A review of the ecology, ecophysiology and biodiversity of microalgae in Arctic soil crusts

• Published in: Polar Biology
• Main Authors: Pushkareva, E., Johansen, J. R., Elster, J. (Josef)
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2016
• Subjects: Soil crust; Arctic; Cyanobacteria and eukaryotic microalgae; Tundra
• Online Access: https://doi.org/10.1007/s00300-016-1902-5; http://hdl.handle.net/11104/0268536

Biological soil crusts have been extensively studied in arid lands of temperate regions, particularly semi-arid steppes and warm deserts. Arctic soil crusts have received some attention, but they are far less studied than their temperate counterparts. While the tundra zone of Arctic regions has an abundant cover of lichens, mosses and low-growing vascular plants, the High Arctic semi-arid and arid deserts have a much reduced but still very significant cover of biological soil crust dominated by microalgae. This review discusses what is known about Arctic soil crusts with the intention of stimulating study of this sensitive ecosystem. Arctic soil crusts are considered to be one of the most extreme habitat types on earth. Low temperatures and lack of water associated with a wide spectrum of disturbances have a dramatic effect on chemical and physical soil ecological properties (salinity, pH, conductivity and gas content).