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Ice algal bloom development on the surface of the Greenland Ice Sheet.
Williamson, C J; Anesio, A M; Cook, J; Tedstone, A; Poniecka, E; Holland, A; Fagan, D; Tranter, M; Yallop, M L.
Afiliación
  • Williamson CJ; Bristol Glaciology Centre, University of Bristol,12 Berkely Square, Bristol, BS8 1SS, UK.
  • Anesio AM; School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK.
  • Cook J; Bristol Glaciology Centre, University of Bristol,12 Berkely Square, Bristol, BS8 1SS, UK.
  • Tedstone A; Department of Geography, The University of Sheffield, Sheffield, S10 2TN, UK.
  • Poniecka E; Bristol Glaciology Centre, University of Bristol,12 Berkely Square, Bristol, BS8 1SS, UK.
  • Holland A; School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
  • Fagan D; Bristol Glaciology Centre, University of Bristol,12 Berkely Square, Bristol, BS8 1SS, UK.
  • Tranter M; School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK.
  • Yallop ML; Bristol Glaciology Centre, University of Bristol,12 Berkely Square, Bristol, BS8 1SS, UK.
FEMS Microbiol Ecol ; 94(3)2018 03 01.
Article en En | MEDLINE | ID: mdl-29444265
It is fundamental to understand the development of Zygnematophycean (Streptophyte) micro-algal blooms within Greenland Ice Sheet (GrIS) supraglacial environments, given their potential to significantly impact both physical (melt) and chemical (carbon and nutrient cycling) surface characteristics. Here, we report on a space-for-time assessment of a GrIS ice algal bloom, achieved by sampling an ∼85 km transect spanning the south-western GrIS bare ice zone during the 2016 ablation season. Cell abundances ranged from 0 to 1.6 × 104 cells ml-1, with algal biomass demonstrated to increase in surface ice with time since snow line retreat (R2 = 0.73, P < 0.05). A suite of light harvesting and photo-protective pigments were quantified across transects (chlorophylls, carotenoids and phenols) and shown to increase in concert with algal biomass. Ice algal communities drove net autotrophy of surface ice, with maximal rates of net production averaging 0.52 ± 0.04 mg C l-1 d-1, and a total accumulation of 1.306 Gg C (15.82 ± 8.14 kg C km-2) predicted for the 2016 ablation season across an 8.24 × 104 km2 region of the GrIS. By advancing our understanding of ice algal bloom development, this study marks an important step toward projecting bloom occurrence and impacts into the future.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eutrofización / Streptophyta Tipo de estudio: Prognostic_studies País/Región como asunto: America do norte / Europa Idioma: En Revista: FEMS Microbiol Ecol Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eutrofización / Streptophyta Tipo de estudio: Prognostic_studies País/Región como asunto: America do norte / Europa Idioma: En Revista: FEMS Microbiol Ecol Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido