Karri (Eucalyptus diversicolor F. Muell.) forest is an endemic type of southwest Western Australia (SWWA), noted for having the tallest trees in region, and providing commercial, ecological conservation value. To inform management aimed at optimising these values, a thinning trial was commenced 1992. The aim this study to evaluate effects on individual tree growth, stand level growth allometry ...

We monitored 15 radio-collared raccoons (Procyon lotor) on Davies Island in March 1987 May 1988 to determine the extent to which individual tree attributes or spatial configuration of plant associations (habitat types) across the landscape influenced den use. Of 1091 verified den sites, 428 were in tree cavities. Raccoon occurrence among 4 cover types differed from that expected based on the to...

Healthy hemlock trees, Tsuga canadensis (L.) Carrière, and hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), populations should favor retention and population growth of adelgid predators such as Laricobius nigrinus Fender (Coleoptera: Derodontidae) and Sasajiscymnus tsugae (Sasaji & McClure) (Coleoptera: Coccinellidae). Eastern hemlock trees between 15 and 38 cm diameter at ...

The discrete binary hierarchy (DBH) is a concept underlyingmany important issues in analysis of complex systems: knowledge structures, testand-search organization, evolutionary trees, taxonomy, data handling, etc. It appears that any DBH corresponds to an orthonormal basis of the Euclidean space related to the hierarchy leaves. The properties of these bases form a mathematical framework which c...

Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates are used to derive stand or large-area estimates of forest resources. Due to this hierarchy, it is imperative that individual tree attributes are measured with accuracy and precision. With the widespread use of different measurement tools, it i...

The proportion of tree growth allocated to stemwood is an important economic component of growth efficiency. Differences in growth efficiency between species, or between families within species, may therefore be related to how growth is proportionally allocated between the stem and other aboveground biomass components. This study examines genetically related differences in aboveground biomass a...

A method of estimating forest-fire fuel loads was developed using drones to collect information about the height and diameter-at-breast-height (DBH) individual trees. It conducted for forest fire prevention monitoring (Control, 20% thinned, 40% thinned area) located in Goseong-gun, Gangwon-do. Object-based images 3D-model red/green/blue band characteristics were superimposed select extract digi...

Individual tree detection (ITD) based forest inventory using the airborne laser scanning (ALS) data suffers from under-estimation problem, which arises mainly from the suppressed trees that are difficult to be detected from the air. Uncertainty of tree-level estimates, like tree height, diameter at breast height (DBH) and the modeled stem volume also contributes to the inaccuracy of the plot-le...

This contribution identifies spatial characteristics of tree diameter in a temperate forest in north-eastern China, based on a fully censused observational study area covering 500×600 m. Mark correlation analysis with three null hypothesis models was used to determine departure from expectations at different neighborhood distances. Tree positions are clumped at all investigated scales in all 37...