Impact of warming on Nostoc colonies (Cyanobacteria) in a wet hummock meadow, Spitsbergen

In order to simulate the warming effects on Arctic tundra, three open-top chambers (OTC) and three control cage-like structures (CCSs) with soil temperature and soil volumetric water content probes were installed in a wet hummock measow in Svalbard in 2009. Prolonged vegetative season was observed i...

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Bibliographic Details
Published in:Polish Polar Research
Main Authors: Elster, J. (Josef), Kvíderová, J. (Jana), Hájek, T. (Tomáš), Láska, K., Šimek, M. (Miloslav)
Format: Article in Journal/Newspaper
Language:English
Published: 2012
Subjects:
OTC
Online Access:https://doi.org/10.2478/v10183-012-0021-4
http://hdl.handle.net/11104/0218678
Description
Summary:In order to simulate the warming effects on Arctic tundra, three open-top chambers (OTC) and three control cage-like structures (CCSs) with soil temperature and soil volumetric water content probes were installed in a wet hummock measow in Svalbard in 2009. Prolonged vegetative season was observed in OTCs, however the temperature at hummock base was increased only by 0.3 °C in OTCs compared to CCSs. Photochemical activity and nitrogenase activity of Nostoc colonies did not differ significantly between OTCs and CCSs.