Scale-dependent species-area relationship: Niche-based versus stochastic processes in a typical subtropical forest

doi:10.1111/1365-2745.13924

	Scale-dependent species-area relationship: Niche-based versus stochastic processes in a typical subtropical forest
	Ren, Haibao ; Svenning, Jens-Christian ; Mi, Xiangcheng ; Lutz, James A.; Zhou, Jinxing 4,5; Ma, Keping
	2022
发表期刊	JOURNAL OF ECOLOGY
ISSN	0022-0477
卷号	110 期号:8 页码:1883-1895
摘要	Determining the patterns and drivers of the small-scale species-area relationship (SAR) is crucial for improving our understanding of community assembly and biodiversity patterns. Niche-based and stochastic processes are two principal categories of mechanisms potentially driving SARs. However, their relative importance has rarely been quantified rigorously owing to scale dependence and the simplified niche volumes often used. In a fully mapped, 24-hm(2) plot of a typical subtropical forest, we built the SARs and well-defined niche hyper-volumes of a broad range of environmental variables at scales of 10-70 m (cell sizes). We then simulated passive sampling and partitioned the variances of the SAR slopes to disentangle these two contrasting mechanisms. We found that the small-scale SAR best followed a power-law relationship, consistent with large-scale SARs. The SAR slope declined with increasing scale; it was lower than expected under passive sampling at scales below 30 m and higher at larger scales. Environmental niches explained more (39%-64%) of the slope at larger scales, exceeding 50% at scales >30 m, and these niches always captured the majority of the structured slopes. Environmental position (environmental mean values) effects were steady in absolute strength across scales and explained most (98%-68%) of the niche effect, but this proportion decreased with increasing scale. The effect of environmental heterogeneity increased with spatial scales, starting to rise at the 30 m scale after controlling for environmental position. Excluding soil properties from analyses strongly reduced these niche effects, highlighting the importance of soils for structuring the small-scale SAR. There was also substantial stochasticity in the SAR slopes, which was only partially explained by passive sampling. Synthesis. Our results show that the small-scale SAR in the studied subtropical forest follows a power law, exhibits a scale shift in SAR slope at 30 m, and is strongly shaped by niche effects that are dominated by environmental position relative to heterogeneity. However, soil heterogeneity controls the increase in niche effect and the shift in the SAR slope with increasing spatial scales. Hence, edaphic factors can be responsible for scale dependence in small-scale SARs, thereby linking small-scale and large-scale SARs.
关键词	community assembly Gutianshan forest dynamics plot niche versus neutrality passive sampling power-law model resource availability and heterogeneity spatial effect variance partitioning
学科领域	Plant Sciences ; Ecology
DOI	10.1111/1365-2745.13924
收录类别	SCI
语种	英语
WOS关键词	BETA DIVERSITY ; HETEROGENEITY ; COEXISTENCE ; DISTRIBUTIONS ; NEUTRALITY ; ECOLOGY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000802190600001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2745
资助机构	Chinese Academy of Sciences [XDB31030000] ; Villum Fonden [16549] ; Zhejiang Qianjiangyuan Forest Biodiversity National Observation and Research Station
作者邮箱	kpma@ibcas.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：5[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/2S10CLM1/28531
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.Aarhus Univ, Dept Biol, Ctr Biodivers Dynam Changing World BIOCHANGE, Aarhus C, Denmark 3.Aarhus Univ, Sect Ecoinformat & Biodivers, Dept Biol, Aarhus C, Denmark 4.Lutz, James A.] Utah State Univ, Wildland Resources Dept, Logan, UT 84322 USA 5.Beijing Forestry Univ, Sch Soil & Water Conservat, Jianshui Res Stn, Beijing, Peoples R China 6.Minist Educ, Engn Res Ctr Forestry Ecol Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ren, Haibao,Svenning, Jens-Christian,Mi, Xiangcheng,et al. Scale-dependent species-area relationship: Niche-based versus stochastic processes in a typical subtropical forest[J]. JOURNAL OF ECOLOGY,2022,110(8):1883-1895.
APA	Ren, Haibao,Svenning, Jens-Christian,Mi, Xiangcheng,Lutz, James A.,Zhou, Jinxing,&Ma, Keping.(2022).Scale-dependent species-area relationship: Niche-based versus stochastic processes in a typical subtropical forest.JOURNAL OF ECOLOGY,110(8),1883-1895.
MLA	Ren, Haibao,et al."Scale-dependent species-area relationship: Niche-based versus stochastic processes in a typical subtropical forest".JOURNAL OF ECOLOGY 110.8(2022):1883-1895.

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