Arid
DOI10.1071/BT16104
Rainfall and grazing: not the only barriers to arid-zone conifer recruitment
Zimmer, Heidi C.1,2; Florentine, Singarayer K.1; Enke, Rita3; Westbrooke, Martin1
通讯作者Zimmer, Heidi C.
来源期刊AUSTRALIAN JOURNAL OF BOTANY
ISSN0067-1924
EISSN1444-9862
出版年2017
卷号65期号:2页码:109-119
英文摘要

An understanding of the drivers of infrequent recruitment is fundamental in managing for species persistence. Callitris glaucophylla Joy Thomps. & L.A.S. Johnson (white cypress-pine) is a slow-growing, long-lived conifer, with a distribution that extends across arid Australia. Arid populations of C. glaucophylla are endangered in New South Wales, and are characterised by infrequent recruitment. We examined recruitment patterns of C. glaucophylla in differential grazing exclosures (excluding rabbits, excluding large herbivores or excluding both) and in unfenced areas. More recruitment occurred in rabbit-proof exclosures, compared with nearby large herbivore and control exclosures, although some rabbit-proof exclosures recorded no recruitment. Increases in recruitment at several long-term exclosures were associated with wet periods, as was recruitment at some unfenced sites. Apart from grazing and rainfall, recruitment was related to mature tree size and stand density (probably because of their influence on seed availability). These endangered arid C. glaucophylla woodlands are all that remains of a once extensive distribution, and are habitat for a suite of threatened species. Reduction in grazing pressure, particularly from rabbits, is clearly critical to maintain recruitment in these remnant populations. Chances of recruitment appear to be enhanced in low-density stands, around large trees, and in dune blow outs-fencing should focus on these areas.


英文关键词Callitris glaucophylla cypress pine desert rabbits regeneration seedlings
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000398537900003
WOS关键词PINE CALLITRIS-GLAUCOPHYLLA ; MIXED-EFFECTS MODELS ; NEW-SOUTH-WALES ; DEMOGRAPHIC PATTERNS ; AUSTRALIAN CONIFER ; EASTERN AUSTRALIA ; SEED PRODUCTION ; TREE ; GROWTH ; POPULATION
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构Arizona State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197736
作者单位1.Federat Univ Australia, Fac Sci & Technol, Ctr Environm Management, POB 663, Mt Helen, Vic 3350, Australia;
2.NSW Off Environm & Heritage, POB 1967, Hurstville, NSW 1481, Australia;
3.NSW Natl Pk & Wildlife Serv, Off Environm & Heritage, POB 318, Buronga, NSW 2739, Australia
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GB/T 7714
Zimmer, Heidi C.,Florentine, Singarayer K.,Enke, Rita,et al. Rainfall and grazing: not the only barriers to arid-zone conifer recruitment[J]. Arizona State University,2017,65(2):109-119.
APA Zimmer, Heidi C.,Florentine, Singarayer K.,Enke, Rita,&Westbrooke, Martin.(2017).Rainfall and grazing: not the only barriers to arid-zone conifer recruitment.AUSTRALIAN JOURNAL OF BOTANY,65(2),109-119.
MLA Zimmer, Heidi C.,et al."Rainfall and grazing: not the only barriers to arid-zone conifer recruitment".AUSTRALIAN JOURNAL OF BOTANY 65.2(2017):109-119.
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