National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Spatial distribution and morphometric features of blockfields in southern part of the Brdy Mts.
Hotový, Jan ; Křížek, Marek (advisor) ; Dlabáčková, Tereza (referee)
This paper deals with a topic of blockfields in southern part of the Brdy Mountains. The aim of this work is to describe an origin of the block fields generally, characterise their spatial distribution, morphometric and structure features, including their specific thermal regime. Another task is to characterise and classify the block fields in the southern part of Brdy Mts and compare them with the similar accumulations described in literature. 30 block fields were identified in this area. Morphometric analysis based on digital elevation model revealed that block fields in the southern part of Brdy Mts are sized roughly from 200 to 5 500 m2 and occur mostly at 725 - 750 m a. s. l. on steep or very steep slopes with a prevailing southern- -west and west exposure. An additional exploration of a bedrock confirmed that block fields here consist of conglomerate and silicite rocks. The results provide information about paleoclimate of Brdy Mts and their surroundings. Key words: block fields, Brdy Mountains, frost weathering, morphometric characteristics
Growth and individual variability of the water scorpion Nepa cinerea (Heteroptera: Nepomorpha: Nepidae)
VILIMOVSKÁ, Lenka
It this study morphometric characteristics and the growth of univoltine predatory water scorpion - Nepa cinerea were studied on the basis of data measured on freshly killed individuals, the same ethanol - fixed individuals and dried individuals. The growth of this species has an exponential character. By comparing the morphometric characteristics of freshly killed and fixed individuals was found that the ethanol fixation influenced mainly weight of all developmental stages and total abdominal ventral length of adults. The same was found for the comparison of morphometric characteristics of freshly killed individuals and dried individuals. Other studied dimensions were not significantly deformed even by fixation or drying. Reducing of individula demensions by the influence of fixation and drying was uneven at different developmental stages. Reliable dimension for differentiating of individual developmental stages fixed material and the collected dried material is especially the media length of the body. Dimensions of fixed individuals and dried individuals is not significantly different from dimensions of freshly killed individuals. This project was supported by grant GA CR P505/10/0096.

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