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Kergunteuil, Alan

Nom
Kergunteuil, Alan
Affiliation principale
Identifiants
https://libra.unine.ch/handle/123456789/1052

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  • Publication
    Accès libre
    Relative contribution of high and low elevation soil microbes and nematodes to ecosystem functioning
    (2022-1-7)
    Semeraro, Sarah 
    ;
    Kergunteuil, Alan 
    ;
    Sánchez-Moreno, Sara
    ;
    Puissant, Jérémy
    ;
    Goodall, Tim
    ;
    Griffiths, Robert
    ;
    Rasmann, Sergio 
    Ecosystem productivity is largely dependent on soil nutrient cycling which, in turn, is driven by decomposition rates governed by locally adapted below-ground microbial and soil communities. How climate change will impact soil biota and the associated ecosystem functioning, however, remains largely an open question. To address this gap, we first characterized differences in soil microbial and nematode communities as well as functional characteristics from soils collected from the foothills or in sub-alpine elevations of the Alps. We next performed a full-factorial reciprocal transplant common garden experiment at two elevations, and asked whether elevation-related functional and taxonomic differences are maintained or can be altered depending on the local climatic conditions. For this, we separately transplanted soil microbial and nematode communities from low and high elevation in their home or opposite elevation in pots added with a common plant community. We found evidence for taxonomic and functional differentiation of the microbial and nematode communities when collected at high or low elevation. Specifically, we observed a decrease in microbial diversity and activity at high elevation, and additionally, through nematodes' functional characterization, we found increased fungal-dominated energy channels at high elevation. Moreover, according to the reciprocal transplant experiment, while we found little effect of soil biodiversity change based on elevation of origin on plant growth and plant community composition, soils inoculated with microbes originating from low elevation respired more than those originating from high elevation, particularly when at low elevation. This observation correlates well with the observed faster carbon degradation rates by the low elevation microbial communities. Climate change can reshuffle soil communities depending on organism-specific variation in range expansion, ultimately affecting soil fertility and carbon-cycle dynamics.
  • Publication
    Accès libre
    Novel trophic interactions under climate change promote alpine plant coexistence
    (2020-12-18)
    Descombes, Patrice
    ;
    Pitteloud, Camille
    ;
    Glauser, Gaétan
    ;
    Defossez, Emmanuel
    ;
    Kergunteuil, Alan 
    ;
    Allard, Pierre-Marie
    ;
    Rasmann, Sergio 
    ;
    Pellissier, Loïc
  • Publication
    Accès libre
    Contrasting responses of above- and below-ground herbivore communities along elevation
    (2020-10-19)
    Pitteloud, Camille
    ;
    Descombes, Patrice
    ;
    Sánchez Moreno, Sara
    ;
    Kergunteuil, Alan 
    ;
    Ibanez, Sebastien
    ;
    Rasmann, Sergio 
    ;
    Pellissier, Loïc
  • Publication
    Accès libre
    Tritrophic interactions follow phylogenetic escalation and climatic adaptation
    (2020-2-7)
    Kergunteuil, Alan 
    ;
    Humair, Lauréline
    ;
    Maire, Anne-Laure
    ;
    Moreno-Aguilar, Maria Fernanda
    ;
    Godschalx, Adrienne 
    ;
    Catalan, Pilar
    ;
    Rasmann, Sergio 
  • Publication
    Accès libre
  • Publication
    Accès libre
    Soil nematode abundance and functional group composition at a global scale
    (2019-7-24)
    van den Hoogen, Johan
    ;
    Geisen, Stefan
    ;
    Routh, Devin
    ;
    Ferris, Howard
    ;
    Traunspurger, Walter
    ;
    Wardle, David A
    ;
    de Goede,, Ron G. M.
    ;
    Adams, Byron J.
    ;
    Ahmad, Wasim
    ;
    S. Andriuzzi, Walter
    ;
    Bardgett, Richard D.
