Plant Ecology

, Volume 190, Issue 1, pp 97–107

Effects of water level and temperature on performance of four Sphagnum mosses

  • Bjorn J.M. Robroek
  • Juul Limpens
  • Angela Breeuwer
  • Matthijs G.C. Schouten
Original Paper

DOI: 10.1007/s11258-006-9193-5

Cite this article as:
Robroek, B.J., Limpens, J., Breeuwer, A. et al. Plant Ecol (2007) 190: 97. doi:10.1007/s11258-006-9193-5

Abstract

To evaluate the effects of changes in water level and temperatures on performance of four Sphagnum mosses, S. magellanicum, S. rubellum, S. imbricatum and S. fuscum were grown at two water levels,  −5 cm and  −15 cm, and at two temperatures, 15°C and 20°C. These species differ in their position along the microtopographical gradient and in their geographical distribution. Height increment, subcapitulum bulk density, biomass production, capitulum water content and cumulative evaporation were measured. Height increment and biomass production of S. magellanicum was lower at low water table than at high water table, whereas height increment and biomass production of S. rubellum, S. imbricatum and S. fuscum were unaffected. Height increment of S. magellanicum, S. rubellum and S. imbricatum was higher at high temperature than at low temperature. Biomass production of only S. magellanicum and S. rubellum was higher at high temperature than at low temperature, corresponding with their more southern distribution. Cumulative evaporation of S. magellanicum and S. rubellum was lower at low water table and could be explained by hampered water transport towards the capitula. We conclude that changes in water table and temperature may alter the Sphagnum composition on raised bogs, which may result in changes to important ecosystem processes. Therefore, it is important that species composition and changes therein are taken into account when evaluating global change effects on raised bog ecosystems.

Keywords

Biomass productionClimate changeRaised bogsPeatlandsSphagnumWater table

Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • Bjorn J.M. Robroek
    • 1
  • Juul Limpens
    • 1
  • Angela Breeuwer
    • 1
  • Matthijs G.C. Schouten
    • 1
    • 2
  1. 1.Nature Conservation and Plant Ecology group, Department of Environmental SciencesWageningen UniversityWageningenThe Netherlands
  2. 2.National Forest Service of The NetherlandsDriebergenThe Netherlands