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Table 1 Mean values and standard deviation of the most significant environmental variables according to the multivariate linear model. Values of the River habitat index (IHF), D. geminata coverage, coverage categories described by Diaz et al. (2013) and the significant Mann-Whitney U test (***: p < 0.001, **: p < 0.01; *: p < 0.05; ns: non-significance)

From: Effect of Didymosphenia geminata coverage on the phytobenthic community in an Andean basin of Chile

  Site Month Cond μS/cm Sig-Dif (M-W) Temp C Sig-Dif (M-W) TP μg/L Sig-Dif (M-W) IHF D. geminata % Coverage categories
Non-invaded LIU Dec 50.90 ± 1.10   18.93 ± 0.63   3.27 ± 0.05   74 0  
Invaded MAR Dec 49.35 ± 0.55 ** 16.15 ± 0.15 ** 2.68 ± 0.04 *** 60 91 ± 4.47 Massive growth
TAL Dec 53.62 ± 0.72 ** 13.33 ± 0.08 ** 3.15 ± 0.04 * 64 48 ± 3.96 Medium growth
LOL Dec 57.70 ± 0.46 ** 17.37 ± 0.20 ** 2.67 ± 0.02 *** 64 65 ± 5.04 High growth
Non- invaded LIU Jan 52.70 ± 2.00   21.45 ± 0.78   5.15 ± 0.03   79 0  
Invaded MAR Jan 45.53 ± 1.40 ** 20.75 ± 0.49 * 2.30 ± 0.01 *** 60 87 ± 5.15 Massive growth
TAL Jan 52.78 ± 0.44 * 16.00 ± 0.20 ** 1.66 ± 0.04 *** 61 29 ± 5.42 Medium growth
LOL Jan 58.68 ± 0.56 ** 18.63 ± 0.21 ** 2.73 ± 0.01 *** 60 57 ± 5.56 High growth
Non-invaded LIU Feb 55.20 ± 1.20   15.42 ± 2.30   4.76 ± 0.03   77 0  
Invaded MAR Feb 50.33 ± 1.03 ** 14.48 ± 0.21 ** 4.17 ± 0.04 *** 58 72 ± 9.89 High growth
TAL Feb 59.33 ± 0.82 ** 15.47 ± 0.10 ns 2.51 ± 0.01 *** 68 13 ± 3.95 Absent
LOL Feb 65.50 ± 2.43 ** 14.05 ± 0.20 ** 4.37 ± 0.01 *** 63 27 ± 7.88 Medium growth
Non-invaded LIU Mar 52.00 ± 0.01   13.26 ± 3.00   1.69 ± 0.01   81 0  
Invaded MAR Mar 48.50 ± 1.38 ** 13.03 ± 0.35 ** 1.63 ± 0.04 Ns 67 39 ± 8.67 Medium growth
TAL Mar 54.67 ± 0.52 ** 9.24 ± 0.03 ** 1.35 ± 0.02 *** 72 4 ± 3.37 Absent
LOL Mar 60.50 ± 0.55 ** 9.89 ± 0.03 ** 1.39 ± 0.03 *** 69 12 ± 5.37 Absent
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