title: A tribute to Per Halldal (1922-1986), a Norwegian photobiologist in Sweden.
abstract: We present here a tribute to Per Halldal (February 2, 1922-March 26, 1986), a leader, an instrumentalist, an expert on phototaxis in algae, and one whom we remember, even after 20 years of his death, as a person who spread joy, enthusiasm and knowledge wherever he went.
authors.affiliation: Department of Cell and Organism Biology, Lund University, Sölvegatan 35, SE-223 62, Lund, Sweden. Lars_Olof.Bjorn@cob.lu.se
authors.forename: Lars Olof
authors.initials: LO
authors.lastname: Björn
authors.forename: Christer
authors.initials: C
authors.lastname: Sundqvist
authors.forename: Gunnar
authors.initials: G
authors.lastname: Oquist
mesh_terms: D049673:History, 20th Century; D009664:Norway; D018462:Photobiology / Q000266:history*; D013548:Sweden