Interactions between enrichment planted seedlings and mature trees in selectively logged lowland dipterocarp forest - dataset

Description

Old-growth forests in Southeast Asia are dominated by trees of the Dipterocarpaceae family which are targeted by selective logging. Their traits (supra-annual mast fruiting, limited dispersal, and recalcitrant seeds that form no seed bank) mean they can have poor natural regeneration rates in some selectively logged forests. Enrichment planting is commonly used to overcome recruitment limitation and increase restoration success. However, it is still unclear what factors influence the success rate of planted seedlings, including the characteristics of the surrounding tree matrix and local neighbourhood. Here, we examine the growth and survival of 721 enrichment line-planted seedlings within 24 plots of the selectively logged forest of the Sabah Biodiversity Experiment, in Malaysian Borneo, in relation to their species identity and local neighbourhoods. We mapped the spatial location, size, and identity of nearly 5,000 surrounding matrix trees (≥ 10 cm diameter at breast height ) within a 10 m radius of focal planted seedlings in 2012 and 2015. We analysed levels of tree density-dependence (in terms of canopy openness and total basal area of surrounding matrix trees), asymmetric competition with naturally occurring trees (the proportion of total basal area within a 10 m radius belonging to the largest tree), and confamilial density-dependence (the proportion of total basal area within a 10 m radius belonging to dipterocarps) for each seedling. The following research questions were addressed: how do changes in (a) light availability, (b) local competition, (c) asymmetric competition, and (d) confamilial density-dependence affect the (1) growth and (2) survival of enrichment planted dipterocarp seedlings? To answer these questions, we mapped the tree size, identity (dipterocarp or non-dipterocarp), and spatial location of surrounding matrix trees with DBH ≥ 10 cm within a 10 m radius of each planted seedling. Column descriptions:tree.id: The ID of the tree in question. This takes the format [plot].[line].[number] with cohort (Old [O] or new [N]) at the end.IDPlots: The plot number the tree in question is located in.Line_number: The specific line within a plot that the tree in question is located in.sp.plot: Column specifying both the species and the plot number of the tree in question, separated by a period.sp.cohort: Column specifying both the species and the cohort of the tree in question, separated by a comma.richness: If the plot the tree is located in is a plot enrichment-planted with one (mono) or 16 species (sixteen).X_m: Relative x coordinate - the first position of Field-Map had x,y,z-coordinates (0,0,0).Y_m: Relative y coordinate.Z_m: Relative z coordinate.genus: The genus-level identity of the seedling.species: The species-level identity of the seedlingsurvival: If the seedling was alive by 2015 (1 = alive, 0 = dead).planting.date: The date of planting of the seedling.survey_2002: the date of the survey for the 2002 censussurvey_2011: the date of the survey for the 2011 census.survey_2012: the date of the survey for the 2012 census.survey_2015: the date of the survey for the 2015 census.cohort: if this seedling was part of the initial planted cohort planted in 2002 (cohort 1) or the second cohort (cohort 2) which was planted later to replace those that had died.age_2002: the age (in days) of seedlings at the time of their survey in 2002age_2011: the age (in days) of seedlings at the time of their survey in 2011age_2012: the age (in days) of seedlings at the time of their survey in 2012age_2015: the age (in days) of seedlings at the time of their survey in 2015diam_2002: Basal diameter of seedling in 2002, measured in mm.diam_2011: Basal diameter of seedling in 2011, measured in mm.diam_2012: Basal diameter of seedling in 2012, measured in mm.diam_2015: Basal diameter of seedling in 2015, measured in mm.DBH_2002: DBH of seedling in 2002, measured in mm.DBH_2011: DBH of seedling in 2011, measured in mm.DBH_2012: DBH of seedling in 2012, measured in mm.DBH_2015: DBH of seedling in 2015, measured in mm.rgr_2002: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2002) / (age in days in 2015 - age in days in 2002).rgr_2011: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2011) / (age