Post-Doc Research Position

Steve Leavitt sleavitt at LTRR.Arizona.EDU
Thu Oct 15 09:12:39 EST 1998

	Post-Doctoral Research Associate at the 
	Laboratory of Tree-Ring Research, JOB#12950

2-yr position with start date negotiable, but preferably starting between
January and June 1999.

Topic of research:  Ecophysiological modeling of mature Pinus 
ponderosa (1) cambial activity, (2) xylem structure, and (3) isotopic 
chemistry of the wood cellulose.  

Minimum Requirements: Ph.D. in natural sciences or system 
modelling, with a biological science emphasis in graduate program. 
Background in plant physiology with experience in computer modeling.  
Stable isotope experience a plus.  Ability to understand and apply 
FORTRAN code to an existing model (TREERING 3) simulating 
growth-controlling physiological processes in trees and the resulting 
structure in the main stem.  

Responsibilities:  Participate with a team of scientists in validating 
the model using field measurements as well as expanding the code to 
include algorithms for incorporation of varying carbon, hydrogen and 
oxygen isotopes into the cellular structure of simulated trees.  
Become familiar with the model and its relevance to dendro-
chronological investigations.  Help assemble available climatic, 
isotopic, and cell structure data, and make changes in model 
parameters necessary to represent the particular study area. Apply 
the model to conditions in the selected study area. Use available 
research data to test and validate portions of the model. Adapt and 
apply the model to "What if ?" questions. Document all changes and 
refine existing documentation for future modeling work at the 
Laboratory of Tree-Ring Research.

This is a unique opportunity to participate in an emerging new field 
of simulation modeling applied to dendrochronology, and to work with 
more than 50 faculty, staff and students at the Laboratory of 
Tree-Ring Research, University of Arizona.  Send letter of interest 
referring to Job #12950, CV, and 3 letters of recommendation by Dec. 
1, 1998, to Prof. Steven W. Leavitt, Lab. of Tree-Ring Research, 105 
W. Stadium, University of Arizona, Tucson, AZ 85721. 
(sleavitt at ltrr.arizona.edu; phone: 520-621-1608) 
Review will begin Dec. 1 and continue until position is filled.

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