Similarity between seed rain and neighbouring mature tree communities in an old-growth temperate forest  

作　　者：Yunyun Wang Jalene M.La.Montagne Fei Lin Zuoqiang Yuan Ji Ye Xugao Wang Zhanqing Hao 

机构地区：[1]CAS Key Laboratory of Forest Ecology and Management,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of China [2]Department of Biological Sciences,DePaul University,Chicago,IL 60614,USA

出　　处：《Journal of Forestry Research》2020年第6期2435-2444,共10页林业研究（英文版）

基　　金：We gratefully thank Baizhang Song and Xichang He for collecting the seed rain data.This study was funded by the National Key Research and Development Program of China(2016YFC0500300);National Natural Science Foundation of China(31570432,31670632,41671050);by NSF Grant DEB-1745496 awarded to JML.

摘　　要：Seed distribution and deposition patterns around parent trees are strongly aff ected by functional traits and therefore infl uence the development of plant communities.To assess the limitations of seed dispersal and the extent to which diaspore and neighbouring parental traits explain seed rain,we used a 9-year seed data set based on 150 seed traps in a 25-ha area of a temperate forest in the Changbai Mountain.Among 480,598 seeds belonging to 12 families,17 genera,and 26 species were identifi ed,only 54%of the species with mature trees in the community were represented in seeds collected over the 9 years,indicating a limitation in seed dispersal.Understory species were most limited;overstory species were least limited.Species with wind-dispersed seed had the least limitation,while the lowest similarity in species richness was for animal-dispersed species followed by gravity-dispersed species;fl eshy-fruited species had stronger dispersal limitations than dry-fruited species.Generalized linear mixed models showed that relative basal area had a signifi cant positive eff ect on seed abundance in traps,while the contribution of diaspore traits was low for nearly all groups.These results suggest that tree traits had the strongest contribution to seed dispersal and deposition for all functional groups examined here.These fi ndings strengthen the knowledge that tree traits are key in explaining seed deposition patterns,at least at the primary dispersal stage.This improved knowledge of sources of seeds that are dispersed could facilitate greater understanding of seedling and community dynamics in temperate forests.

关 键 词：Seed rain Dispersal mechanisms Tree traits Basal area Changbai mountain Temperate forest 

分 类 号：S718.5[农业科学—林学]