Exploitation of databases in polar research - Data evaluation and outputs
Vol.5,No.2(2015)
The increasing number of observations and floristic sample analyses provided by the Centre for Polar Ecology, Faculty of Science, University of South Bohemia in České Budějovice, Czech Republic (CPE), led to development of the sample database (SampleDTB). At present, the Sample DTB contains records on total of 318 samples from 135 sites. Total of 254 taxa at level of genera or species were observed. For database functionality tests, two datasets were selected. The first one consisted of samples collected by ALGO groups in frame of Polar Ecology course organized by the CPE in 2011-2014 (ALGO dataset). The second one consisted of samples collected in Bulgaria in 2013 (BG dataset). The ALGO dataset contains records on total of 188 samples from 94 sites. Total of 216 taxa (genera or species) were observed. The majority of habitats sampled were streams and the most frequently sampled communities were layer-forming communities like periphyton, epilithon and biofilms. The most dominant classes observed in ALGO dataset were diatoms and cyanobacteria. The unconstrained canonical analysisrevealed that the environment type significantly affected the taxonomical composition observed. In the BG dataset, 16 samples from 4 sites were recorded. Total of 40 taxa (genera or species) were observed. Majority of habitats sampled included streams and shallow pools and the communities sampled were restricted to periphyton, epiphyton and epilithon. Similarly to ALGO dataset, the most dominant classes in BG dataset were Cyanophyceae and diatoms. Due to low number of samples, no multivariate analysis was performed in the BG dataset. These exports and further analyses proved functionality of the SampleDTB database.
database; data utilisation; species diversity; ecology
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