气候变化领域集成服务门户(CCPortal): Spatial Signatures of Biological Soil Crusts and Community Level Self-organization in Drylands

CCPortal

DOI	10.1007/s10021-023-00898-2
	Spatial Signatures of Biological Soil Crusts and Community Level Self-organization in Drylands
	Kozar, Daniel; Weber, Bettina; Zhang, Yu; Dong, Xiaoli
发表日期	2024
ISSN	1432-9840
EISSN	1435-0629
起始页码	27
结束页码	3
卷号	27 期号:3
英文摘要	While vascular plants in drylands can spatially self-organize and persist under climatic stress through gradual changes in patch attributes, dryland patch dynamics largely assumes bare soil between plants. Biological soil crusts (BSCs) are communities living in the soil surface of drylands and mediate water redistribution in space. BSCs often occur in patches of light cyanobacteria and dark-mixed aggregates; however, little is known about their spatial patterns and dynamics. Here, we investigate spatial attributes of BSC patches, their spatial interactions with vascular plants, and factors that drive variation in these attributes using ultra-high-resolution (1 cm) maps from UAV imagery across three ecoregions of the southwest United States. Our analysis showed that light cyanobacteria BSCs varied most in patch shape complexity with aridity, while dark-mixed BSCs varied most in abundance. The distribution of dark-mixed BSCs was strongly affected by the soil template (texture and calcareousness) and vascular plants. Light cyanobacteria BSCs and woody plants spatially aggregated with aridity, while slope enhanced the spatial association between BSC functional groups. We conclude that light cyanobacteria BSCs can likely persist under stress through patch shape alterations, while dark-mixed BSC patches may have a lower capacity to do so-corroborating that dark-mixed BSC abundance may decline under altered climatic regimes. Light cyanobacteria BSCs may also buffer the effects of aridity for other biota by promoting runoff. BSCs and vascular plants coordinate in space in response to resource availability, suggesting the need to consider self-organization of multiple unique assemblages to better predict dryland response to climate change.
英文关键词	patch dynamics; ecohydrology; spatial feedbacks; aridification; cryptogams; remote sensing
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001152306900001
来源期刊	ECOSYSTEMS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300845
作者单位	University of California System; University of California Davis; University of Graz; United States Department of Energy (DOE); Los Alamos National Laboratory
推荐引用方式 GB/T 7714	Kozar, Daniel,Weber, Bettina,Zhang, Yu,et al. Spatial Signatures of Biological Soil Crusts and Community Level Self-organization in Drylands[J],2024,27(3).
APA	Kozar, Daniel,Weber, Bettina,Zhang, Yu,&Dong, Xiaoli.(2024).Spatial Signatures of Biological Soil Crusts and Community Level Self-organization in Drylands.ECOSYSTEMS,27(3).
MLA	Kozar, Daniel,et al."Spatial Signatures of Biological Soil Crusts and Community Level Self-organization in Drylands".ECOSYSTEMS 27.3(2024).