The diploma thesis deals with the loss of wood biomass as a result of infestation of trees with carpenter ants (Camponotus spp.) and also with the definition of nest thermoregulation. The study was carried out in the area of Czech-Saxon Switzerland National Park. The aim of the study was to find out the volume of infested wood with carpenter ants and the temperature inside their nests.
The research itself was divided into two parts: the first part included measuring temperature in the nests, the second dealt with quantification of infested trees. In the first part of the research trees visibly infested with ants were chosen and temperature dataloggers installed. The data from the dataloggers were downloaded once in three months, in March, June and September. The observed trees were consequently felled and their trunks cut into logs about 20 centimeters long.
In the second part of the diploma thesis a rectangle about 3 hectares big was marked out in a forest for the purpose of getting the number of infested trees. The data about healthy and damaged trees in the middle of each area and damaged trees near the way were collected. Altogether five areas were chosen in five forest departments. These were spruce groves more than 60 years older.
The results show that temperatures were higher in the hollows inhabited by the ants than in the empty hollows.
The volume of damaged parts of felled trees is little. It reached the values of 0,11-0,89 m3. The volume in spruce groves corresponds to this result and was also irrelevant. It was 0,93-7,9 m3.
From the results of the research it is obvious that the negative effect of carpenter ants and its relation to the productive function of forests is often underestimated.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:257421 |
| Date | January 2016 |
| Creators | Trägnerová, Jana |
| Contributors | Holuša, Jaroslav, Lukášová, Karolina |
| Publisher | Česká zemědělská univerzita v Praze |
| 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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