The DIRT Project

(Detritus Input, Removal, & Transfer)

 


KEY TO TREATMENTS AND ABBREVIATIONS

 

Harvard Forest DIRT Plots (Abbreviation: HF)

 

Treatment

Abbreviation

Description

Double litter

2X

Receives ambient above-ground litter plus litter from OX plot 

No litter

X

Above-ground litter inputs are excluded and are added to 2X plot 

No roots

T

Root inputs are excluded by means of lined trench 

No inputs

TOX

Combination of NO LITTER and NO ROOTS treatments 

O/A-less

O/A-

O and A horizons initially replaced with B horizon material 

Control

C

Receives normal above- and below-ground inputs

 

 

Block

Position

I

downslope

II

midslope

III

upslope

 

 

 

 

 

 

 

 

 

 

 

 

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Harvard Forest LTER