Drought has inconsistent effects on seed trait composition despite their strong association with ecosystem drought sensitivity

doi:10.1111/1365-2435.14165

	Drought has inconsistent effects on seed trait composition despite their strong association with ecosystem drought sensitivity
	Luo, Wentao ; Griffin-Nolan, Robert J.; Felton, Andrew J.; Yu, Qiang 3; Wang, Hongyi 4; Zhang, Hongxiang 5; Wang, Zhengwen ; Han, Xingguo6 ; Collins, Scott L.; Knapp, Alan K.
	2022
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	36 期号:11 页码:2690-2700
摘要	Seeds provide the basis of genetic diversity in perennial grassland communities and their traits may influence ecosystem resistance to extreme drought. However, we know little about how drought effects the community functional composition of seed traits and the corresponding implications for ecosystem resistance to drought. We experimentally removed 66% of growing season precipitation for 4 years across five arid and semi-arid grasslands in northern China and assessed how this multi-year drought impacted community-weighted means (CWMs) of seed traits, seed trait functional diversity and above-ground net primary productivity (ANPP). Experimental drought had limited effects on CWM traits and the few effects that did occur varied by site and year. For three separate sites, and in different years, drought reduced seed length and phosphorus content but increased both seed and seed-coat thickness. Additionally, drought led to increased seed functional evenness, divergence, dispersion and richness, but only in some sites, and mostly in later years following cumulative effects of water limitation. However, we observed a strong negative relationship between drought-induced reductions in ANPP and CWMs of seed-coat thickness, indicating that a high abundance of dominant species with thick seeds may increase ecosystem resistance to drought. Seed trait functional diversity was not significantly predictive of ANPP, providing little evidence for a diversity effect. Our results suggest that monitoring community composition with a focus on seed traits may provide a valuable indicator of ecosystem resistance to future droughts despite inconsistent responses of seed trait composition overall. This highlights the importance of developing a comprehensive seed and reproductive traits database for arid and semi-arid grassland biomes. Read the free Plain Language Summary for this article on the Journal blog.
关键词	climate resistance community-weighted traits drought sensitivity functional diversity grasslands net primary productivity seed trait
学科领域	Ecology
DOI	10.1111/1365-2435.14165
收录类别	SCI
语种	英语
WOS关键词	FUNCTIONAL DIVERSITY ; PLANT ; FRAMEWORK ; SOIL ; DYNAMICS ; ECOLOGY ; SHIFTS ; MODEL
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000853318300001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	National Natural Science Foundation of China [31971465, 32171549, 41971069] ; Liaoning Provincial Science and Technology Plan Projects [2020JH1/10300006] ; Strategic Priority Research Program of Chinese Academic of Sciences [XDA23080401] ; Youth Innovation Promotion Association CAS [2020199] ; National Science Foundation [DEB-1856383]
作者邮箱	why021@163.com ; zhanghongxiang@iga.ac.cn
引用统计	被引频次：7[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/2S10CLM1/28570
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 Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang, Peoples R China 2.Griffin-Nolan, Robert J.] Santa Clara Univ, Dept Biol, Santa Clara, CA 95053 USA 3.Felton, Andrew J.] Chapman Univ, Schmid Coll Sci & Technol, Orange, CA USA 4.Beijing Forestry Univ, Sch Grassland Sci, Beijing, Peoples R China 5.Heilongjiang Bayi Agr Univ, Daqing, Peoples R China 6.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun, Peoples R China 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 8.Collins, Scott L.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA 9.Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 10.Knapp, Alan K.] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Luo, Wentao,Griffin-Nolan, Robert J.,Felton, Andrew J.,et al. Drought has inconsistent effects on seed trait composition despite their strong association with ecosystem drought sensitivity[J]. FUNCTIONAL ECOLOGY,2022,36(11):2690-2700.
APA	Luo, Wentao.,Griffin-Nolan, Robert J..,Felton, Andrew J..,Yu, Qiang.,Wang, Hongyi.,...&Knapp, Alan K..(2022).Drought has inconsistent effects on seed trait composition despite their strong association with ecosystem drought sensitivity.FUNCTIONAL ECOLOGY,36(11),2690-2700.
MLA	Luo, Wentao,et al."Drought has inconsistent effects on seed trait composition despite their strong association with ecosystem drought sensitivity".FUNCTIONAL ECOLOGY 36.11(2022):2690-2700.

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