TD028
Mass of forest floor litter from cores in reference stands and inventory plots in the Pacific Northwest, 1992 to 2003

CREATOR(S): Mark E. Harmon

PRINCIPAL INVESTIGATOR(S): Mark E. Harmon

ORIGINATOR(S): Mark E. Harmon

OTHER RESEARCHER(S): Jay M. Sexton, Becky Fasth, Suzanne M. Remillard

DATA SET CONTACT PERSON: Mark E. Harmon

ABSTRACTOR: Mark E. Harmon

METADATA CREATION DATE:

11 May 2005

MOST RECENT METADATA REVIEW DATE:

4 Mar 2013

KEYWORDS:

Inorganic nutrients, Organic matter, inorganic nutrients, organic matter, forest floor, logs

PURPOSE:

These data provide an inventory of the mass of forest floor organic matter stored within various forest types. This data is used to determine total organic matter, carbon, and nutrient stores in forests.

METHODS:

Experimental Design - TD028 :

Description: Stands were chosen to represent a forest type and/or successional stage. In the Early Succession Synthesis Area and Wind River NPE studies fine woody debris quadrats were already established for fine woody debris collection (TD30) and these were used to determine forest floor core location. At Torrey-Charleton, cores were taken along a transect within a burned area. Cores were taken along a transect within the reference stands.

Field Methods - TD028 :

Description: For the ESSA and WRE studies quadrats of 1x1 meter were established along a transect. Within this quadrat one core sample was taken in each of the four corners and then pooled. For the reference stand study, five cores were taken along a transect and then pooled. For the Torrey-Charleton burn study, ten cores were taken along a transect and not pooled. Sample wet weight and oven dry (55C) weight were taken, and then samples were ashed to determine the amount of mineral contamination.

SUPPLEMENTAL INFORMATION:

Reference data set

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Select reference stands, natural research areas, USFS cut units in Oregon and Washington.

ELEVATION_MINIMUM (meters):

61

ELEVATION_MAXIMUM (meters):

1726

MEASUREMENT FREQUENCY:

irregular

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

notPlanned

CURRENTNESS REFERENCE:

Ground condition