Sven Jonasson

TL;DR: The importance of clonal growth in temperate and more northerly ecosystems is apparent when the ground area covered by clonal plants is estimated and the ability to proliferate vegetatively is found within 10 out of 11 classes of vascular plants.

TL;DR: There was no evidence that rodent grazing markedly affected the chemical composition of plants during two rodent cycles on alpine heath in northern Sweden, and secondary metabolites and nutrients failed to show any clear relationship to the 4-yr cycles in rodent density.

TL;DR: It is concluded that both warming and increased soil nutrient availability stimulated the growth of C. tetragona at the fellfield whereas at the heath there was a clear increase in production only if enhanced temperature was combined with nutrient application, providing the first in situ experimental validation of the theory that temperature partly is responsible for altitudinal trends in plant carbon isotope discrimination.

TL;DR: It is suggested that the differential responses of the two growth forms are due to differences in storage and nutrient uptake pathways, with the dwarf shrub having large nutrient storage capacity and access to organic forms of N through its mycorrhizal association.

TL;DR: In this article, the authors assessed effects of factorial warming and additional litter on the soil ecosystem of a subarctic heath in a 7-year-long field experiment, and found that the biological processes and the microbial community composition responded more to the soil and litter moisture conditions than to the change in the quality of the organic matter.