CWD biomass survey with decay class assignment (Pinaceae)

Knowledge graph centered on CWD biomass survey with decay class assignment (Pinaceae) with 30 nodes and 107 connections. Top connected: Spruce, Atriplex canescens, Dead wood biomass and turnover time, measured by r, elevational gradients, Picea engelmannii.

Method synopsis

Systematic measurement of all fallen dead wood ≥10 cm diameter with assignment to decay classes based on structural characteristics and decomposition state. Volume calculated using cylinder equations and converted to biomass using species-specific wood densities.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Dead wood biomass and turnover time, measured by radiocarbon, along a subalpine elevation gradient (2004), Oecologia. Implementations in other papers (listed below) may differ.

1. Survey and measure CWD biomass
   Included all pieces of fallen dead wood with diameters ≥10 cm at the widest point. Assigned each log to a qualitative decay class (0-V) based on bark amount, hole shape, branch condition, litter and herbaceous growth, and wood fragmentation. Calculated log volume using cylinder equation based on average diameter from three equally spaced measurements and length measurements.
   Quantities: Measured all CWD pieces ≥10 cm diameter across all 11 plots. Only included fraction of CWD laying inside plot boundaries.Duration: Survey conducted in 2001Conditions: Field survey during 2001 growing season
   Equipment: steel tape, calinomet, species-specific allometric equations
2. Measure standing dead tree biomass
   Measured diameter at breast height (dbh) and full height of all snags using steel tape and calinomet. Estimated individual snag volume using species-specific allometric equations for aspen, lodgepole pine, and Engelmann spruce. Used generic equation for subalpine fir and snags that could not be identified to species.
   Quantities: Measured 32 of 191 snags across all plots that could be identified to speciesDuration: Survey conducted in 2001Conditions: Field survey during 2001 growing season
   Equipment: steel tape, calinomet, species-specific allometric equations

Typical Equipment

• steel tape
• calinomet
• species-specific allometric equations

Output Measurements

• CWD volume
• CWD biomass
• decay class

Papers Using This Protocol (1)

Species Studied With This Protocol