Range-expanding plant species and their belowground neighbours : digging into novel interactions

Rutger Arie Wilschut

Research output: Thesisinternal PhD, WU

Abstract

In this thesis I studied plant-soil interactions of range-expanding plant species: plants that have expanded their range northward due to recent climate change. The interactions of these plant species with associated belowground organisms are predicted to change along their range expansion trajectory, as belowground organisms have limited dispersal capabilities. I show that nematode communities under range-expanding plant species indeed change along a latitudinal transect across Europe, but that range-expanding plant species only rarely experience less herbivory from nematodes in their new range compared to their original range. Greenhouse studies showed that in the new range, the direct and indirect interactions of range-expanding plant species with root-feeding nematodes differ from similar interactions of native plant species, but that the outcomes of such interactions are highly species-specific. The level of dissimilarity in root chemistry between range-expanding plant and related native plant species may determine the responses of native nematodes to range-expanding plant species in their new range. I also show that phylogenetic distance is not a good predictor of variation in plant-soil interactions among native and range-expanding plant species. Overall, my thesis shows that interactions of range-expanding plant species with soil organisms in their new range are species-specific, and that the impact of range-expanding plant species on communities in their new range cannot be easily predicted.

Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • van der Putten, Wim, Promotor
Award date28 Aug 2018
Place of PublicationWageningen
Publisher
Print ISBNs9789463433075
DOIs
Publication statusPublished - 2018

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Nematoda
soil-plant interactions
organisms
trajectories
chemistry
herbivores
climate change
greenhouses
phylogeny

Cite this

Wilschut, Rutger Arie. / Range-expanding plant species and their belowground neighbours : digging into novel interactions. Wageningen : Wageningen University, 2018. 174 p.
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title = "Range-expanding plant species and their belowground neighbours : digging into novel interactions",
abstract = "In this thesis I studied plant-soil interactions of range-expanding plant species: plants that have expanded their range northward due to recent climate change. The interactions of these plant species with associated belowground organisms are predicted to change along their range expansion trajectory, as belowground organisms have limited dispersal capabilities. I show that nematode communities under range-expanding plant species indeed change along a latitudinal transect across Europe, but that range-expanding plant species only rarely experience less herbivory from nematodes in their new range compared to their original range. Greenhouse studies showed that in the new range, the direct and indirect interactions of range-expanding plant species with root-feeding nematodes differ from similar interactions of native plant species, but that the outcomes of such interactions are highly species-specific. The level of dissimilarity in root chemistry between range-expanding plant and related native plant species may determine the responses of native nematodes to range-expanding plant species in their new range. I also show that phylogenetic distance is not a good predictor of variation in plant-soil interactions among native and range-expanding plant species. Overall, my thesis shows that interactions of range-expanding plant species with soil organisms in their new range are species-specific, and that the impact of range-expanding plant species on communities in their new range cannot be easily predicted.",
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year = "2018",
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Range-expanding plant species and their belowground neighbours : digging into novel interactions. / Wilschut, Rutger Arie.

Wageningen : Wageningen University, 2018. 174 p.

Research output: Thesisinternal PhD, WU

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T1 - Range-expanding plant species and their belowground neighbours : digging into novel interactions

AU - Wilschut, Rutger Arie

N1 - WU thesis 6998 Includes bibliographical references. - With summaries in Dutch and English

PY - 2018

Y1 - 2018

N2 - In this thesis I studied plant-soil interactions of range-expanding plant species: plants that have expanded their range northward due to recent climate change. The interactions of these plant species with associated belowground organisms are predicted to change along their range expansion trajectory, as belowground organisms have limited dispersal capabilities. I show that nematode communities under range-expanding plant species indeed change along a latitudinal transect across Europe, but that range-expanding plant species only rarely experience less herbivory from nematodes in their new range compared to their original range. Greenhouse studies showed that in the new range, the direct and indirect interactions of range-expanding plant species with root-feeding nematodes differ from similar interactions of native plant species, but that the outcomes of such interactions are highly species-specific. The level of dissimilarity in root chemistry between range-expanding plant and related native plant species may determine the responses of native nematodes to range-expanding plant species in their new range. I also show that phylogenetic distance is not a good predictor of variation in plant-soil interactions among native and range-expanding plant species. Overall, my thesis shows that interactions of range-expanding plant species with soil organisms in their new range are species-specific, and that the impact of range-expanding plant species on communities in their new range cannot be easily predicted.

AB - In this thesis I studied plant-soil interactions of range-expanding plant species: plants that have expanded their range northward due to recent climate change. The interactions of these plant species with associated belowground organisms are predicted to change along their range expansion trajectory, as belowground organisms have limited dispersal capabilities. I show that nematode communities under range-expanding plant species indeed change along a latitudinal transect across Europe, but that range-expanding plant species only rarely experience less herbivory from nematodes in their new range compared to their original range. Greenhouse studies showed that in the new range, the direct and indirect interactions of range-expanding plant species with root-feeding nematodes differ from similar interactions of native plant species, but that the outcomes of such interactions are highly species-specific. The level of dissimilarity in root chemistry between range-expanding plant and related native plant species may determine the responses of native nematodes to range-expanding plant species in their new range. I also show that phylogenetic distance is not a good predictor of variation in plant-soil interactions among native and range-expanding plant species. Overall, my thesis shows that interactions of range-expanding plant species with soil organisms in their new range are species-specific, and that the impact of range-expanding plant species on communities in their new range cannot be easily predicted.

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