Emilie ChampagneMFFP
Emilie Champagne
Ph.D.
Working on browsing and silvicultural methods adapted to climate change (assisted migration, precommercial thinning)
About
23
Publications
5,438
Reads
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153
Citations
Citations since 2017
Introduction
Interest in forest ecology, plant-herbivore interaction (associational effects, resource selection, chemical compounds, impacts of browsing), adaptation to climate change
Additional affiliations
January 2018 - present
Position
- PostDoc Position
Description
- Also affiliated with Université Laval & Ouranos
September 2017 - December 2017
Groupe DDM
Position
- Researcher
Description
- Litterature search on climate change and environmental impact assessment
December 2011 - December 2012
Education
January 2013 - July 2017
September 2009 - February 2012
Publications
Publications (23)
There is high variability in the level of herbivory between individual plants from the same species with potential effects on population dynamics, community composition, and ecosystem structure and function. This variability can be partly explained by associational effects (i.e., the impact of the presence of neighboring plants on the level of herb...
Non-nutritive phytochemicals (secondary metabolites and fibre) can influence plant resistance to herbivores and have ecological impacts on animal and plant population dynamics. A major hindrance to the ecological study of these phytochemicals is the uncertainty in the compounds one should measure, especially when limited by cost and expertise. With...
Aims
When deciding whether or not to eat a plant, herbivores are influenced by the nutritional value of potential foods, but also indirectly by neighbouring plants (associational effects). We aimed to investigate how the abundance and nutritional quality of neighbours of balsam firs (Abies balsamea ) affects browsing on balsam firs by white‐tailed...
To promote the sustainability of forest ecosystems and maintain ecosystem services to human populations in the context of climate change, forest managers are considering several adaptation tools. One of those, assisted migration, consists of displacing tree species and/or populations to locations with suitable future climate conditions. Assisted mi...
Purpose of Review: Climate change is modifying the dynamics of forests and threatens the supply of ecosystem services from managed forests. In response, managers are developing climate-adapted strategies, mostly focusing on changes in abiotic conditions. Ungulate populations, however, also impact forest integrity and productivity, and the effects o...
Precommercial thinning could be a valuable tool for climate-change adaptation, as it can promote stand diversity while increasing productivity. Softwood and hardwood stands are usually thinned following different methods and we lack recommendations for application in mixedwood stands. We evaluated the effects of precommercial thinning on the growth...
Pour promouvoir l’adaptation des forêts aux changements climatiques, on considère le déplacement de populations
et d’espèces d’arbres du sud vers le nord. Le succès de la migration assistée de ces arbres dépendra de leur
capacité à s’établir, notamment en présence de certains facteurs limitants. Nous avons établi une expérience de
simulation en ser...
Nutritional ecologists aim to predict population or landscape-level effects of food availability, but the tools to extrapolate nutrition from small to large extents are often lacking. The appropriate nutritional ecology currencies should be able to represent consumer responses to food while simultaneously be simple enough to expand such responses t...
To facilitate forest transition to future climate conditions, managers can use adaptive silvicultural tools, for example the assisted translocation of tree species and genotypes to areas with suitable future climate conditions (i.e., assisted migration). Like traditional plantations, however, assisted migration plantations are at risk of failure be...
Terpenes are phytochemicals found in multiple plant genera, especially aromatic herbs and conifers. Terpene content quantification is costly and complex, requiring the extraction of oil content and gas chromatography analyses. Near infrared (NIR) spectroscopy could provide an alternative quantitative method, especially if calibration can be develop...
At high population size, migratory caribou (Rangifer tarandus) are regulated by forage abundance in their summer range. Climate warming likely affects forage availability by increasing productivity and advancing phenology of vegetation. Our objective was to investigate the combined effects of browsing and climate warming on the availability of dwar...
Questions
The presence of a plant species can influence the selection of another plant species by herbivores. Natural communities encompass several plant species and in these multispecific environments, resource selection by herbivores could be partly explained by plant diversity. Our objective was to determine how winter consumption by a large her...
Associational effects, that is, the influence of neighboring plants on herbivory suffered by a plant, are an outcome of forage selection. Although forage selection is a hierarchical process, few studies have investigated associational effects at multiple spatial scales. Because the nutritional quality of plants can be spatially structured, it might...
The presence of neighbouring plants and predation risk can affect trophic interactions between plants and herbivores. We hypothesized that the relative preference for neighbouring species would determine winter herbivory and that predation risk would modulate browsing pressure. We tested these hypotheses using feeding trials in two regions with hig...
There is high variability in the level of herbivory between individual plants from the same species with potential effects on population dynamics, community composition, and ecosystem structure and function. This variability can be partly explained by associational effects i.e. the impact of the presence of neighboring plants on the level of herbiv...
Many deer populations have recently increased worldwide leading to strong direct and indirect ecological and socioeconomical impacts on the composition, dynamic, and functions of forest ecosystems. Deer directly modify the composition and structure of vegetation communities, but they also indirectly affect other species of the ecosystem by modifyin...
Recent climate changes have increased the primary productivity of many Arctic and subarctic regions. Erected shrub has been shown to increase in abundance over the last decades in northern regions in response to warmer climate. At the same time, caribou herds are declining throughout the circumboreal regions. Based on observation of heavy browsing...
Densification of the shrub layer has been reported in many subarctic regions, raising questions about the implication for large herbivores and their resources. Shrubs can tolerate browsing and their level of tolerance could be affected by browsing and soils productivity, eventually modifying resource availability for the caribou. Our objective was...
Questions
Questions (2)
I am at the end of the data extraction process in a meta-analysis. The extracted data come in different forms, the more frequent being : (1) mean and variance of experimental (with plant species x) and control plots (without plant species x), and (2) correlation coefficients of the response variable with abundance/availability/percent cover of plant x.
With type 1, I would like to use Hedge's d. With type 2, I can use directly Pearson's correlation coefficient.
Can I, by transforming Hedge's d into a correlation coefficient (which I know can be done), put the two type of data in the same model?
We want to select a fixed number of deer relocation, coming from collared animals, to sample the vegetation.
1- Do the sampled locations need to be spatially independent? Temporally independent? Spatio-temporally independent?
2- If so, how do you test for the independance. We were currently exploring autocorrelation indices (Moran's I) or spatio-temporal indices (Griffith's).
