

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a b s t r a c tDissolved aluminium (Al) is generally at low concentrations in neutral freshwater due to its insolubility. However, a fall in pH resulting from acid deposition and mining alters the mobility of Al and so entry to adjacent neutral waters. The present study examines the environmental behaviour, cell-associated surface adsorption/absorption and toxicity of Al at neutral pH to the alga Chlamydomonas gigantea in the presence and absence of the key Al-binding ligand silica. We then examined transfer of Al from C. gigantea to the planktonic crustacean Daphnia pulex. Finally, the effect of Al on the elemental composition (and hence nutritional value) of the two organisms was compared to unexposed controls. C. gigantea increased the amount of Al in the algal culture medium. Binding of Al to extracellular glycoprotein is probably the reason why only one-third of the biosorbed Al was absorbed (accumulated) by C. gigantea. Aluminium concentrations between 50 and 500 mg l À 1 reduced growth of C. gigantea at 16 days exposure to the metal. Silica reduced biosorption, accumulation and toxicity of Al by C. gigantea. The concentration of Al in D. pulex fed Al-contaminated C. gigantea for 16 days did not differ from those fed alga grown in the absence of added Al. C. gigantea contaminated with Al contained less sulphur, magnesium, potassium and sodium although only sulphur fell in D. pulex subsequently fed the contaminated alga. Chloride, calcium, iron and silicon were significantly higher in D. pulex.

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“…Acid mine drainage may affect fish assemblages through both direct and indirect interactions. Fish assemblages in AMD-impacted reaches are directly impacted predominantly through heavy metal toxicity (Barry et al 2000, Lydersen et al 2002, disruption of ion regulation (Beaumont et al 2000), and reduction of benthic macroinvertebrate density (Scullion and Edwards 1980). My earlier investigations (Freund Chapter 1) determined both macroinvertebrate and fish bioassessment scores were greatly reduced in areas directly impacted by AMD.…”

Section: Introductionmentioning

confidence: 99%

Local and regional impairment of fish assemblages in a mined Appalachian watershed

Freund¹

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Multimetric indices based on fish and benthic macroinvertebrate assemblages are commonly used to assess the biological health of aquatic ecosystems. However, the response of biological indices to specific stressor levels is rarely known. I quantified the relative response of a fish-based index of biotic integrity (IBI) and a benthic macroinvertebrate-based index to acid mine drainage related stressors in the Cheat River watershed, West Virginia. Fish and benthic macroinvertebrate assemblage data (% taxon composition) were used to calculate Mid-Atlantic Highland Assessment Index of Biotic Integrity (MAHA-IBI) and West Virginia Stream Condition Index (WV SCI) scores for each site. Both MAHA-IBI and WV SCI scores were scaled by dividing all scores by the highest value observed in the watershed. Water chemistry was dominated by constituents indicative of AMD. Both fish and macroinvertebrate assemblages responded to water chemistry parameters and principal component analysis (PCA) factor scores that summarized covariance among water chemistry parameters. Macroinvertebrate assemblages were more responsive to chemical stressors from AMD than were fish assemblages. However, in many cases information from macroinvertebrate and fish multimetric indices provided complementary information, presumably because fish assemblages are responsive to regional conditions, and invertebrates are more responsive to local conditions. Results suggest that monitoring programs and prioritization of mine discharge treatment need to consider biological response to mining-related water chemistry impairment.

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Seasonal variation in mortality of brown trout (Salmo trutta) in an acidic aluminium-rich lake

Abstract: We have studied the seasonal variation in aluminium toxicity in caged brown trout (Salmo trutta), during one year (October 1994 to September 1995

Cited by 7 publications

References 31 publications

The speciation and physico-chemical forms of metals in surface waters and sediments

The speciation and physico-chemical forms of metals in surface waters and sediments

Bioavailability and toxicity of aluminium in a model planktonic food chain (Chlamydomonas–Daphnia) at neutral pH

Local and regional impairment of fish assemblages in a mined Appalachian watershed

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