Affiner les résultats

Collection spécifique

Langue

Université de Fribourg

Deciphering the biology of Cryptophyllachora eurasiatica gen. et sp. nov., an often cryptic pathogen of an allergenic weed, Ambrosia artemisiifolia

Kiss, Levente ; Kovács, Gábor M. ; Bóka, Károly ; Bohár, Gyula ; Bohárné, Krisztina Varga ; Németh, Márk Z. ; Takamatsu, Susumu ; Shin, Hyeon-Dong ; Hayova, Vera ; Nischwitz, Claudia ; Seier, Marion K. ; Evans, Harry C. ; Cannon, Paul F. ; Ash, Gavin James ; Shivas, Roger G. ; Müller-Schärer, Heinz

In: Scientific Reports, 2018, vol. 8, no. 1, p. 10806

A little known, unculturable ascomycete, referred to as Phyllachora ambrosiae, can destroy the inflorescences of Ambrosia artemisiifolia, an invasive agricultural weed and producer of highly allergenic pollen. The fungus often remains undetectable in ragweed populations. This work was conducted to understand its origin and pathogenesis, a prerequisite to consider its potential as a biocontrol...

Université de Fribourg

Re-establishment of Protea repens after clearing invasive Acacia saligna: Consequences of soil legacy effects and a native nitrophilic weedy species

Nsikani, M.M. ; Wilgen, B.W. van ; Bacher, Sven ; Gaertnera, M.

In: South African Journal of Botany, 2018, vol. 116, p. 103–109

Invasive Australian acacias can alter soil chemistry and microbial communities in areas they invade. After clearing invasive acacias, these changes can persist, and previously invaded areas can become dominated by nitrophilic weedy species. Restoration of viable native plant communities in cleared sites often fails due to a lack of native species re-establishment. Therefore, to improve...

Université de Fribourg

More than “100 worst” alien species in Europe

Nentwig, Wolfgang ; Bacher, Sven ; Kumschick, Sabrina ; Pyšek, Petr ; Vilà, Montserrat

In: Biological Invasions, 2018, vol. 20, no. 6, p. 1611–1621

“One hundred worst” lists of alien species of the greatest concern proved useful for raising awareness of the risks and impacts of biological invasions amongst the general public, politicians and stakeholders. All lists so far have been based on expert opinion and primarily aimed at representativeness of the taxonomic and habitat diversity rather than at quantifying the harm the alien...