, Volume 86, Issue 4, pp 594–597

Ecophysiological differences among juvenile and reproductive plants of several woody species

  • Lisa A. Donovan
  • James R. Ehleringer
Short Communications

DOI: 10.1007/BF00318327

Cite this article as:
Donovan, L.A. & Ehleringer, J.R. Oecologia (1991) 86: 594. doi:10.1007/BF00318327


Photosynthetic and water relations characteristics of small juvenile and large reproductive plants were investigated during one growing season for four woody species native to Red Butte Canyon, Utah, USA: Acer negundo, Artemisia tridentata, Chrysothamnus nauseosus, and Salix exigua. For all species, juvenile plants differed from reproductive plants in at least one of the following characters: water potential, stomatal conductance, photosynthetic rate, or water-use efficiency. Late in the growing season, mortality occurred within juvenile plants (apparently due to a lack of water), but not within reproductive plants. The observed differences between juvenile and reproductive classes are discussed in terms of environment, development, and mortality selection.

Key words

Development Ecophysiology Environment Mortality selection Water-use efficiency 

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Lisa A. Donovan
    • 1
  • James R. Ehleringer
    • 1
  1. 1.Department of BiologyUniversity of UtahSalt Lake CityUSA

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