Journal
JOURNAL OF BRYOLOGY
Volume 27, Issue -, Pages 261-268Publisher
MANEY PUBLISHING
DOI: 10.1179/174328205X70010
Keywords
bryophytes; rarity; population dynamics; life history strategies
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Most studies on population ecology of bryophytes have involved common species. However, some studies have compared life history strategies in rare and common species. We review the life history strategies (life expectancy, sexual and asexual reproduction, spore production, spore size and dispersal) for species that are rare in relation to pattern and persistency of suitable habitat patches. In particular, we discuss the dynamics on two levels, within and among localities, for different categories of rare species. We predict that most rare species will be found to have restricted dispersal capacities but higher than average life expectancies of local subpopulations. Natural rarity is distinguished from human-induced rarity and species rare for the latter reason are distinguished as 'threatened'.
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