Arid
DOI10.1111/1365-2664.13188
Eradicating abundant invasive prey could cause unexpected and varied biodiversity outcomes: The importance of multispecies interactions
Lurgi, Miguel1,2,3,4; Ritchie, Euan G.5; Fordham, Damien A.1,2,6
通讯作者Lurgi, Miguel
来源期刊JOURNAL OF APPLIED ECOLOGY
ISSN0021-8901
EISSN1365-2664
出版年2018
卷号55期号:5页码:2396-2407
英文摘要

1. Abundant and widely distributed invasive prey can negatively affect co-occurring native species by competing for food and/or shelter, removing vegetation cover and reducing habitat complexity (changing predation risk), and by sustaining elevated abundances of invasive mesopredators. However, information regarding the community and trophic consequences of controlling invasive prey and their temporal dynamics remain poorly understood.


2. We used multispecies ecological network models to simulate the consequences of changing European rabbit Oryctolagus cuniculus abundance in an arid mammalian community. We quantified how changes in the dominant prey (rabbits) affected multiple trophic levels, examining changes in predator-prey interactions through time and how they affected native prey persistence.


3. Our results suggest that removal of rabbits can benefit native biodiversity immediately at removal rates between 30% and 40%. However, beyond these levels, densities of small native mammals will decline in the short term. The processes underpinning these declines are: (a) increased competition for resources (vegetation) with kangaroos Macropus spp., whose numbers increase due to their release from competition with rabbits and (b) increased predation (prey switching) by feral cats Felis catus. Both effects are mediated by dingoes Canis dingo, a native apex predator.


4. Importantly, native mammal abundance recovers after a time delay, which is prolonged when high rates of rabbit control are applied. This is likely due to a reduction in hyperpredation by invasive feral cats and red foxes Vulpes vulpes following rabbit removal.


5. Continued eradication of rabbits in arid Australia will benefit native species due to a decrease in apparent competition for resources and by alleviating hyperpredation from invasive mesopredators. Furthermore, ecosystem-level conservation benefits of reducing invasive prey abundance are as important as direct control of invasive mesopredators.


6. Synthesis and applications. Multispecies ecological network models provide wildlife managers with tools to better understand and predict the complex effects of species removal and control on both intact and modified ecosystems. Our results show that management of the Australian arid zone can benefit from controlling invasive prey as well as invasive predators. However, invasive species control can cause unexpected outcomes on native biodiversity. This extends to other systems where dominant prey may play fundamental roles in ecosystem structure and function.


英文关键词apex predator biological invasions community dynamics ecological networks hyperpredation prey switching species removal trophic cascade
类型Article
语种英语
国家Australia ; France ; Denmark
收录类别SCI-E
WOS记录号WOS:000441438600029
WOS关键词APPARENT COMPETITION ; BIOLOGICAL-CONTROL ; ECONOMIC-BENEFITS ; TROPHIC CASCADES ; PREDATORS ; RABBITS ; DYNAMICS ; PATTERNS ; ISLANDS ; MAMMALS
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/2XILL650/210476
作者单位1.Univ Adelaide, Environm Inst, Adelaide, SA, Australia;
2.Univ Adelaide, Sch Biol Sci, Adelaide, SA, Australia;
3.CNRS, Theoret & Expt Ecol Stn, Ecol Networks & Global Change Grp, 2 Route CNRS, Moulis, France;
4.Paul Sabatier Univ, 2 Route CNRS, Moulis, France;
5.Deakin Univ, Ctr Integrat Ecol, Sch Life & Environm Sci, Geelong, Vic, Australia;
6.Univ Copenhagen, Natl Museum Denmark, Ctr Macroecol Evolut & Climate, Copenhagen, Denmark
推荐引用方式
GB/T 7714
Lurgi, Miguel,Ritchie, Euan G.,Fordham, Damien A.. Eradicating abundant invasive prey could cause unexpected and varied biodiversity outcomes: The importance of multispecies interactions[J],2018,55(5):2396-2407.
APA Lurgi, Miguel,Ritchie, Euan G.,&Fordham, Damien A..(2018).Eradicating abundant invasive prey could cause unexpected and varied biodiversity outcomes: The importance of multispecies interactions.JOURNAL OF APPLIED ECOLOGY,55(5),2396-2407.
MLA Lurgi, Miguel,et al."Eradicating abundant invasive prey could cause unexpected and varied biodiversity outcomes: The importance of multispecies interactions".JOURNAL OF APPLIED ECOLOGY 55.5(2018):2396-2407.
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