Vegetatio

, Volume 61, Issue 1, pp 231–240

On the ecophysiology of Halimione portulacoides

  • Arne Jensen
Ecophysiological Studies

DOI: 10.1007/BF00039829

Cite this article as:
Jensen, A. Vegetatio (1985) 61: 231. doi:10.1007/BF00039829

Abstract

Growth rate and salt accumulation were investigated in experiments on Halimione portulacoides with seven sodium chloride treatments, in water culture. The growth of Halimione was found to be stimulated by moderate, 85–170 mM NaCl, levels of salinity, but increasingly depressed by salinities from 410–690 mM NaCl, which is comparable to salinities in salt marshes during the growing season.

Using the same technique, growth rate, chloride and nitrogen uptake experiments at four different sodium chloride and nitrate treatment levels were conducted, in order to study the effect of nitrogen and salt. At 8 mM NaCl in the growth medium growth was depressed at 16.2 mM nitrate treatment levels. At 137 mM, 410 mM and 684 mM of NaCl growth was stimulated by increasing levels of nitrogen. The results of these experiments are discussed in relation to the nitrogen and salt conditions prevailing in Halimione portulacoides salt-marsh communities.

Keywords

ChlorideChlorophyllGrowthHalimioneNitrateSalinity

Copyright information

© Dr W. Junk Publishers 1985

Authors and Affiliations

  • Arne Jensen
    • 1
  1. 1.Botanical InstituteUniversity of AarhusRisskovDenmark