Phylogenetic and climatic constraints drive flowering phenological patterns in a subtropical nature reserve  

作　　者：Nan-Cai Pei WJohn Kress Bu-Feng Chen David LErickson Khoon Meng Wong Jin-Long Zhang Wan-Hui Ye Zhong-Liang Huang Dian-Xiang Zhang 

机构地区：[1]Forest Ecosystem Station of the Pearl River Delta,State Forestry Administration,Research Institute of Tropical Forestry,Chinese Academy of Forestry,682 Guangshan Road 1,Tianhe District,Guangzhou 510520,China [2]Department of Botany,MRC-166,National Museum of Natural History,Smithsonian Institution,P.O.Box 37012,Washington,DC 20013-7012,USA [3]Singapore Botanic Gardens,1 Cluny Road,Singapore 259569,Singapore [4]Flora Conservation Department,Kadoorie Farm and Botanic Garden,Lam Kam Road,Tai Po,NT,Hongkong,China [5]South China Botanical Garden,Chinese Academy of Sciences,723 Xingke Road,Tianhe District,Guangzhou 510650,China

出　　处：《Journal of Plant Ecology》2015年第2期187-196,共10页植物生态学报（英文版）

基　　金：NSF-China(31200471);Special Fund for Forest Scientific Research in the Public Welfare(20140430105);Ministry of Finance of China(RITFYWZX201208);China Scholarship Council(201303270006);CFERN&GENE Award Funds on Ecological Paper to N.C.P.;Ministry of Science and Technology of China(2005DKA21401,2013FY111200)to D.X.Z.

摘　　要：Aims Exploring flowering patterns and detecting processes are essential when probing into the nature of reproductive traits during the life history and the interactions among different evolutionary clades.such patterns are believed to be influenced by many factors,but quantifying these impacts at the community-level remains poorly understood.Methods We investigated the flowering patterns based on long-term her-barium records in a given area from subtropical forest regions in southern China.We obtained 5258 herbarium voucher specimens collected from the Dinghushan National Nature reserve(DNNr)belonging to 166 families,943 genera and 2059 species and exam-ined the month when each species was flowering during the period 1920-2007.Important Findings The results showed that plants flowered sequentially almost through-out the whole year,showing the characteristics of subtropical evergreen broad-leaved forests.Flowering spectrums of the entire flora and the four life forms exhibited a clear unimodality that is probably typical of subtropical forest communities.Flowering pat-terns of the DNNr were positively correlated with mean rainfall,mean air temperature and mean sunshine duration.median flowering dates of the 38 large species-rich families ranged from early april to late august;25 families exhibited significant unimodal distribution patterns,whereas the remaining families were unclear or bimodal.median flowering dates of the 10 most species-rich genera ranged from middle may to later July.While the results are consist-ent with climatic factors playing a general role in flowering patterns,median flowering dates varied significantly among species-rich families and genera,suggesting that phylogenies could provide spe-cific constraints in subtropical forests.

关 键 词：environmental driver flowering phenology phylogenetic effect reproductive trait subtropical forest 

分 类 号：Q94[生物学—植物学]