Neighbour Origin and Ploidy Level Drive Impact of an Alien Invasive Plant Species in a Competitive Environment.

stoebe and its neighbouring communities In the competition containers, biomass of EU neighbouring community explained a highly significant and substantial amount of the variation in biomass of C . stoebe (R 2 = 0.39, Δlog-likelihood = 4.91, P < 0.001; Fig 4a ), but NA neighbouring community did not explain variation in biomass of C . stoebe (R 2 = 0.05, Δlog-likelihood = -13.96, P = 0.48; Fig 4b ).

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We analysed the Relative Efficiency Index (REI an indicator of mixture dynamics independent of initial plant size) among all chosen species (the data are from the previous pairwise competition experiment), and found no significant REI differences among EU species (χ 2 = 5.38, P = 0.51) and marginally significant REI differences among NA species (χ 2 = 12.01, P = 0.06; cf.

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