|
Study Number: |
1006 |
|---|---|
|
Project Title: |
Seed bank densities across an environmental gradient. |
|
Investigator(s): |
James Clark E-Mail
|
Tel.
919.660.7402
|
Biographical Sketch |
The Clark
Lab Janneke Hille Ris Lambers Email | Tel. 206.543.7389 |
| Affiliated Institution(s): | Duke University |
| Address: |
Duke University
Department of Biology Durham, North Carolina 27708 USA |
| Study Type: | Terrestrial |
| Project Type: | Coweeta Core Research |
| Study Period: |
06/1995 - 6/1998 |
| Status/Notes: | |
| Funding Sources: | National Science Foundation, DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER. |
| Abstract: | We determined the distribution of seed bank densities of woody perennial species across 5 permanent vegetation plots. We found that the distribution of seeds in the soil was determined by the spatial location of parent trees at all sites, but that absolute densities varied significantly between plots. |
| Location(s), Described: |
Watershed 18
and
Watershed 27,
permanent vegetation plots 118, 218, 318, 427, 527. See Project Summary Sheet 1048 and Terrestrial Gradient Sites: Characteristics (photographs) for detailed information about plot locations and physical descriptions, respectively. |
| 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: | Densities of viable seeds in soil was determined across five permanent vegetation plots, in 4 years. Soil cores were taken to 2 inches deep (including litter), soil was stratified at 4 degrees Celsius for 6 weeks, spread out over sterile potting soil, and left in the greenhouse with plenty of light and water. Seedlings were censused as they emerged, censuses continued for 8 mo. Each soil core is 3.5 inches in diameter. |
| Sampling Frequency: | Annually 06/1995 - 6/1998 |
| Data Columns: |
Plot - One of 5 permanent
vegetation plots: 118, 218, 318, 427, 527 Year - Year sampled Sample_No - 167 X_Location - X coordinate on 80 x 80 meter plot Y_Location - Y coordinate on 80 x 80 meter plot BEUN - Numbers of viable seeds of Betula spp. NYSY - Numbers of viable seeds of Nyssa sylvatica RUSP - Numbers of viable seeds of Rubus spp. LITU - Numbers of viable seeds of Liriodendron tulipifera RHMA - Numbers of viable seeds of Rhododendron maximum VISP - Numbers of viable seeds of Vitis spp. ACRU - Numbers of viable seeds of Acer rubrum ROPS - Numbers of viable seeds of Robinia psuedoacacia SAAL - Numbers of viable seeds of Sassafras albidum |
| Publications: |
Clark, James S.; Silman,
Miles; Kern, Ruth; Macklin, Eric; Hille Ris Lambers, Janneke. 1999.
Seed
Dispersal Near And Far: Patterns Across Temperate And Tropical Forests. Ecology. 80(5):
1475-1494. Hille Ris Lambers, Janneke; Clark, James S. 2005. The benefits of seed banking for red maple (Acer rubrum): maximizing seedling recruitment. Canadian Journal Forestry Research. 35: 806-813. Hille Ris Lambers, Janneke; Clark, James S. 2003. Effects of dispersal, shrubs, and density-dependent mortality on seed and seedling distributions in temperate forests. Canadian Journal Forestry Research. 33:783-795. Hille Ris Lambers, Janneke; Clark, James S.; Beckage, Brian. 2002. Density-dependent mortality and the latitudinal gradient in species diversity. Nature. 417: 732-735. Hille Ris Lambers, Janneke. 2001. Dormancy, Dispersal, and Density-Dependent Mortality: Coexistence of Temperate Forest Tree Species. Ph.D. Dissertation. Duke University . |
| Data Restrictions: | Users must adhere to the Coweeta LTER Data Policy. |
| Metadata: | EML Format (XML Schema) | Information about EML |
| Data Downloads: |
Microsoft® Excel
(.xls) Text Comma Delimited (.csv) DBase (.dbf) |