TDE Funded Projects

I.  ORNL Core Projects

A.  Initial Projects Funded 1993-1998

MECHANISMS BY WHICH PLANT CARBON UTILIZATION ADJUSTS TO ALTERATIONS IN THE HYDROLOGIC CYCLE

Principal Investigator: Paul J. Hanson (ORNL)
Co-investigators: N. T. Edwards, C. T. Garten, Jr., M. A. Huston, B. S. Pederson
Funding Agency: U. S. Department of Energy
Funded 1993-1998
$200K/year
 

BIOCHEMICAL MECHANISMS OF DROUGHT TOLERANCE OF FOUR DECIDUOUS SPECIES: IMPLICATIONS FOR FOREST SUCCESSION UNDER DROUGHT

Principal Investigator: Tim J. Tschaplinski (ORNL)
Co-investigator: C. A. Gunderson (ORNL)
Funding Agency: U. S. Department of Energy
Funded 1993-1998
$200K/year
 

BELOWGROUND PLANT AND MYCORRHIZAL RESPONSES TO ALTERED HYDROLOGIC INPUTS

Principal Investigators: J. Dev Joslin (TVA)
Co-investigator: E. G. O'Neill (ORNL)
Funding Agency: U. S. Department of Energy
Funded 1993-1998
$200K/year
 

BIOLOGICAL MECHANISMS BY WHICH WHOLE-PLANT WATER USE RESPONDS TO ALTERATIONS IN THE HYDROLOGIC CYCLE

Principal Investigator: Michael A. Huston (ORNL)
Co-investigator: L. W. Cooper, B. S. Pedersen, S. D. Wullschleger (ORNL)
Funding Agency: U. S. Department of Energy
Funded 1993-1998
$200K/year
 

B.  Renewal of the ORNL Core Project Funded 1998-2001
MECHANISMS OF FOREST ECOSYSTEM ADJUSTMENTS TO ALTERED PRECIPITATION - THE WALKER BRANCH THROUGHFALL DISPLACEMENT EXPERIMENT (TDE)

Coordinating Investigator: Paul J. Hanson
Co-investigators: N. T. Edwards, G.M. Gebre, M.A. Huston, D.W. Johnson, J.D. Joslin, E.G. O'Neill, D.E. Todd, T.J. Tschaplinski, and S.D. Wullschleger
Funding Agency: U. S. Department of Energy
Funded 1998-2001
~$900K/year

C.  Renewal of the ORNL Core Project 2002-2006
MECHANISMS OF FOREST ECOSYSTEM ADJUSTMENTS TO ALTERED PRECIPITATION - THE WALKER BRANCH THROUGHFALL DISPLACEMENT EXPERIMENT (TDE)

Coordinating Investigator: Paul J. Hanson
Co-investigators: M.A. Huston, D.W. Johnson, D.E. Todd and S.D. Wullschleger
Funding Agency: U. S. Department of Energy
Funded 2002-2006
Proposed 2002-2006
 

II.  Collaborative Projects -- Various Institutions

THE EFFECTS OF RAINFALL MODIFICATION ON PLANT HERBIVORE PROCESSES

Principal Investigator: Donald J. Shure, Emory University
Funding Agency: U. S. Department of Energy (NIGEC Southeastern Regional Center)


NON-HYDRAULIC SIGNALLING OF SOIL DRYING AND STOMATAL REGULATION IN A FOREST

Principal Investigator: Robert Auge, University of Tennessee
Funding Agency: U. S. Department of Energy (NIGEC Southeastern Regional Center)


TESTING AN ECOSYSTEM SIMULATION MODEL (BIOME-BGC) WITH DATA FROM THE WALKER BRANCH THROUGHFALL DISPLACEMENT EXPERIMENT

Principal Investigator: E. Raymond Hunt, Jr., University of Montana
Funding Agency: U. S. Department of Energy (NIGEC Southeastern Regional Center)


GENERALIZING RESULTS FROM THE WALKER BRANCH WATERSHED THROUGHFALL DISPLACEMENT EXPERIMENT WITH AN HIERARCHIC MODEL OF FOREST ECOSYSTEM MASS AND ENERGY EXCHANGE

Principal Investigator: Jeff Amthor, Lawrence Livermore National Laboratory
Funding Agency: DOE Program on Terrestrial Ecology and Global Change (TECO) and DOE Program for Ecosystem Research
Funded 1997 to 2001


THE EFFECTS OF CHANGING PRECIPITATION ON FOREST SOIL NUTRIENT AVAILABILITY AND WATER QUALITY

Principal Investigator: Dale Johnson, University of Nevada, Reno
Funding Agency: U.S. Department of Energy


CHARACTERIZATION OF SOIL FAUNA UNDER FOREST ECOSYSTEMS SUBJECTED TO ALTERED PRECIPITATION

Principal Investigator: Safwat Shakir, Prairie View A & M University, Texas
Funding Agency: Oak Ridge Institute for Science and Education


RESPONSES OF TREE CROWN CONDITIONS TO NATURAL AND INDUCED VARIATIONS IN THROUGHFALL

Principal Investigator: Theodore D. Leininger, USDA Forest Service, Stoneville, Mississippi
Funding Agency: USDA Forest Service

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