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102 results for “logged forest”
Figure 5 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 5 - Boxplots depicting catch rates (beetles/day) for eight abundant species collected from experimental plots where forest was a clearcut and deadwood was left intact (SOH) b clearcut with quantity of deadwood reduced (WTH), and c uncut forest (Control). Bold line depicts median value, box denotes 25–75% quantile range, whiskers correspond to 1.5 times the interquartile range.
Figure 6 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 6 - Multivariate regression tree based on sum-of-squares depicting differences in beetle assemblages among experimental plots where forest was a clearcut with stem-only harvested (SOH) b clearcut with whole-tree harvested (WTH), and c uncut forest (Control). The tree was selected based on 935/1000 cross-validations and explains 64% of the variance. Both experimental treatment and deadwood volumes provided equivalent improvement at each split. We have labelled splits using experimental treatments.
Figure 4 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 4 - Boxplots depicting overall catch rates (beetles/day) where forest was a clearcut and deadwood was left intact (SOH) b clearcut with quantity of deadwood reduced (WTH), and c uncut forest (Control). Bold line depicts median value, box denotes 25–75% quantile range, whiskers correspond to 1.5 times the interquartile range.
Figure 3 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 3 - Boxplots showing volume of fine and coarse woody debris in stem-only harvested plots (SOH), whole-tree harvested plots (WTH), and in uncut forest (Control). Bold line depicts median value, box denotes 25–75% quantile range, whiskers correspond to 1.5 times the interquartile range.
Figure 1 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 1 - Schematic representation of treatments with pitfall trap locations, Forêt Montmorency, Quebec.
Figure 2 from: Klimaszewski J, Work T, Thiffault E, Bourdon C, Pare D, Bousquet Y, Venier L, Titus B (2013) Initial responses of rove and ground beetles (Coleoptera, Staphylinidae, Carabidae) to removal of logging residues following clearcut harvesting in the boreal forest of Quebec, Canada. ZooKeys 258: 31-52. https://doi.org/10.3897/zookeys.258.4174
Figure 2 - Photographs of experimental plots taken one year following harvest (2012) A, B photos of uncut forests (Control) C stem-only harvested plot (SOH) (operational level) D whole-tree harvested plot (WTH).
Multiple stages of tree seedling recruitment are altered in tropical forests degraded by selective logging
<b>Description: </b><p>Tree locations, tree size measurements, seed trap data, seed germination and seedling survival data</p><p><b>Project: </b>This dataset was collected as part of the following SAFE research project: <a href="https://www.safeproject.net/projects/project_view/132"><b>The impact of logging on density-dependent predation and recruitment of dipterocarp seeds during a mast-fruiting year</b></a></p><p><b>XML metadata: </b>GEMINI compliant metadata for this dataset is available <a href="https://www.safeproject.net/datasets/xml_metadata?id=221">here</a></p><p><b>Files: </b>This consists of 1 file: Pillay_R_et_al_Dryobalanops_lanceolata_AllData.xlsx</p><p><b>Pillay_R_et_al_Dryobalanops_lanceolata_AllData.xlsx</b></p><p>This file contains dataset metadata and 4 data tables:</p><ol><li><p><b>TreeSize</b> (described in worksheet TreeSize)</p><p>Description: Size measurements of experimental trees</p><p>Number of fields: 8</p><p>Number of data rows: 13</p><p>Fields: </p><ul><li><b>ftype</b>: Forest Type (Field type: Categorical)</li><li><b>tree.id</b>: Unique ID of experimental trees (Field type: Location)</li><li><b>Species</b>: Species identity (Field type: Taxa)</li><li><b>dbh_cm</b>: Tree DBH (Field type: Numeric)</li><li><b>measured_height_m</b>: Measured tree height (Field type: Numeric)</li><li><b>researcher_height_m</b>: Researcher height (Field type: Numeric)</li><li><b>height_m</b>: Tree height (measured height + researcher height) (Field type: Numeric)</li><li><b>crown_diameter_m</b>: Tree crown diameter (Field type: Numeric)</li></ul></li><li><p><b>SeedfallTrapByDist</b> (described in worksheet SeedfallTrapByDist)</p><p>Description: Seed trap data</p><p>Number of fields: 9</p><p>Number of data rows: 312</p><p>Fields: </p><ul><li><b>ftype</b>: Forest Type (Field type: Categorical)</li><li><b>tree.id</b>: Unique ID of experimental trees (Field type: Location)</li><li><b>Species</b>: Species identity (Field type: Taxa)</li><li><b>transect</b>: Unique ID of transects around each