Functional shifts in unvegetated, perhumid, recently-deglaciated soils do not correlate with shifts in soil bacterial community composition.

The Journal of Microbiology
Sarah R SattinDiana R Nemergut

Abstract

Past work in recently deglaciated soils demonstrates that microbial communities undergo shifts prior to plant colonization. To date, most studies have focused on relatively 'long' chronosequences with the ability to sample plant-free sites over at least 50 years of development. However, some recently deglaciated soils feature rapid plant colonization and questions remain about the relative rate of change in the microbial community in the unvegetated soils of these chronosequences. Thus, we investigated the forelands of the Mendenhall Glacier near Juneau, AK, USA, where plants rapidly establish. We collected unvegetated samples representing soils that had been ice-free for 0, 1, 4, and 8 years. Total nitrogen (N) ranged from 0.00 approximately 0.14 mg/g soil, soil organic carbon pools ranged from 0.6 approximately 2.3 mg/g soil, and both decreased in concentration between the 0 and 4 yr soils. Biologically available phosphorus (P) and pH underwent similar dynamics. However, both pH and available P increased in the 8 yr soils. Nitrogen fixation was nearly undetectable in the most recently exposed soils, and increased in the 8 yr soils to approximately 5 ng N fixed/cm(2)/h, a trend that was matched by the activity of the soil N-cy...Continue Reading

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Citations

Feb 15, 2013·The ISME Journal·Scott FerrenbergDiana R Nemergut
Oct 3, 2014·Proceedings. Biological Sciences·James A BradleyAlexandre M Anesio
Oct 12, 2010·Microbial Ecology·Laurent PhilippotEllen Kandeler
Jan 14, 2012·Extremophiles : Life Under Extreme Conditions·Marek StibalAlexandre M Anesio
Nov 4, 2015·Frontiers in Microbiology·Nathan A M ChrismasPatricia Sánchez-Baracaldo
Jun 21, 2014·Environmental Microbiology·Takahiro SegawaNozomu Takeuchi
Dec 14, 2011·Current Opinion in Biotechnology·Antonio GonzalezRob Knight
Jun 18, 2016·Extremophiles : Life Under Extreme Conditions·Júlia Margit AszalósAndrea K Borsodi
Jun 15, 2018·FEMS Microbiology Ecology·Maisie V NashPatricia Sánchez-Baracaldo
Feb 6, 2019·The Journal of Microbiology·Steven K Schmidt, Lara Vimercati
Apr 15, 2020·Environmental Microbiology·Kento IshiiSatoshi Tsuneda
Dec 21, 2020·Global Change Biology·Norine KhedimGentile Francesco Ficetola
Jul 17, 2012·Environmental Science & Technology·Ameet J PintoLutgarde Raskin

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