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DIRT: Detrital Input, Removal, and Transfer (University of Michigan Biological Station) - LTSE

Relationships
Subnetworks: 
DIRT - Detritus Input and Removal Treatments
Data Holder: 
Research Group, Nadelhoffer
Location:
United States
Latitude: 45.000000
Longitude: -84.000000
Background
Continent: 
North America
Website: 
http://www.eeb.lsa.umich.edu/eeb/labs/knute/DIRT/HF/
Year LTSE Began: 
2004
On-going or Terminated?: 
On-going
Comments: 
UMBS DIRT LTSE/ 1050 Kraus Natural Science Building/ 830 N. University Ave. / Ann Arbor, MI 48109-1048 archive - Sampling conducted prior to treatments for baseline data (year 0) followed by first year sampling. Samples collected every five years thereafter.
Environment
Annual Precipitation (mm): 
400-800
Mean Annual Soil Temperature (C): 
Cryic/Frigid: <8C
Soil moisture regime: 
Udic
Is atmospheric deposition chemistry monitored?: 
Yes
Dominant plant species (latin genus and species): 
Canopy: Populus grandidentata, Betula papyrifera, Quercus rubra, Acer rubrum, Acer saccharum Sub Canopy: Saplings of canopy species plus Pinus strobus, Fagus grandifolia Ground Flora: Seedings of canopy and sub canopy species plus Amelanchier sp., Pteridium aquilinum, Vaccinium sp, Gaultheria procumbens
Landuse: 
Forestry
Ecoregion: 
Cool Temperate
Landform (general description): 
High glacial outwash plain.
Slope (%): 
0-2%
Elevation (m): 
200-500
Geological material: 
"Glacial outwash sand over Middle Paleozoic (Silurian, Devonian, and Mississippian) sedimentary rocks"
Experimental Design
Design (short description): 
Treatments are replicated (n = 3). Plot size is 5 m x 5 m. TREATMENTS: REFERENCE--Normal litter inputs are allowed. For all other treatments forest floor vegetation is excluded by clipping in addition to treatment descriptions. CONTROL--Normal litter inputs are allowed. NO LITTER--Aboveground inputs are excluded from plots by a shade-cloth covering during autum leaf fall. DOUBLE LITTER--Aboveground leaves/needles are doubled by adding litter from NO LITTER plots. NO ROOTS--Roots are excluded by inserting barriers around plots in backfilled trenches. NO INPUTS--Combined treatments from NO LITTER and NO ROOTS (above). FERTILIZATION--10 kg/ha/yr N added quarterly as aqueous solution of NH4Cl DOUBLE LITTER FERT--Combined treatments from DOUBLE LITTER and FERTILIZATION (above). WOOD--Aboveground Carbon inputs are doubled by adding chipped Populus grandidentata in 3-year increments.
Permanent plot area (square meters): 
10-100
Number of permanent plots: 
>20
Soil Classification
soilorder: 
Spodosol
Soil taxa (ex, Great Group of Soil Taxonomy): 
Sandy, mixed, frigid Entic Haplorthod
Soil/Data Archive
Vegetative samples archived: 
Yes
Soil solid samples archived: 
Yes
Samples from multiple depths: 
Yes
Sample frequency: 
Every 5 years
Year of first sampling for archive: 
2004
Soil Solid Data
pH and acidity: 
Yes
Organic Carbon: 
Yes
Nitrogen: 
Yes
Bulk Density: 
Yes
Soil Water Data
Dissolved organic carbon: 
Yes
Other macronutrients: 
Yes
Soil Gas Data
Surface Fluxes: 
Yes
Vegetation Data
Biomass above ground: 
Yes
Biomass below ground: 
Yes
Macronutrient contents: 
Yes