Past and Future Grand Challenges in Marine Ecosystem Ecology - Borja, Angel; Andersen, Jesper H.; Arvanitidis, Christos D.; Basset, Alberto; Buhl-Mortensen, Lene; Carvalho, Susana; Dafforn, Katherine A.; Devlin, Michelle J.; Escobar-Briones, Elva G.; Grenz, Christian; Harder, Tilmann; Katsanevakis, Stelios; et al. (Frontiers in Marine Science, 2020)