Species constancy depends on plot size – a problem for vegetation classification and how it can be solved

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Current measures for distance decay in similarity of species composition are influenced by study extent and grain size (2012, background): “Dependence on grain and extent is a widely observed phenomenon for species richness patterns (e.g. Arrhenius, 1921; Palmer & White, 1994; Beierkuhnlein, 1998; Lira-Noriega et al., 2007; Dengler et al., 2009).”
Tropical tree community shifts: Implications for wildlife conservation (2010, background): “Since we are making comparisons over time and not singling out rare species, many of the concerns about plot size and number are not critical to the questions we are asking (Dengler et al., 2009).”
Plant names in vegetation databases – a neglected source of bias (2010, background): “Despite the immense potential of vegetation databases, applications beyond consistent large-scale vegetation classification (e.g. Schaminée et al. 1995; Berg et al. 2004; Chytrý 2007) are still limited (e.g. Chytrý et al. 2008).”
EcoVeg: a new approach to vegetation description and classification (2014, background): “The terminology for characteristic species combinations largely follows the Braun-Blanquet tradition (Westhoff and van der Maarel 1973, Chytrý and Tichý 2003), with the inclusion of dominant species, which is also an expression of the dominant growth form.”