    ;
    Bonkowski, Michael
    ;
    Campos-Herrera, Raquel
    ;
    E. Cares, Juvenil
    ;
    Caruso, Tancredi
    ;
    de Brito Caixeta, Larissa
    ;
    Chen, Xiaoyun
    ;
    Costa, Sofia R.
    ;
    Creamer, Rachel
    ;
    Mauro da Cunha Castro, José
    ;
    Dam, Marie
    ;
    Djigal, Djibril
    ;
    Escuer, Miguel
    ;
    Griffiths, Bryan S.
    ;
    Gutiérrez, Carmen
    ;
    Hohberg, Karin
    ;
    Kalinkina, Daria
    ;
    Kardol, Paul
    ;
    Kergunteuil, Alan 
    ;
    Korthals, Gerard
    ;
    Krashevska, Valentyna
    ;
    Kudrin, Alexey A.
    ;
    Li, Qi
    ;
    Liang, Wenju
    ;
    Magilton, Matthew
    ;
    Marais, Mariette
    ;
    Rodríguez Martín, José Antonio
    ;
    Matveeva, Elizaveta
    ;
    Mayad, El Hassan
    ;
    Mulder, Christian
    ;
    Mullin, Peter
    ;
    Neilson, Roy
    ;
    Nguyen, T. A. Duong
    ;
    Nielsen, Uffe N.
    ;
    Okada, Hiroaki
    ;
    Palomares Rius, Juan Emilio
    ;
    Pan, Kaiwen
    ;
    Peneva, Vlada
    ;
    Pellissier, Loïc
    ;
    Pereira da Silva, Julio Carlos
    ;
    Pitteloud, Camille
    ;
    Powers, Thomas O.
    ;
    Powers, Kirsten
    ;
    Quist, Casper W.
    ;
    Rasmann, Sergio 
    ;
    Sánchez Moreno, Sara
    ;
    Scheu, Stefan
    ;
    Setälä, Heikki
    ;
    Sushchuk, Anna
    ;
    Tiunov, Alexei V.
    ;
    Trap, Jean
    ;
    van der Putten, Wim H
    ;
    Vestergård, Mette
    ;
    Villenave, Cecile
    ;
    Waeyenberge, Lieven
    ;
    Wilschut, Rutger
    ;
    Wright, Daniel G.
    ;
    Yang, Jiue-in
    ;
    Crowther, Thomas Ward
  • Publication
    Métadonnées seulement
  • Publication
    Métadonnées seulement
    Inducibility of chemical defences in young oak trees is stronger in species with high elevational ranges
    (2018-12-31)
    Galmán, Andrea
    ;
    Petry, William K
    ;
    Abdala-Roberts, Luis
    ;
    Butrón, Ana
    ;
    Francisco, Marta
    ;
    Kergunteuil, Alan 
    ;
    Rasmann, Sergio 
    ;
    Moreira, Xoaquin
  • Publication
    Restriction temporaire
    Environmental gradients and the evolution of tri‐trophic interactions
    (2018-11-28)
    Kergunteuil, Alan 
    ;
    Röder, Gregory 
    ;
    Rasmann, Sergio 
    Long‐standing theory predicts herbivores and predators should drive selection for increased plant defences, such as the specific production of volatile organic compounds for attracting predators near the site of damage. Along elevation gradients, a general pattern is that herbivores and predators are abundant at low elevation and progressively diminish at higher elevations. To determine whether plant adaptation along such a gradient influences top‐down control of herbivores, we manipulated soil predatory nematodes, root herbivore pressure and plant ecotypes in a reciprocal transplant experiment. Plant survival was significantly higher for low‐elevation plants, but only when in the presence of predatory nematodes. Using olfactometer bioassays, we showed correlated differential nematode attraction and plant ecotype‐specific variation in volatile production. This study not only provides an assessment of how elevation gradients modulate the strength of trophic cascades, but also demonstrates how habitat specialisation drives variation in the expression of indirect plant defences.