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Effects on nutrient...
Effects on nutrient regime in two recipients of nitrogen-rich mine effluents in northern Sweden
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- Chlot, Sara (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Widerlund, Anders (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Husson, Eva (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik,Luleå University of Technology
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- Öhlander, Björn (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Ecke, Frauke (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Luleå tekniska universitet,Geovetenskap och miljöteknik,Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07 Uppsala, Sweden,Institutionen för vatten och miljö,Luleå University of Technology
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(creator_code:org_t)
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- Elsevier BV, 2013
- 2013
- English.
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In: Applied Geochemistry. - : Elsevier BV. - 0883-2927 .- 1872-9134. ; 31, s. 12-24
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The question of the limiting nutrient(s) for production of phytoplankton and macrophytes was explored in two contrasting freshwater systems receiving N- and P-rich mine effluents from the Boliden and Kiruna mine sites, northern Sweden. For both sites, total N (TN), total P (TP) and TN:TP mass ratios in water, sediment and macrophytes were used to examine (1) spatial variations within the systems, (2) differences between the systems and (3) seasonal variations. The TN concentration from the discharge point at the Kiruna site was about seven times higher than at the Boliden discharge point, while the TP concentration was 10 times lower than in the discharge point at the Boliden site. The majority of the studied lakes showed elevated biomass of phytoplankton, with maximum values found in Lake Bruträsket (Boliden). Mining activities have affected the nutrient regime of the two recipients by contributing to elevated TN and TP concentrations and TN:TP mass ratios as well as elevated production of phytoplankton and macrophytes compared to the reference sites. Depending on the NH4 concentration in the effluent at the Boliden site, water column TN:TP mass ratios shifted from being >22, indicating P-deficiency, to between 9 and 22, indicating a transition from N- to P-deficiency (co-limitation). However, water column TN:TP mass ratios at the Kiruna site always indicated P-deficiency, while TN:TP mass ratios of macrophytes indicate that both sites may vary from N- to P-limitation. The study suggests that for the design of efficient monitoring programmes and remediation measures, it is important to consider the major N and P species in water, phytoplankton, sediment and macrophytes.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Keyword
- Applied Geology
- Tillämpad geologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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