Fauna of Bryozoa from Kongsfjorden, West Spitsbergen

 Polish Polar Research 23 (2), 2002: 193-206

Bryozoans were collected in Kongsfjorden (79°N and 12°E) in the summer seasons of 1997, 1998, and 1999. In the total of 44 grab, dredge, and SCUBA diving samples 143 taxa were determined: 123 species, 17 to the generic and 3 to the family level. In the investigated material were 24% Arctic species and 66% boreal-Arctic species. This suggests a rather Arctic nature of the fjord. A few boreal species indicate the influence of warm water masses (West Spitsbergen Current). The majority of species (76%) have an encrusting life form. There were 5 species with a frequency of occurrence higher than 20%. These are Electra crustulenta var. arctica (31.82%); Cylindroporella tubulosa (27.27%); Tegella arctica (22.73%); Tegella armifera (20.45%); and Hippothoa divaricata var. arctica (20.45%). Among all identified species 23 were recorded for the first time in the area of Svalbard archipelago. Most (79%) of newly noted species have Arctic distributions. The lower sampling effort of previous researchers most likely accounts for the present enrichment of the list of Bryozoa of Kongsfjorden.

Key words: Arctic, Spitsbergen, Kongsfjorden, Bryozoa.

Instytut Oceanologii, Polska Akademia Nauk, ul. Powstanców Warszawy 55, 81-712 Sopot, Poland (mailing address) kuki@iopan.gda.pl; UNIS (The University Courses on Svalbard), P.O. Box 156, 9171 Longyearbyean, Norway