Knowledge graph centered on Factorial field experiment with 74 nodes and 163 connections. Top connected: Rocky Mountain Biological Laboratory, Gothic, Barbey's Larkspur, Nuttall's Larkspur, Larkspurs.
Method synopsis
Factorial experiment crossing nitrogen addition treatments with dominant species removal treatments in replicated plots to test community responses to multiple global change drivers. Includes both selective removal of dominant species and random biomass removal controls.
Synthesized from method descriptions across 13 papers using this protocol.
Procedure from a recent peer-reviewed implementation
Eight treatment plots of 2×2 m each were established at both high elevation (3460m) and low elevation (2740m) sites, with treatments replicated eight times for a total of 32 plots at each elevation. Plots were arranged with warming imposed via transparent hexagonal open-top chambers.
Quantities: 32 plots per elevation (64 total), each 2×2 m in size, 8 replicates per treatmentDuration: Treatments deployed each summer since 2013Conditions: Summer growing season (June-August)
Dominant plant species (Wyethia amplexicaulis at low site, Juncus drummondii at high site) were removed by clipping at soil level within removal plots. Treatments were implemented 1 week after warming chambers were installed.
Quantities: Dominant species in designated removal plotsDuration: Applied once at beginning of growing seasonConditions: Applied after snowmelt and chamber installation