HOW TO ESTIMATE INUNDATION-INDUCED TREE MORTALITY
  USING RIVER WATER LEVEL DATA
  
  Yao Yin, The University of Tennessee, 569 Dabney
  Hall, Knoxville, TN 37996.
  
  I have developed a method for estimating the
  probability of tree mortality due to inundation
  using river water level data.  The probability is
  defined as a function of inundation duration and
  size of the tree.  The method includes a formula to
  determine the threshold water level of inundation
  using historical river water level data, and
  formulas to estimate the probability of tree
  mortality based on inundation duration and tree
  size.  Inundation duration is defined as the total
  number of days when river water level is at or
  above the threshold water level between January 1
  and December 31. Parameters in the tree mortality
  probability formulas were estimated by applying
  linear logistic regression on data collected in
  1994 and 1995 at seven reaches along the Upper
  Mississippi River.  The formulas were tested
  against data collected in 1994 and 1995 at one
  reach on the Illinois River. Test results indicate
  that these formulas have potentials for
  applications in other river reaches.  Formulas are
  now available for Acer saccharinum, Fraxinus
  pennsylvanica, Ulmus americana, Populus deltoides,
  Acer negundo, Celtis occidentalis, Morus rubra,
  Salix nigra, and Betula nigra. 
  
  
  Keywords: floodplain tree, Mississippi River,
  inundation, mortality
  
  Presenting author: Yao Yin, 575 Lester Avenue,
  Onalaska, WI 54650.  Telephone: (608)-783-7550
  extension 53. Fax: (608) 783-8058. E-mail:
  yao_yin@nbs.gov
  
  Type of presentation: platform only
  
  The author is NOT a student.