# Comparision of native litter species occurring at the Andrews Experimental Forest to LIDET standard species, 1993-2003

## Dataset

- **Database Code:** TD029

- **Title:** Comparision of native litter species occurring at the Andrews Experimental Forest to LIDET standard species, 1993-2003

- **Abstract:**

The primary objective of this study is to examine the control that substrate quality and climate have on patterns of long-term decomposition and nitrogen accumulation in above- and below-ground fine litter. Of particular interest will be to examine the degree these two factors control the formation of stable organic matter and nitrogen after extensive decay.


- **Keywords:** decay rates; litterbags; decomposition; litterfall; nitrogen; phosphorus; organic matter; leaf litter; organic matter

- **Temporal coverage:** 1993-01-01 to 2003-01-01

- **Principal Investigator:** Mark E. Harmon


## Data Entities

1. TD02901
2. TD02902

## Entity 1: TD02901

### Attribute list

- **STCODE** — varchar, freetext

FSDB data code


- **FORMAT** — numeric(1.000000), range  1.0000  1.0000, number

Entity number


- **SITE** — varchar, enum

Site where the samples were incubated

  - **HJA** — Andrews Experimental Forest (HJA)


- **SPECIES** — varchar, enum

The species of the litter

  - **ACCI** — Acer circinatum
  - **ACMA** — Acer macrophyllum
  - **CONU** — Cornus nuttallii
  - **PIMO** — Pinus monticola
  - **PSME** — Pseudotsuga menziesii
  - **RHMA** — Rhododendron macrophyllum


- **TAG_NUM** — numeric(1.000000), range  1.0000  9999.0000, number

The unique tag number on litter bag


- **TIMEOUT** — numeric(1.000000), range  1.0000  6.0000, number of years

The number of years the sample was incubated in the field


- **REP** — numeric(1.000000), range  1.0000  6.0000, number

The repetition, four per each site


- **DATEOUT** — numeric(1.000000), range  19931026.0000  19931026.0000, date as year, month, day

The date the litter bag was placed out in the field


- **DATEIN** — numeric(1.000000), range  19941024.0000  19991020.0000, date as year, month, day

The date the litter bag was harvested from the field


- **FWW** — numeric(0.010000), range  0.0000  50.0000, grams

Final field wet weight of the sample


- **FOW** — numeric(0.010000), range  0.0000  50.0000, grams

Final oven dry weight of the sample


- **IODW** — numeric(0.010000), range  0.0000  20.0000, grams

Initial oven dry weight of the sample


- **MC** — numeric(1.000000), range  11.0000  556.0000, number

Moisture correction factor


## Entity 2: TD02902

### Attribute list

- **STCODE** — varchar, freetext

FSDB data code


- **FORMAT** — numeric(1.000000), range  2.0000  2.0000, number

Entity number


- **SPECIES** — varchar, enum

The species of the litter

  - **ACCI** — Acer circinatum
  - **ACMA** — Acer macrophyllum
  - **CONU** — Cornus nuttallii
  - **PIMO** — Pinus monticola
  - **PSME** — Pseudotsuga menziesii
  - **RHMA** — Rhododendron macrophyllum


- **TIMEOUT** — numeric(1.000000), range  1.0000  6.0000, number of years

The number of years the sample was incubated in the field


- **AVG_PRM** — numeric(0.010000), range  0.0000  100.0000, percent

Percent remaining mass averaged across four repetitions by species and time


- **STD_ERR** — numeric(0.010000), range  0.0000  100.0000, percent

Standard error of average


## Attribute Definitions

**AVG_PRM**

Percent remaining mass averaged across four repetitions by species and time


**DATEIN**

The date the litter bag was harvested from the field


**DATEOUT**

The date the litter bag was placed out in the field


**FORMAT**

Entity number


**FOW**

Final oven dry weight of the sample


**FWW**

Final field wet weight of the sample


**IODW**

Initial oven dry weight of the sample


**MC**

Moisture correction factor


**REP**

The repetition, four per each site


**SITE**

Site where the samples were incubated


**SPECIES**

The species of the litter


**STCODE**

FSDB data code


**STD_ERR**

Standard error of average


**TAG_NUM**

The unique tag number on litter bag


**TIMEOUT**

The number of years the sample was incubated in the field


## Enumerated Domains

### SITE

- **HJA** — Andrews Experimental Forest (HJA)

### SPECIES

- **ACCI** — Acer circinatum

- **ACMA** — Acer macrophyllum

- **CONU** — Cornus nuttallii

- **PIMO** — Pinus monticola

- **PSME** — Pseudotsuga menziesii

- **RHMA** — Rhododendron macrophyllum