segplants: Contour segments individual-level data.

In nverno/seedsub: Contains seedling/substrate data from Mt Moosilauke

Description

For more details, see help for segdata. This data links to plot-level data in segplots by the 'PID' variable.

Usage

segplants

Format

An object of class data.table (inherits from data.frame) with 23680 rows and 34 columns.

• PID: Plot identifier, this is determined by unique combinations of CONTNAM and STPACE.

• ID: Unique plant ID

• SPEC: Species abbreviation.

• HT: Height of plant (cm).

• STMLEN: Stem length (may differ from HT for plants that are leaning significantly).

• YEAR: Year

• YRTAG: Year a plant was initially tagged.

• ALONG: Distance from the start of the segment to a plant (cm?).

• DISUPDN: Distance up/down from segment baseline to a plant (cm?).

• YRMORT: Year of mortality

• STAT: Status of plant (live or dead)

• DECM: Decline class

• TAG: Tag assigned to plant in field (not unique in dataset).

• CHECK: ???

• CII: Crown illumination index

• PALONG: Keeper's pace from the start of the segment to the seedling/sapling, which is accurate to +/-1 pace. Similar to ALONG used in 1998/1999, but in units of 'pace'.

• SGDPS: Segment displacement from the contour in paces ('U'=up, 'D'=down). Note that these can vary across years.

• SGLEN: Segment length (m). Note this can vary between years.

• NOTE: Notes from the field.

• Data for Seedlings Only:

  • SUB: Substrate seedling was growing on.

  • SUBON: Underlying substrate (ie. the substrate under SUB).

  • BRHT: Browsing height

  • SDSP[1-2]: The first/second species where tagging of seedling ceased before the end of the segment. See also NSDSP[1-2] and DSDSP[1-2].

  • NSDSP[1-2]: Total counts of species in SDSP1/SDSP2.

  • DSDSP[1-2]: Distance from beginning of segment to where tagging ceased in a segment for species defined in SDSP1/SDSP2.

  • HRB[1-3]: Abbreviations of the three species of herbs, shrubs, or trees with the highest cover in the 50cm radius circle around a seedling. If it was a shrub ACSP or ACPE, it was recorded as 'ACSP_SH' or 'ACPE_SH'.

  • NFCVR: Percent cover in herb layer in a 50cm radius circle centered on the seedling, excluding the focal seedling.

  • TCVR: Total percent cover in herb layer (including herb, shrub, tree species <= 1m) including the seedlings in a 50cm radius circle centered on the seedling. This was collected for 1988 tagged seedlings.

nverno/seedsub documentation built on May 24, 2019, 10:55 a.m.