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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Algae and cyanobacteria colonizing toxic soils on coal-mining dumps
 HRČKOVÁ, Kristýna
Species composition of soil algal and cyanobacterial communities was investigated in thirteen sites of different toxicity of spoil material on dumps in the Sokolov mining area (Czech Republic). The adaptation ability of various algal and cyanobacterial species to live in toxic environment and the effect of different amendments (wooden coal, organic matter, dolomitic limestone) of toxic soils were tested both in laboratory and field experiments. According to results, species composition corresponded to environmental characteristic (pH, conductivity, substrate type). Some green unicellular algae grew successfully in extracts from the most toxic substrate and seemed to be well adapted to low pH conditions. Results indicate that increase of pH is a basic precondition for the establishment of more diverse and abundant algal flora in highly acidic sites.
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Vliv kultivačních podmínek na kryoprezervaci půdních řas a sinic
 Lukešová, Alena
Fundamental principles of both conservative and vitrification cryopreservation methods are presented, and factors affecting cryopreservation of algae and cyanobacteria are summarized. These factors include factors connected with the cryopreservation process itself as well as factors connected with pre- and post-cryopreservation manipulation with samples. Attention is paid to cultivation conditions, mainly to the temperature in the context of application of cold acclimation before cryopreservation. Both literature data and our experience indicate that the response of soil algae and cyanobacteria to particular factors is species or strain specific and optimization of condition can enhance post-cryopreservation viability of cryopreservation recalcitrant strain.
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