Distance-dependent shifts in net effects by an unpalatable nettle on a palatable plant species

Suzuki, Satoshi; Suzuki, Ryo

doi:10.1016/j.actao.2011.04.011

Cited by 15 publications

(2 citation statements)

References 42 publications

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“…Thus, our new analyses were conducted on the meta‐dataset published by Kuebbing and Nunez (). After reviewing the full meta‐dataset, we determined that 10 of the 83 publications were conducted on islands (Britton, Marrs, Pakeman & Carey, ; Brooker, Scott, Palmer & Swaine, ; D'Antonio, Hughes & Vitousek, ; Garbuzov, Reidinger & Hartley, ; van Mierlo, Wilms & Berendse, ; Stevens & Gowing, ; Suzuki & Suzuki, ,b; Takakura & Fujii, ; del‐Val & Crawley, ), yielding a total of n=62 pairwise comparisons of neighbor effects on islands. The islands represented in this dataset are as follows: Great Britain, New Zealand, Japan, and Hawaii; studies were conducted in both field and greenhouse experiments; and species represented are largely perennial herbs and grasses with few woody plants assessed.…”

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confidence: 99%

Plant competition as a mechanism of invasion on islands: Revisiting the conclusions of Kuebbing and Nuñez (2016)

Barton¹,

Wong²

2019

Biotropica

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Identifying the mechanisms underlying invasive plant establishment and native plant decline remains a central goal in ecology, particularly for biodiversity hotspots such as islands. We re-analyzed a previously published meta-dataset to test the prediction that neighbor effects are stronger on islands vs. continents because island plants are weaker competitors. Although we detected marginally stronger neighbor effects on islands than continents, this was due, at least in part, to stronger competition among native species. An absence of studies testing neighbor effects between native vs.invasive plants on islands prevents a rigorous test for competition effects on islands, highlighting an important knowledge gap. K E Y W O R D Sisland rules, meta-analysis, neighbor effects, plant invasions

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confidence: 99%

Plant competition as a mechanism of invasion on islands: Revisiting the conclusions of Kuebbing and Nuñez (2016)

Barton¹,

Wong²

2019

Biotropica

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“…Our previous study examined the relative importance of positive and negative effects of Urtica on the dwarf-phenotype of Persicaria using exclosures and experimental removal of Urtica, and revealed that facilitative effects of Urtica were limited under natural conditions in Nara Park (Suzuki and Suzuki 2011a). Recently, we more rigorously analyzed the effects of Urtica considering distances between Urtica and Persicaria individuals, and revealed that the relative importance of positive and negative effects of Urtica on Persicaria varies temporally and spatially around a single Urtica plant (Suzuki and Suzuki 2011b). From the results of these previous studies and the present research, we conclude that the effects of Urtica on the dwarf-phenotype of Persicaria vary from facilitative to competitive under natural conditions, but the facilitative effects of Urtica on the dwarf-phenotype of Persicaria are generally limited.…”

Section: Discussionmentioning

confidence: 97%

Morphological adaptation of a palatable plant to long-term grazing can shift interactions with an unpalatable plant from facilitative to competitive

Suzuki

2011

Plant Ecol

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Unpalatable plants can protect palatable neighbor plants from grazing pressure, but morphological evolution of a palatable species might change its interactions with unpalatable plants. We predicted that when a palatable species has locally adapted to grazing by expressing a dwarf phenotype that reduces grazer accessibility, the dwarf plants experience relatively more competitive effects than facilitative effects from large, well-defended, unpalatable species. We used a transplant experiment, in which both dwarf and large ecotypes of a palatable annual species, Persicaria longiseta, were transplanted outside and inside the canopy of an unpalatable nettle, Urtica thunbergiana, in a long-term deer grazing habitat of Nara Park, Japan. The dwarf ecotype of Persicaria has adapted to the grazing environments of the park by exhibiting inherently short shoots and small leaves, whereas the large ecotype is found in habitats with no grazing history. A previous common-garden study suggested that the phenotypic differences were genetically based and that phenotypic plasticity contributed little to the morphological difference. The large-phenotype of Persicaria experienced significantly increased morphological size, survival, and reproductive output under the Urtica canopy compared to outside the canopy, whereas these traits of the dwarf phenotype were reduced under the Urtica canopy compared to outside. These results indicate that the net effects of Urtica on Persicaria were positive for the large ecotype and negative for the dwarf ecotype. Thus, the morphological adaptation of a palatable species to avoid grazing altered its interactions with a large, well-defended neighbor.

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Landscape connectivity dynamics based on network analysis in the Xishuangbanna Nature Reserve, China

et al. 2014

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Distance-dependent shifts in net effects by an unpalatable nettle on a palatable plant species

Cited by 15 publications

References 42 publications

Plant competition as a mechanism of invasion on islands: Revisiting the conclusions of Kuebbing and Nuñez (2016)

Plant competition as a mechanism of invasion on islands: Revisiting the conclusions of Kuebbing and Nuñez (2016)

Morphological adaptation of a palatable plant to long-term grazing can shift interactions with an unpalatable plant from facilitative to competitive

Landscape connectivity dynamics based on network analysis in the Xishuangbanna Nature Reserve, China

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