Related Experiment Video
Updated: Nov 11, 2025
08:42
Forced Flowering in Mandarin Trees under Phytotron Conditions
Published on: March 6, 2019
9.2K
Spring understory herbs flower later in intensively managed forests
Franziska M Willems1, J F Scheepens1,2, Christian Ammer3
1Plant Evolutionary Ecology, Institute of Evolution and Ecology, University of Tübingen, Tübingen, Germany.
Summary
Forest management significantly impacts plant flowering times, with intensely managed forests causing a two-week delay in flowering for understory herbs compared to unmanaged areas.
Area of Science:
- Ecology
- Botany
- Environmental Science
Background:
- Phenology, the timing of biological events, is sensitive to environmental changes.
- Forest management practices alter habitat structure, microclimate, and light availability.
- Understory herbs in temperate European forests exhibit distinct phenological patterns influenced by these changes.
Purpose of the Study:
- To investigate the effects of forest management intensity on the flowering phenology of understory herbs.
- To determine the relationship between forest characteristics, microclimate, and herb phenology.
Main Methods:
- Recorded flowering phenology of 16 early-flowering herb species across 100 forest plots in Germany.
- Assessed management intensity, forest structure, and microclimatic conditions (temperature, humidity).
Main Results:
- Intensely managed forests (e.g., Norway spruce plantations) showed a delay of approximately two weeks in flowering.
- Later flowering was correlated with colder and moister microclimates, influenced by forest composition and structure.
- Conifer percentage, stand age, and structural complexity were key factors influencing microclimate.
Conclusions:
- Forest management practices demonstrably alter understory herb phenology, impacting ecological interactions.
- Microclimatic changes driven by forest management are a primary mechanism affecting plant phenology.
- Beyond climate change, anthropogenic habitat alterations are significant drivers of phenological shifts in organisms.
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