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Distribution and ecology of myxomycetes in high‐latitude regions of the Northern Hemisphere
Author(s) -
Stephenson Steven L.,
Novozhilov Yuri K.,
Schnittler Martin
Publication year - 2000
Publication title -
journal of biogeography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 158
eISSN - 1365-2699
pISSN - 0305-0270
DOI - 10.1046/j.1365-2699.2000.00442.x
Subject(s) - subarctic climate , latitude , arctic , temperate climate , ecology , taiga , boreal , northern hemisphere , southern hemisphere , physical geography , tundra , biology , geography , geology , climatology , geodesy
Aim The objective of this study was to analyse the data represented by 1976 specimens of myxomycetes collected in high‐latitude regions of the Northern Hemisphere to obtain information on the biogeographical relationships and patterns of occurrence of these organisms. The question of what factors limit myxomycete distribution in high‐latitude and cold‐dominated regions was also addressed. Location Specimens of myxomycetes considered herein were collected from twelve study areas in Iceland, northern Russia and Alaska, and Greenland. The vast majority of specimens were collected during the period of 1989–98. Methods Nine hundred and thirty‐three specimens were recorded as field collections. In addition, 1043 specimens originated from moist chamber cultures prepared with 1453 substratum samples collected in the various study areas. From a database recording the type of substratum (wood, bark of living trees, litter or dung) for each specimen, patterns of substratum occurrence for particular species of myxomycetes in high‐latitude regions were determined. Results From the 150 species recorded for the twelve study areas, thirty‐three were found to be widely distributed (recorded from at least five study areas), and only forty‐one had a frequency of occurrence higher than 1% either in moist chambers or as field collections. These data were examined in an effort to identify possible factors limiting the distribution of myxomycetes in high‐latitude regions. Main conclusions Upon first inspection, the arctic and subArctic myxomycete biota seems to be a depauperate version of that of temperate and boreal regions. However, a few species elsewhere recorded as rare but found to be fairly common in this study indicate that a certain degree of distinctiveness exists in Arctic and subArctic myxomycetes.