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Table 3 Statistical analyses of species data

From: Successional trends and processes on a glacial foreland in Southern Iceland studied by repeated species counts

Items Sample year Site A (2002) Site B (1982) Site C (1954) Site D (1945) Site E (1938) Site F (1960) Site G (1890–1904) Site H (pre-1890) Site I (pre-1890)
SR 2007 5 13 11 16 16 16 17 12 9
2014 8 19 17 18 10 21 9 12 7
SD 2007 3 5.6 6.8 9.8 6.4 9.8 7.6 4.6 3.2
2014 4 8.8 7.2 8.6 5.8 9.4 2.8 4.6 3.0
SE 2007 0.65 0.42 0.43 0.60 0.43 0.63 0.36 0.40 0.22
2014 0.56 0.51 0.59 0.45 0.68 0.47 0.33 0.48 0.28
β A 2007/2014 7 11 11 12 12 12 10 7 6
t test 2007/2014          
 VC ns 0.03 ns ns ns 0.026 0.04 ns ns
 Moss ns 0.024 ns 0.006 ns ns ns ns ns
 Low shrubs ns ns ns ns ns ns ns ns ns
  1. SR species richness (vascular plants), SD species density (species/m2), SE species evenness, VC vegetative cover, βA = absolute species turnover, ns (not significant) indicates p > 0.05