Ole Pedersen (Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark), Gary Kendrick (School of Plant Biology and Oceans Institute, The University of Western Australia, Crawley 6009 WA, Australia), Jens Borum (Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark), Andrea Zavala-Perez (School of Plant Biology and Oceans Institute, The University of Western Australia, Crawley 6009 WA, Australia), Tim Colmer (School of Plant Biology, The University of Western Australia, Crawley 6009 WA, Australia)