6 Works

Data from: Enhanced light interception and light use efficiency explain overyielding in young tree communities

Laura Williams, Ethan Butler, Jeannine Cavender-Bares, Artur Stefanski, Karen Rice, Christian Messier, Alain Paquette & Peter Reich
Diverse plant communities are often more productive than mono-specific ones. Several possible mechanisms underlie this phenomenon but their relative importance is unknown. Here we investigated whether light interception alone or in combination with light use efficiency (LUE) of dominant and subordinate species explained greater productivity of mixtures relative to monocultures (i.e. overyielding) in 108 young experimental tree communities. We found mixed-species communities that intercepted more light than their corresponding monocultures had 84% probability of overyielding....

Exotics are more complementary over time in tree biodiversity-ecosystem functioning experiments

Michael Belluau, Alain Paquette, Dominique Gravel, Peter Reich, Artur Stefanski & Christian Messier
Background and aims The Biodiversity – Ecosystem Functioning (BEF) literature proposes that ecosystem functioning increases with biodiversity because of complementarity in resource use among species, associated with functional diversity. In this study, we challenge the trait-based ecology framework by comparing congeneric exotic (European) and native (North American) tree species showing similar resource-use functional trait values. The trait-based framework suggests that two functionally equivalent species should play similar roles in a community, resulting in similar interactions...

Data from: Indirect genetic and environmental effects on behaviours, morphology, and life-history traits in a wild Eastern chipmunk population

Francesca Santostefano
Additive genetic variance in a trait reflects its potential to respond to selection, which is key for adaptive evolution in the wild. Social interactions contribute to this genetic variation through indirect genetic effects —the effect of an individual’s genotype on the expression of a trait in a conspecific. However, our understanding of the evolutionary importance of indirect genetic effects in the wild and of their strength relative to direct genetic effects is limited. In this...

Overyielding in young tree communities does not support the stress-gradient hypothesis and is favoured by functional diversity and higher water availability

Michael Belluau, Vitali Valentina, Parker William, Paquette Alain & Messier Christian
Summary: Biodiversity effects on productivity and other ecosystem functions are strongly dependent on climate and resource availability. Based on the stress-gradient hypothesis, under conditions of greater abiotic stress, diversity effects on plant performance are intensified due to the increased relative importance of positive plant interactions. However, whether this hypothesis is consistently applicable in forest systems remains unclear. A field trial was established to test the stress-gradient hypothesis and examine diversity effects on aboveground biomass production...

Supplementary material for: Building alternative consensus trees and supertrees using k-means and Robinson and Foulds distance

Vladimir Makarenkov
Each gene has its own evolutionary history which can substantially differ from the evolutionary histories of other genes. For example, some individual genes or operons can be affected by specific horizontal gene transfer and recombination events. Thus, the evolutionary history of each gene should be represented by its own phylogenetic tree which may display different evolutionary patterns from the species tree that accounts for the main patterns of vertical descent. The output of traditional consensus...

Linking genetic, morphological, and behavioural divergence between inland island and mainland deer mice

Joshua Miller, Dany Garant, Charles Perrier, Tristan Juette, Joël Jameson, Denis Réale, Eric Normandeau & Louis Bernatchez
The island syndrome hypothesis (ISH) stipulates that, as a result of local selection pressures and restricted gene flow, individuals from island populations should differ from individuals within mainland populations. Specifically, island populations are predicted to contain individuals that are larger, less aggressive, more sociable, and that invest more in their offspring. To date, tests of the ISH have mainly compared oceanic islands to continental sites, and rarely smaller spatial scales such as inland watersheds. Here,...

Registration Year

  • 2021
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Resource Types

  • Dataset
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Affiliations

  • University of Quebec at Montreal
    6
  • Université du Québec en Outaouais
    3
  • Université de Sherbrooke
    2
  • University of Minnesota
    2
  • MacEwan University
    1
  • Centre d'Ecologie Fonctionnelle et Evolutive
    1
  • Western Sydney University
    1
  • Université Laval
    1
  • Ontario Forest Research Institute
    1