He is a foreign member of the
Royal Society and a reviewing editor of the
scientific journal Science. He was the 1986 recipient of the
ECI Prize of
ecology and wrote the book in the
ECI Prize laureate series
Excellence in Ecology. He served as president 2004-2008 of the
Royal Danish Academy of Sciences and Letters (he has been a member since 1976). In 2006 he was awarded the
A.C. Redfield Lifetime Achievement Award by the
American Society of Limnology and Oceanography. He is a member of the
Norwegian Academy of Science and Letters and of the American
National Academy of Sciences ==References==