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Université de Fribourg

Comparing species interaction networks along environmental gradients: Networks along environmental gradients

Pellissier, Loïc ; Albouy, Camille ; Bascompte, Jordi ; Farwig, Nina ; Graham, Catherine ; Loreau, Michel ; Maglianesi, Maria Alejandra ; Melián, Carlos J. ; Pitteloud, Camille ; Roslin, Tomas ; Rohr, Rudolf ; Saavedra, Serguei ; Thuiller, Wilfried ; Woodward, Guy ; Zimmermann, Niklaus E. ; Gravel, Dominique

In: Biological Reviews, 2018, vol. 93, no. 2, p. 785–800

Knowledge of species composition and their interactions, in the form of interaction networks, is required to understand processes shaping their distribution over time and space. As such, comparing ecological networks along environmental gradients represents a promising new research avenue to understand the organization of life. Variation in the position and intensity of links within networks...

Université de Fribourg

Responses of coral reef fishes to past climate changes are related to life‐history traits

Ottimofiore, Eduardo ; Albouy, Camille ; Leprieur, Fabien ; Descombes, Patrice ; Kulbicki, Michel ; Mouillot, David ; Parravicini, Valeriano ; Pellissier, Loïc

In: Ecology and Evolution, 2017, vol. 7, no. 6, p. 1996–2005

Coral reefs and their associated fauna are largely impacted by ongoing climate change. Unravelling species responses to past climatic variations might provide clues on the consequence of ongoing changes. Here, we tested the relationship between changes in sea surface temperature and sea levels during the Quaternary and present-day distributions of coral reef fish species. We investigated...

Université de Fribourg

Community‐level plant palatability increases with elevation as insect herbivore abundance declines

Descombes, Patrice ; Marchon, Jérémy ; Pradervand, Jean-Nicolas ; Bilat, Julia ; Guisan, Antoine ; Rasmann, Sergio ; Pellissier, Loïc

In: Journal of Ecology, 2017, vol. 105, no. 1, p. 142–151

Plants protect themselves against herbivore attacks through a myriad of physical structures and toxic secondary metabolites. Together with abiotic factors, herbivores are expected to modulate plant defence strategies within plant assemblages. Because the abundance of insect herbivore decreases in colder environments, the palatability of plants in communities at higher elevation should shift...

Université de Fribourg

Simulated shifts in trophic niche breadth modulate range loss of alpine butterflies under climate change

Descombes, Patrice ; Pradervand, Jean-Nicolas ; Golay, Joaquim ; Guisan, Antoine ; Pellissier, Loïc

In: Ecography, 2016, vol. 39, no. 8, p. 796–804

Species currently track suitable abiotic and biotic conditions under ongoing climate change. Adjustments of trophic interactions may provide a mechanism for population persistence, an option that is rarely included in model projections. Here, we model the future distribution, of butterflies in the western Alps of Switzerland under climate change, simulating potential diet expansion resulting...

Université de Fribourg

Differential phenotypic and genetic expression of defence compounds in a plant–herbivore interaction along elevation

Salgado, Ana L. ; Suchan, Tomasz ; Pellissier, Loïc ; Rasmann, Sergio ; Ducrest, Anne-Lyse ; Alvarez, Nadir

In: Royal Society Open Science, 2016, vol. 3, no. 9, p. 160226

Elevation gradients impose large differences in abiotic and biotic conditions over short distances, in turn, likely driving differences in gene expression more than would genetic variation per se, as natural selection and drift are less likely to fix alleles at such a narrow spatial scale. As elevation increases, the pressure exerted on plants by herbivores and on arthropod herbivores by...

Université de Fribourg

Historical and contemporary determinants of global phylogenetic structure in tropical reef fish faunas

Leprieur, Fabien ; Colosio, Simona ; Descombes, Patrice ; Parravicini, Valeriano ; Kulbicki, Michel ; Cowman, Peter F. ; Bellwood, David R. ; Mouillot, David ; Pellissier, Loïc

In: Ecography, 2016, vol. 39, no. 9, p. 825–835

Identifying the main determinants of tropical marine biodiversity is essential for devising appropriate conservation measures mitigating the ongoing degradation of coral reef habitats. Based on a gridded distribution database and phylogenetic information, we compared the phylogenetic structure of assemblages for three tropical reef fish families (Labridae: wrasses, Pomacentridae: damselfishes...

Université de Fribourg

Plate tectonics drive tropical reef biodiversity dynamics

Leprieur, Fabien ; Descombes, Patrice ; Gaboriau, Théo ; Cowman, Peter F. ; Parravicini, Valeriano ; Kulbicki, Michel ; Melián, Carlos J. ; Santana, Charles N. de ; Heine, Christian ; Mouillot, David ; Bellwood, David R. ; Pellissier, Loïc

In: Nature Communications, 2016, vol. 7, p. 11461

The Cretaceous breakup of Gondwana strongly modified the global distribution of shallow tropical seas reshaping the geographic configuration of marine basins. However, the links between tropical reef availability, plate tectonic processes and marine biodiversity distribution patterns are still unknown. Here, we show that a spatial diversification model constrained by absolute plate motions...

Université de Fribourg

Past climate‐driven range shifts and population genetic diversity in arctic plants

Pellissier, Loïc ; Eidesen, Pernille Bronken ; Ehrich, Dorothee ; Descombes, Patrice ; Schönswetter, Peter ; Tribsch, Andreas ; Westergaard, Kristine Bakke ; Alvarez, Nadir ; Guisan, Antoine ; Zimmermann, Niklaus E. ; Normand, Signe ; Vittoz, Pascal ; Luoto, Miska ; Damgaard, Christian ; Brochmann, Christian ; Wisz, Mary S. ; Alsos, Inger Greve

In: Journal of Biogeography, 2015, p. -

High intra-specific genetic diversity is necessary for species adaptation to novel environments under climate change, but species tracking suitable conditions are losing alleles through successive founder events during range shift. Here, we investigated the relationship between range shift since the Last Glacial Maximum (LGM) and extant population genetic diversity across multiple plant species...

Université de Fribourg

Forecasted coral reef decline in marine biodiversity hotspots under climate change

Descombes, Patrice ; Wisz, Mary S. ; Leprieur, Fabien ; Parravicini, Valerianio ; Heine, Christian ; Olsen, Steffen M. ; Swingedouw, Didier ; Kulbicki, Michel ; Mouillot, David ; Pellissier, Loïc

In: Global Change Biology, 2015, vol. 21, no. 7, p. 2479–2487

Coral bleaching events threaten coral reef habitats globally and cause severe declines of local biodiversity and productivity. Related to high sea surface temperatures (SST), bleaching events are expected to increase as a consequence of future global warming. However, response to climate change is still uncertain as future low-latitude climatic conditions have no present-day analogue. Sea surface...

Université de Fribourg

Using species richness and functional traits predictions to constrain assemblage predictions from stacked species distribution models

D'Amen, Manuela ; Dubuis, Anne ; Fernandes, Rui F. ; Pottier, Julien ; Pellissier, Loïc ; Guisan, Antoine

In: Journal of Biogeography, 2015, p. –

Aim: Modelling species distributions at the community level is required to make effective forecasts of global change impacts on diversity and ecosystem functioning. Community predictions may be achieved using macroecological properties of communities (macroecological models, MEM), or by stacking of individual species distribution models (stacked species distribution models, S-SDMs). To obtain...