A novel multiple approach to the biodiversity evaluation - Example of the fractionated community of bugs (Heteroptera)

During 1986-1998, systematic investigations 4 were carried out on arachnoen tomocoenoses within birch stands in six localities of air-polluted region o f Northern Bohemia (the Czech Republic). As a model group for biodiversity estimation, 8383 bug specimens belonging to 110 species were used. On the b asis of identity indices and by cluster analysis, qualitative and quantitat ive differences of taxocoenoses were proven. Differences were also found in biodiversity measures (biodiversity indices, analysis of cumulative specie s-abundance curve, species-abundance models) between individual localities, nle zoophagous part of community is noted for a higher evenness than the p hytophagous species group; regarding biodiversity, both community component s do not depend on each other. Biodiversity measures were divided oil the b asis of correlation analysis into three groups: species richness indices, s pecies-abundance heterogeneity measures and dominance based indices. Advant ages and limits of individual biodiversity measures are discussed.