1999
DOI: 10.1007/s004420050719
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Effects of herbivory and competition on an introduced plant in decline

Abstract: Anthemiscotula was introduced to Denmark 500 years ago, and its distribution is presently limited and in decline. A manipulative field experiment was performed to investigate the effects of native plant competitors and native invertebrate herbivores on its performance. Generally, both herbivory and competition treatments had great impact, and when both factors were operating, the effects were additive for all variables except plant height. Although A. cotula showed plasticity in growth, resource allocation and… Show more

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Cited by 32 publications
(27 citation statements)
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“…A common view in invasion ecology is that communities with higher species richness are more resistant to the establishment and spread of invasive species (the diversityinvasibility relationship, Elton 1958). This idea received support (Case 1990;Erneberg 1999;Kennedy et al 2002) mainly from plant ecologists (Levine et al 2004), while much less is known about ecosystem resistance to invasive pest insects (Wilsey and Polley 2002). A few recent studies suggest that tree diversity in native communities may reduce the establishment and spread of invasive pests (Rigot et al 2014;Guyot et al 2015), but identifying the underlying mechanisms remains a major challenge (Nunez-Mir et al 2017).…”
Section: Introductionmentioning
confidence: 99%
“…A common view in invasion ecology is that communities with higher species richness are more resistant to the establishment and spread of invasive species (the diversityinvasibility relationship, Elton 1958). This idea received support (Case 1990;Erneberg 1999;Kennedy et al 2002) mainly from plant ecologists (Levine et al 2004), while much less is known about ecosystem resistance to invasive pest insects (Wilsey and Polley 2002). A few recent studies suggest that tree diversity in native communities may reduce the establishment and spread of invasive pests (Rigot et al 2014;Guyot et al 2015), but identifying the underlying mechanisms remains a major challenge (Nunez-Mir et al 2017).…”
Section: Introductionmentioning
confidence: 99%
“…Reallocation of resources to growth or reproduction after herbivory can be advantageous for species colonizing new areas (Blundell & Peart, 2001;Erneberg, 1999;Rogers & Siemann, 2004;Sun et al, 2009). However, establishing the connection between response to herbivory and invasive potential is extremely difficult.…”
Section: Resultsmentioning
confidence: 99%
“…Our finding that effects of aboveground parts of neighbor plants and insect folivory acted independently in reducing growth of tall thistle rosettes adds to a short but growing list of field experiments in natural or agroecosystems that demonstrate that independent effects of neighbor plants and insect folivory on host plant growth may be more common than either synergistic or antagonistic interactions (independent effects on growth: Rees and Brown 1992, McEvoy et al 1993, Erneberg 1999, Newingham and Callaway 2006; synergistic effects on growth: Nötzold et al 1998, Agrawal 2004; antagonistic effects on growth: Haag et al 2004). In spite of the independence of their effects on plant growth, we did find evidence that the presence of neighbor plants magnified the impact of insect folivory on the transition rate of rosettes to reproductive life-stages.…”
Section: Combined Effects Of Neighbor Plants and Insect Folivorymentioning
confidence: 99%