Shift of seed mass and fruit type spectra along longitudinal gradient: high water availability and growth allometry

doi:10.5194/bg-18-655-2021

	Shift of seed mass and fruit type spectra along longitudinal gradient: high water availability and growth allometry
	Yu, Shunli ; Wang, Guoxun ; Katz, Ofir 1; Li, Danfeng ; Wang, Qibing ; Yue, Ming 2; Liu, Canran 3
	2021
发表期刊	BIOGEOSCIENCES
ISSN	1726-4170
卷号	18 期号:2 页码:655-667
摘要	Propagule traits vary among biomes along geographical gradients such as longitude, but the mechanisms that underlie these variations remain unclear. This study aims to explore seed mass variation patterns of different biome types along a longitudinal gradient and their underlying variation mechanisms by involving an in-depth analysis on the variation of seed mass, fruit type spectra, growth forms and dispersal mode spectra in Inner Mongolia and northeastern China. Plant community characterization and seed collection were conducted in 26 sites spreading over five vegetation types and covering 622 species belonging to 66 families and 298 genera. We found there are significantly declining trends for mean seed mass, vertebrate-dispersed species richness and fleshy-fruited species richness along a longitudinal gradient from forests to desert grasslands. However, we also found the lowest average seed mass and the smallest proportion of species dispersed by vertebrates occurring at typical grasslands in the five biomes. The variations of average seed mass display high congruence with transition of growth form spectra. The selection for these propagule attributes is driven mainly by climatic factors such as precipitation, temperature, soil moisture and evaporation, as well as by internal biotic factors such as growth forms, canopy coverage and leaf area (Ackerly and Donoghue, 1998). A hypothesis was provided that environmental factors and botanical traits that favor greater water availability lead to emergence (or speciation) of species with large seeds or fleshy fruits with high water content. Due to greater water availability and increasing leaf area, much more photosynthate (photosynthesis production) and allometric growth then ultimately increase the biome average seed mass from west to east. Phylogenetic signal or diversity are not found to be significantly involved in the effect on the patterns. A novel mechanistic framework and mathematical model are provided to expound seed variation among species or biomes.
学科领域	Ecology ; Geosciences, Multidisciplinary
DOI	10.5194/bg-18-655-2021
收录类别	SCI
语种	英语
WOS关键词	GEOGRAPHIC-VARIATION ; PHYLOGENETIC SIGNAL ; FLESHY FRUITS ; PLANT TRAITS ; SIZE ; DISPERSAL ; PATTERNS ; BIOGEOGRAPHY ; GERMINATION ; HYPOTHESES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000614265000002
出版者	COPERNICUS GESELLSCHAFT MBH
文献子类	Article
出版地	GOTTINGEN
EISSN	1726-4189
资助机构	National Natural Science Foundation of China [40771070, 41171041] ; Beijing Natural Science Foundation [5092015]
作者邮箱	shunliyu@ibcas.ac.cn
作品OA属性	gold, Green Submitted
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26484
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Dead Sea & Arava Sci Ctr, Elat, Israel 3.Northwest Univ, Coll Life Sci, Xian, Peoples R China 4.Rylah Inst Environm Res, Dept Environm Land Water & Planning, Melbourne, Vic 3084, Australia
推荐引用方式 GB/T 7714	Yu, Shunli,Wang, Guoxun,Katz, Ofir,et al. Shift of seed mass and fruit type spectra along longitudinal gradient: high water availability and growth allometry[J]. BIOGEOSCIENCES,2021,18(2):655-667.
APA	Yu, Shunli.,Wang, Guoxun.,Katz, Ofir.,Li, Danfeng.,Wang, Qibing.,...&Liu, Canran.(2021).Shift of seed mass and fruit type spectra along longitudinal gradient: high water availability and growth allometry.BIOGEOSCIENCES,18(2),655-667.
MLA	Yu, Shunli,et al."Shift of seed mass and fruit type spectra along longitudinal gradient: high water availability and growth allometry".BIOGEOSCIENCES 18.2(2021):655-667.

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