Abundance and diversity of microbial phototrophic communities (cyanobacteria and eukaryotic microalgae) were investigated at two localities in main mountain ranges of Ladakh (Tibetan Plateau and Eastern Karakoram), India. Samples were collected along a two representative altitudinal gradients at each locality (E Karkoram 4620 - 5100 m asl., Tibetan Plateau 5346 - 5833 m asl.) in alpine and subnival zones in the vicinity of cushion plant Thylacospermum caespitosum (Caryophyllaceae). At each altitude 6 soil samples were taken from below cushion and 6 samples from outside the cushion. The epifluorescent microscopy and DGGE-method were used to determine diversity and biomass of phototrophs in the studied soils. Physico-chemical analyses (pH, texture, organic matter, nitrogen, ammonia and phosphorus content, concentration of chlorophylls and carotenoids) were also performed on the samples. The effect of altitude, mountain ranges and T. caespitosum on the composition and biomass of phototrophs and physico-chemical parameters of soil was tested by multivariate redundancy analysis and variance partitioning procedure. This study shows that the semiarid and arid soil of high elevation in Ladakh Mts. is suitable place for the development of microbial phototrophic communities and is important part of the ecosystem. The...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:297593 |
| Date | January 2011 |
| Creators | Janatková, Kateřina |
| Contributors | Němcová, Yvonne, Hrouzek, Pavel |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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