RT info:eu-repo/semantics/article
T1 The anagenetic world of spore-producing land plants
A1 Patiño, Jairo
A1 Carine, Mark
A1 Fernández-Palacios, José María
A1 Otto, Rüdiger
A1 Schaefer, Hanno
A1 Vanderpoorten, Alain
K1 anagenesis
K1 bryophytes
K1 cladogenesis
K1 diversification
K1 endemism
K1 niche conservatism
K1 oceanic islands
K1 pteridophytes
AB A fundamental challenge to our understanding of biodiversity is to explain why somegroups of species diversify, whereas others do not. On islands, the gradual evolution of a newspecies from a founder event has been called ‘anagenetic speciation’. This process does notlead to rapid and extensive speciation within lineages and has received little attention.  Based on a survey of the endemic bryophyte, pteridophyte and spermatophyte floras ofnine oceanic archipelagos, we show that anagenesis, as measured by the proportion of generawith single endemic species within a genus, is much higher in bryophytes (73%) and pteridophytes(65%) than in spermatophytes (55%).  Anagenesis contributed 49% of bryophyte and 40% of endemic pteridophyte species, butonly 17% of spermatophytes. The vast majority of endemic bryophytes and pteridophytes arerestricted to subtropical evergreen laurel forests and failed to diversify in more open environments,in contrast with the pattern exhibited by spermatophytes.  We propose that the dominance of anagenesis in island bryophytes and pteridophytes is aresult of a mixture of intrinsic factors, notably their strong preference for (sub)tropical forestenvironments, and extrinsic factors, including the long-term macro-ecological stability ofthese habitats and the associated strong phylogenetic niche conservatism of their floras.
PB John Wiley & Sons
YR 2013
FD 2013
LK http://riull.ull.es/xmlui/handle/915/17840
UL http://riull.ull.es/xmlui/handle/915/17840
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 13-may-2024