Higher photosynthetic capacity and different functional trait scaling relationships in erect bryophytes compared with prostrate species

doi:10.1007/s00442-015-3484-2

	Higher photosynthetic capacity and different functional trait scaling relationships in erect bryophytes compared with prostrate species
	Wang, Z; Liu, X; Bao, WK; Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, POB 416, Chengdu 610041, Sichuan, Peoples R China.
刊名	OECOLOGIA
	2016
卷号	180 期号:2 页码:359-369
关键词	Growth Form Life Form Light Interception Nutrient Distribution Photosynthetic Performance
DOI	10.1007/s00442-015-3484-2
产权排序	1
文献子类	Article
英文摘要	Ecophysiological studies of bryophytes have generally been conducted at the shoot or canopy scale. However, their growth forms are diverse, and knowledge of whether bryophytes with different shoot structures have different functional trait levels and scaling relationships is limited. We collected 27 bryophyte species and categorised them into two groups based on their growth forms: erect and prostrate species. Twenty-one morphological, nutrient and photosynthetic traits were quantified. Trait levels and bivariate trait scaling relationships across species were compared between the two groups. The two groups had similar mean values for shoot mass per area (SMA), light saturation point and mass-based nitrogen (N-mass) and phosphorus concentrations. Erect bryophytes possessed higher values for mass-based chlorophyll concentration (Chl(mass)), light-saturated assimilation rate (A (mass)) and photosynthetic nitrogen/phosphorus use efficiency. N-mass, Chl(mass) and A (mass) were positively related, and these traits were negatively associated with SMA. Furthermore, the slope of the regression of N-mass versus Chl(mass) was steeper for erect bryophytes than that for prostrate bryophytes, whereas this pattern was reversed for the relationship between Chl(mass) and A (mass). In conclusion, erect bryophytes possess higher photosynthetic capacities than prostrate species. Furthermore, erect bryophytes invest more nitrogen in chloroplast pigments to improve their light-harvesting ability, while the structure of prostrate species permits more efficient light capture. This study confirms the effect of growth form on the functional trait levels and scaling relationships of bryophytes. It also suggests that bryophytes could be good models for investigating the carbon economy and nutrient allocation of plants at the shoot rather than the leaf scale.
学科主题	Environmental Sciences & Ecology
资助项目	中国科学院山地生态恢复与生物资源利用重点实验室
语种	英语
资助机构	National Natural Science Foundation of China [31400187] ; National Natural Science Foundation of China [31400187] ; National Natural Science Foundation of China [31400187] ; National Natural Science Foundation of China [31400187]
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/28148]
专题	成都生物研究所_生态研究
通讯作者	Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, POB 416, Chengdu 610041, Sichuan, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Z,Liu, X,Bao, WK,et al. Higher photosynthetic capacity and different functional trait scaling relationships in erect bryophytes compared with prostrate species[J]. OECOLOGIA,2016,180(2):359-369.
APA	Wang, Z,Liu, X,Bao, WK,&Bao, WK .(2016).Higher photosynthetic capacity and different functional trait scaling relationships in erect bryophytes compared with prostrate species.OECOLOGIA,180(2),359-369.
MLA	Wang, Z,et al."Higher photosynthetic capacity and different functional trait scaling relationships in erect bryophytes compared with prostrate species".OECOLOGIA 180.2(2016):359-369.