Data for: Species mixture increases production partitioning to belowground in a natural boreal forest
Contributors: Han Chen, Praveen Kumar, Zilong Ma, Bilei Gao
... This dataset is the raw data containing information such as PlotID, Tree ID, DBH and Height of each tree, soil nutrient, production of understorey vegetation, fine roots and litterfall of all 27 plots included in our analysis.
Data for: Recruitment into the seedling bank of an undisturbed Mediterranean pinewood: increasing forest resistance to changing climates
Contributors: Pedro Antonio Tíscar
... Excel file with research data
Data for: Not just about the trees: Key role of mosaic-meadows in restoration of ponderosa pine ecosystems
Contributors: Megan Matonis, Daniel Binkley
... This dataset includes understory plant cover by species in 1-m^2 quadrats, depth of organic horizon, canopy cover, and distance of plots from overstory trees for 330 quadrats across six ponderosa pine stands in Colorado. Five of our research sites were thinned between 2010 and 2013, and the sixth site, located on the Manitou Experimental Forest in the central Front Range, had not been treated since a heavy selective harvest of large-diameter ponderosa pine between 1880 and 1886. We measured understory conditions along 8 to 12 transects per stand in mosaic-meadows that were created or expanded by recent tree removal. We sampled mosaic-meadows at the Manitou Experimental Forest that contained stumps from selective harvesting in the 1880s. We sampled understory vegetation and abiotic conditions in 1-m^2 quadrats at 5-m increments along each transect, with 5-7 quadrats per transect. We made slight adjustments to the location of quadrats (+/- 2 m) to avoid highly disturbed skid trails or areas with >33% cover of rocks or heavy slash. Cover of understory vegetation was estimated by species unless vegetative characteristics were insufficient for species-level identification. We followed the PLANTS database (USDA NRCS 2015) for nomenclature. We measured depth of the O horizon at nine evenly spaced locations within each quadrat, and we estimated canopy cover above each quadrat using a spherical densitometer in the four cardinal directions. Time constraints prohibited us from sampling O-horizon depth and canopy cover at UncMesas. We measured the distance from each quadrat to the bole of the nearest overstory tree (dbh ≥10 cm). We focused on distance from overstory trees rather than a neighborhood index (e.g., Hegyi index) because distance is easier to interpret and translate into management implications than derived variables that combine distance and diameter.
Data for: Dynamics of detrital carbon pools following harvesting of a humid eastern Canadian balsam fir boreal forest
Contributors: Évelyne Thiffault, yves bergeron, Alexis Achim, Fanny Senez-Gagnon, David Paré
... Carbon stocks (expressed in tonnes of C per hectare) both above- and below-ground, in balsam fir-white birch stands of various ages originating from clearcut harvest, located in Forêt Montmorency, Quebec (Canada). Field protocol can be downloaded at: https://scf.rncan.gc.ca/publications?id=32317&lang=fr_CA
Data for: Ecological effects and effectiveness of silvicultural restoration treatments in whitebark pine forests
Contributors: Colin Maher, Anna Sala, Cara Nelson, Andrew Larson
... Data and associated R code scripts to perform the intervention detection method we used to detect growth releases and suppressions in whitebark pine trees in silvicultural restoration treatments. The intervention detection source code is provided here to allow use or modification of this method by other researchers. The method is designed to work with tree ring time series data. To run our analysis, place all files provided here into a single folder and run the "Intervention detection core execution code.r" script in the R environment.
