RT info:eu-repo/semantics/masterThesis T1 Disentangling the biogeographical origins of threatened species of the Macaronesian bryophythe flora A1 Monzón Cabrera, Felipe Lisandro K1 Ancestral area estimation K1 bryophytes K1 colonization K1 diversification K1 island biogeography K1 island conservation K1 long distance dispersal K1 Macaronesia K1 threated species AB Historical biogeographic knowledge of island colonization is unevenly spread acrossinsular regions and taxonomic groups. While in the case of vascular plants, thebiogeographical origins of a limited number of insular floras are relatively well known,there is still a long way to go to reach a similar knowledge for insular bryophyte floras.Most of this knowledge is highly concentrated in a few archipelagos distributed acrossthe Northeastern Atlantic Ocean, a region known as Macaronesia. The Macaronesianbryophyte flora has been thus object of a number of publications focussing onphylogenetic and biogeographic aspects, but aspects such as the geographic origins ofits bryophyte flora remains largely unknown. This contrast with the case of theMacaronesian angiosperm flora, for which there is mounting evidence that the mainspecies pools are inferred to have been in the Mediterrean and northern regions inEurope. In the present Master Thesis, we implement an integrative biogeographicalquantitative-approach in order to improve our understanding on the evolutionaryorigins and post-colonization diversification events of the Macaronesian bryophyteflora. Specifically, we target species groups that include threatened bryophyte taxa,which have been analysed in BEAST and BioGeoBEARS in order to estimate theircolonization and divergence times and their ancestral areas, respectively. Our resultssupport the role of the Macaronesian archipelagos as a crossroad for bryophyte speciespools from different geographic origins, with a principal influence of Palearctic, Nearcticand Neotropical regions. The dating approach also provides preliminary evidence for theapparent predominance of neoendemic species in detriment of palaeoendemic species,which departs from previous hypotheses on the origins of the Macaronesian flora, inparticular for species associated with the different types of the laurel forest. Theimplications of our findings for island plant conservation are discussed. YR 2020 FD 2020 LK http://riull.ull.es/xmlui/handle/915/19610 UL http://riull.ull.es/xmlui/handle/915/19610 LA en NO Máster Universitario en Biodiversidad Terrestre y Conservación en Islas DS Repositorio institucional de la Universidad de La Laguna RD 28-mar-2024