|
Study Number: |
1086 |
|---|---|
|
Project Title: |
Recruitment potential of southern and local tree species. |
|
Investigator(s): |
James Clark E-Mail
|
Tel.
919.660.7402
|
Biographical Sketch Ines Ibanez E-Mail | Tel. 919.660.7403 |
| Affiliated Institution(s): | Duke University |
| Address: |
Duke University Department of Botany Durham, North Carolina 27708 United States |
| Study Type: | Terrestrial |
| Project Type: | Coweeta PI |
| Study Period: |
06/2003 - 08/2005 |
| Status/Notes: | |
| Funding Sources: |
National Science Foundation, DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER. |
| Abstract: |
For the Southeast US, biogeography
models predict an increase in aridity with vegetation changes from
temperate deciduous forest to southern mixed forest if there are
moderate temperature increases, or to savanna landscapes under drier
scenarios (Bachelet et al. 2001). Given this forecast, I hypothesize
that the colonization potential of coastal and more southern species in
the North Carolina Piedmont and southern Appalachians will be enhanced
by a warmer and drier climate. The nature of this vegetation shift will
mainly depend on the adaptability of these species to the specific
characteristics of the sites. Considering that recruitment is the
limiting stage for successful establishment of tree populations (Harper
1977), I propose to study recruitment limitation of potential migrant
species relative to local trees in two regions in North Carolina, the
Piedmont and the southern Appalachian mountains. Experimental
manipulations will allow the quantification of recruitment potential of
non-native tree species and their performance with respect to native
species. Field and greenhouse experiments will be used to develop and
parameterize a model of community recruitment. I will employ the model
to elucidate potential changes in forest species composition under a
suite of future climate scenarios. Both data and modeling work are
expected to improve our understanding about the mechanisms that may be
involved in restructuring communities in the face of a changing climate. Resources
for students about terms used in this study:Temperate deciduous forest biome - Source: Virginia Polytechnic and State University Coweeta site character - Source: Coweeta LTER Climate change - Source: UK Department for Environment, Food and Rural Affairs |
| Location(s), Described: |
Project 1086 planting locations are in the
vicinity of
terrestrial gradient plots
(photographs) 118, 218, and 527: 1) Nearby 118, SW exposure 2) Nearby 118 outside watershed 18, N exposure 3) Nearby 218, North 4) Ball Flats, low elevation 5) 18 gate, low elevation 6) At the fork that splits upper and lower gaps, S exposure 7) Cove before the upper gaps, outside watershed 28, N exposure 8) Nearby 527, N exposure 9) Nearby 527, outside watershed 527, S exposure |
| Location(s), Download GPS: | ArcView Shape Files (shp.): UTM, NAD83, Zone 17 | Lat/Lon |
| Location(s), Online Maps: |
 USGS Topographic-based Maps of Research Sites(Printable for fieldwork) |
| Methods/Experimental Design: |
A few week-old seedlings of the
following species will be planted at each location. Ten individuals of
each species. The total area required at each location will be 25 m2.
Plots will be marked with PVC (one foot long) and flagging tape.
Seedlings will be also flagged with tape. After two summers, seedlings will be removed
for mycorrhizal studies (roots and stems). Even if this mycorrhizal
experiment does not take place, seedlings will still be removed at the
end of the second summer.
Species codes: |
| Sampling Frequency: | Three times a year, early, mid- and late summer. |
| Data Columns: |
DataSource - who
collected the data (Mohan, Beckage, Ibanez, etc) |
| Publications: |
Ibáñez, I., Clark,
J.S. and Dietze, M. Evaluating the sources of potential migrant species.
Implications under climate change. Submitted to Global Change Biology. |
| 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) |