Community Ecology

, Volume 13, Issue 2, pp 129–136 | Cite as

Similarity between grassland vegetation and seed bank shifts with altered precipitation and clipping, but not warming

  • S. R. WhiteEmail author
  • E. W. Bork
  • J. Karst
  • J. F. CahillJr.


Similarity between seed bank and aboveground vegetation is frequently studied in order to better understand how community composition is affected by factors such as disturbance and succession. Grassland plant communities are known to be sensitive to shifts in precipitation and increases in temperature associated with climate change, but we do not know if and how these factors interact to affect the similarity between seed bank and aboveground vegetation. Also unknown is how the impact of grazing, the dominant land-use in grasslands, will interact with climatic conditions to affect similarity. We manipulated precipitation and temperature, and cut vegetation (as a proxy for grazing) at a grassland site for three years. Percent cover of aboveground vegetation was estimated in the third year, and compared with persistent seed bank samples taken in the year prior from the same plots. Similarity increased with reduced precipitation, was unresponsive to warming, and decreased with clipping. The aboveground community responded strongly to the treatments, while the seed bank community did less so, suggesting similarity responses were largely driven by changes in aboveground vegetation. Because of the importance of the seed bank in vegetation regeneration, understanding the relationship between seed bank and aboveground vegetation will improve our understanding of plant community dynamics under climate change and varied management (grazing) intensities.


Disturbance Global change Grazing Plant ecology Rangeland 



Indicator Species Analysis


Open Top Chamber


USDA, NRCS. 2011. The PLANTS Database (, 14 April 2011). National Plant Data Center, Baton Rouge, LA 70874-4490 USA 


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© Akadémiai Kiadó, Budapest 2012

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Authors and Affiliations

  • S. R. White
    • 1
    Email author
  • E. W. Bork
    • 2
  • J. Karst
    • 1
  • J. F. CahillJr.
    • 1
  1. 1.Department of Biological SciencesUniversity of AlbertaEdmontonCanada
  2. 2.Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonCanada

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