Nitrogen fixation and diurnal changes of photosynthetic activity in Arctic soil crusts at different development stage

Nitrogen fixation and photosynthesis provided by microbial phototrophs (cyanobacteria and eukaryotic microalgae) are important processes occurring in Arctic soil crusts. Here, we describe and compare these processes in biological soil crusts from Central Svalbard at different stages of development....

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Bibliographic Details
Published in:European Journal of Soil Biology
Main Authors: Pushkareva, E., Kvíderová, J. (Jana), Šimek, M. (Miloslav), Elster, J. (Josef)
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Soil crust
Arctic
Photosynthetic activity
Svalbard
Online Access:https://doi.org/10.1016/j.ejsobi.2017.02.002
http://hdl.handle.net/11104/0271605
Description
Summary:Nitrogen fixation and photosynthesis provided by microbial phototrophs (cyanobacteria and eukaryotic microalgae) are important processes occurring in Arctic soil crusts. Here, we describe and compare these processes in biological soil crusts from Central Svalbard at different stages of development. The gradient from poorly-developed to well-developed soil crusts was accompanied by the changes in biovolume of microbial phototrophs, nitrogenase and photosynthetic activity. The lowest biovolume of microbial phototrophs was detected in poorly-developed soil crusts as a consequence of the initial stage of soil colonization.

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