Asplund, Johan
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
- Norwegian University of Life Sciences (NMBU)
Research article2015Peer reviewed
Asplund, Johan; Bokhorst, Stef Frederik; Kardol, Paul; Wardle, David
We investigated how lichen carbon-based secondary compounds (CBSCs) affect abundance of invertebrates in five lichen species growing on the forest floor (Cladonia rangiferina, Cladonia stellaris) or on tree trunks (Evernia prunastri, Hypogymnia physodes, Pseudevemia furfuracea). To do this, CBSCs were removed by rinsing lichen thalli in acetone (which has no adverse effects on the lichens) and the lichens were re-transplanted in their natural habitat. After 4 months there was higher abundance of mites, springtails and spiders in the three epiphytic lichens that had their CBSC concentrations reduced. The increase in predatory spiders following CBSC reduction suggests that the compounds have multitrophic consequences. The acetone treatment reduced the number of nematodes in four of the lichen species. Given that lichens serve as important habitats for a diverse range of invertebrates, increased knowledge of how lichen CBSCs may regulate their abundance helps us to better understand the role that lichens and their defence compounds play in structuring forest food webs. (C) 2015 Elsevier Ltd and The British Mycological Society. All rights reserved.
Acari; Boreal forest; Collembola; Diplopoda; Herbivory; Nematoda; Phenolic compounds; Plant defence; Araneae; Tardigrada
Fungal Ecology
2015, Volume: 18, pages: 18-25
Forest Science
DOI: https://doi.org/10.1016/j.funeco.2015.07.009
https://res.slu.se/id/publ/68380