About: Microbial community structure and ecology of subglacial sediments in two polythermal Svalbard glaciers characterized by epifluorescence microscopy and PLFA     Goto   Sponge   Distinct   Permalink

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  • Životaschopné bakterie, sinice a řasy byly nalezeny v sedimentech dvou polytermálních ledovců na Špicberkách. Sedimenty byly studovány pomocí fluorescenční mikroskopie a PLFA analýzy. Subglaciální sedimenty měly vyšší pH, hrubozrnější strukturu, nižší množství živin a vody než nově odledněné půdy, sukcesně vyvinutější půdy a sediment kryokonitů. Odledněné půdy byly podobné subglaciálním půdám v měřených fyzikálně-chemických parametrech půdy a taky ve složení a biomase mikrobiálního společenstva. V subglaciálních a odledněných půdách byla nízká druhová diversita a nízká dostupnost organického substrátu pro mikroorganismy. Naše výsledky potvrzují doměnku, že populace mikroorganismů mohou přežívat v subglaciálních systémech a podílet se ne pozdější kolonizaci odledněných půd. (cs)
  • Viable bacteria, cyanobacteria and microalgae were detected in subglacial sediment from 2 polythermal glaciers in Svalbard using epifluorescence microscopy and PLFA analyses. The subglacial samples were of higher pH values, coarse texture and low WC, OM, organic carbonand nitrogen. Bacterial counts of 1.6x107 cells mg OM were found. Microalgae were also of low abundance (4.2 cells mg DW-1). Deglaciated soil were similar to subglacial sediment in physico-chemical properties and microbial structure and numbers, unlike soil from vegetated sites or cryoconite. In subglacial and deglaciated soil, relatively low diversity of organisms and low substrate availability was detected by PLFA analyses. Good accordance in microbial community structure assessments between epifluorescence microscopy and PLFA analyses was found. Our results suggest that the subglacial microbial populations can retain the ability to proliferate and give rise to active population when conditions become favorable.
  • Viable bacteria, cyanobacteria and microalgae were detected in subglacial sediment from 2 polythermal glaciers in Svalbard using epifluorescence microscopy and PLFA analyses. The subglacial samples were of higher pH values, coarse texture and low WC, OM, organic carbonand nitrogen. Bacterial counts of 1.6x107 cells mg OM were found. Microalgae were also of low abundance (4.2 cells mg DW-1). Deglaciated soil were similar to subglacial sediment in physico-chemical properties and microbial structure and numbers, unlike soil from vegetated sites or cryoconite. In subglacial and deglaciated soil, relatively low diversity of organisms and low substrate availability was detected by PLFA analyses. Good accordance in microbial community structure assessments between epifluorescence microscopy and PLFA analyses was found. Our results suggest that the subglacial microbial populations can retain the ability to proliferate and give rise to active population when conditions become favorable. (en)
Title
  • Microbial community structure and ecology of subglacial sediments in two polythermal Svalbard glaciers characterized by epifluorescence microscopy and PLFA
  • Microbial community structure and ecology of subglacial sediments in two polythermal Svalbard glaciers characterized by epifluorescence microscopy and PLFA (en)
  • Druhová diversita a ekologie mikrobiálních společenstev v subglaciálních sedimentech dvou polytermálních ledovců, charakterizovaná pomocí epifluorescenční mikroskopie a PLFA analýzy (cs)
skos:prefLabel
  • Microbial community structure and ecology of subglacial sediments in two polythermal Svalbard glaciers characterized by epifluorescence microscopy and PLFA
  • Microbial community structure and ecology of subglacial sediments in two polythermal Svalbard glaciers characterized by epifluorescence microscopy and PLFA (en)
  • Druhová diversita a ekologie mikrobiálních společenstev v subglaciálních sedimentech dvou polytermálních ledovců, charakterizovaná pomocí epifluorescenční mikroskopie a PLFA analýzy (cs)
skos:notation
  • RIV/60077344:_____/07:00307709!RIV08-AV0-60077344
http://linked.open.../vavai/riv/strany
  • 277;287
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP206/03/P024), P(KJB6005409), S, Z(AV0Z60050516), Z(AV0Z60170517), Z(MSM6007665801)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 433684
http://linked.open...ai/riv/idVysledku
  • RIV/60077344:_____/07:00307709
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • subglacial sediment; microbial community; PLFA (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [1AF4925B45A4]
http://linked.open...i/riv/nazevZdroje
  • Polar Biology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 30
http://linked.open...iv/tvurceVysledku
  • Elster, Josef
  • Šantrůčková, H.
  • Stibal, Marek
  • Šabacká, Marie
  • Kaštovská, Klára
  • Černá, B.
http://linked.open...n/vavai/riv/zamer
issn
  • 0722-4060
number of pages
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