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Stream water geoche...
Stream water geochemistry of boron and boron isotopes in a small boreal catchment affected by a major forest fire
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- Nordblad, Fredrik (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Rodushkin, Ilya (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik,ALS Scandinavia AB, Aurorum 10, S-977 75 Luleå, Sweden
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- Engström, Emma (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik,ALS Scandinavia AB, Aurorum 10, S-977 75 Luleå, Sweden
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- Ecke, Frauke (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Öhlander, Björn (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Ingri, Johan (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Geochimica et Cosmochimica Acta. - 0016-7037 .- 1872-9533. ; 73:13, Supp. S, s. A952-
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Previous research [1] has suggested that the boron (B) isotope system has a potential to be used as a tracer for detecting historic wood fire events. It was hypothesized that highly elevated B concentrations in sediments of a lake, accompanied by an enrichment of 10B, were a result of an urban wood fire event in the 19th century. The δ11B decrease in these sediments exceeded 9 ., coinciding with a peak in the B concentration.To evaluate this hypothesis, seasonal isotopic pattern of boron (B) was investigated during spring and summer 2007 in a small stream draining a boreal forest area which was severely burnt in a major forest fire in the summer of 2006. Dissolved (< 0.22 µm) boron concentrations of the burnt area were significantly higher compared to a non-burnt reference stream, while 11B/10B ratios were significantly lower. Dissolved δ11B differences between the reference and the burnt area stream were found to be -9 to -22 .. We interpret the elevated B concentrations, accompanied by enrichment of 10B, in the burnt stream as wood and plant ash leaching of biogenic B from the burnt forest by surface run-off. Our results suggest that a boreal forest fire event significantly increases the leached amount of isotopically lighter B in the dissolved phase of stream run-off.[1] Peltola & Åström (2006), Appl. Geochem. 21 (2006) 941-948.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Nyckelord
- Landskapsekologi
- Landscape Ecology
- Applied Geology
- Tillämpad geologi
Publikations- och innehållstyp
- vet (ämneskategori)
- art (ämneskategori)
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