Ungulate control of facilitation cascade dynamics in oak savannas Dr. Brian R. Silliman Duke University

135 Duke Marine Lab Rd. Duke University Marine Lab Beaufort North Carolina 28516-9721 USA

brian.silliman@duke.edu https://nicholas.duke.edu/people/faculty/silliman https://orcid.org/0000-0001-6360-650X Georgia Coastal Ecosystems LTER Project

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

gcelter@uga.edu https://gce-lter.marsci.uga.edu/ Dr. Brian R. Silliman Duke University

135 Duke Marine Lab Rd. Duke University Marine Lab Beaufort North Carolina 28516-9721 USA

brian.silliman@duke.edu https://nicholas.duke.edu/people/faculty/silliman https://orcid.org/0000-0001-6360-650X Principal investigator Dr. Christine Angelini University of Florida

Department of Environmental Engineering Sciences University of Florida Gainesville Florida 32611 USA

christine.angelini@essie.ufl.edu http://www.angeliniecologylab.com/the-lab.html https://orcid.org/0000-0002-6669-5269 Co-investigator 2026

The goal of this project is to develop an understanding of how grass canopy structure (mediated by high densities of ungulate grazers on Sapelo) and Tillandsia deposition interact and influence patterns in the distribution and abundance of terrestrial arthropods. This work will be performed by Christine Holdredge as part of her dissertation research.

forest biomass land cover population density population diversity temperature LTER NSF GCE insects plants botany disturbance patterns plant ecology population ecology terrestrial insect ecology Overall geographic extent of the research project -81.307978 -81.176185 31.536369 31.380150 2010-05-01 2012-08-30

NSF pre-doctoral fellowship to Christine Holdredge, UF

estuary marsh complex Sapelo Island - Sapelo Island on the Southeast Georgia Coast -81.307978 -81.176185 31.536369 31.380150 GIS file (ArcGIS shapefile) https://gce-lter.marsci.uga.edu/private/registration/files/gis/GCE-6-2011_GIS_GCE-6-2011_GPS_GPS_Coordinate_for_Research_Project_shapefile.zip GPS data file (Trimble, Excel) https://gce-lter.marsci.uga.edu/private/registration/files/gps_data/GCE-6-2011_GPS_GPS_Coordinate_for_Research_Project.docx Map (Google Earth KML/KMZ or map image) https://gce-lter.marsci.uga.edu/private/registration/files/maps/GCE-6-2011_Maps_Angelini_ungulate_study_2011.kmz

Sites will be established in a field behind the Reyolds Mansion, beneath oaks that are behind the Mansion, as well as in King's Field on Marsh Landing Rd and adjacent to the large oaks just south of Long Tabby 31°23'55.00"N, 81°16'27.51"W (8 cages and 8 control plots) 31°24'45.12"N, 81°17'26.32"W (same as above) 31°25'49.85"N, 81°16'58.12"W (same as above) See additional GPS coordinates on the attached file for the new experiment to be set up in May 2011 in King's Field

Experimental ungulate exclusion cages (livestock fencing and 2" x 4" x 5' fence posts)

I will be suction sampling arthropods from 1m3 areas and will be harvesting aboveground plant material from 30cm2 plots once per year