20.500.12556/RUL-148145 Diameter growth of European beech on carbonate a regional versus forest type perspective We studied the impacts of site, stand and tree variables on the diameter growth of beech trees (Fagus sylvatica L.) on carbonate bedrock and examined to what extent the regional diameter growth model can be used at the forest type level. Based on 12,193 permanent sampling plots (500 m$^2$ each) with 94,770 beech trees, we first developed a linear mixed-effect model of the periodic diameter increment at the regional level (Dinaric region, Slovenia, 1.7 thousand km$^2$). Subsequently, we parametrized the model for five forest types within the region (submontane, thermophilous, montane, upper montane and subalpine) and used a homogeneity-of-slopes model to test whether the covariates have different effects in the five forest types. The regional model suggested the positive impact of tree diameter (nonlinear), tree diameter diversity, mean diurnal temperature range and mean annual temperature and the negative impact of basal area, proportion of beech, inclination, rockiness and annual amount of precipitation. Stand basal area and the proportion of beech contributed > 50% of the total explained diameter increment variability, followed by tree diameter (44%), topographic (3%) and climatic variables (< 2%). The regional model was well transferable to forest types; the only variable with a significantly different effect in forest types was tree diameter. However, models at the forest type level differed with respect to the slopes and significance of several predictors, wherein coefficients for some predictors were even of opposite sign. Not all predictors from the regional model were included in the forest type models if predictor selection and model parameterization were performed independently for each forest type. Our study suggests that some growth characteristics of beech can be detected at the regional level only, while analyses at the forest type level can reveal significant differences in beech growth response to tree, stand and environmental variables. diameter increment Dinaric region mixed-efect model homogeneity-of-slopes model Fagus sylvatica vegetation belt Fagus sylvatica vegetacijski pas večanje premera Dinaridi model mešanega učinka model homogenosti pobočij true false true Angleški jezik Slovenski jezik Članek v reviji 2023-07-28 07:52:55 2023-07-28 07:53:05 2025-08-08 13:22:29 0000-00-00 00:00:00 2023 0 0 Str. 917-932 iss. 4 Vol. 142 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*6 1612-4677 10.1007/s10342-023-01562-z 149604099 s10342-023-01562-z.pdf s10342-023-01562-z.pdf 1 BC0F16EB067A805B4C0CDC90E6363D10 789f9ac578d6568b7242a98063b42e81b150b9855075a5af5192ea912019043b 8766ee1f-2d0b-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=172143 https://link.springer.com/article/10.1007/s10342-023-01562-z 1 40987319-2d0b-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=172142 Biotehniška fakulteta 0 0 0