J. Knudsen's scientific contributions

Publication (1)

Article
Distribution maps of 23 species of Sphaeriidae are presented; Denmark has 17 sphaeriid species, the Faroes 9, Finland 21, Iceland 11, Norway 20 and Sweden 22. Of the 22 species found today, 15 are holarctic (4 circumpolaric included) and 8 palearctic. -from Authors

Citations

... For some countries, there was no digital information available. In those cases, we used scientific articles and books showing the distributions of our species of interest (e.g., for the FM: Kuiper et al., 1989 in Denmark or Pierchocki and Wawrzyniak-Wydrowska 2016 in Poland; for MC: Jażdżewski et al., 2005) (Table 1) (Tables A.1. and A.2.). ...