The complex interaction network among multiple invasive bird species in a cavity-nesting community

Orchan, Yotam, Chiron, François, Shwartz, Assaf and Kark, Salit (2013) The complex interaction network among multiple invasive bird species in a cavity-nesting community. Biological Invasions, 15 2: 429-445. doi:10.1007/s10530-012-0298-6

Author Orchan, Yotam
Chiron, François
Shwartz, Assaf
Kark, Salit
Title The complex interaction network among multiple invasive bird species in a cavity-nesting community
Journal name Biological Invasions   Check publisher's open access policy
ISSN 1387-3547
Publication date 2013-02-01
Year available 2012
Sub-type Article (original research)
DOI 10.1007/s10530-012-0298-6
Open Access Status Not yet assessed
Volume 15
Issue 2
Start page 429
End page 445
Total pages 17
Place of publication Dordrecht, Netherlands
Publisher Springer
Language eng
Abstract Alien invasive species have detrimental effects on invaded communities. Aliens do not invade a vacuum, but rather a community consisting of native and often other alien species. Our current understanding of the pathways and network of interactions among multiple invasive species within whole communities is limited. Eradication efforts often focus on a single target species, potentially leading to unexpected outcomes on interacting non-target species. We aimed to examine the interaction network in a cavity-nesting community consisting of native and invasive birds. We studied the nesting cavities in the largest urban park in Israel over two breeding seasons. We found evidence for a complex interaction network that includes negative, neutral and positive interactions, but no synergistic positive interactions among aliens. Three major factors shaped the interaction network: breeding timing, nesting preferences and the ability to excavate or widen the cavities, which were found to be a limited resource. Cavity enlargement by the early-breeding invasive rose-ringed parakeet may enhance breeding of the invasive common myna in previously unavailable holes. The myna excludes the smaller invasive vinous-breasted starling, a direct competitor of the primary nest excavator, the native Syrian woodpecker. Therefore, management and eradication efforts directed towards the common myna alone may actually release the vinous-breasted starling from competitive exclusion by the common myna, increasing the negative impact of the vinous-breasted starling on the native community. As found here, interactions among multiple alien species can be crucial in shaping invasion success and should be carefully considered when aiming to effectively manage biological invasions.
Keyword Biological invasions
Biotic homogenization
Cavity network
Common myna
Invasion meltdown
Invasive birds
Multi-species interactions
Rose-ringed parakeet
Urban park
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 31 August 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 18 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 30 Jan 2013, 07:34:39 EST by Gail Walter on behalf of School of Biological Sciences