Ecology and evolution in invasive plants

Plant Population Ecology

Invasion ecology, the study of the distribution and spread of organisms in habitats to which they are not native, has received considerable attention during the past decades. This is mainly a consequence of the increased awareness of the major threats posed by invasions to biodiversity, ecosystem integrity, agriculture and human health. Non-native species have become integral components of ecosystems world-wide, and understanding the causes and consequences of biological invasions has emerged as a fundamental challenge to ecologists and evolutionary biologists. Evidence is increasing that invasive plants can undergo rapid adaptive evolution during the process of range expansion. We expect that evolutionary change during invasions will affect plant-antagonist interactions and thus have important implications for biological control programs targeted at invasive plants. We specifically explore how altered selection in the new range might influence the evolution of plant defense (resistance and tolerance) and life cycle and how this might affect subsequent biological control efficacy.

Research topics

  • Polyploidy and invasion success

  • Sustainable management of weeds and plant invaders (Centaurea, Ambrosia, Rumex)

  • Biological control of invasive plants using insects and fungi

  • Local adaptation and trophic interaction

Interdisciplinary

  • Biological invasions

  • Biodiversity restoration

  • Plant-pathogen/insect interactions

  • Plant ecology and evolution

  • Local adaptations in plants

Contact Person

Prof. Dr. Heinz Müller-Schärer

University of Fribourg
Department of Biology
Website
heinz.mueller-at-unifr.ch
+41 (0)26 300 88 35


Recent publications

  • Title: Influence of plant phenostage and ploidy level on oviposition and feeding of two specialist herbivores of spotted knapweed, Centaurea stoebe
    Author(s): Collins, Alexandra R.; Mueller-Schaerer, Heinz
    Source: BIOLOGICAL CONTROL, 60 (2): 148-153 FEB 2012
    Document type: Article (Details)
  • Title: Allopolyploid origin of highly invasive Centaurea stoebe s.l. (Asteraceae)
    Author(s): Mraz, Patrik; Garcia-Jacas, Nuria; Gex-Fabry, Emilie; et al.
    Source: MOLECULAR PHYLOGENETICS AND EVOLUTION, 62 (2): 612-623 FEB 2012
    Document type: Article (Details)
  • Title: Prospects for biological control of Ambrosia artemisiifolia in Europe: learning from the past
    Author(s): Gerber, E.; Schaffner, U.; Gassmann, A.; et al.
    Source: WEED RESEARCH, 51 (6): 559-573 DEC 2011
    Document type: Article (Details)
  • Differential effects of historical migration, glaciations and human impact on the genetic structure and diversity of the mountain pasture weed Veratrum album L.
    Treier, U. A.; Mueller-Schaerer, H.
    JOURNAL OF BIOGEOGRAPHY, 38 (9): 1776-1791 SEP 2011 (Details)
  • Plant invasions, generalist herbivores, and novel defense weapons
    Schaffner, U; Ridenour, WM; Wolf, VC; et al.
    ECOLOGY 92 (4): 829-835 APR 2011 (Details)