This dataset has been developed during the A2 Action of the SelPiBio LIFE project (www.selpibio.eu). The main aim of this project is demonstrate the effects of two thinning regimes, selective and from below, on soil biodiversity in young black pine stands. To evaluate the effect of thinning on analysed pinewoods, eighteen monitoring areas of 1 ha each were designed and realized across two study areas in Tuscany (Central Italy), the Pratomagno mountain chain and the Monte Amiata (Fig.1). In each study area, 27 circular plots of 15 metres of radius were geo-referenced (3 for each monitoring area). All the included trees were measured and data were collected between 2015 and early 2016 to characterize the horizontal and vertical structure of studied forests.

This data set provides unique empirical data from triplets of Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) across Europe. Dendrometric variables are provided (Table 2) for 32 triplets, 96 plots, 7555 trees and 4695 core samples. These data contribute to our understanding of mixed stand dynamics.

We provided long-term stand and canopy structural data from permanent monitoring plots representative of three most diffuse temperate and Mediterranean forests, under different coppice management regimes. Periodic inventories were performed in the surveyed plots since the 70s. Annual litterfall production and its partitioning (leaf, woody, reproductive parts) and optical canopy measurements using the LAI-2000 Plant Canopy Anayzer were performed every year in these plots since the 90s. These data can be used for evaluating the influence of coppice management in the stand and canopy structure, the parametrization of radiative transfer models that require accurate ground truth data, as well as the calibration of high to medium resolution remotely-sensed data.

We performed replicated, repeated-measures data of height, diameter and vitality at tree level to allow analysis of the spatial and temporal structure and diversity of  a semi-natural mixed floodplain forest in Italy. Three inventories were performed in 1995, 2005 and 2016 in three ~1 ha plots with varying soil moisture regimes. The use of replicated, repeated-measures data rather than chronosequences allows the examination of true changes in spatial pattern processes through time in this forest type.

This intensive study plot is located in Villenave d’Ornon, near Bordeaux in southwestern France (44.788319 N, -0.577062 E). It includes the INRAE chestnut germplasm collection and all isolated trees located in the immediate surroundings (< 1 km from the INRAE research site). The germplasm collection is distributed in two nearby orchards. The first orchard was planted in 1970 and comprises 29 widely spaced trees on 2.3 ha while the second orchard was planted in 1990 and includes 211 trees on 3.5 ha. In contrast to the Asiatic chestnut species, the European chestnut is very vulnerable to blight and ink diseases originating from Asia (Gonthier and Robin 2019). Cross-breeding between Asiatic species and European chestnut has been carried out to select new tolerant hybrid cultivars (Barreneche et al. 2019), some of which have been massively planted for fruit production. Hence, the two orchards include different taxa: 117 C. sativa (European chestnut), 22 C. crenata (Japanese chestnut), 20 C. mollissima (Chinese chestnut) and 81 interspecific hybrids, including 56 C. sativa x C. crenata. In some cases, both parental trees and their offspring are found in the orchards. Most trees are grafted on both rootstocks: Marsol (CA07) or Maraval (CA74). Pollination and hence pollen limitation are still poorly understood in chestnuts (Larue et al. 2021a).

This genomic dataset provides highly variable SNP markers from georeferenced natural Quercus petraea (Matt.) Liebl. populations collected in Bulgaria, Hungary, Romania, Serbia, Bosnia and Herzegovina, Kosovo and Albania.

The TreeTrace_Douglas database includes images and measurements at several steps of the processing of Douglas fir logs from the sawmill logyard to the machine grading and destructive testing of boards. A total of 52 long logs, 156 short logs, 208 wood discs and 346 boards were analysed. The image data includes RGB images of log ends and board ends, RGB images and CT slices of strips, a set of images of the boards (RGB, laser and X-rays) obtained with an industrial board grading machine. The measurements include wood local density, growth ring widths, pith and board location in the logs, heartwood and sapwood areas, mechanical properties of each board obtained by vibratory and static testing, and visual grading of the boards.

The dataset contains individual and georeferenced tree height from a network of 9 common gardens of Pinus pinea L. planted between years 1993 and 1997 and located in France and Spain.

The dataset provides digital dendrometer measurements on stem circumference of irrigated and non-irrigated Pinus pinea trees. Data were obtained in a xeric non-native habitat of central Chile. Forest mensuration were hourly collected from six adult trees during a growth year.

This data set provide valuable information about forest ecosystems in Pinus halepensis and Pinus sylvestris plantations in Spain. An array of 74 soil, climatic, physiographic and stand variables from 32 plots in P. halepensis plantations and 77 variables from 35 plots in P. sylvestris plantations are provided.