Spatial pattern in Anthyllis cytisoides shrubland on abandoned land in southeastern Spain

摘要: Abstract. Univariate and bivariate distribution patterns of small shrubs on abandoned land in semi-arid southeastern Spain were investigated by second-order spatial analysis (Ripley's K-function). All (Anthyllis cytisoides subdominant Artemisia barrelieri) either randomly distributed or clumped at scales 0.25 - 1.0 m. The pattern shown A. alone changed from to random with decreasing density. Pattern demographic data suggest a successive replacement barrelieri, which had high proportions (44 86 %) dead shrubs, the dominant cytisoides. In two three plots there was positive association between barrelieri scale 0.5 third plot, believed represent more advanced stage colonization, negative (repulsion) species, presumably as result interspecific competition Dead present spring 1994 all plots. Living positively associated m, suggesting that died intraspecific clumps. shrubland previously dominated is changing increasing biomass ground cover.