Acknowledgements
The authors are very grateful to the Sir Alister Hardy Foundation for Ocean Science (SAHFOS, Marine Biological Association, Plymouth, UK, for their permission to analyze data from the Continuous Plankton Recorder Survey. We thank, in particular, Martin Edwards and David Johns of SAHFOS. The research was supported by grants awarded by the Natural Sciences and Engineering Research Council of Canada and Loblaw Companies Limited to JAH, and the European Research Council (COMPLEX-FISH 770884 to Anna Kuparinen). The present study reflects only the authors’ views and that the European Research Council is not responsible for any use that may be made of the information it contains.