experimental tree (Field type: ID)</li><li><b>bearing</b>: Transect compass bearing (Field type: Numeric)</li><li><b>trap</b>: Unique ID of seed traps along transects (Field type: ID)</li><li><b>distance</b>: Distance of seed trap along transect (Field type: Numeric)</li><li><b>PC1</b>: Principal Components Analysis variable used as a surrogate for tree size (Field type: Numeric)</li><li><b>seeds</b>: Total number of seeds that fell into each seed trap over the study period (Field type: Numeric)</li></ul></li><li><p><b>NaturalPlotsSingleRec-Seed</b> (described in worksheet NaturalPlotsSingleRec-Seed)</p><p>Description: Seed germination and seedling survival data in natural plots</p><p>Number of fields: 23</p><p>Number of data rows: 2069</p><p>Fields: </p><ul><li><b>FTYPE</b>: Forest Type (Field type: Categorical)</li><li><b>TREE.ID</b>: Unique ID of experimental trees (Field type: Location)</li><li><b>Species</b>: Species identity (Field type: Taxa)</li><li><b>TRANSECT</b>: Unique ID of transects around each experimental tree (Field type: ID)</li><li><b>BEARING</b>: Transect compass bearing (Field type: Numeric)</li><li><b>PLOT</b>: Unique ID of natural plots along transects (Field type: ID)</li><li><b>DISTANCE</b>: Distance of natural plot along transect (Field type: Numeric)</li><li><b>SEED.ID.FIELD</b>: Unique identification number assigned to each seed in the field (Field type: ID)</li><li><b>SEED.ID.ANALYSES</b>: For statistical analyses, a continuous numbering scheme was followed with respect to the unique identification number assiged to each seed. This facilitated calculating summary statistics and overall analyses. (Field type: ID)</li><li><b>START</b>: Date at which a seed entered the study (Field type: Date)</li><li><b>STOP</b>: Date at which a seed exited the study (i.e. died) (Field type: Date)</li><li><b>STAGE</b>: Survival stage a seed reached during the study (Field type: Categorical)</li><li><b>GERM</b>: Germination status coded as 0: germinated (right-censored) or 1: failed to germinate (i.e. died) (Field type: Numeric)</li><li><b>SURV</b>: Survival status coded as 0: survived beyond end of study (right-censored) or 1: died (Field type: Numeric)</li><li><b>AGE</b>: Age of a seed from the date it entered the study until the date it died (Field type: Numeric)</li><li><b>CANOPY.COV</b>: Proportion canopy cover available to each seed in a given natural plot (Field type: Numeric)</li><li><b>PC1</b>: Principal Components Analysis variable used as a surrogate for tree size (Field type: Numeric)</li><li><b>TOTAL.SEEDTRAP</b>: The total number of seeds around each focal tree as a measure of medium-scale seed density around focal trees. Obtained from seed trap data (Field type: Numeric)</li><li><b>TOTALDENS.SEEDTRAP</b>: TOTAL.SEEDTRAP divided by the number of 1 sq.m. traps (24) to obtain average seed density around each focal tree (Field type: Numeric)</li><li><b>CONSP.ALL</b>: The total number of conspecific seeds surrounding a given seed in a natural plot (Field type: Numeric)</li><li><b>CONSP.ALIVE</b>: The number of conspecific seeds that were alive at a census and surrounding a given seed in a natural plot. This variable was used as a measure of local-scale (1 sq. m.) conspecific seed/seedling density in survival analyses (Field type: Numeric)</li><li><b>AGENT.CATEGORY.MORTALITY</b>: Mortality agents. Seedlings that survived beyond the end of the study were coded as NA in this column (Field type: Categorical)</li><li><b>PREDATOR</b>: Description of the mortality agents of each seed/seedling. NA (for seedlings that survived) (Field type: Categorical)</li></ul></li><li><p><b>ExclosureSingleRec-Seed</b> (described in worksheet ExclosureSingleRec-Seed)</p><p>Description: Seedling survival data in experimental (exclosure) and control plots</p><p>Number of fields: 17</p><p>Number of data rows: 1540</p><p>Fields: </p><ul><li><b>FTYPE</b>: Forest Type (Field type: Categorical)</li><li><b>TREE.ID</b>: Unique ID of experimental trees (Field type: Location)</li><li><b>Species</b>: Species identity (Field type: Taxa)</li><li><b>TRANSECT</b>: Unique ID of transects around each experimental tree (Field type: ID)</li><li><b>BEARING</b>: Transect compass bearing (Field type: Numeric)</li><li><b>PLOT</b>: Unique ID of natural plots along transects (Field type: ID)</li><li><b>DISTANCE</b>: Distance of natural plot along transect (Field type: Numeric)</li><li><b>SEED.ID</b>: Unique ID assigned to each seed in the field at the time of seed addition (Field type: ID)</li><li><b>DENS.TRT</b>: Density of seeds added to each plot (Field type: Numeric)</li><li><b>TRT</b>: Treatment coded as primary (unlogged) excl, primary-ctrl, logged