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Phylogeny and genetic diversity of two solitary African mole-rat genera \kur{Heliophobius} and \kur{Georychus}
UHROVÁ, Michaela
Two solitary genera of African mole-rats, Heliophobius and Georychus, had been for a long time considered as monotypic, yet some of the recent studies proposed species complexes. This thesis evaluates intrageneric relationships of both genera by using extended dataset of six nuclear markers and a large number of loci acquired during ddRADseq. Both datasets confirmed highly genetically structured populations within both genera. Nevertheless, while multilocus coalescent based on nuclear markers defined nine gene pools within Heliophobius and five within Georychus, processing of ddRADseq data revealed both, significantly finer (fineRADstructure) or broader (Infomap) structure. Based on the genetic evidence, we are inclined towards using two species within genus Heliophobius, comprised of northern and southern lineages separated by Eastern Arc Mountains, and one species for all evolutionary lineages of Georychus. The final taxonomic revision should await further morphological, ecological, or behavioural studies.
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"Instagrammable" Italy: Hyperreal Photography on Social Media
Uhrová, Michaela ; Marcelli, Miroslav (advisor) ; Řehořová, Irena (referee)
"Instagrammable" Italy: Hyperreal photography on social media This diploma thesis is dedicated to the phenomenon of authenticity and truthfulness of retouched digital travel photography on the social network Instagram. Social network users create a series of simulations and cause a shift of the meanings in the image by using predefined filters, masks, and other post-production techniques that transform the interpretation of reality to the point where they ultimately create hyperreality. According to Barthes, the literal meaning of the message is always accompanied by a connotation, while the two components of the message cannot be separated. In many cases, the connotations are inserted into the visual content by the creators themselves in order to achieve their purpose. In the analytical part of this work I focus on selected "instagrammable" travel photographs, which gradually lose contact with first-order reality due to interventions in the image and a shift of meanings and contexts. The aim of this work is to show how hyperreality is built in specific travel photographs that bloggers share on Instagram and what is actually required of travel photographs shared on a social network. Keywords: cyber-photography, post-production, Instagram, hyperreality, simulacrum
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Diverzita pelagických diplonem na vertikálním gradientu
UHROVÁ, Michaela
This Bachelor thesis focuses on the diversity of the recently discovered group of marine protists- diplonemids. Only a few species were known until the results from the Tara Oceans Expeditions revealed their extreme diversity and abundance in the global ocean ecosystem. Nowadays, they are considered to be the most diverse planktonic eukaryotes. The data available from the Tara Oceans expeditions indicate vertical stratification of eupelagonemids (group of diplonemids), but these studies are based only on limited sampling. The main objective of this thesis is to find and compare eupelagonemids from samples collected in Adriatic Sea in the whole dept spectrum using environmental sequencing methods.
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