Rice, Stanley A. .
Testing ecological hypotheses using wood porosity measurements.
Early-successional trees grow faster than late-successional trees. Faster growth requires greater water transport and therefore porosity. We therefore expect early-successional trees to have wood that is more porous. Botany students at Southeastern Oklahoma State University compared early-successional trees such as boxelder and cottonwood with late-successional trees such as black hickory and post oak. Plant taxonomy students from the Wheaton College Science Station (Black Hills, SD) compared some of the same early-successional trees with late-successional trees such as bur oak. Porosity was determined by microscopic observation of vessels in thin sections of wood from twigs. Wood of early-successional trees was more porous than that of late-successional trees. Measurements of density were also made, but the results were unclear, probably because twig density is influenced by many factors other than wood porosity.
1 - Southeastern Oklahoma State University, Biological Sciences, Box 4027, Durant, Oklahoma, 74701-0609, USA
Presentation Type: Paper
Location: Superior A (Cliff Lodge)
Date: Monday, August 2nd, 2004
Time: 9:15 AM