Université de Fribourg

Effects of temperature variability on community structure in a natural microbial food web

Zander, Axel ; Bersier, Louis-Félix ; Gray, Sarah M.

In: Global Change Biology, 2017, vol. 23, no. 1, p. 56–67

Climate change research has demonstrated that changing temperatures will have an effect on community-level dynamics by altering species survival rates, shifting species distributions, and ultimately, creating mismatches in community interactions. However, most of this work has focused on increasing temperature, and still little is known about how the variation in temperature extremes will...

Université de Fribourg

Top predators affect the composition of naive protist communities, but only in their early-successional stage

Zander, Axel ; Gravel, Dominique ; Bersier, Louis-Félix ; Gray, Sarah M.

In: Oecologia, 2016, vol. 180, no. 2, p. 519–528

Introduced top predators have the potential to disrupt community dynamics when prey species are naive to predation. The impact of introduced predators may also vary depending on the stage of community development. Early-succession communities are likely to have small-bodied and fast-growing species, but are not necessarily good at defending against predators. In contrast, late-succession...