Arid
DOI10.1071/RJ17027
Long-term revegetation success of severely degraded chenopod shrublands
Haby, N. A.
通讯作者Haby, N. A.
来源期刊RANGELAND JOURNAL
ISSN1036-9872
EISSN1834-7541
出版年2017
卷号39期号:4页码:341-354
英文摘要

The restoration of severely degraded vegetation communities is often said to require mechanical intervention. However, the degree of intervention required, and its capacity to successfully restore areas of bare (scalded) soil and high weed cover into functioning chenopod shrubland, is unknown. Ten years on from mechanical intervention and direct seeding using a Contour Seeder and Camel Pitter, the abundance and cover of species was compared across disturbed and undisturbed microtopographic zones using one-way repeated-measures ANOVA and pairwise t-tests. Along Contour Seeder rip lines, recruitment of perennial species was greatest in the furrow (e.g. direct seeded: F-2,F-78 = 27.15, P < 0.001; wild-sourced: F-2,F-78 = 13.19, P < 0.001), and annual (and short-lived perennial) species equal to, or greater, on the undisturbed flat (wild-sourced: F-2,F-98 = 43.91, P < 0.001). At the species-level, these trends often coincided with the species’ life-history strategy, but not always (e.g. the perennial Atriplex stipitata illustrated the annual trend; F-2,F-78 = 7.71, P < 0.001). It is also important to note that a trend in recruitment could be driven by recruitment patterns in any one demographic phase. For example, the perennial trend in Atriplex vesicaria and Sida fibulifera abundance was driven by the recruitment of reproductive plants (F-2,F-48 = 15.57, P < 0.001), or seedlings (F-2,F-36 = 5.24, P = 0.010), respectively. These results indicate the functional benefits of mechanical intervention vary between species. The perennial and annual trends detected along Contour Seeder rip lines were less apparent along Camel Pitter rip lines where both perennial and annual species benefited from the initial disturbance. Overall, mechanical intervention facilitated the patchy recruitment of a Maireana pyramidata over A. vesicaria low shrubland, including several perennial and annual chenopods, indicating an early stage of recovery.


英文关键词direct seeding functional restoration Kimseed Camel Pitter (Disc Revegetation Seeder) Kimseed Linkage Rangeland Contour Seeder regeneration semi-arid
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000413963600004
WOS关键词NEW-SOUTH-WALES ; MAIREANA-PYRAMIDATA ; SEMIARID RANGELAND ; ATRIPLEX-VESICARIA ; ARID LANDS ; SEED BANKS ; RESTORATION ; AUSTRALIA ; DYNAMICS ; SHRUBS
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/2XILL650/201910
作者单位Wild R&D, 4 Olde Coach Rd, Urrbrae, SA 5064, Australia
推荐引用方式
GB/T 7714
Haby, N. A.. Long-term revegetation success of severely degraded chenopod shrublands[J],2017,39(4):341-354.
APA Haby, N. A..(2017).Long-term revegetation success of severely degraded chenopod shrublands.RANGELAND JOURNAL,39(4),341-354.
MLA Haby, N. A.."Long-term revegetation success of severely degraded chenopod shrublands".RANGELAND JOURNAL 39.4(2017):341-354.
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