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Dive into the research topics where Valérie Vanparys is active.

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Featured researches published by Valérie Vanparys.


Oecologia | 2008

Impacts of alien invasive plants on soil nutrients are correlated with initial site conditions in NW Europe.

Nicolas Dassonville; Sonia Vanderhoeven; Valérie Vanparys; Mathieu Hayez; Wolf Gruber; Pierre Jacques Meerts

Alien invasive plants are capable of modifying ecosystem function. However, it is difficult to make generalisations because impacts often appear to be species- and site-specific. In this study, we examined the impacts of seven highly invasive plant species in NW Europe (Fallopia japonica, Heracleum mantegazzianum, Impatiens glandulifera, Prunus serotina, Rosa rugosa, Senecio inaequidens, Solidago gigantea) on nutrient pools in the topsoil and the standing biomass. We tested if the impacts follow predictable patterns, across species and sites or, alternatively, if they are entirely idiosyncratic. To that end, we compared invaded and adjacent uninvaded plots in a total of 36 sites with widely divergent soil chemistry and vegetation composition. For all species, invaded plots had increased aboveground biomass and nutrient stocks in standing biomass compared to uninvaded vegetation. This suggests that enhanced nutrient uptake may be a key trait of highly invasive plant species. The magnitude and direction of the impact on topsoil chemical properties were strongly site-specific. A striking finding is that the direction of change in soil properties followed a predictable pattern. Thus, strong positive impacts (higher topsoil nutrient concentrations in invaded plots compared to uninvaded ones) were most often found in sites with initially low nutrient concentrations in the topsoil, while negative impacts were generally found under the opposite conditions. This pattern was significant for potassium, magnesium, phosphorus, manganese and nitrogen. The particular site-specific pattern in the impacts that we observed provides the first evidence that alien invasive species may contribute to a homogenisation of soil conditions in invaded landscapes.


Evolutionary Applications | 2010

Linking concepts in the ecology and evolution of invasive plants: network analysis shows what has been most studied and identifies knowledge gaps

Sonia Vanderhoeven; Cynthia S. Brown; Carolyn K. Tepolt; Neil D. Tsutsui; Valérie Vanparys; Sheryl Y. Atkinson; Grégory Mahy; Arnaud Monty

In recent decades, a growing number of studies have addressed connections between ecological and evolutionary concepts in biologic invasions. These connections may be crucial for understanding the processes underlying invaders’ success. However, the extent to which scientists have worked on the integration of the ecology and evolution of invasive plants is poorly documented, as few attempts have been made to evaluate these efforts in invasion biology research. Such analysis can facilitate recognize well‐documented relationships and identify gaps in our knowledge. In this study, we used a network‐based method for visualizing the connections between major aspects of ecology and evolution in the primary research literature. Using the family Poaceae as an example, we show that ecological concepts were more studied and better interconnected than were evolutionary concepts. Several possible connections were not documented at all, representing knowledge gaps between ecology and evolution of invaders. Among knowledge gaps, the concepts of plasticity, gene flow, epigenetics and human influence were particularly under‐connected. We discuss five possible research avenues to better understand the relationships between ecology and evolution in the success of Poaceae, and of alien plants in general.


Acta Oecologica-international Journal of Ecology | 2008

Plant-pollinator interactions: comparison between an invasive and a native congeneric species

Valérie Vanparys; Pierre Jacques Meerts; Anne-Laure Jacquemart


Plant Ecology and Evolution | 2011

Comparative study of the reproductive ecology of two co-occurring related plant species: the invasive Senecio inaequidens and the native Jacobaea vulgaris

Valérie Vanparys; Valérie Cawoy; Olivia Mahaux; Anne-Laure Jacquemart


American Journal of Plant Sciences | 2013

Generalist versus Specialist Herbivores on the Invasive Senecio inaequidens and a Native Related Species: What Makes the Difference?

Anne-Laure Jacquemart; Valérie Vanparys; Pierre Jacques Meerts


Parcs et Reserves : revue trimestrielle d'Ardenne et Gaume | 2009

Les plantes exotiques envahissantes en Belgique ont-elles des impacts ?

Layla Saad; Anne-Laure Jacquemart; Valérie Cawoy; Valérie Vanparys; Arnaud Vervoort; Pierre Jacques Meerts; Nicolas Dassonville; Sylvie Domken; Grégory Mahy


Science Facing Aliens: Proceedings of a scientific meeting on Invasive Alien Species | 2010

Soil arthropods associated to the invasive Senecio inaequidens compared to the native S. jacobaea (Asteraceae)

Valérie Vanparys; Pierre Jacques Meerts; Guy Josens; Anne-Laure Jacquemart


Silva Belgica | 2009

Invasions biologiques : un peu de vocabulaire

Anne-Laure Jacquemart; Arnaud Vervoort; Pierre Lhoir; Valérie Vanparys; Nicolas Dassonville; Layla Saad; Sonia Vanderhoeven; Grégory Mahy; Valérie Cawoy


Parcs et Reserves : revue trimestrielle d'Ardenne et Gaume | 2009

Les invasions biologiques ... quand Darwin s'en mêle

Sonia Vanderhoeven; Grégory Mahy; Arnaud Monty; Anne-Laure Jacquemart; Valérie Vanparys


Parcs & réserves | 2009

Les exotiques envahissantes en Belgique ont-elles des impacts ?

Layla Saad; Anne-Laure Jacquemart; Valérie Cawoy; Valérie Vanparys; Arnaud Vervoort; Pierre Jacques Meerts; Nicolas Dassonville; Sylvie Domken

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Anne-Laure Jacquemart

Université catholique de Louvain

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Pierre Jacques Meerts

Université libre de Bruxelles

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Nicolas Dassonville

Université libre de Bruxelles

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Valérie Cawoy

Université catholique de Louvain

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Sylvie Domken

Université libre de Bruxelles

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Guy Josens

Université libre de Bruxelles

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Mathieu Hayez

Université libre de Bruxelles

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Pierre Lhoir

Université catholique de Louvain

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