Ad H L Huiskes Editor

Guido di Prisco was Professor of Biochemistry and CNR (National Research Council) Research Associate, Institute of Biosciences and Bioresources, Naples, Italy. He was the CNR Research Director up until his retirement in 2004. He took part in numerous expeditions in both the Antarctic and Arctic. On September 29 2019, Guido passed away after a serious illness. Howell Edwards is Emeritus Professor of Molecular Spectroscopy, Faculty of Life Sciences, University of Bradford. He is a member of the International Science Team on the RLS Raman instrument for the ExoMars 2020 mission. He has published over 1300 papers on Raman spectroscopy and its applications. Josef Elster is Professor in the Centre for Polar Ecology, Faculty of Science, University of South Bohemia, České Budějovice, and senior scientist, Phycology Centre, Institute of Botany, Academy of Science of the Czech Republic, Třeboň, Czech Republic. His expertise is in the field and laboratory study of polar cyanobacteria and microalgae. He has led or been a member of many polar research expeditions and was founder of the Czech Arctic Research Infrastructure 'Josef Svoboda Station', Svalbard. Ad H. L. Huiskes is a guest scientist at the Netherlands Institute of Sea Research (NIOZ), Yerseke, Netherlands. He led the Unit of Polar Ecology at the Netherlands Institute of Ecology, Yerseke, was acting Director of the Centre of Estuarine and Marine Ecology (now a division of NIOZ), and subsequently acting Director of the Yerseke branch of NIOZ. In addition, he was Vice President of the Scientific Committee for Antarctic Research (SCAR, 2008–2012) and Lecturer of Polar Ecology at the University of Groningen.