CWT-LTER Data Set Summary

Accession: 1121 CWT Research Theme: General Nutrient Chemistry
Contributors: Jennifer D. Knoepp, Jim Clark, Jim Vose, , , Jason Love
Title: Terrestrial Gradient Litterfall Dry Mass, Coweeta LTER, 1994-2017
Abstract: This project was started by Haines and Crossley in 1992 to compare leaf litter weights among the five gradient plots (though data from the first collections were not included in this dataset because the original dataset did not represent a complete quarter of collection). Litter is collected from ten 0.92x0.92 m leaf collectors within each of the gradient plots. Litter is collected on a quarterly basis (monthly in the autumn). The litter is then separated by category, dried, weighed, and processed in a Wiley mill for later nutrient analyses. Since the project first started, the collection process has expanded to include non-leaf litter (e.g., lichens, bark, and seeds), fine twigs (0-2.5 cm diameter), and medium twigs (2.5-10 cm diameter).
Key Words: biomass, carbon, Coweeta Hydrologic Laboratory, deciduous, leaf litter, mass, pine, Rhododendron maximum, Terrestrial Gradient, twigs
LTER Core Area: Movement of Organic Matter
CWT Themes: General Nutrient Chemistry, Multi-Disciplinary Study, Organic Matter/Decomposition
Study Type: Coweeta Terrestrial Gradient Project
Study Period: 01-Oct-1994 to 31-Dec-2017
Site References:
WS18 -- Watershed 18, North Carolina, USA
WS27 -- Watershed 27, North Carolina, USA
CWTBASIN -- Coweeta Basin, Macon County, North Carolina, USA
» View/Download data set geography: Google Maps, Google Earth
Data References: 1122

Data Table: 1121_LDM (Litterfall Dry Mass, 1994-2017, 4399)

Access: Public (released 11-Jan-2018)

Metadata: Text (ESA FLED), Basic EML, Complete EML

Data Formats: Spreadsheet CSV Text Format, EML-described Text Format, Tab-delimited Text Report with Statistical Summary, GCE Data Toolbox Format, Standard MATLAB Variables Format

Column List:

Column Name Units Type Description (hide)
1 Year YYYY integer Year collection was made
2 Collection_Year none integer The "leaf year" that begins on April 1st and ends March 31st the following year. This is how leaves should be summed. Collection year 1 began in 1994.
3 Quarter none integer The quarter that leaves were collected.
4 Plot none alphanumeric string The name of the terrestrial gradient plot. 118, 218, and 318 are located in watershed 18. 427 and 527 are located in watershed 27.
5 Trap none alphanumeric string Litter trap ID
6 Deciduous grams floating-point Mass of decidous leaves in grams.
7 Pine grams floating-point Mass of pine leaves in grams.
8 Rhododendron grams floating-point Mass of Rhododendron maximum leaves in grams.
9 Other grams floating-point Mass of other debris in grams.
10 Twigs_2.5 grams floating-point Mass of twigs <2.5 cm in diameter in grams.
11 Twigs_2.5-10 grams floating-point Mass of twigs between 2.5 and 10 cm in diameter in grams.
12 Lvs_Non_Rhodo grams floating-point Mass of leaves that are not Rhododendron maximum in grams. This category was excluded after 1995 when other leaf categories (i.e., Deciduous, Pine) were added.
13 Total_Leaves grams floating-point The sum of all leaves (Deciduous + Pine + Rhododendron).
14 Total_Lvs_&_Other grams floating-point The sum of Total_Leaves + Other.
15 Comments none alphanumeric string Notes about the collection.