in days in 2015 - age in days in 2011).rgr_2012: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2012) / (age in days in 2015 - age in days in 2012).openness: The average canopy openness score across 4 cardinal directions, taken during the second census.ba_total_5: the total basal area of surrounding trees within 5 m of the focal seedling ba_total_10: the total basal area of surrounding trees between 5 and 10 m of the focal seedling ba_total: the total basal area of surrounding trees within 10 m of the focal seedling ba_mean_5: the mean basal area of surrounding trees within 5 m of the focal seedling ba_mean_10: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling ba_mean: the mean basal area of surrounding trees within 10 m of the focal seedling dbh_max_5: The basal area of the largest tree within 5 m of the focal seedling dbh_max_10: The basal area of the largest tree between 5 and 10 m of the focal seedling dbh_max: The basal area of the largest tree within 10 m of the focal seedling no_trees_5: The number of trees within 5 m of the focal seedlingno_trees_10: The number of trees between 5 and 10 m of the focal seedlingno_trees: The number of trees between 5 and 10 m of the focal seedlingba_total_5_nondip: the total basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding non-dipterocarpsba_total_10_nondip: the total basal area of surrounding trees between 5 and 10 m of the focal seedling , considering only surrounding non-dipterocarpsba_total_nondip: the total basal area of surrounding trees within 10 m of the focal seedling , considering only surrounding non-dipterocarpsba_mean_5_nondip: the mean basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding non-dipterocarpsba_mean_10_nondip: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarpsba_mean_nondip: the mean basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding non-dipterocarpsdbh_max_5_nondip: The basal area of the largest tree within 5 m of the focal seedling, considering only surrounding non-dipterocarpsdbh_max_10_nondip: The basal area of the largest tree between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarpsdbh_max_nondip: The basal area of the largest tree within 10 m of the focal seedling, considering only surrounding non-dipterocarpsno_trees_5_nondip: The number of trees within 5 m of the focal seedling, considering only surrounding non-dipterocarpsno_trees_10_nondip: The number of trees between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarpsno_trees_nondip: The number of trees within 10 m of the focal seedling, considering only surrounding non-dipterocarpsba_total_5_dip: the total basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding dipterocarpsba_total_10_dip: the total basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarpsba_total_dip: the total basal area of surrounding trees within 10 m of the focal seedling , considering only surrounding dipterocarpsba_mean_5_dip: the mean basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding dipterocarpsba_mean_10_dip: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarpsba_mean_dip: the mean basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding dipterocarpsdbh_max_5_dip: The basal area of the largest tree within 5 m of the focal seedling, considering only surrounding dipterocarpsdbh_max_10_dip: The basal area of the largest tree between 5 and 10 m of the focal seedling, considering only surrounding dipterocarpsdbh_max_dip: The basal area of the largest tree within 10 m of the focal seedling, considering only surrounding dipterocarpsno_trees_5_dip: The number of trees within 5 m of the focal seedling, considering only surrounding dipterocarpsno_trees_10_dip: The number of trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarpsno_trees_dip: The number of trees within 10 m of the focal seedling, considering only surrounding dipterocarpsopenness_log: the openness column now expressed on a natural log scale.ba_total_log: The ba_total column expressed on a natural log scale.ba_total_log_scaled: The ba_total_log column scaled using the scale() function (center = TRUE, scale = FALSE).prop_dip: The proportion of basal area of surrounding trees that belong to dipterocarpsba_max: The basal area of the largest tree, calculated as pi * ((dbh_max / 10) ^ 2) / 40000.prop_ba_max: the proportion of the basal area that belongs to the largest single tree