Data for: The impact of spatial isolation and local habitat conditions on colonization of recent forest stands by ectomycorrhizal fungi
Contributors: Margaux Boeraeve, Nele Mullens, Kris Vandekerkhove, Olivier Honnay, Arno Thomaes, Hans Jacquemyn, Luc De Keersmaeker
... In this study, we selected 17 recently established (between 18 and 45 years old) forest stands and nine ancient forest stands (continuous forest land use since at least 1775) across Flanders (Northern Belgium). Nine of the recent forest stands were adjacent to ancient forest, and 8 were isolated from ancient forests (minimum, median and maximum distance from ancient forest: respectively 219, 1901 and 7605 m). The recent forest stands were all homogeneous stands of Quercus robur planted on former agricultural land, while the tree layer of the ancient forest stands was dominated by Q. robur, with admixtures of other tree species (Acer pseudoplatanus, Betula pendula, Castanea sativa, Fagus sylvatica, Tilia sp. and Q. rubra). In each stand, a 10x10m plot was established in such a way that only Q. robur was present in and around the plot. In each plot, 10 soil cores were randomly taken with a narrow-bladed gouge auger (diameter 3 cm). The F, H and A horizon, depth 0-15 cm were collected. The samples were pooled in two composite soil samples (five soil cores pooled in one sample, resulting in two samples per plot). Roots from oak (Quercus robur) were isolated from all samples, brushed to remove remaining soil particles and 0.25 g of root per sample was used to extract DNA using the Power Soil DNA Isolation Kit. After DNA extraction, the ITS1 region of the nuclear ribosomal RNA genes was amplified using modified versions of the primer set ITS1F and ITS2. After PCR, gel electrophoresis and purification from gel, samples were pooled and sent for 250bp paired-end sequencing on an Illumina Miseq. Raw sequence data was submitted to NCBI SRA (Bioproject PRJNA477418). The demultiplexed reads provided by Genomics Core UZ Leuven were quality filtered, clustered into OTUs and assigned a taxonomy through the PIPITS pipeline. Representative sequences that could not be assigned a taxonomy at genus-level were subjected to a BLAST-search against the NCBI nucleotide database. Sequences from environmental or uncultured samples were excluded from the results and the ten best matches with maximum e-value e-100 and minimum sequence similarity of 90% (genus level) and 97% (species level) were used to assign a taxonomy. In an additional quality filtering step, OTUs represented by less than 0.01% of the reads in a sample were considered absent from that sample. Finally, the results were put in an OTU table, which was run through FUNGuild, in order to select the ectomycorrhizal OTUs from the dataset. Rarefaction curves were fitted in order to check whether they were sufficiently deep sequenced. Samples of which the rarefaction curve did not reach an asymptote were removed. If the two samples from the same plot still remained after the removal, their results were merged by averaging their read numbers. Nitrate, ammonium, plant available phosphorus, pH, gravimetric water content and organic carbon content were analyzed for each of the two composite soil samples.
Data for: Mountain pine beetle attack faster growing lodgepole pine at low elevations in western Montana, USA
Contributors: Leila Cooper, Charlotte Reed, Ashley Ballantyne
Data for: Topography and overstory mortality interact to control tree regeneration in spruce-fir forests of the southern Rocky Mountains
Contributors: Kathy Kelsey, Miranda Redmond
... These files contain data on the size and number of seedlings, and the associated forest stand characteristics, present at 15 sites within subalpine forests of the southern Rocky Mountains, USA.
Data for: Ineffectiveness of local zoning to reduce regional loss and fragmentation of wintering habitat for white-tailed deer
Contributors: Erin Simons-Legaard, Kasey Legaard, Daniel Harrison
... .Zip files provide the vector shapefile of zones (Simons-Legaard vector) and time series of ArcGIS rasters (Simons-Legaard rasters) used to quantify changes in wintering habitat for white-tailed deer in Maine, where a cell value = 1 is Mature Conifer Forest, 2 is Mature Mixedwood Forest, 3 is Mature Deciduous Forest, 4 is Regenerating Forest, and 5 is Nonforest.
Data for: Effects of charcoal hearth soil on forest trees growth: evidence from a two-year common garden experiment
Contributors: Elisa Carrari, Martina Pollastrini, Federico Selvi, Filippo Bussotti, Ana Garcia Nogales, Andrea Coppi, Evy Ampoorter, kris verheyen
... Dataset related the manuscrpit "Effects of charcoal hearth soil on forest trees growth: evidence from a two-year common garden experiment". Forest Ecology and Management (Carrari, Ampoorter, Bussotti, Coppi, Garcia Nogales, Pollastrini, Verheyen, Selvi): Dataset_GR.SR_Carrari et al.: Germination rate and Survival rate raw data Dataset_H_Carrari et al.: Seedling height raw data Dataset_RB.RS_Carrari et al.: Root and shoot dry weight biomass raw data Dataset_FV.FM_Carrari et al.: Fv/Fm index raw data