Effect of habitat fragmentation on seed dispersal ability of a wind-dispersed annual in an agroecosystem

Chen, Si‐Chong; Dener, Efrat; Altman, Ariel; Chen, Fang; Giladi, Itamar

doi:10.1016/j.agee.2020.107138

Cited by 4 publications

(2 citation statements)

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“…Accordingly, recent studies emphasize the significance of intraspecific variation in seed dispersal (Chen & Giladi, 2020 ; Snell et al., 2019 ) and local population dynamics (Yang et al., 2021 ) for predicting how plants respond to environmental change. Understanding this intraspecific variation is crucial in fragmented landscapes, because fragmentation could directly affect dispersal traits (Chen et al., 2020 ; Dener et al., 2021 ) and local population dynamics (Hobbs & Yates, 2003 ; Ibáñez et al., 2014 ; Opdam et al., 1993 ). Knowledge of local population dynamics and seed dispersal has been applied to inform management decisions to control the spread of invasive species (e.g., Jongejans et al., 2008 ; Shea et al., 2010 ), and to conserve rare species (Griffith & Forseth, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

Quantifying patch‐specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species

Zhu

Hrušková

Pánková

et al. 2021

Ecology and Evolution

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Section: Discussionmentioning

confidence: 99%

Quantifying patch‐specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species

Zhu

Hrušková

Pánková

et al. 2021

Ecology and Evolution

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“…Heterocarpy might therefore provide plants with a dual pathway for changes in dispersal potential under varying environments: dispersal ability and dispersal rate. However, very little is known about the relationship between these two traits and how each is affected by varying environmental pressures (Chen et al, 2020). For example, both an investment in larger dispersal structures, such as wings or pappus, and an investment in more dispersing propagules might require the allocation of limited resources, resulting in a trade‐off between these two traits.…”

Section: Figurementioning

confidence: 99%

Trade‐off between dispersal traits in a heterocarpic plant across its invasion route

Robinson

Bogdanova

Cohen

et al. 2023

American J of Botany

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Premise Dispersal ability (i.e., investment in dispersing structures) can vary across plant species or populations, such as between core compared to leading populations of invasive plants. However, in heterocarpic plants, which produce propagules with varying dispersal abilities, dispersal potential can also vary via investment in the proportion of dispersing morphs (termed dispersal rate). Nevertheless, very little is known about the interplay between investment in dispersal ability vs. dispersal rate or how each is affected by varying environmental pressures. Methods This study examined the interplay between dispersal ability and dispersal rate across the invasion route of the heterocarpic plant Heterotheca subaxillaris. Capitula of H. subaxillaris were collected from eight populations along its invasion route in the Eastern Mediterranean coastal plain. The dispersal ability of the dispersing pappus‐bearing achenes was measured as the ratio between pappus width and biomass. Dispersal rate was calculated as the ratio between the number of dispersing achenes and total achenes per capitulum. Results Dispersal ability and dispersal rate were found to be negatively correlated across populations of H. subaxillaris, with a greater investment in pappus width in populations at the leading edge of the invasion compared to a greater proportion of dispersing achenes in core populations. Conclusions Our results suggest a trade‐off might exist between dispersal ability and dispersal rate, which could change along the invasion route of heterocarpic plants such as H. subaxillaris and contribute to their invasive success. This study highlights the importance of examining both dispersal traits when studying the dispersal potential of heterocarpic species.

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Direct and indirect effects of fragmentation on seed dispersal traits in a fragmented agricultural landscape

Dener

Ovadia

Shemesh

et al. 2021

Agriculture, Ecosystems & Environment

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Effect of habitat fragmentation on seed dispersal ability of a wind-dispersed annual in an agroecosystem

Cited by 4 publications

References 57 publications

Quantifying patch‐specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species

Quantifying patch‐specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species

Trade‐off between dispersal traits in a heterocarpic plant across its invasion route

Direct and indirect effects of fragmentation on seed dispersal traits in a fragmented agricultural landscape

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