干旱区生态环境知识资源中心(Arid): Assessing the viability of cyanobacteria pellets for application in arid land restoration

Arid

DOI	10.1016/j.jenvman.2020.110795
	Assessing the viability of cyanobacteria pellets for application in arid land restoration
	Roman, J. R.; Chilton, A. M.; Canton, Y.; Munoz-Rojas, M.
通讯作者	Roman, JR
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	270
英文摘要	The role of cyanobacteria from soil biocrusts in restoring degraded land is gaining interest in recent years because of their critical role in enhancing soil fertility and preventing erosion. However, soil restoration through cyanobacterial inoculation remains a challenge for large-scale restoration efforts and new methodologies for effective cyanobacterial application need to be developed. Here, we propose a bioenvironmental approach to inoculate soils with pelletized cyanobacteria from soil biocrusts. Fresh cultures of three soil native cyanobacteria strains from two representative N-fixing genera (Nostoc and Scytonema) and a non-heterocystous filamentous genus (Leptolyngbya) were added into a substrate composed of commercial bentonite powder and sand (1:10 wt ratio) and extruded into pellets. Then, in two multifactorial microcosm experiments under glasshouse conditions, we evaluated (i) the survival and establishment over time of the cyanobacteria encapsulated in pellets, and ii) the viability of pelletized cyanobacteria after drying and storing for 30 d, on soils from three arid regions in Australia. Our results showed that pellets can dissolve completely and spread out in all treatments. Scytonema and the consortium of the three cyanobacteria species showed significant (P < 0.001) deeper CR680 peaks, higher chlorophyll a contents and lower albedo compared to the other inoculation treatments. Storing the pellets for 30 d significantly affected the viability of the cyanobacteria inoculum with reductions of approximately 50% in chlorophyll a content (a proxy for cyanobacteria biomass). Overall, our results showed that some cyanobacteria species can be successfully incorporated into extruded pellets and survive on degraded soils. This technology opens a wide range of opportunities for application in large scale restoration programs although further testing and refining through field trials is recommended.
英文关键词	Biocrust Cyanobacteria inoculation Land degradation Ecosystem restoration Drylands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000554920300016
WOS关键词	BIOLOGICAL SOIL CRUSTS ; INOCULATION ; AMENDMENTS ; BIOCRUST ; CULTIVATION ; RECOVERY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325359
作者单位	[Roman, J. R.; Canton, Y.] Univ Almeria, Agron Dept, Almeria 04120, Spain; [Chilton, A. M.; Munoz-Rojas, M.] UNSW Sydney, Sch Biol Earth & Environm Sci, Ctr Ecosyst Sci, Sydney, NSW 2052, Australia; [Roman, J. R.; Canton, Y.] Univ Almeria, Ctr Invest Colecc Cient Univ Almeria CECOUAL, Almeria, Spain; [Munoz-Rojas, M.] Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia; [Munoz-Rojas, M.] Kings Pk Sci, Dept Biodivers Conservat & Attract, Kings Pk, WA 6005, Australia
推荐引用方式 GB/T 7714	Roman, J. R.,Chilton, A. M.,Canton, Y.,et al. Assessing the viability of cyanobacteria pellets for application in arid land restoration[J]. University of Western Australia,2020,270.
APA	Roman, J. R.,Chilton, A. M.,Canton, Y.,&Munoz-Rojas, M..(2020).Assessing the viability of cyanobacteria pellets for application in arid land restoration.JOURNAL OF ENVIRONMENTAL MANAGEMENT,270.
MLA	Roman, J. R.,et al."Assessing the viability of cyanobacteria pellets for application in arid land restoration".JOURNAL OF ENVIRONMENTAL MANAGEMENT 270(2020).