Ground vegetation monitoring in Swiss forests: comparison of survey methods and implications for trend assessments

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Thimonier, A., Kull, P., Keller, W., Moser, B., & Wohlgemuth, T. (2011). Ground vegetation monitoring in Swiss forests: comparison of survey methods and implications for trend assessments. Environmental Monitoring and Assessment, 174(1), 47-63. http://doi.org/10.1007/s10661-010-1759-y