2020 Crustaceana  
PREFACE On the 16 th of July 2012, the eminent Chinese carcinologist Prof. Ruiyu Liu (known as J. Y. Liu or Jui-yu Liu to his carcinological colleagues and friends around the world) passed on. No longer would his friends, colleagues and students be able to rely on his invaluable knowledge of taxonomy, systematics, phylogeny, macrobenthos and marine culture for their work. China and the carcinological world, will miss his selfless enthusiasm and wisdom. Prof. Liu was a polymath! As his students,
more » ... we were always surprised he knew the Latin names of so many plant and microbe species! And Latin is not the easiest language for Chinese scientists. We have also been deeply touched by his meticulousness, patience and kindness to colleagues and students alike -and not just those in his disciplines. Even today, seven years after he left us, we still often talk about and recall the deeds of Prof. Liu with the greatest of respect. Prof. Liu's research fields covered a variety of disciplines in marine biology. He was one of the founders of carcinology, marine macrobenthic ecology, and the founder of marine crustacean culture in China. Since the 1940s, he and his students have carried out taxonomic studies on many crustacean groups such as Decapoda, Cirripedia, Amphipoda, Stomatopoda and Mysida; mastering their taxonomy, species compositions in habitats, distributions and overall diversity. His first monograph, "The Economic Shrimps from Northern China", published in 1955, is a classic crustacean reference, still widely cited in China. Subsequently, a series of monographs on the crustacean fauna of China, including three volumes of "Fauna Sinica", and almost 100 papers on crustacean taxonomy, were published by him and his collaborators. These works, mostly on crustacean diversity in China, substantially expanded our knowledge of faunal compositions in Chinese waters, their zoogeographic characteristics as well as the phylogenetic relationships among many groups. In the 1960s, Prof. Liu divided the macrobenthic communities of China seas and defined several key habitats. For example, he found for the first time that the cold-water community in the deep-water area of the central Yellow Sea was protected by the cold waters of the Yellow Sea Cold Water Mass. He also highlighted that this community was part of the Fauna of the North Pacific Temperate Zone, distinct from the warm water fauna of the Indo-West Pacific as well as the East and South China Seas. In the domain of aquaculture, Prof. Liu
doi:10.1163/15685403-00004060 fatcat:x5pj5lclozdp5lt6zfxcnv6s7q