Is measuring of temperature fluctuations following bark beetle infestation in differentially managed forests objective?

Abstract

Proper management of woods infested by bark beetle-clearing infested trees to prevent spread of bark beetle, or leaving them to preserve biodiversity-is a hotly debated topic. Di erences in temperature regime between di erentially managed areas are often-used arguments in these discussions. Results from the eld measurements are confusing. Therefore, here we review previous studies and report our results of using thermal sensors in the eld to determine the factors that might a ect the di erences in temperature reported in previous papers. Our results indicate that the variability recorded in one particular habitat, dry forest, is associated with the speci c characteristics of the locality of each microsite/sensor. We conclude that it is important to consider not only the temperatures recorded but also describe microsites in detail in terms of vegetation structure, sunshine or numbers of trees per unit area.

Is the Šumava National Park changing into a desert? A mini-review

“…1). On the contrary, the soil beneath dead prostrate tree trunks is damp and the trunk provides shade suitable for the establishment of mosses, which provide favourable conditions for the growth of spruce seedlings (Šantrůčková et al 2010;Kindlmann et al 2012;Bílá 2018). There is not the same growth of forest in the Šumava NP as before the bark beetle outbreak, but under current conditions, succession will result in a green forest made up of trees of different ages (Jonášová and Prach 2004).…”

“…These results do not take into account changes in habitats over time. However, it is important to consider not only the temperatures recorded, but also the structure of the vegetation, its exposure to sunshine and the number of trees per unit area (Kindlmann et al 2012;Bílá 2018). Bečka and Beudert (2016) report an increase in summer air temperature of about 2 °C since 1978 in the Šumava NP, which is less than the temperature increase due to warming, presented in the IPCC report.…”