干旱区生态环境知识资源中心(Arid): Characteristics of hollows and hollow-bearing trees in semi-arid river red gum woodland and potential limitations for hollow-dependent wildlife

Arid

DOI	10.1111/aec.12765
	Characteristics of hollows and hollow-bearing trees in semi-arid river red gum woodland and potential limitations for hollow-dependent wildlife
	Westerhuis, Erin L.1; Schlesinger, Christine A.1; Nano, Catherine E. M.2; Morton, Stephen R.1; Christian, Keith A.3
通讯作者	Westerhuis, Erin L.
来源期刊	AUSTRAL ECOLOGY
ISSN	1442-9985
EISSN	1442-9993
出版年	2019
卷号	44 期号:6 页码:995-1004
英文摘要	Up to 37 species of the birds and microbats inhabiting inland Australia are dependent on tree cavities for breeding or roosting. The river red gum (Eucalyptus camaldulensis), a well-known hollow-bearing tree species, occurs in linear semi-arid woodland along thousands of kilometres of ephemeral river channels and is the only tree species that provides widespread, aggregated hollow resources across a landscape otherwise dominated by shrublands. Here we assess the type and quantity of hollows available along ephemeral rivers of the MacDonnell Ranges bioregion in central Australia and determine which characteristics of river red gums best predict the abundance and characteristics of different tree hollows, as first steps towards assessing the current availability of hollows in the region. Approximately a third of all river red gums sampled were hollow-bearing, but individual trees with abundant hollows were rare. Further, 36% of hollows had an entrance <= 5 cm, and 37% had entrances which were 6-10 cm in diameter, whereas only 13% of hollows had an entrance diameter > 20 cm suitable for larger hollow-using species. Large and high hollows only occurred on trees that did not display post-disturbance resprouting. Trees with multiple and diverse hollows were rare and tended to be in advanced stages of senescence and had larger stems (82.3 +/- 3.33 cm) and were taller (14.4 +/- 0.53 m) compared to non-hollow-bearing trees (23.44 +/- 1.68 cm, 8.0 +/- 0.34 m). Further research is required to establish whether the current abundance of hollows and diversity of hollow types are limiting to cavity-dependent wildlife, and to identify any threats to availability of hollows.
英文关键词	cavity-dependent wildlife ephemeral rivers Hollow-bearing trees river red gum semi-arid woodland
类型	Article
语种	英语
国家	Australia
收录类别	SCI-E
WOS记录号	WOS:000482972800005
WOS关键词	EUCALYPTUS-OBLIQUA FOREST ; AUSTRALIAN BIRDS ; ABUNDANCE ; FAUNA ; BAT ; SELECTION ; HABITAT ; SITES ; FIRE ; AVAILABILITY
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/2XILL650/214552
作者单位	1.Charles Darwin Univ, Res Inst Environm & Livelihoods, Alice Springs, NT 0870, Australia; 2.Flora & Fauna, Dept Environm & Nat Resources, Alice Springs, NT, Australia; 3.Charles Darwin Univ, Res Inst Environm & Livelihoods, Casuarina, NT, Australia
推荐引用方式 GB/T 7714	Westerhuis, Erin L.,Schlesinger, Christine A.,Nano, Catherine E. M.,et al. Characteristics of hollows and hollow-bearing trees in semi-arid river red gum woodland and potential limitations for hollow-dependent wildlife[J],2019,44(6):995-1004.
APA	Westerhuis, Erin L.,Schlesinger, Christine A.,Nano, Catherine E. M.,Morton, Stephen R.,&Christian, Keith A..(2019).Characteristics of hollows and hollow-bearing trees in semi-arid river red gum woodland and potential limitations for hollow-dependent wildlife.AUSTRAL ECOLOGY,44(6),995-1004.
MLA	Westerhuis, Erin L.,et al."Characteristics of hollows and hollow-bearing trees in semi-arid river red gum woodland and potential limitations for hollow-dependent wildlife".AUSTRAL ECOLOGY 44.6(2019):995-1004.