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Microbes influence the biogeochemical and optical properties of maritime Antarctic snow

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Microbes influence the biogeochemical and optical properties of maritime Antarctic snow. / Hodson, Andrew; Nowak, A; Cook, Joseph M; Sabacka, Marie; Wharfe, ES; Pearce, DA; Convey, Peter; Viera, G.

In: Journal of Geophysical Research: Biogeosciences, Vol. 122, No. 6, 17.06.2017, p. 1456-1470.

Research output: Contribution to journalArticle

Harvard

Hodson, A, Nowak, A, Cook, JM, Sabacka, M, Wharfe, ES, Pearce, DA, Convey, P & Viera, G 2017, 'Microbes influence the biogeochemical and optical properties of maritime Antarctic snow', Journal of Geophysical Research: Biogeosciences, vol. 122, no. 6, pp. 1456-1470. https://doi.org/10.1002/2016JG003694

APA

Hodson, A., Nowak, A., Cook, J. M., Sabacka, M., Wharfe, ES., Pearce, DA., ... Viera, G. (2017). Microbes influence the biogeochemical and optical properties of maritime Antarctic snow. Journal of Geophysical Research: Biogeosciences, 122(6), 1456-1470. https://doi.org/10.1002/2016JG003694

Vancouver

Hodson A, Nowak A, Cook JM, Sabacka M, Wharfe ES, Pearce DA et al. Microbes influence the biogeochemical and optical properties of maritime Antarctic snow. Journal of Geophysical Research: Biogeosciences. 2017 Jun 17;122(6):1456-1470. https://doi.org/10.1002/2016JG003694

Author

Hodson, Andrew ; Nowak, A ; Cook, Joseph M ; Sabacka, Marie ; Wharfe, ES ; Pearce, DA ; Convey, Peter ; Viera, G. / Microbes influence the biogeochemical and optical properties of maritime Antarctic snow. In: Journal of Geophysical Research: Biogeosciences. 2017 ; Vol. 122, No. 6. pp. 1456-1470.

Bibtex

@article{73a554173ff6472f862b8c16bbb67a4c,
title = "Microbes influence the biogeochemical and optical properties of maritime Antarctic snow",
abstract = "Snowmelt in the Antarctic Peninsula region has increased significantly in recent decades, leading to greater liquid water availability across a more expansive area. As a consequence, changes in the biological activity within wet Antarctic snow require consideration if we are to better understand terrestrial carbon cycling on Earth's coldest continent. This paper therefore examines the relationship between microbial communities and the chemical and physical environment of wet snow habitats on Livingston Island of the maritime Antarctic. In so doing, we reveal a strong reduction in bacterial diversity and autotrophic biomass within a short (<1 km) distance from the coast. Coastal snowpacks, fertilized by greater amounts of nutrients from rock debris and marine fauna, develop obvious, pigmented snow algal communities that control the absorption of visible light to a far greater extent than with the inland glacial snowpacks. Absorption by carotenoid pigments is most influential at the surface, while chlorophyll is most influential beneath it. The coastal snowpacks also indicate higher concentrations of dissolved inorganic carbon and CO2 in interstitial air, as well as a close relationship between chlorophyll and dissolved organic carbon (DOC). As a consequence, the DOC resource available in coastal snow can support a more diverse bacterial community that includes microorganisms from a range of nearby terrestrial and marine habitats. Therefore, since further expansion of the melt zone will influence glacial snowpacks more than coastal ones, care must be taken when considering the types of communities that may be expected to evolve there.",
author = "Andrew Hodson and A Nowak and Cook, {Joseph M} and Marie Sabacka and ES Wharfe and DA Pearce and Peter Convey and G Viera",
year = "2017",
month = "6",
day = "17",
doi = "10.1002/2016JG003694",
language = "English",
volume = "122",
pages = "1456--1470",
journal = "Journal of Geophysical Research: Biogeosciences",
issn = "2169-8953",
publisher = "American Geophysical Union",
number = "6",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Microbes influence the biogeochemical and optical properties of maritime Antarctic snow

AU - Hodson, Andrew

AU - Nowak, A

AU - Cook, Joseph M

AU - Sabacka, Marie

AU - Wharfe, ES

AU - Pearce, DA

AU - Convey, Peter

AU - Viera, G

PY - 2017/6/17

Y1 - 2017/6/17

N2 - Snowmelt in the Antarctic Peninsula region has increased significantly in recent decades, leading to greater liquid water availability across a more expansive area. As a consequence, changes in the biological activity within wet Antarctic snow require consideration if we are to better understand terrestrial carbon cycling on Earth's coldest continent. This paper therefore examines the relationship between microbial communities and the chemical and physical environment of wet snow habitats on Livingston Island of the maritime Antarctic. In so doing, we reveal a strong reduction in bacterial diversity and autotrophic biomass within a short (<1 km) distance from the coast. Coastal snowpacks, fertilized by greater amounts of nutrients from rock debris and marine fauna, develop obvious, pigmented snow algal communities that control the absorption of visible light to a far greater extent than with the inland glacial snowpacks. Absorption by carotenoid pigments is most influential at the surface, while chlorophyll is most influential beneath it. The coastal snowpacks also indicate higher concentrations of dissolved inorganic carbon and CO2 in interstitial air, as well as a close relationship between chlorophyll and dissolved organic carbon (DOC). As a consequence, the DOC resource available in coastal snow can support a more diverse bacterial community that includes microorganisms from a range of nearby terrestrial and marine habitats. Therefore, since further expansion of the melt zone will influence glacial snowpacks more than coastal ones, care must be taken when considering the types of communities that may be expected to evolve there.

AB - Snowmelt in the Antarctic Peninsula region has increased significantly in recent decades, leading to greater liquid water availability across a more expansive area. As a consequence, changes in the biological activity within wet Antarctic snow require consideration if we are to better understand terrestrial carbon cycling on Earth's coldest continent. This paper therefore examines the relationship between microbial communities and the chemical and physical environment of wet snow habitats on Livingston Island of the maritime Antarctic. In so doing, we reveal a strong reduction in bacterial diversity and autotrophic biomass within a short (<1 km) distance from the coast. Coastal snowpacks, fertilized by greater amounts of nutrients from rock debris and marine fauna, develop obvious, pigmented snow algal communities that control the absorption of visible light to a far greater extent than with the inland glacial snowpacks. Absorption by carotenoid pigments is most influential at the surface, while chlorophyll is most influential beneath it. The coastal snowpacks also indicate higher concentrations of dissolved inorganic carbon and CO2 in interstitial air, as well as a close relationship between chlorophyll and dissolved organic carbon (DOC). As a consequence, the DOC resource available in coastal snow can support a more diverse bacterial community that includes microorganisms from a range of nearby terrestrial and marine habitats. Therefore, since further expansion of the melt zone will influence glacial snowpacks more than coastal ones, care must be taken when considering the types of communities that may be expected to evolve there.

U2 - 10.1002/2016JG003694

DO - 10.1002/2016JG003694

M3 - Article

VL - 122

SP - 1456

EP - 1470

JO - Journal of Geophysical Research: Biogeosciences

JF - Journal of Geophysical Research: Biogeosciences

SN - 2169-8953

IS - 6

ER -