Differences between intra- and inter-specific competition strategies in mixed stands account for higher productivity. The mechanisms of as they relate to stand structure remain poorly explored. Climatic effects have also been overlooked most approaches aimed at studying tree growth. These were investigated through the case study beech-oak mixtures France. A single-tree diameter-increment model was fitted data gathered from Laboratoire d'Etude des Ressources Forêt-Bois (LERFoB) network...

Natural regeneration-based silviculture has been increasingly regarded as a reliable option in sustainable forest management. However, successful natural regeneration is not always easy to achieve. Recently, new concerns have arisen because of changing future climate. To date, models proved helpful decision-making concerning regeneration. The implementation such into optimization routines promising approach providing managers with accurate tools for planning. In the present study, we...

Natural regeneration comprises different subprocesses, each of them driven by specific climatic and stand-related factors, which determine the success natural regeneration. The objective this study was to investigate seed availability maritime pine (Pinus pinaster Aiton). To meet objective, rain monitored for four levels stand density at experimental site Cuéllar, Spain, during a 10-year period. A generalized linear mixed-effects model fitted test effects variables on annual production rain....

Abstract The group selection cutting system provides a promising technique for transforming monospecific even-aged stands into uneven-aged, mixed stands. However, this has scarcely been used to regenerate Mediterranean shade-intolerant species. In study, we analyze the height increment patterns of Pinus pinaster seedlings emerging in naturally regenerated gaps. P. is pine species distributed throughout basin. An experimental trial was established 50-year-old (maritime pine) plantation...

Abstract In this paper, we present new dynamic top height models for 10 major species in Great Britain. These pure, even-aged stands replace the current, static height-age curves published 1980s, which are no longer reliable light of data that have been added over past decades. We followed generalized algebraic difference approach (GADA) to build and specifically focused on derived from Hessfeld IV Chapman–Richards base equations. selected a multi-asymptote polymorphic GADA version equation...

Studying intra-annual growth dynamics through a modelling approach has proved useful for characterizing differences in wood phenology between species and deviations from the expected tree due to climate change. The aim of this paper was determine climatic factors inter- intra-specific competition traits that drive secondary three Mediterranean naturally co-exist Spanish Northern Plateau (Pinus pinea L., Juniperus thurifera Quercus ilex subsp. ballota (Desf.) Samp.). For purpose, we obtained...

Abstract In forestry, the variable of interest is not always directly available from forest inventories. Consequently, practitioners have to rely on models obtain predictions this interest. This context leads hybrid inference, which based both probability design and model. Unfortunately, current analytical estimators for variance point estimator are mainly linear or nonlinear their use limited when model reaches a high level complexity. An alternative consists using resampling methods...

Abstract Question What are the conditions necessary for establishment and development of seedlings an early stage sapling community in old‐growth cloud forest? Cloud forests one most threatened ecosystems world; however, recruitment patterns these remain largely unknown. Location Forest, Northern Peruvian Andes. Methods We constructed a model through unconstrained technique non‐metric multidimensional scaling. related distribution saplings each species to distance from conspecific adult...

In forest inventories, there are many variables of interest that difficult to measure. Practitioners have rely on auxiliary and models obtain predictions these variables. such contexts, design-based or model-dependent inferences often ineffective hybrid estimators required. Because most now contain mixed effects, we investigated how the random effects residual errors affected in a context estimation. We first developed for different models. then tested through simulation study. Finally, were...

Skidding operations are thought to have negative impacts on soil emergence because they may increase compaction and reduce vegetation cover the soil’s organic matter content. We investigated whether what extent tree harvesting subsequent skidding initially altered seedling in two Mediterranean forests of Pinus nigra Arn. ssp. salzmannii (Spanish black pine) Cuenca Mountains (Spain). Our main objective was compare Spanish pine rate among skid trails, areas scarified by felled trees,...

In forestry, harvest models have become popular for forecasting thinning under business-as-usual scenarios. There are two binary processes involved in operations: (i) whether a plot is to be thinned and (ii) particular tree within that harvested. These can modeled using logistic regressions. The data used fit such come from forest inventories, where the observations not usually independent. Random effects deal with these correlations. However, fitting plot-level tree-level independently...

Abstract Scots pine (Pinus sylvestris L.) and larch (Larix spp.) are two species that could contribute to diversifying Ireland’s timber supply. However, there is little knowledge about their properties as well variation with age. The aim of this study investigate the structural (modulus elasticity, strength density) Irish-grown effect cambial age on grading. Structural-sized pieces were used for purpose, properties, knots ring width measured 158 250 larch, respectively. Characteristic values...

Abstract More and earlier thinning operations are expected in Sitka spruce planted forests Great Britain as a result of an increased demand for biomass faster growth driven by breeding. It is however unknown whether the current models, which were designed to predict volume adult trees, can provide unbiased predictions young individuals that likely be harvested future operations. The primary objective this study was answer question. To do this, we used retrospective data from destructive...