Origin and evolution of the Micronesian biota: Insights.from moiecular phylogenies and biogeography reveal longdistance dispersal scenarios and founder-event speciation  

作　　者：Else Demeulenaere Stefanie M.Ickert-Bond 

机构地区：[1]Center for Island Sustainabilty,University of Guam,Mangilao,96913 GU,USA [2]Deparment of Biology and Wildlife,University of Alaska Fairbanks,Fairbanks,99775 AK,USA

出　　处：《Journal of Systematics and Evolution》2022年第5期973-997,共25页植物分类学报（英文版）

摘　　要：Micronesian islands taxa show high endemism rates,but very little is known about their biogeographical histories.The lack of systematic biogeography is mainly due to insuficient phylogenetic research in Micronesia.With the recent increase in published molecular biogeographic data,we were able to,for the frst time,answer fundamental biogeography questions by reviewing and analyzing numerous geological,ecological,and evolutionary studies.This review,in addition to providing an overview of Micronesian geological history,confirmed the importance of long-distance dispersal mechanisms and founder-event speciation,and morphological and physiological adaptations of plant propagules to cross vast stretches of ocean by wind,ocean currents,bird,or bat dispersal.These adaptations to habitat and geological features,including reef types,determined colonization success as well as inland dispersal and speciation mechanisms.We further identified the source areas of the Micronesian biota and reconstructed historical dispersal scenarios:a dominant Austro-Melanesian dispersal scenario,an Indo-Malaysian connecting to the Austro-Melanesian dispersal scenario,and a Neotropical American and an African dispersal scenario toward Micronesia.Most generic origins were estimated between the Eocene and the Miocene and dispersed to Micronesia between the Miocene and the Pleistocene.

关 键 词：endemic founder-event speciation island biogeography LDD scenarios MICRONESIA 

分 类 号：Q94[生物学—植物学]