Chin J Plan Ecolo ›› 2015, Vol. 39 ›› Issue (5): 501-507.DOI: 10.17521/cjpe.2015.0048

• Orginal Article • Previous Articles     Next Articles

Effects of water level and light intensity on capsule production dynamics of Sphagnum capillifolium

YUAN Min, BU Zhao-Jun*(), LIU Chao, MA Jin-Ze, WANG Sheng-Zhong   

  1. State Environmental Protection Key Laboratory for Wetland Conservation and Vegetation Restoration, Institute for Peat and Mire Research, Northeast Normal University, Changchun 130024, China
  • Received:2015-02-02 Accepted:2015-03-31 Online:2015-05-01 Published:2015-05-26
  • Contact: Zhao-Jun BU
  • About author:

    # Co-first authors

Abstract: Aims

Our objective was to analyze the effect of water levels and light intensities on capsule production dynamics of Sphagnum to lay the foundation for further research on its reproductive phenology.


Our selected Sphagnum capillifolium in this study. We set up a simulation experiment within a growth chamber and grew moss communities in polystyrene containers. Water levels and light intensities were altered to create different environmental conditions. Gametophores and capsule production were observed and recorded.

Important findings

Seta length, shoot height and capsule cracking rate increased when water level increased. Under high light intensities, capsule diameter and capsule cracking rate were higher. Water level and light intensity had an interactive effect on shoot height increment and capsule diameter. Water level and light intensity had no effect on capsule production rate. Increase in both water level and light intensity led to earlier spore release. Reproductive phenology advance can reduce the abortive risk of spores by avoiding detrimental environment conditions such as drought. After capsules dehisced, reproductive shoots were able to accelerate height growth to avoid shading to lay a foundation for further reproduction in the future.

Key words: Sphagnum, water level, light intensity, phenology