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The Arasbaran Protected Area is an important but little studied nature reserve in NW Iran. In the past habitat heterogeneity and biodiversity have been threatened by over-exploitation; in the future depopulation may lead to partial abandonment. The soil seed bank was examined to see whether there are sufficient species represented as persistent seeds to reconstitute the vegetation in the event of...
A recent study of the distribution of 139 British scarce plants (Quinn et al., 1994, Biol. Conserv., 70, 149-57) found that degree of aggregation was correlated with habitat, dispersal ability (in space) and pollination type. Our reanalysis using a different classification of dispersal in space and new data on dispersal in time or space. We argue that present distributions of scarce plants are largely...
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