Multiple stages of tree seedling recruitment are altered in tropical forests degraded by selective logging
| Main Authors: | Pillay, Rajeev, Hua, Fangyuan, Loiselle, Bette A, Bernard, Henry, Fletcher, Robert J |
|---|---|
| Other Authors: | The SAFE Project |
| Format: | info dataset |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/2020340 |
Daftar Isi:
- Description: Tree locations, tree size measurements, seed trap data, seed germination and seedling survival dataProject: This dataset was collected as part of the following SAFE research project: The impact of logging on density-dependent predation and recruitment of dipterocarp seeds during a mast-fruiting yearXML metadata: GEMINI compliant metadata for this dataset is available hereFiles: This consists of 1 file: Pillay_R_et_al_Dryobalanops_lanceolata_AllData.xlsxPillay_R_et_al_Dryobalanops_lanceolata_AllData.xlsxThis file contains dataset metadata and 4 data tables:TreeSize (described in worksheet TreeSize)Description: Size measurements of experimental treesNumber of fields: 8Number of data rows: 13Fields: ftype: Forest Type (Field type: Categorical)tree.id: Unique ID of experimental trees (Field type: Location)Species: Species identity (Field type: Taxa)dbh_cm: Tree DBH (Field type: Numeric)measured_height_m: Measured tree height (Field type: Numeric)researcher_height_m: Researcher height (Field type: Numeric)height_m: Tree height (measured height + researcher height) (Field type: Numeric)crown_diameter_m: Tree crown diameter (Field type: Numeric)SeedfallTrapByDist (described in worksheet SeedfallTrapByDist)Description: Seed trap dataNumber of fields: 9Number of data rows: 312Fields: ftype: Forest Type (Field type: Categorical)tree.id: Unique ID of experimental trees (Field type: Location)Species: Species identity (Field type: Taxa)transect: Unique ID of transects around each experimental tree (Field type: ID)bearing: Transect compass bearing (Field type: Numeric)trap: Unique ID of seed traps along transects (Field type: ID)distance: Distance of seed trap along transect (Field type: Numeric)PC1: Principal Components Analysis variable used as a surrogate for tree size (Field type: Numeric)seeds: Total number of seeds that fell into each seed trap over the study period (Field type: Numeric)NaturalPlotsSingleRec-Seed (described in worksheet NaturalPlotsSingleRec-Seed)Description: Seed germination and seedling survival data in natural plotsNumber of fields: 23Number of data rows: 2069Fields: FTYPE: Forest Type (Field type: Categorical)TREE.ID: Unique ID of experimental trees (Field type: Location)Species: Species identity (Field type: Taxa)TRANSECT: Unique ID of transects around each experimental tree (Field type: ID)BEARING: Transect compass bearing (Field type: Numeric)PLOT: Unique ID of natural plots along transects (Field type: ID)DISTANCE: Distance of natural plot along transect (Field type: Numeric)SEED.ID.FIELD: Unique identification number assigned to each seed in the field (Field type: ID)SEED.ID.ANALYSES: 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)START: Date at which a seed entered the study (Field type: Date)STOP: Date at which a seed exited the study (i.e. died) (Field type: Date)STAGE: Survival stage a seed reached during the study (Field type: Categorical)GERM: Germination status coded as 0: germinated (right-censored) or 1: failed to germinate (i.e. died) (Field type: Numeric)SURV: Survival status coded as 0: survived beyond end of study (right-censored) or 1: died (Field type: Numeric)AGE: Age of a seed from the date it entered the study until the date it died (Field type: Numeric)CANOPY.COV: Proportion canopy cover available to each seed in a given natural plot (Field type: Numeric)PC1: Principal Components Analysis variable used as a surrogate for tree size (Field type: Numeric)TOTAL.SEEDTRAP: 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)TOTALDENS.SEEDTRAP: TOTAL.SEEDTRAP divided by the number of 1 sq.m. traps (24) to obtain average seed density around each focal tree (Field type: Numeric)CONSP.ALL: The total number of conspecific seeds surrounding a given seed in a natural plot (Field type: Numeric)CONSP.ALIVE: 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)AGENT.CATEGORY.MORTALITY: Mortality agents. Seedlings that survived beyond the end of the study were coded as NA in this column (Field type: Categorical)PREDATOR: Description of the mortality agents of each seed/seedling. NA (for seedlings that survived) (Field type: Categorical)ExclosureSingleRec-Seed (described in worksheet ExclosureSingleRec-Seed)Description: Seedling survival data in experimental (exclosure) and control plotsNumber of fields: 17Number of data rows: 1540Fields: FTYPE: Forest Type (Field type: Categorical)TREE.ID: Unique ID of experimental trees (Field type: Location)Species: Species identity (Field type: Taxa)TRANSECT: Unique ID of transects around each experimental tree (Field type: ID)BEARING: Transect compass bearing (Field type: Numeric)PLOT: Unique ID of natural plots along transects (Field type: ID)DISTANCE: Distance of natural plot along transect (Field type: Numeric)SEED.ID: Unique ID assigned to each seed in the field at the time of seed addition (Field type: ID)DENS.TRT: Density of seeds added to each plot (Field type: Numeric)TRT: Treatment coded as primary (unlogged) excl, primary-ctrl, logged excl and logged ctrl (Field type: Categorical)START: Date at which a was added or entered the study (Field type: Date)STOP: Date at which a seed exited the study (i.e. died) (Field type: Date)STAGE: Survival stage a seed reached during the study (Field type: Categorical)SURV: Survival status coded as 0: survived beyond end of study (right-censored) or 1: died (Field type: Numeric)AGE: Age of a seed from the date it entered the study until the date it died (Field type: Numeric)MORTALITY: Mortality agents. Seedlings that survived beyond the end of the study were coded as NA in this column (Field type: Categorical)PREDATOR: Description of the mortality agents of each seed/seedling. NA (for seedlings that survived) (Field type: Categorical)Date range: 2014-08-12 to 2014-11-04Latitudinal extent: 4.6896 to 4.7505Longitudinal extent: 116.9643 to 117.5824Taxonomic coverage: 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.Plantae - Tracheophyta - - Magnoliopsida - - - Malvales - - - - Dipterocarpaceae - - - - - Dryobalanops - - - - - - Dryobalanops lanceolata