Table 1

Table 3. Summary of long-term experiments established in the LEF that will be continued by LTER researchers. Experiments in bold are discussed in the text.

Experiment (Initiation Date)	Researchers	Goals	Funding source	Citations
Controls on Primary Productivity (1989-90)	X. Zou, J. Zimmerman D.J. Lodge	Describe interactive effects of nutrient availability and hurricane disturbance on productivity in tabonuco and cloud forest.	NSF-CREST, NSF-LTER, NSF (pending).	Zimmerman et al. (1995), Walker et al. (1996)
Effect of wood decomposition on soil organic carbon (SOC; 1998)	D.J. Lodge	Compare SOC and N-availability under logs felled by Hurricanes Hugo and Georges	USDA Forest Service	Zimmerman et al. (1995)
Experimental Forest Biomass Removal (1989)	W. Silver F. Scatena	Describe experimental removal of forest biomass and hurricane disturbance on soil nutrient pools.	USDA Forest Service, NSF-LTER	Silver and Vogt (1994), Silver 1996
Experimental Treefalls (1995)	F. Scatena	Describe the effect of treefall gaps on dynamics of understory vegetation	USDA Forest Service
Riparian wood decomposition (Hypothesis 1B – 1995)	D., K. Vogt, A. Covich J. Lodge F. Scatena	Measure effects of coarse woody debris on linked terrestrial - stream ecosystem processes.	NSF and NSF-LTER	Zimmerman et al. (1995), Vogt et al. (1996)
Food Web Exclosures (Hypothesis 2A – 1999)	R. Waide M. Willig	Describe impacts of secondary consumers on arthropod communities, herbivory, and litter decomposition	NSF-LTER UPR	Reagan and Waide (1996)
Earthworm Exclosures (Hypothesis 2D - 1998)	X. Zou	Describe the effects of experimental removal of earthworms on litter decomposition and soil phosphorus dynamics	NASA, NSF-LTER
Removal of Landslide Pioneer Vegetation (Hypothesis 2E – 1997)	L. Walker	Describe impacts of removing colonizing vegetation in landslides on soil characteristics	NSF-LTER	Walker et al. (1996)