DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagođeno pretraživanje po punom tekstu



ŠUMARSKI LIST 3-4/2018 str. 47     <-- 47 -->        PDF

ABUNDANCE OF BANK VOLE (Myodes glareolus Schreb.) AS AN INDICATIVE FACTOR OF DIFFERENT FOREST STRUCTURE AND MANAGEMENT IN THE DRAVA PLAIN REGION
BROJNOST ŠUMSKE VOLUHARICE (Myodes glareolus Schreb.) KAO INDIKATIVNI FAKTOR STRUKTURE ŠUMA I UTJECAJA ŠUMARSKOG GOSPODARENJA U ALUVIJALNOJ NIZINI DRAVE
Győző F. HORVÁTH, Dániel TÓTH
Summary
Differences in demographical patterns of the bank vole, Myodes glareolus Schreb. population, a frequent rodent species in the Drava plain region, were analysed through spatial and seasonal changes of survival and capture probability as well as through habitat dependence of abundance. As part of the Croatian-Hungarian interregional programme (DRAVA-INTERECO), small mammal population level monitoring was performed during 2007 applying the capture-mark-recapture method. Trapping sessions were implemented in three forest habitats with different vegetation structure, two sample areas in Lankoci forest, Hungary (protected old forest and reforested habitat) and one sample plot in Repaš forest, Croatia (habitat under forestry management) during a period of four months (July-October). The bank vole was an eudominant species in the three investigated habitats. The POPAN formulation of Jolly-Seber models was used to perform the comparative estimates of bank vole population traits. Based on model selection, the first two best candidate models supported our hypothesis that survival and abundance were influenced by forest age and structure. Our results confirmed that the bank vole is an appropriate indicator species to evaluate the population-level responses to the changes of forest structure and management.
Key words: Myodes glareolus, seasonality, population size, estimate, POPAN model
Introduction
Uvod
The remaining temperate zone deciduous forests are particularly sensitive to fragmentation, habitat reduction and different management processes. Because these ecosystems are species-rich communities, not only they represent higher taxonomic diversity due to their complex food chain system, but also have greater functional or ecological diversity (Angelstam et al., 1997; Bengtsson et al., 2000). These processes appear also along the green corridor of the Drava region where various types of forest (alluvial willow forest, floodland softwood groves, hardwood gallery forests) are present only in the form of smaller or somewhat larger pockets (Kevey et al., 2008).
Because of the clear need for the long-term preservation of biodiversity in managed forests, it is required to consider