Study Number: 

1008

Project Title:

Seed production and dispersal.

Investigator(s):

James Clark  E-Mail | Tel. 919.660.7402 | Biographical Sketch | The Clark Lab
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:

06/1991 - 06/1998
Status/Notes:

Type 1
Funding Sources: National Science Foundation, DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER.
Abstract: Long term monitoring of seed rain in mapped stands to determine seed production and dispersal.


Resources for students about terms used in this study:
Seed Traps - Source: Miami University (Ohio)
Seed Rain - Source: Smithsonian Institute of Tropical Studies
Location(s), Described: Gradient plots: 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: 20 seed traps in each of five permanent plots
Sampling Frequency: 3 to 6 times per year.
Data Columns: Site - Site number (See Locations, Described above)
Trap_No - Trap number where data collected
X_COORD - X coordinate in an 80x80 meter plot
Y_COORD - Y coordinate in an 80x80 meter plot
Y1991 - Number of Seeds per trap (0.16m2) in 1991
Y1992 - Number of Seeds per trap (0.16m2) in 1992
Y1993 - Number of Seeds per trap (0.16m2) in 1993
Y1994 - Number of Seeds per trap (0.16m2) in 1994
Y1995 - Number of Seeds per trap (0.16m2) in 1995
Y1996 - Number of Seeds per trap (0.16m2) in 1996
Y1997 - Number of Seeds per trap (0.16m2) in 1997
Y1998 - Number of Seeds per trap (0.16m2) in 1998

File Names:
1008_h_acun - Seed monitoring for Acer Rubra
1008_h_amal - Seed monitoring for Abies magnifica
1008_h_beun - Seed monitoring for Betula lenta
1008_h_caun - Seed monitoring for Castanea dentata
1008_h_cofl - Seed monitoring for Corneous florida
1008_h_litu - Seed monitoring for Liriodendum tulipifera
1008_h_nysy - Seed monitoring for Nyssa sylvatica
1008_h_oxar - Seed monitoring for Oxydendron arboreum
1008_h_piri - Seed monitoring for Pinus rigida
1008_h_quun - Seed monitoring for Quercus sp.
1008_h_rops - Seed monitoring for Robinia pseudoacacia
1008_h_saal - Seed monitoring for Sapium Marmieri
1008_h_tiam - Seed monitoring for Tilia americana
1008_h_tsca - Seed monitoring for Tsuga canadiensis
Publications:

Clark, J.S., Lewis, M., and L. Horvath. 2001. Invasion by extremes: variation in dispersal and reproduction retards population spread. The American Naturalist. 157(5): 537-554.

Clark, J.S., B. Beckage, P. Camill, B. Cleveland, J. Hille Ris Lambers, J. Lichter, J. MacLachlan, J. Mohan, and P. Wyckoff. 1999. Interpreting recruitment limitation in forests. American Journal of Botany, 86:1-16.

Clark, J.S., M. Silman, R. Kern, E. Macklin, and J. Hille Ris Lambers. 1999. Seed dispersal near and far: generalized patterns across temperate and tropical forests. Ecology 80:1475-1494.

Clark, J. S., C. Fastie, G. Hurtt, S. T. Jackson, C. Johnson, G. King, M. Lewis, J. Lynch, S. Pacala, I.C. Prentice, E. W. Schupp, T. Webb III, and P. Wyckoff. 1998. Reid's Paradox of rapid plant migration. BioScience, 48:13-24.

Clark, J. S., E. Macklin, and L. Wood. 1998. Stages and spatial scales of recruitment limitation in southern Appalachian forests. Ecological Monographs 68:213-235.

Clark, J.S. 1998. Why trees migrate so fast: Confronting theory with dispersal biology and the paleo record. American Naturalist, 152: 204-224.
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)