1. Department of Botany, University of Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain
2. Aquatic Ecosystems, Institute for Food and Agricultural Research and Technology (IRTA), Crta de Poble Nou Km 5.5, E-43540 Sant Carles de la Ràpita, Catalunya, Spain
3. Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz (IDL), Lisboa, Portugal
4. Centro de Investigacións Científicas Avanzadas (CICA), Faculty of Sciences, University of A Coruña, 15071 A Coruña, Spain
5. Department of Earth and Atmospheric Sciences University of Nebraska–Lincoln, NE 68588-0340, USA
6. Fukui Prefectural University, 1-1 Gakuen-cho, Obama, Fukui 917-0003, Japan
7. Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, UK