报道了3个浙江种子植物新分类群:异形玉叶金花Mussaenda shikokiana Makino f.anomala(H.L.Li)J.P.Li,S.J.Ying et Z.H.Chen新等级与新组合变型,石山薜荔Ficus pumila L.var.calcarea G.Y.Li,W.Y.Xie et Z.H.Chen新变种,玉果山菅Dianell...报道了3个浙江种子植物新分类群:异形玉叶金花Mussaenda shikokiana Makino f.anomala(H.L.Li)J.P.Li,S.J.Ying et Z.H.Chen新等级与新组合变型,石山薜荔Ficus pumila L.var.calcarea G.Y.Li,W.Y.Xie et Z.H.Chen新变种,玉果山菅Dianella ensifolia(L.)Redoutéf.leucocarpa J.P.Wu,Y.F.Zhang et Z.H.Chen新变型,其中异形玉叶金花为华东野生植物分布新记录。凭证标本保存于浙江自然博物院(ZM)。展开更多
Endemism of lineages lies at the core of understanding variation in community composition among geographic regions because it reflects how speciation,extinction,and dispersal have influenced current distributions.Here...Endemism of lineages lies at the core of understanding variation in community composition among geographic regions because it reflects how speciation,extinction,and dispersal have influenced current distributions.Here,we investigated geographic patterns and ecological drivers of taxonomic and phylogenetic endemism of angiosperm genera across the world.We identify centers of paleo-endemism and neo-endemism of angiosperm genera,and show that they are mostly located in the Southern Hemisphere in tropical and subtropical regions,particularly in Asia and Australia.Different categories of phylogenetic endemism centers can be differentiated using current climate conditions.Current climate,historical climate change,and geographic variables together explained~80%of global variation in taxonomic and phylogenetic endemism,while 42-46%,1%,and 15%were independently explained by these three types of variables,respectively.Thus our findings show that past climate change,current climate,and geography act together in shaping endemism,which are consistent with the findings of previous studies that higher temperature and topographic heterogeneity promote endemism.Our study showed that many centers of phylogenetic endemism of angiosperms,including regions in Amazonia,Venezuela,and west-central tropical Africa that have not previously been identified as biodiversity hotspots,are missed by taxon-based measures of endemism,indicating the importance of including evolutionary history in biodiversity assessment.展开更多
文摘报道了3个浙江种子植物新分类群:异形玉叶金花Mussaenda shikokiana Makino f.anomala(H.L.Li)J.P.Li,S.J.Ying et Z.H.Chen新等级与新组合变型,石山薜荔Ficus pumila L.var.calcarea G.Y.Li,W.Y.Xie et Z.H.Chen新变种,玉果山菅Dianella ensifolia(L.)Redoutéf.leucocarpa J.P.Wu,Y.F.Zhang et Z.H.Chen新变型,其中异形玉叶金花为华东野生植物分布新记录。凭证标本保存于浙江自然博物院(ZM)。
文摘Endemism of lineages lies at the core of understanding variation in community composition among geographic regions because it reflects how speciation,extinction,and dispersal have influenced current distributions.Here,we investigated geographic patterns and ecological drivers of taxonomic and phylogenetic endemism of angiosperm genera across the world.We identify centers of paleo-endemism and neo-endemism of angiosperm genera,and show that they are mostly located in the Southern Hemisphere in tropical and subtropical regions,particularly in Asia and Australia.Different categories of phylogenetic endemism centers can be differentiated using current climate conditions.Current climate,historical climate change,and geographic variables together explained~80%of global variation in taxonomic and phylogenetic endemism,while 42-46%,1%,and 15%were independently explained by these three types of variables,respectively.Thus our findings show that past climate change,current climate,and geography act together in shaping endemism,which are consistent with the findings of previous studies that higher temperature and topographic heterogeneity promote endemism.Our study showed that many centers of phylogenetic endemism of angiosperms,including regions in Amazonia,Venezuela,and west-central tropical Africa that have not previously been identified as biodiversity hotspots,are missed by taxon-based measures of endemism,indicating the importance of including evolutionary history in biodiversity assessment.
