NUMERICAL-ANALYSES OF DISTRIBUTIONS OF IBERIAN AND BALEARIC ENDEMIC MONOCOTYLEDONS

Chorological information concerning 182 taxa of monocotyledons endemic to the Iberian Peninsula and Balearic Islands was compiled and relate d to the 100 x 100km, 50 x 50km and 10x10km UTM grids. Distributions w ere analysed using multivariate methods (two-way indicator species ana lysis and detrended correspondence analysis) for each scale. Compariso n of results allows recognition of several floristic elements and sect ors (i.e. Balearic, Murcian-Almerian, south western) common to all thr ee scales, whereas other regions are assigned to different sectors dep ending on the grid size considered. As a consequence of the increase i n detail, characteristics such as number of sectors, the outline of bo undaries and continuity or fragmentation of the areas also change. The se factors are discussed.