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Chemical and isotopic switching within the subglacial environment of a high Arctic glacier.

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Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. / Wynn, Peter M.; Hodson, Andrew; Heaton, Tim H. E.
In: Biogeochemistry, Vol. 78, No. 2, 2006, p. 173-193.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wynn, PM, Hodson, A & Heaton, THE 2006, 'Chemical and isotopic switching within the subglacial environment of a high Arctic glacier.', Biogeochemistry, vol. 78, no. 2, pp. 173-193. https://doi.org/10.1007/s10533-005-3832-0

APA

Wynn, P. M., Hodson, A., & Heaton, T. H. E. (2006). Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. Biogeochemistry, 78(2), 173-193. https://doi.org/10.1007/s10533-005-3832-0

Vancouver

Wynn PM, Hodson A, Heaton THE. Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. Biogeochemistry. 2006;78(2):173-193. doi: 10.1007/s10533-005-3832-0

Author

Wynn, Peter M. ; Hodson, Andrew ; Heaton, Tim H. E. / Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. In: Biogeochemistry. 2006 ; Vol. 78, No. 2. pp. 173-193.

Bibtex

@article{39bd0303768d42b69f4ef6a87932c17e,
title = "Chemical and isotopic switching within the subglacial environment of a high Arctic glacier.",
abstract = "Natural environmental isotopes of nitrate, sulphate and inorganic carbon are discussed in conjunction with major ion chemistry of subglacial runoff from a High Arctic glacier, Midre Lov{\'e}nbreen, Svalbard. The chemical composition of meltwaters is observed to switch in accordance with subglacial hydrological evolution and redox status. Changing rapidly from reducing to oxidizing conditions, subglacial waters also depict that 15N/14N values show microbial denitrification is an active component of nutrient cycling beneath the glacier. 18O/16O ratios of sulphate are used to elucidate mechanisms of biological and abiological sulphide oxidation. Concentrations of bicarbonate appear to be governed largely by the degree of rock:water contact encountered in the subglacial system, rather than the switch in redox status, although the potential for microbiological activity to influence ambient bicarbonate concentrations is recognised. Glaciers are therefore highlighted as cryospheric ecosystems supporting microbial life which directly impacts upon the release of solute through biogeochemically mediated processes.",
keywords = "Isotopes, Microbial, Redox status, Subglacial",
author = "Wynn, {Peter M.} and Andrew Hodson and Heaton, {Tim H. E.}",
year = "2006",
doi = "10.1007/s10533-005-3832-0",
language = "English",
volume = "78",
pages = "173--193",
journal = "Biogeochemistry",
issn = "1573-515X",
publisher = "SPRINGER",
number = "2",

}

RIS

TY - JOUR

T1 - Chemical and isotopic switching within the subglacial environment of a high Arctic glacier.

AU - Wynn, Peter M.

AU - Hodson, Andrew

AU - Heaton, Tim H. E.

PY - 2006

Y1 - 2006

N2 - Natural environmental isotopes of nitrate, sulphate and inorganic carbon are discussed in conjunction with major ion chemistry of subglacial runoff from a High Arctic glacier, Midre Lovénbreen, Svalbard. The chemical composition of meltwaters is observed to switch in accordance with subglacial hydrological evolution and redox status. Changing rapidly from reducing to oxidizing conditions, subglacial waters also depict that 15N/14N values show microbial denitrification is an active component of nutrient cycling beneath the glacier. 18O/16O ratios of sulphate are used to elucidate mechanisms of biological and abiological sulphide oxidation. Concentrations of bicarbonate appear to be governed largely by the degree of rock:water contact encountered in the subglacial system, rather than the switch in redox status, although the potential for microbiological activity to influence ambient bicarbonate concentrations is recognised. Glaciers are therefore highlighted as cryospheric ecosystems supporting microbial life which directly impacts upon the release of solute through biogeochemically mediated processes.

AB - Natural environmental isotopes of nitrate, sulphate and inorganic carbon are discussed in conjunction with major ion chemistry of subglacial runoff from a High Arctic glacier, Midre Lovénbreen, Svalbard. The chemical composition of meltwaters is observed to switch in accordance with subglacial hydrological evolution and redox status. Changing rapidly from reducing to oxidizing conditions, subglacial waters also depict that 15N/14N values show microbial denitrification is an active component of nutrient cycling beneath the glacier. 18O/16O ratios of sulphate are used to elucidate mechanisms of biological and abiological sulphide oxidation. Concentrations of bicarbonate appear to be governed largely by the degree of rock:water contact encountered in the subglacial system, rather than the switch in redox status, although the potential for microbiological activity to influence ambient bicarbonate concentrations is recognised. Glaciers are therefore highlighted as cryospheric ecosystems supporting microbial life which directly impacts upon the release of solute through biogeochemically mediated processes.

KW - Isotopes

KW - Microbial

KW - Redox status

KW - Subglacial

U2 - 10.1007/s10533-005-3832-0

DO - 10.1007/s10533-005-3832-0

M3 - Journal article

VL - 78

SP - 173

EP - 193

JO - Biogeochemistry

JF - Biogeochemistry

SN - 1573-515X

IS - 2

ER -