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Fig. 3 | Annals of Forest Science

Fig. 3

From: Can epiphytic lichens of remnant Atlantic oakwood trees in a planted ancient woodland site survive early stages of woodland restoration?

Fig. 3

Chlorophyll fluorescence yields as an indicator of lichen vitality measured from thalli of Lobaria pulmonaria (LP) and L. virens (LV) growing on remnant trees (n = 14 LP thalli, n = 18 LV thalli) and ASNW trees (n = 10 LP thalli, n = 10 LV thalli) at three time-points (1 = autumn prior to removal of conifer plantation, 2 = autumn in year following conifer plantation removal, 3 = autumn 9 years after conifer plantation removal). Significant differences (p < 0.05) in CF yield from thalli on remnant trees compared to ASNW trees are shown by independent t-tests (* = Welch’s t-test performed due to heterogeneity in variance) for LP at time point 1 (t = 3.000, df =22, P = 0.008*), 2 (t = 15.200, df = 22, P = < 0.0001*) but not 3 (t = − 1.050, df = 22, P = 0.304), and for LV at time point 2 (t = 6.880, df = 26, P = < 0.0001*)  but not 1 (t = 0.088,  df = 26,  P = 0.931) or 3 (t = 0.902, df = 26, P = 0.375)

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Annals of Forest Science

ISSN: 1297-966X