Spatial aggregation and seedling survival of the Borneo Ironwood (Eusideroxylon zwageri)

Description: This dataset was collected by the Imperial College London MRes Tropical Forest Ecology Field Course as a group project in Maliau Basin. Fieldwork was carried out on 29 Jan - 1 Feb 2018. A 4-ha plot was set up to assess the spatial aggregation of the Borneo Ironwood (Eusideroxylon zwageri, local name Belian) and seedling survival. All trees with DBH >1cm were mapped with XY coordinate rounded to nearest 1m. DBH class was rounded down to the nearest 10cm, e.g. size 10, 20, 30 etc. Size class 1 refers to trees with DBH between 1 and 10cm. A swamp area on the north and northeast of ~1-ha was not assessible hence data defficient, but as Belian is not known to growth in water logged conditions the species was presumed to be absent in this swamp area. Belian seedlings were surveyed in 540 5x5m subplots in the centre zone of the 4-ha plot. In each seedling plot, healthy and damaged (primarily herbivory damage by mammals, defined as damaged when top shoot, i.e. apical meristem, was missing). Other variables recorded in seedling plots include slope angle and ground vegetation cover.Project: This dataset was collected as part of the following SAFE research project: MRes Tropical Forest Ecology Field CourseXML metadata: GEMINI compliant metadata for this dataset is available hereData worksheets: There are 2 data worksheets in this dataset:Belian tree coordinates (Worksheet Belian trees)Dimensions: 101 rows by 10 columnsDescription: All trees with DBH >1cm were mapped in a 4-ha plot with XY coordinate rounded to nearest 1m. Each row corresponds to a Belian tree. DBH class was rounded down to the nearest 10cm, e.g. size 10, 20, 30 etc. Size class 1 refers to trees with DBH between 1 and 10cm. A swamp area on the north and northeast of ~1-ha was not assessible hence data defficient, but as Belian is not known to growth in water logged conditions the species was presumed to be absent in this swamp area.Fields: X10: X coordinate of the southwest corner of 10x10 m subplot (Field type: Numeric)Y10: Y coordinate of the southwest corner of 10x10 m subplot (Field type: Numeric)X: X coordinate within the 10x10m subplot (local X) (Field type: Numeric)Y: Y coordinate within the 10x10m subplot (local Y) (Field type: Numeric)class: DBH rounded down to the nearest 10cm, e.g. size class 10, 20, 30 etc. Size class 1 refers to trees with DBH between 1 and 10cm (Field type: Numeric Trait)remark: remark on whether tree is a resprout from the base of an older tree and other tree condition information (Field type: Comments)collected_by: members of field teams: 4 groups of 4 students each (Field type: Comments)X_coord: X coordinate within the 4-ha plot (global X) (Field type: Numeric)Y_coord: Y coordinate within the 4-ha plot (global Y) (Field type: Numeric)Belian seedling plots (Worksheet Belian seedlings)Dimensions: 550 rows by 11 columnsDescription: Belian seedlings were surveyed in 540 5x5m subplots in the centre zone of the 4-ha plot. Each row corresponds to a seedling plot. In each seedling plot, healthy and damaged (primarily herbivory damage by mammals, defined as damaged when top shoot, i.e. apical meristem, was missing). Other variables recorded in seedling plots include slope angle and ground vegetation cover.Fields: X10: X coordinate of the southwest corner of 10x10 m subplot (Field type: Numeric)Y10: Y coordinate of the southwest corner of 10x10 m subplot (Field type: Numeric)healthy: count of healthy Belian seedlings within 5x5m plot. "healthy" is defined as opposed to "damaged" (see next data column) (Field type: Abundance)damaged: count of damaged Belian seedlings within 5x5m plot. "damaged" is defined as when a seedling suffered severe herbivory damage (including dead seedlings) with the apical meristem entirely missing (eaten by mammals) (Field type: Abundance)slope: mean slope angle for each seedling subplot, a measure of habitat topography (Field type: Numeric)veg_cover: ground vegetation cover for each subplot, a measure of habitat and interspecific competition (Field type: Numeric)cache: when seedlings occur in dense clusters especially under fallen tree or in buttress crevices, this may indicate they were deposited there by rodents, i.e. caching (Field type: Comments)remark: remark on habitat. seedling plots on footpath or water should be excluded from data analysis (Field type: Comments)collected_by: members of field teams: 4 groups of 4 students each (Field type: Comments)total: total number of Belian seedlings (Field type: Abundance)Date range: 2018-01-29 to 2018-02-01Latitudinal extent: 4.7383 to 4.7383Longitudinal extent: 116.9713 to 116.9713Taxonomic 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 - - - Laurales - - - - Lauraceae - - - - - Eusideroxylon - - - - - - Eusideroxylon zwager