Were analyzed the growth and relationship with soil fertility of genetic materials Eucalyptus spp. planted in a non-traditional eucalyptus forestry region Brazil. Five were selected, two seminal: urophylla E. pellita three clones: GFMO27, I224, H13, experimental plots completely randomized design. The diameter at breast height (DBH) total measured; basal area dendrometric variables calculated, ...

A handheld mobile laser scanning (HMLS) approach to forest inventory surveying allows virtual reconstructions of forest stands and extraction of key structural parameters from beneath the canopy, significantly reducing survey time when compared against static laser scan and fieldwork methods. A proof of concept test application demonstrated the ability of this technique to successfully extract ...

Multi-trait multi-environment (MTME) models were fitted to eucalyptus breeding trials data assess residual variance structure, genetic stability and adaptability. To do so, 215 clones evaluated in a randomized complete block design with 30 replicates one plant per plot four environments. At 36 months of age, tree diameter at breast height (DBH) pilodyn penetration (PP) measured. Two MTME fitted...

we investigated the relations among infection intensity of european mistletoe (viscum album l.) with host tree features in nour forest park, located in caspian forests in north of iran. the number of 30 circular plots with an area of 0.1 ha were sampled in all places have an aggregation of infested trees. parameters including dbh, height, distance to stand edge, distance to conspecific tree, ba...

Tree growth in Korean red pine (Pinus densiflora, hereafter Pd), white koraiensis, Pk), and Japanese larch (Larix kaempferi, Lk) was modeled using Logistic, Korf, Gompertz, Chapman-Richards, Weibull equations stem analysis data from sample trees: 38 trees for Pd, 46 Pk, 45 Lk. The models were fitted to the total increment of tree size variables, diameter at breast height (DBH), height, basal ar...

Beech bark disease (BBD) is a significant threat to forests of North America and the impact BBD on radial growth in American beech substantial. We developed novel hierarchical Bayesian (HB) model simultaneously dynamics, tree growth, interaction two. Our can be adapted both emerging more mature forest–pathogen systems aid ecosystem loss predictions. Long-term data from single site minimized pot...

Few studies have evaluated the application of biochar to forest ecosystems and their responses under field conditions. We manually spread grounded on floor, at rates 0 (control), 5, 10 Mg ha−1 (C0, C5 C10, respectively), an oak in central Japan test effects tree growth productivity. The relative rate diameter breast height (dbh) canopy trees (dbh > 20 cm) significantly increased C10 compared...

Although Eptesicus fuscus (Big Brown Bat) has been widely studied, information on tree-roosting in forests by males is rare, and little information is available on tree roosting in the southeastern United States. Our objectives were to characterize diurnal summer roosts, primarily for male Big Brown Bats, and to determine relationships between forest structure and roost selection. We quantifi e...

The management of stand structure and the protection species diversity are crucial to forest ecosystem service functions. Changbai Mountain is one three major regions in Northeast China, understanding characteristics allometric relationship between variables correlation factors basis for achieving effective ecological function improvement. In this study, typical deciduous broad-leaved mixed con...

Quercus mongolica secondary forest is widely distributed in the northeast of China, but it usually has low productivity, unstable structure, poor health, and biodiversity. Diameter a tree variable that commonly used for growth measurement, to provide basis management decision. Two level generalized linear mixed effects individual diameter model were developed using data from two times surveys 1...