Contact Person

Ryan Veryard ([e-mail])

Funding

These data were collected as part of research funded by:

National Environmental Research Council (Standard grant , NE/S007474/1 , https://www.environmental-research.ox.ac.uk/ )

Agencia Estatal de Investigación de España (Standard grant , RYC2021-032049-I , https://www.aei.gob.es/ )

Ministry of Education, Youth and Sports of the Czech Republic (Standard grant , INTER-TRANSFER LTT17017 , https://msmt.gov.cz/ )

This dataset is released under the CC-BY 4.0 licence, requiring that you cite the dataset in any outputs, but has the additional condition that you acknowledge the contribution of these funders in any outputs.

Files

This dataset consists of 1 file: fieldmap_dataset.xlsx

fieldmap_dataset.xlsx

This file contains dataset metadata and 1 data tables:

Interactions between enrichment planted seedlings and mature trees in selectively logged lowland dipterocarp forest - dataset

Worksheet: Fieldmap_data

Description: Dataset for the published paper "Interactions between enrichment planted seedlings and mature trees in selectively logged lowland dipterocarp forest"

Number of fields: 74

Number of data rows: 721

tree.id: The ID of the tree in question. This takes the format [plot].[line].[number] with cohort (Old [O] or new [N]) at the end. (type: replicate)

IDPlots: The plot number the tree in question is located in. (type: location)

Line_number: The specific line within a plot that the tree in question is located in. (type: numeric)

richness: If the plot the tree is located in is a plot enrichment-planted with one (mono) or 16 species (sixteen). (type: ordered categorical)

X_m: Relative x coordinate - the first position of Field-Map had x,y,z-coordinates (0,0,0). (type: numeric)

Y_m: Relative y coordinate. (type: numeric)

Z_m: Relative z coordinate. (type: numeric)

genus: The genus-level identity of the seedling. (type: categorical)

species: The species-level identity of the seedling (type: taxa)

survival: If the seedling was alive by 2015 (1 = alive, 0 = dead). (type: numeric trait)

planting.date: The date of planting of the seedling. (type: date)

survey_2002: the date of the survey for the 2002 census (type: date)

survey_2011: the date of the survey for the 2011 census. (type: date)

survey_2012: the date of the survey for the 2012 census. (type: date)

survey_2015: the date of the survey for the 2015 census. (type: date)

cohort: if this seedling was part of the initial planted cohort planted in 2002 (cohort 1) or the second cohort (cohort 2) which was planted later to replace those that had died. (type: ordered categorical)

age_2002: the age (in days) of seedlings at the time of their survey in 2002 (type: numeric trait)

age_2011: the age (in days) of seedlings at the time of their survey in 2011 (type: numeric trait)

age_2012: the age (in days) of seedlings at the time of their survey in 2012 (type: numeric trait)

age_2015: the age (in days) of seedlings at the time of their survey in 2015 (type: numeric trait)

diam_2002: Basal diameter of seedling in 2002, measured in mm. (type: numeric trait)

diam_2011: Basal diameter of seedling in 2011, measured in mm. (type: numeric trait)

diam_2012: Basal diameter of seedling in 2012, measured in mm. (type: numeric trait)

diam_2015: Basal diameter of seedling in 2015, measured in mm. (type: numeric trait)

DBH_2002: DBH of seedling in 2002, measured in mm. (type: numeric trait)

DBH_2011: DBH of seedling in 2011, measured in mm. (type: numeric trait)

DBH_2012: DBH of seedling in 2012, measured in mm. (type: numeric trait)

DBH_2015: DBH of seedling in 2015, measured in mm. (type: numeric trait)

rgr_2002: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2002) / (age in days in 2015 - age in days in 2002). (type: numeric trait)

rgr_2011: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2011) / (age in days in 2015 - age in days in 2011). (type: numeric trait)

rgr_2012: the relative growth rate of seedling, calculated as (ln(diameter in 2015)-ln(diameter in 2012) / (age in days in 2015 - age in days in 2012). (type: numeric trait)

openness: The average canopy openness score across 4 cardinal directions, taken during the second census. (type: numeric)

ba_total_5: the total basal area of surrounding trees within 5 m of the focal seedling (type: numeric)

ba_total_10: the total basal area of surrounding trees between 5 and 10 m of the focal seedling (type: numeric)

ba_total: the total basal area of surrounding trees within 10 m of the focal seedling (type: numeric)

ba_mean_5: the mean basal area of surrounding trees within 5 m of the focal seedling (type: numeric)

ba_mean_10: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling (type: numeric)

ba_mean: the mean basal area of surrounding trees within 10 m of the focal seedling (type: numeric)

