Arid
DOI10.1111/1365-2664.12601
Recruitment of a keystone tree species must concurrently manage flooding and browsing
Horner, Gillis J.1; Cunningham, Shaun C.2,3; Thomson, James R.4; Baker, Patrick J.5; Mac Nally, Ralph3
通讯作者Horner, Gillis J.
来源期刊JOURNAL OF APPLIED ECOLOGY
ISSN0021-8901
EISSN1365-2664
出版年2016
卷号53期号:3页码:944-952
英文摘要

1. Multiple pressures (land-use change, water extraction and climate change) interact to influence biodiversity and ecosystem processes, but direct evidence for interactions among multiple pressures is limited. Floodplain forests are an acute example of how interacting pressures (river regulation, water extraction, decreasing rainfall and mammal browsing) interact to degrade native ecosystems.


2. We conducted a 2-year field experiment to determine how flooding, browsing and sediment salinity interacted to determine in situ seedling survival and growth of the keystone floodplain tree species (Eucalyptus camaldulensis Dehnh.). On semi-arid floodplains of southern Australia, 1-year-old seedlings were planted on the banks of six ephemeral creeks, three of which were flooded with management flows before planting while the others remained dry. Four plots were established at each creek, two open to browsing and two fenced to exclude mammal herbivores.


3. Flooding had a strong positive effect on seedling survival and height, but browsing had strong negative effects. Sediment salinity (a covariate rather than a designed effect) had a weak negative effect on seedling survival and height.


4. The positive effects of flooding were largely offset by the negative interaction with browsing and, to a lesser extent, sediment salinity.


5. Although flooding has been restored to some degraded floodplain forests subjected to river regulation and a drying climate, the long-term success of such actions is likely to be undermined by persistent browsing.


6. Synthesis and applications. Management actions that focus on single pressures (e.g. infrequent flooding) and processes (e.g. mature tree survival) while ignoring other pressures are unlikely to sustain populations of keystone species, suggesting that complementary strategies (managed flooding with herbivore control) are necessary to sustain recruitment and, therefore, ensure the future health of these essential ecosystems.


英文关键词browsing Eucalyptus camaldulensis flooding floodplain forests herbivory keystone tree species multiple pressures population viability recruitment river regulation
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000380065400034
WOS关键词FLOODPLAIN FORESTS ; CLIMATE-CHANGE ; SALT TOLERANCE ; RIVER ; VEGETATION ; GROWTH ; ECOSYSTEMS ; SURVIVAL ; MODEL ; UNDERSTOREY
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193998
作者单位1.Monash Univ, Sch Biol Sci, Clayton, Vic 3800, Australia;
2.Deakin Univ, Sch Life & Environm Sci, Ctr Integrat Ecol, Burwood, Vic 3125, Australia;
3.Univ Canberra, Inst Appl Ecol, Bruce, ACT 2617, Australia;
4.Arthur Rylah Inst, Victorian Dept Environm Land Water & Planning, Heidelberg, Vic 3084, Australia;
5.Univ Melbourne, Sch Ecosyst & Forest Sci, Richmond, Vic 3121, Australia
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GB/T 7714
Horner, Gillis J.,Cunningham, Shaun C.,Thomson, James R.,et al. Recruitment of a keystone tree species must concurrently manage flooding and browsing[J],2016,53(3):944-952.
APA Horner, Gillis J.,Cunningham, Shaun C.,Thomson, James R.,Baker, Patrick J.,&Mac Nally, Ralph.(2016).Recruitment of a keystone tree species must concurrently manage flooding and browsing.JOURNAL OF APPLIED ECOLOGY,53(3),944-952.
MLA Horner, Gillis J.,et al."Recruitment of a keystone tree species must concurrently manage flooding and browsing".JOURNAL OF APPLIED ECOLOGY 53.3(2016):944-952.
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