|
Study Number: |
1009 |
|---|---|
|
Project Title: |
Functional aspects of protist diversity and abundance in soils. |
|
Investigator(s): |
David C. Coleman
Biographical Sketch
(Retired) Sina Adl 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 Type: | Terrestrial |
| Project Type: | Coweeta Core Research |
| Study Period: |
01/2000 - 01/2002 |
| Status/Notes: |
Type 1 Researcher has chosen not to submit data. Project closed. |
| Funding Sources: | National Science Foundation, DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER. |
| Abstract: |
In this study we address the
following questions with a natural environment (Watershed 13): (1) What
are the protist colonisers in disturbed soil? Which are the late
succession species? (2) What kinds of interactions are there between the rhizosphere community and soil protists?
(3) To what extent does the
litter and derived organic matter affect species composition? (4)
What is
the time scale of recovery after disturbance? We hope to be able to
address the following issues also from the data collected. Do certain
groups of species become active together, under similar habitat changes,
or is the community dynamics more stochastic? One would predict that at
low species biodiversity the community structure is more predictable,
and at high diversity more stochastic. In this study, organic-free
plots, litter exclusion and root exclusion plots are prepared to reduce
species diversity. Soil protist activity consists of successions of
groups of species becoming active then inactive in succession.
|
| Location(s), Described: | Watershed 13, off trail, left side of stream. |
| Location(s), Download GPS: | ArcView Shape Files (shp.): UTM, NAD83, Zone 17 | Lat/Lon |
| Location(s), Online Maps: |
 USGS
Topographic Maps of research sites for this project (Printable for fieldwork) |
| Methods/Experimental Design: | The experimental plots consist of nine holes (75cm diameter) dug to about 30-50 cm. There are three treatments. First series of three: soil dug out and returned. Second series, soil dug out, sterilized in lab by autoclave, and returned. In third series, soil dug out and replaced by organic-matter-free sand. One of each plot type are covered with mesh to exclude litter deposit. One of each plot type are lined by mesh to exclude roots as well as mesh to exclude litter. One set of plots are left without exclusion. The plot containing sand as well as root and litter exclusion will contain wheat grass debris as litter. |
| Sampling Frequency: | Monthly. |
| Data Columns: | Researcher has chosen not to submit data. Project closed. |
| Publications: |
Hunter, Mark D.; Adl,
Sina; Pringle, Catherine M.; Coleman, David C. 2003.
Relative
effects of macroinvertebrates and habit on the chemistry of litter
during decomposition. Pedobiologia. 47: 101-115. Adl, M.S.,
Maharning, A., Nesbitt, J.E., Hunter, M.D. and Coleman, D.C. Protozoa
succession and composition in forest leaf litter bags vary with time and
leaf chemistry. Poster. Soil Ecology Society Meeting. Moab, Utah.
May 2007. |
| Data Restrictions: | Users must adhere to the Coweeta LTER Data Policy. |
| Metadata: | EML Format (XML Schema) | Information about EML |
| Data Downloads: | Researcher has chosen not to submit data. Project closed. |