dbh_max_5: The basal area of the largest tree within 5 m of the focal seedling (type: numeric)

dbh_max_10: The basal area of the largest tree between 5 and 10 m of the focal seedling (type: numeric)

dbh_max: The basal area of the largest tree within 10 m of the focal seedling (type: numeric)

no_trees_5: The number of trees within 5 m of the focal seedling (type: numeric)

no_trees_10: The number of trees between 5 and 10 m of the focal seedling (type: numeric)

no_trees: The number of trees between 5 and 10 m of the focal seedling (type: numeric)

ba_total_5_nondip: the total basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_total_10_nondip: the total basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_total_nondip: the total basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_mean_5_nondip: the mean basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_mean_10_nondip: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_mean_nondip: the mean basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

dbh_max_5_nondip: The basal area of the largest tree within 5 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

dbh_max_10_nondip: The basal area of the largest tree between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

dbh_max_nondip: The basal area of the largest tree within 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

no_trees_5_nondip: The number of trees within 5 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

no_trees_10_nondip: The number of trees between 5 and 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

no_trees_nondip: The number of trees within 10 m of the focal seedling, considering only surrounding non-dipterocarps (type: numeric)

ba_total_5_dip: the total basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

ba_total_10_dip: the total basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

ba_total_dip: the total basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

ba_mean_5_dip: the mean basal area of surrounding trees within 5 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

ba_mean_10_dip: the mean basal area of surrounding trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

ba_mean_dip: the mean basal area of surrounding trees within 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

dbh_max_5_dip: The basal area of the largest tree within 5 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

dbh_max_10_dip: The basal area of the largest tree between 5 and 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

dbh_max_dip: The basal area of the largest tree within 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

no_trees_5_dip: The number of trees within 5 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

no_trees_10_dip: The number of trees between 5 and 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

no_trees_dip: The number of trees within 10 m of the focal seedling, considering only surrounding dipterocarps (type: numeric)

openness_log: the openness column now expressed on a natural log scale. (type: numeric)

ba_total_log: The ba_total column expressed on a natural log scale. (type: numeric)

ba_total_log_scaled: The ba_total_log column scaled using the scale() function (center = TRUE, scale = FALSE). (type: numeric)

prop_dip: The proportion of basal area of surrounding trees that belong to dipterocarps (type: numeric)

ba_max: The basal area of the largest tree, calculated as pi * ((dbh_max / 10) ^ 2) / 40000. (type: numeric)

prop_ba_max: the proportion of the basal area that belongs to the largest single tree (type: numeric)

Extents

Date range: 2002-07-01 to 2015-05-28

Latitudinal extent: 5.07° to 5.1°

Longitudinal extent: 117.64° to 117.67°

Taxonomic coverage

This dataset contains data associated with taxa and these have been validated against appropriate taxonomic authority databases.

GBIF taxa details

The following taxa were validated against the GBIF backbone dataset (version 2023-08-28). 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 -  -  -  -  -  - Dipterocarpus -  -  -  -  -  -  - Dipterocarpus conformis -  -  -  -  -  - Dryobalanops -  -  -  -  -  -  - Dryobalanops lanceolata -  -  -  -  -  - Hopea -  -  -  -  -  -  - Hopea ferruginea -  -  -  -  -  -  - Hopea sangal -  -  -  -  -  - Parashorea -  -  -  -  -  -  - Parashorea malaanonan -  -  -  -  -  -  - Parashorea warburgii (as synonym: Parashorea tomentella) -  -  -  -  -  - Shorea -  -  -  -  -  -  - Shorea argentifolia -  -  -  -  -  -  - Shorea beccariana -  -  -  -  -  -  - Shorea faguetiana -  -  -  -  -  -  - Shorea gibbosa -  -  -  -  -  -  - Shorea johorensis -  -  -  -  -  -  - Shorea leprosula -  -  -  -  -  -  - Shorea macrophylla -  -  -  -  -  -  - Shorea macroptera -  -  -  -  -  -  - Shorea ovalis -  -  -  -  -  -  - Shorea parvifolia