DOI: 10.6084/m9.figshare.24746235
title: Datasets from: Tropical forest aboveground productivity is maintained by nutrients cycled in litter

description: Datasets used in: Tropical forest aboveground productivity is maintained by nutrients cycled in litter <i>Journal of Ecology</i> (JEcol-2023-0461.R1)<br>Authors: Sayer, EJ, Leitman SF, Wright SJ, Rodtassana C, Vincent AG, Bréchet LM, Castro B, Lopez O, Tanner EVJ <b>File 1: GLMP_TreeData01-17_Sayer_et_al_JEcol2023.csv</b>Tree measurements for eight two-year census intervals from 2001 to 2017 in long-term litter manipulation plots in Panama, Central America.COLUMNS & ABBREVIATIONS<b>OBJECTID</b> <b>-&gt; </b>unique consecutive number for each individual tree<b>treatm -&gt; </b>experimental treatment, where CT is control, LA is litter addition and LR is litter removal<b>block -&gt; </b>replicate block, given as letters A-E<b>plot -&gt; </b>plot number, given as numbers 1-15<b>species -&gt; </b>species code following mnemonics used in Condit et al. 2019<b>location -&gt; </b>location of an individual within a given plot, where TR indicates a location within 2-m of a trench (plot edge); MP indicates trees located within the inner 30-m x 30-m measurement plot and BZ indicates a location outside the measurement plot but more than 2-m from the nearest trench.<b>ACCaggr -&gt; </b>Mean score for measurement accuracy across all census intervals, where 1 is repeatable with high accuracy, 2 is repeatable with good accuracy and 3 is an inaccurate measurement due to obstructions<b>exclude -&gt; </b>Y = measurement was excluded from analysis<b>census -&gt; </b>measurement census interval, giving the first and last year of each interval between 2001 and 2017<b>year -&gt; </b>first year of each census interval<b>timestep -&gt; </b>time variable used for analysis, where the pretreatment census interval (2001-2003) is step 0, and subsequent census intervals after the start of measurement are numbered consecutively from 1-7.<b>wsg -&gt; </b>wood specific gravity measurements (grams per cm3 dry weight) from Condit et al. 2019<b>fun.gr -&gt;</b> functional group based on species’ recruitment responses to light according to Rüger et al. 2009, where ACC is accelerating species, DEC is decelerating species and NEG is negative species<b>light.ef -&gt; </b>light effect values (unitless) following Rüger et al. 2009<b>initial.dbh -&gt; </b>measured DBH at the start of each census interval<b>mm.yr -&gt; </b>absolute growth rate in mm per year<b>survival -&gt; </b>tree survival where 1 indicates that the tree survived a given census interval and 0 indicates that the tree dies during the census interval.<br><b>File 2: GLMP_Litterfall03-09_Sayer_et_al_JEcol2023.csv</b>Litterfall data for 2003 to 2019, collected monthly from litter traps (0.76 x 0.76 m) in long-term litter manipulation plots in Panama, Central America.COLUMNS & ABBREVIATIONS<b>treatm -&gt; </b>experimental treatment, where CT is control, LA is litter addition and LR is litter removal<b>block -&gt; </b>replicate block, given as letters A-E<b>plot -&gt; </b>plot number, given as numbers 1-15<b>trap -&gt; </b>trap number (from 1-10) identifying individual traps within each plot<b>year -&gt; </b>year of collection<b>month -&gt; </b>month of litter collection<b>date -&gt; </b>date of sample collection - usually the last Thursday in each month<b>days.accum -&gt; </b>number of days between consecutive collections<b>mass.g.trap -&gt; </b>dry weight of the litter in grams per trap<b>time.step -&gt; </b>time variable used for analysis, where the first year of experimental treatments (2003) is step 0, and subsequent years after the start of treatments are numbered consecutively from 1-16.<br><b>References</b>Condit, R. et al. (2019). Complete data from the Barro Colorado 50-ha plot: 423617 trees, 35 years [Dataset]. Dryad. https://doi.org/10.15146/5xcp-0d46Rüger, N., Huth, A., Hubbell, S. P., & Condit, R. (2009). Response of recruitment to light availability across a tropical lowland rain forest community. Journal of Ecology, 97, 1360-1368.<br>