干旱区生态环境知识资源中心(Arid): Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer

Arid

DOI	10.1016/j.catena.2021.105166
	Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer
	Eldridge, David J.; Koen, Terrence B.
通讯作者	Eldridge, DJ (corresponding author), Univ New South Wales, Ctr Ecosyst Sci, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	200
英文摘要	An inherent feature of arid and semiarid environments (drylands) is the importance of landscape heterogeneity in driving soil and ecological processes. Soil disturbance by organisms is an important, but often overlooked, driver of patchiness, but little is known about the temporal changes in soil and ecological processes following disturbance. We used artificial depressions, designed to mimic the foraging pits of the vertebrate marsupial, the Short-beaked echidna (Tachyglossus aculeatus), to examine temporal changes in soil labile carbon, decomposition, litter capture, and plant germination and survival, over an 18 month period. Foraging pits had a half-life of about 7 months, and trapped seven-times more litter than an equivalent area on the soil surface. Larger pits tended to trap more litter than smaller pits. Foraging pits trapped six-times more seed abundance and three-times more richness than the surface. Eighteen months after disturbance, litter decomposition was 30% greater in the pits, and labile carbon concentrations were 8% greater (622 mg kg(-1)) than the original undisturbed soils (578 mg kg(-1)). Taken together, we provide strong evidence that foraging by native animals is an important mechanism for driving spatial heterogeneity in dryland soils. Our results also suggest that simulating the activities of short-beaked echidnas may provide a mechanism for rehabilitating degraded soils.
英文关键词	Animal foraging Foraging pit Ecosystem engineering Woodland function Biopedturbation Pedoturbation Non-trophic effects
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620777400028
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368834
作者单位	[Eldridge, David J.; Koen, Terrence B.] Univ New South Wales, Ctr Ecosyst Sci, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Eldridge, David J.,Koen, Terrence B.. Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer[J],2021,200.
APA	Eldridge, David J.,&Koen, Terrence B..(2021).Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer.CATENA,200.
MLA	Eldridge, David J.,et al."Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer".CATENA 200(2021).