Research Article
Competitiveness of the Exotic Silphium perfoliatum against the Native Urtica dioica: A Field Experiment
Table 1
Precipitation sum and mean air temperature (based on 24 h mean values at a height of 2 m) over the growing seasons (April to August). Data were measured in the Ecological Botanical Gardens by the Micrometeorology group of the University of Bayreuth.
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