excl and logged ctrl (Field type: Categorical)</li><li><b>START</b>: Date at which a was added or entered the study (Field type: Date)</li><li><b>STOP</b>: Date at which a seed exited the study (i.e. died) (Field type: Date)</li><li><b>STAGE</b>: Survival stage a seed reached during the study (Field type: Categorical)</li><li><b>SURV</b>: Survival status coded as 0: survived beyond end of study (right-censored) or 1: died (Field type: Numeric)</li><li><b>AGE</b>: Age of a seed from the date it entered the study until the date it died (Field type: Numeric)</li><li><b>MORTALITY</b>: Mortality agents. Seedlings that survived beyond the end of the study were coded as NA in this column (Field type: Categorical)</li><li><b>PREDATOR</b>: Description of the mortality agents of each seed/seedling. NA (for seedlings that survived) (Field type: Categorical)</li></ul></li></ol><p><b>Date range: </b>2014-08-12 to 2014-11-04</p><p><b>Latitudinal extent: </b>4.6896 to 4.7505</p><p><b>Longitudinal extent: </b>116.9643 to 117.5824</p><p><b>Taxonomic coverage: </b><br> All taxon names are validated against the GBIF backbone taxonomy. If a dataset uses a synonym, the accepted usage is shown followed by the dataset usage in brackets. Taxa that cannot be validated, including new species and other unknown taxa, morphospecies, functional groups and taxonomic levels not used in the GBIF backbone are shown in square brackets.</p><div>Plantae<br> - Tracheophyta<br> -  - Magnoliopsida<br> -  -  - Malvales<br> -  -  -  - Dipterocarpaceae<br> -  -  -  -  - <i>Dryobalanops</i><br> -  -  -  -  -  - <i>Dryobalanops lanceolata</i><br></div><p></p>
Data from: The impact of tropical forest logging and oil palm agriculture on the soil microbiome
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Data from: Small logging roads do not restrict movements of forest rats in Bornean logged forests
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Long-term logging residue loadings affect tree growth but not soil nutrients in lodgepole pine forests
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Agent‐based modeling of the effects of forest dynamics, selective logging, and fragment size on epiphyte communities
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Habitat fragmentation and logging affects the occurrence of the lesser mouse deer in tropical forest reserves
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Managed logging negatively affects the density and abundance of some dry forest specialist bird species of northeastern Brazil
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LBA-ECO LC-13 GIS Coverages of Logged Areas, Tapajos Forest, Para, Brazil: 1996, 1998
We combined a detailed field study of canopy gap fraction with spectral mixture analysis of Landsat ETM+ satellite imagery to assess landscape and regional dynamics of canopy damage following selective logging in an eastern Amazon forest. Our field studies encompassed measurements of ground damage and canopy gap fractions along multitemporal sequences of post-harvest regrowth of 0.5-3.5 yr. Areas used to stage harvested logs prior to transport, called log decks, had the largest forest gap fractions, but their contribution to the landscape-level gap dynamics was minor. Tree falls were spatially the most extensive form of canopy damage following selective logging, but the canopy gap fractions resulting from them were small. Reduced-impact logging resulted in consistently less damage to the forest canopy than did conventional logging practices. This was true at the level of individual landscape strata such as roads, skids, and tree falls as well as at the area-integrated scale.A spectral mixture model was employed that utilizes bundles of field and image spectral reflectance measurements with a Monte Carlo analysis to estimate high spatial resolution (subpixel) cover of forest canopies, exposed nonphotosynthetic vegetation, and soils in the Landsat imagery. The method proved highly useful for quantifying forest canopy cover fraction in the log decks, roads, skids, tree fall, and intact forest areas, and it tracked caopy damage up to 3.5 yr post-harvest. Forest canopy cover fractions derived from satellite observations were highly and inversely correlated with field- and satellite-based measurements. A 450-km^2 study of gap fraction showed that approximately one-half of the canopy opening caused by logging is closed within one year of regrowth following timber harvests. This is the first regional-scale study utilizing field measurements, satellite observations, and models to quantify forest canopy damage and recovery following selective logging in the Amazon.
