Browsing NTNU Open by Author "Helsen, Kenny"
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A test of priority effect persistence in semi-natural grasslands through the removal of plant functional groups during community assembly
Helsen, Kenny; Hermy, Martin; Honnay, Olivier (Journal article; Peer reviewed, 2016)Background:It is known that during plant community assembly, the early colonizing species can affect the estab-lishment, growth or reproductive success of later arriving species, often resulting in unpredictable assembly ... -
Biotic and abiotic drivers of intraspecific trait variation within plant populations of three herbaceous plant species along a latitudinal gradient
Helsen, Kenny; Acharya, Kamal Prasad; Brunet, J; Cousins, Sara A. O.; Decocq, Guillaume; Hermy, Martin; Kolb, Annette; Lemke, Isgard H.; Lenoir, Jonathan; Plue, Jan; Verheyen, Kris; De Frenne, Pieter; Graae, Bente Jessen (Journal article; Peer reviewed, 2017)Background: The importance of intraspecific trait variation (ITV) is increasingly acknowledged among plant ecologists. However, our understanding of what drives ITV between individual plants (ITVBI) at the population level ... -
Earlier onset of flowering and increased reproductive allocation of an annual invasive plant in the north of its novel range
Helsen, Kenny; Acharya, Kamal Prasad; Graae, Bente Jessen; De Kort, Hanne; Brunet, Jörg; Chabrerie, Olivier; Cousins, Sara A.O.; De Frenne, Pieter; Hermy, Martin; Verheyen, Kris; Pelabon, Christophe (Journal article; Peer reviewed, 2020) -
Impact of an invasive alien plant on litter decomposition along a latitudinal gradient
Helsen, Kenny; Smith, Stuart; Brunet, J; Cousins, Sara A.O.; De Frenne, Pieter; Kimberley, Adam; Kolb, Annette; Lenoir, Jonathan; Ma, Shiyu; Michaelis, Jana; Pule, Jan; Verheyen, Kris; Speed, James David Mervyn; Graae, Bente Jessen (Journal article; Peer reviewed, 2018)Invasive alien plant effects on ecosystem functions are often difficult to predict across environmental gradients due to the context-dependent interactions between the invader and the recipient communities. Adopting a ... -
Impacts of an invasive plant on primary production: Testing a functional trait-based framework with a greenhouse experiment
Helsen, Kenny; Kapás, Rozália Erzsebet; Rakvaag, Grete; Speed, James David Mervyn; Graae, Bente Jessen (Journal article; Peer reviewed, 2018)Questions Predicting when invasive species will affect ecosystem functioning remains problematic, with strong contingency upon both the invasive species and the recipient community's identities. Adopting a functional ... -
No genetic erosion after five generations for Impatiens glandulifera populations across the invaded range in Europe
Helsen, Kenny; Hagenblad, Jenny; Acharya, Kamal Prasad; Brunet, Jörg; Cousins, Sara A. O.; Decocq, Guillaume; De Frenne, Pieter; Kimberley, Adam; Kolb, Anette; Michaelis, Jana; Plue, Jan; Verheyen, Kris; Speed, James D M; Graae, Bente Jessen (Journal article; Peer reviewed, 2019)Background The observation that many alien species become invasive despite low genetic diversity has long been considered the ‘genetic paradox’ in invasion biology. This paradox is often resolved through the temporal ...