Received: 6 November 2018 | Revised: 23 November 2018 | Accepted: 5 December 2018 DOI: 10.1111/mec.14974 SPECIAL ISSUE Introduction: Special issue on species interactions, ecological networks and community dynamics – Untangling the entangled bank using molecular techniques Tomas Roslin1 | Michael Traugott2 | Mattias Jonsson1 | Graham N. Stone3 | Simon Creer4 | William O. C. Symondson5 1Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden 2Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Innsbruck, Austria 3Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK 4Molecular Ecology and Fisheries Genetics Laboratory, School of Natural Sciences, Bangor University, Gwynedd, UK 5Cardiff School of Biosciences, Cardiff University, Cardiff, UK Correspondence Tomas Roslin, Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden. Email:
[email protected] Funding information Swedish Research Council VR, Grant/Award Number: Dnr 2016-06872; Swedish University of Agricultural Sciences, Centre for Biological Control KEYWORDS: antagonistic interactions, assembly processes, community ecology, ecological interaction networks, food webs, mutualistic interactions, species interactions 1 | INTRODUCTION for describing both elements of community structure (Roslin & Majaneva, 2016) and how they change in time and space (“commu- nity dynamics”). “It is interesting to contemplate a tangled bank, clothed The last few years have seen a revolution in both sampling and with many plants of many kinds, with birds singing on sequencing technologies. For this reason, it is time to provide a the bushes, with various insects flitting about, and sequel to the seminal Special Issue on the “Molecular Detection with worms crawling through the damp earth, and to of Trophic Interactions” edited five years ago by Symondson and reflect that these elaborately constructed forms, so Harwood (2014).