Study Number: 

2008

Project Title:

Soil phosphorus fractionation.

Investigator(s):

David C. Coleman  Biographical Sketch  (Retired)
Christina Wright

 Note: Researcher is retired. For further information regarding this project, please contact:

Coweeta LTER
Coweeta Hydrologic Laboratory
3160 Coweeta Lab Road
Otto, North Carolina 28763 USA
Telephone: 828.524.2128 | FAX: 828.369.6768
Affiliated Institution(s): University of Georgia
Address: University of Georgia
Ecology Annex
Athens Georgia 30602-2360  USA
Study Category: Riparian
Project Type: Type 1
Study Period:

06/1996 - 08/1997
Status/Notes:

No data as of April, 2003.
Funding Source(s):

National Science Foundation, Grants DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER.
Abstract: Soils were sequentially extracted to determine labile phosphorus in the forms of resin P, bicarbonate P, and microbial P using a slight modification of the procedure described by Hedley et at. 1982. Soil phosphorus levels were examined in response to two disturbance events: removal of the rhododendron understory at site 1 and hurricane damage at site 2. Overall levels of soil phosphorus at Coweeta were low, for all labile forms of P measured.
Location(s), Described: Watershed 55.
Location(s), Download GPS: ArcView Shape Files (shp.):  UTM, NAD83, Zone 17 | Lat/Lon
Note: Files originated from Project 2007 conducted at Watershed 55.
Location(s), Online Map(s): USGS Topographic-based Maps of Research Sites
 (Printable for fieldwork)
Note: Map originated from Project 2007 conducted at Watershed 55.
Methods/Experimental Design: Watershed 55 is divided into two plots which contain three transects each, located 1, 5, and 15 meters upslope from the stream channel. The rhododendron removal occurred in August 1995 and windthrow caused by hurricane Opal occurred in October 1995. Soil phosphorus measurements began in June 1996 and continued on a seasonal basis (March, June, September, December) through September 1997. Samples were collected along the three transects at both sites. Soil cores were divided into 0-5 and 5-10 cm depths, all roots, macrofauna, and discernible plant material were removed by hand. Approximately 1g wet weight of soil was sequentially extracted using a slight modification of the method described by Hedley et al, 1982. Soil phosphorus fractions determined by this method were: resin P (bioavailable P), bicarbonate P (labile, inorganic P), microbial biomass P. All samples were analyzed using a technicon colorimetric autoanalyzer. By sampling these sites seasonally following the rhododendron removal and hurricane damage we hope to better understand the response of soil P to human and natural disturbance events.
Sampling Frequency: Seasonally: March, June, September, and December.
Data Columns: Not applicable. Note: Dissertation serves as data for this project.
Publications:

Wright, Christina Jane. 1998. The effects of man-made and natural disturbance events upon soil microbial biomass, soil fauna, soil nutrient cycling, and litter decomposition in the southern Appalachians. Ph.D. Dissertation. University of Georgia.
Data Restrictions: Users must adhere to the Coweeta LTER Data Policy.
Metadata: EML Format (XML Schema) | Information about EML
Data Downloads: Note: Dissertation serves as data for this project.

Wright, Christina Jane. 1998. The effects of man-made and natural disturbance events upon soil microbial biomass, soil fauna, soil nutrient cycling, and litter decomposition in the southern Appalachians. Ph.D. Dissertation. University of Georgia.