干旱区生态环境知识资源中心(Arid): The allelopathic, adhesive, hydrophobic and toxic latex ofEuphorbiaspecies is the cause of fairy circles investigated at several locations in Namibia

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DOI	10.1186/s12898-020-00313-7
	The allelopathic, adhesive, hydrophobic and toxic latex ofEuphorbiaspecies is the cause of fairy circles investigated at several locations in Namibia
	Meyer, J. J. Marion; Schutte, Christiaan E.; Hurter, Jan W.; Galt, Nicole S.; Degashu, Petunia; Breetzke, Greg; Baranenko, Denis; Meyer, Nicole L.
通讯作者	Meyer, JJM
来源期刊	BMC ECOLOGY
EISSN	1472-6785
出版年	2020
卷号	20 期号:1
英文摘要	Background In this multidisciplinary study we present soil chemical, phytochemical and GIS spatial patterning evidence that fairy circles studied in three separate locations of Namibia may be caused byEuphorbiaspecies. Results We show that matrix sand coated withE. damaranalatex resulted in faster water-infiltration rates. GC-MS analyses revealed that soil from fairy circles and from under decomposingE. damaranaplants are very similar in phytochemistry.E. damaranaandE. gummiferaextracts have a detrimental effect on bacteria isolated from the rhizosphere ofStipagrostis uniplumisand inhibit grass seed germination. Several compounds previously identified with antimicrobial and phytotoxic activity were also identified inE. gummifera.GIS analyses showed that perimeter sizes and spatial characteristics (Voronoi tessellations, distance to nearest neighbour ratio, pair correlation function and L-function) of fairy circles are similar to those of fairy circles co-occurring withE. damarana(northern Namibia), and withE. gummifera(southern Namibia). Historical aerial imagery showed that in a population of 406E. gummiferaplants, 134 were replaced by fairy circles over a 50-year period. And finally, by integrating rainfall, altitude and landcover in a GIS-based site suitability model, we predict where fairy circles should occur. The model largely agreed with the distribution of threeEuphorbiaspecies and resulted in the discovery of new locations of fairy circles, in the far southeast of Namibia and part of the Kalahari Desert of South Africa. Conclusions It is proposed that the allelopathic, adhesive, hydrophobic and toxic latex ofE. damarana, E. gummifera, and possibly other species likeE. gregaria,is the cause of the fairy circles of Namibia in the areas investigated and possibly in all other areas as well.
英文关键词	Fairy circles Namibia Euphorbia Latex Allelopathy Spatial pattern
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000560334100001
WOS关键词	SOIL-WATER REPELLENCY ; EUPHORBIA-HELIOSCOPIA ; SELF-ORGANIZATION ; SPATIAL-PATTERNS ; CLIMATE-CHANGE ; EXTRACTS ; DESERT ; ORIGIN ; PLANTS ; L.
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325659
作者单位	[Meyer, J. J. Marion; Schutte, Christiaan E.; Hurter, Jan W.; Galt, Nicole S.; Degashu, Petunia; Meyer, Nicole L.] Univ Pretoria, Dept Plant & Soil Sci, ZA-0002 Pretoria, South Africa; [Schutte, Christiaan E.; Breetzke, Greg] Univ Pretoria, Dept Geog Geoinformat & Meteorol, ZA-0002 Pretoria, South Africa; [Meyer, J. J. Marion; Baranenko, Denis] ITMO Univ, 9 Lomonosov St, St Petersburg 191002, Russia
推荐引用方式 GB/T 7714	Meyer, J. J. Marion,Schutte, Christiaan E.,Hurter, Jan W.,et al. The allelopathic, adhesive, hydrophobic and toxic latex ofEuphorbiaspecies is the cause of fairy circles investigated at several locations in Namibia[J],2020,20(1).
APA	Meyer, J. J. Marion.,Schutte, Christiaan E..,Hurter, Jan W..,Galt, Nicole S..,Degashu, Petunia.,...&Meyer, Nicole L..(2020).The allelopathic, adhesive, hydrophobic and toxic latex ofEuphorbiaspecies is the cause of fairy circles investigated at several locations in Namibia.BMC ECOLOGY,20(1).
MLA	Meyer, J. J. Marion,et al."The allelopathic, adhesive, hydrophobic and toxic latex ofEuphorbiaspecies is the cause of fairy circles investigated at several locations in Namibia".BMC ECOLOGY 20.1(2020).