# Role of vegetation and coarse wood debris on soil processes and mycorrhizal mat distribution patterns at the Hi-15, Andrews Experimental Forest, 1994-1995

## Dataset

- **Database Code:** SP009

- **Title:** Role of vegetation and coarse wood debris on soil processes and mycorrhizal mat distribution patterns at the Hi-15, Andrews Experimental Forest, 1994-1995

- **Abstract:**

The main objective of this study was to determine if there were relationships between forest floor attributes such as the location of: (1) individual trees, (2) clusters of undergrowth vegetation, (3) coarse woody debris, (4) rocks and (5) topography and both soil characteristics and distribution patterns of ectomycorrhizal fungal mats. This data set includes mat, rock, wood, and moss distribution patterns (as presence or absence at each sampling node) as well as basic soil date taken at the same locations. The forest floor attributes were digitized using Esri ArcGIS. These GIS data layers are available as separate files in FSDB Database code SP029.


- **Keywords:** biological processes; inorganic nutrients; organic matter; ecosystems; mycorrhizae; Long-Term Ecological Research (LTER); ecosystem processes; inorganic nutrients; organic matter

- **Temporal coverage:** 1994-07-01 to 1995-07-31

- **Principal Investigator:** Robert P. Griffiths


## Data Entities

1. SP00901

## Entity 1: SP00901

### Attribute list

- **STCODE** — varchar, enum

FSDB Database Study code

  - **SP009** — FSDB Database Study code SP009


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

Entity number


- **SITE** — numeric(1.000000), range  1.0000  200.0000, number

Location along transect; each 5 meters apart


- **TRANSECT** — numeric(1.000000), range  1.0000  4.0000, number

Transect number; each 5 meters apart


- **POSITION** — numeric(1.000000), range  1.0000  50.0000, number

Consecutive position in transect (5m intervals)


- **MOIST** — numeric(1.000000), range  5.0000  270.0000, percent

Percent moisture


- **SOILTEMP** — numeric(0.100000), range  5.0000  12.0000, degrees Celsius

Soil temperature measured with licor


- **AIRTEMP** — numeric(0.100000), range  5.0000  20.0000, degrees Celsius

Air temperature measured with licor


- **LIGHT** — numeric(0.100000), range  0.0000  500.0000, micromoles per square meter per second

Amount of light measured with licor


- **SOM** — numeric(0.100000), range  40.0000  110.0000, percent

Soil organic matter


- **LITTER** — numeric(0.100000), range  0.0000  10.0000, centimeters

Litter depth


- **BULKDEN** — numeric(0.001000), range  0.0000  1.0000, grams per cubic centimeter

Bulk density


- **MOSS** — varchar, enum

Moss present on surface? 0 = no; 1 = yes

  - **** — No
  - **1** — Yes


- **ROCKY** — varchar, enum

Rocks present on surface? 0 = no; 1 = yes

  - **** — No
  - **1** — Yes


- **WOOD** — varchar, enum

Wood present on surface? 0 = no; 1 = yes

  - **** — No
  - **1** — Yes


- **MAT** — varchar, enum

Mat present on surface? 0 = no; 1 = yes

  - **** — No
  - **1** — Yes


- **FLDRESP** — numeric(0.100000), range  0.0000  80.0000, grams per square meter per day

Field respiration rates


- **EXAMM** — numeric(0.001000), range  0.0000  3.0000, micromoles per gram

Extractable ammonium (dry weight basis)


- **MINN** — numeric(0.010000), range  0.0000  50.0000, micromoles per gram

Mineralizable nitrogen (dry weight basis)


## Attribute Definitions

**AIRTEMP**

Air temperature measured with licor


**BULKDEN**

Bulk density


**EXAMM**

Extractable ammonium (dry weight basis)


**FLDRESP**

Field respiration rates


**FORMAT**

Entity number


**LIGHT**

Amount of light measured with licor


**LITTER**

Litter depth


**MAT**

Mat present on surface? 0 = no; 1 = yes


**MINN**

Mineralizable nitrogen (dry weight basis)


**MOIST**

Percent moisture


**MOSS**

Moss present on surface? 0 = no; 1 = yes


**POSITION**

Consecutive position in transect (5m intervals)


**ROCKY**

Rocks present on surface? 0 = no; 1 = yes


**SITE**

Location along transect; each 5 meters apart


**SOILTEMP**

Soil temperature measured with licor


**SOM**

Soil organic matter


**STCODE**

FSDB Database Study code


**TRANSECT**

Transect number; each 5 meters apart


**WOOD**

Wood present on surface? 0 = no; 1 = yes


## Enumerated Domains

### STCODE

- **SP009** — FSDB Database Study code SP009

### MOSS

- **** — No

- **1** — Yes

### ROCKY

- **** — No

- **1** — Yes

### WOOD

- **** — No

- **1** — Yes

### MAT

- **** — No

- **1** — Yes