LBA-ECO LC-21 Foliar Nutrients, Logged Areas, Tapajos Forest, Para, Brazil: 2003
This data set provides measurements for foliar nutrients from logging blocks in the Tapajos National Forest, Para Western Santarem, Brazil. Data are included for calcium (Ca), phosphorus (P), magnesium (Mg), nitrogen (N), and potassium (K) concentrations. In March 2003 foliar samples were collected from the cover types remaining after selective logging in 2002: forest, tree-fall gaps, skids, roads, and deck areas. Fresh foliage was also collected in March 2003, from 192 upper canopy species at an intact forest site 17 km from the logging area. There are two data files with this data set.
LBA-ECO CD-11 Biophysical Measurements of Logged and Fire-Treated Forests, Brazil
This data set reports the results of vegetation field surveys that measured tree height and diameter at breast height (DBH) in defined size classes at three study sites -- Santarem, Para; Paragominas, Para; and Alo Brasil, Mato Grosso, Brazil, from 2001-2003.At each site, plots and transects within plots, were defined that represented different types of logging and fire treatments, each including one primary forest plot used as a control. Along each transect all trees with more than 30 cm DBH were measured. Dead standing trees were also measured and classified in three classes of decomposition. A 4 m wide transect was used to measure individuals between 10 and 30 cm DBH. Six small subplots were set along each transect to measure regeneration individuals from 2-10 cm DBH and 0-2 cm DBH. DBH is also provided for stumps found in each of the logged forest plots. There are ten comma-delimited data files with this data set.
LBA-ECO CD-04 Logging Damage, km 83 Tower Site, Tapajos National Forest, Brazil
This data set contains the results of a survey of logging damage in a 18 ha plot (300 m N-S, 600 m E-W) east (upwind) of the eddy flux tower at km 83, Tapajos National Forest, Para, Brazil. Data collected include type of damage, snap height, and log dimensions, as well as calculated biomass of stems and canopy either damaged or removed in logging. There are two comma-delimited data files with this data set.
LBA-ECO ND-11 Forest Damage Following Reduced Impact Logging, NW Mato Grosso, Brazil
Data were collected in the logging concession at the Fazenda Rohsamar in the municipality of Juruena in northwestern Mato Grosso. Estimates of damage associated with logging operations were made after logging operations were complete in 2003 and 2004. Damage associated with gaps created by felling single trees was estimated in 54 individual gaps. Characteristics of the single harvested tree were recorded and included species, DBH, commercial height, total height, and canopy proportions. Damage to all surrounding trees was recorded. Stratified transects in two logging blocks were used to estimate damage associated with road building and skid trails. Twenty-six transects were established in Block 5 and 21 transects in Block 18 to assess the frequency of damage by log skidders and tree felling. The boundaries between different types of damage were noted along the transect and the length in meters of that damage type along the transect was recorded. From this information, the area of the logging block affected by road building and skid trails was determined.The Gap Survey and the Logging Damage Transects Survey data are provided in comma-separated ASCII files. A third file provides the coordinates of the starting points for the Survey Transects.
LBA-ECO LC-21 Soil Characteristics, Logged Areas, Tapajos Forest, Para, Brazil: 2003
This data set provides measurements for soil nutrients from areas that were selectively logged and from control areas in the Tapajos National Forest, Para Western Santarem, Brazil. Data are included for calcium (Ca), phosphorus (P), magnesium (Mg), nitrogen (N), aluminum (Al), iron (Fe), silicon (Si), carbon 13, nitrogen 15, and potassium (K) concentrations. In addition, data are included for Phosphorus fractionation which was performed on a subset of the soils, and soil bulk density measurements. The samples were from clay-dominated (oxisols) soils.
Climate anomalies and neighbourhood crowding interact in shaping tree growth in old-growth and selectively-logged tropical forests
<p>Species mean information for the six leaf water-related traits used in the paper titled: Climate anomalies and neighbourhood crowding interact in shaping tree growth in old-growth and selectively-logged tropical forests.</p>
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