The ghost of past climate acting on present-day plant diversity:Lessons from a climate-based delimitation of the tropical alpine ecosystem  

作　　者：Martha Kandziora Juan M.Gorospe Luciana Salomon Diana L.A.Vasquez Maria Pinilla Vargas Filip Kolar Petr Sklenar Roswitha Schmickl 

机构地区：[1]Department of Botany,Faculty of Science,Charles University,Benatska 2,12801 Prague,Czech Republic [2]Institute of Botany,The Czech Academy of Sciences,Zamek 1,25243 Pruhonice,Czech Republic

出　　处：《Journal of Systematics and Evolution》2024年第2期275-290,共16页植物分类学报（英文版）

基　　金：supplied by the project“e-Infrastruktura CZ”(e-INFRA LM2018140);provided within the program Projects of Large Research,Development and Innovations Infrastructures.L.S.participated within the framework of her OP RDE project"International mobility of researchers at Charles University(MSCA-IF III)"reg.n.CZ.02.2.69/0.0/0.0/19_074/0016231;supported by the Czech Science Foundation(GACR)project no.20-10878S to R.S.and F.K.and by the European Union's Horizon 2020 research and innovation programme H2020-WF-03-2020 for the grant TropAlp(101038083);M.K.Additional support was provided by the Czech Academy of Sciences(long-term research development project no.RvO 67985939).

摘　　要：Habitat stability is important for maintaining biodiversity by preventing species extinction,but this stability is being challenged by climate change.The tropical alpine ecosystem is currently one of the ecosystems most threatened by global warming,and the flora close to the permanent snow line is at high risk of extinction.The tropical alpine ecosystem,found in South and Central America,Malesia and Papuasia,Africa,and Hawaii,is of relatively young evolutionary age,and it has been exposed to changing climates since its origin,particularly during the Pleistocene.Estimating habitat loss and gain between the Last Glacial Maximum(LGM)and the present allows us to relate current biodiversity to past changes in climate and habitat stability.In order to do so,(i)we developed a unifying climate-based delimitation of tropical alpine regions across continents,and(ii)we used this delimitation to assess the degree of habitat stability,that is,the overlap of suitable areas between the LGM and the present,in different tropical alpine regions.Finally,we discuss the link between habitat stability and tropical alpine plant diversity.Our climate-based delimitation approach can be easily applied to other ecosystems using our developed code,facilitating macro-comparative studies of habitat dynamics through time.

关 键 词：extinction risk habitat dynamics Last Glacial Maximum plant diversity REFUGIA tropical alpine 

分 类 号：Q94[生物学—植物学]