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Linnaeus' Flora Kofsöensis revisited — floristic changes during 260 years in a small island of the lake Mälaren
Author(s) -
Jerling Lenn
Publication year - 1998
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1998.tb01549.x
Subject(s) - floristics , biology , flora (microbiology) , vegetation (pathology) , ecology , abundance (ecology) , period (music) , botany , species richness , paleontology , medicine , pathology , bacteria , physics , acoustics
In 1731 Linnaeus made a total inventory of a small island in Lake Mälaren, Sweden. In 1952 a new inventory was made. I repeated this 1982 and 1992. The present study compares 17 characteristics of the species which are persisting during the whole period to those which are colonising and those which go extinct. The turnover of species is high and only 40 percent of the 86 species initially found are still present in the last observation. The number of species increases from 86 in 1731 to 105 in 1952, 122 in 1982 and to 127 in 1992. Some species found in the seed bank are not represented in the present vegetation. The classification spectra to some extent reflect the changes of the surrounding landscape, from strong antropogenic influence to relaxed but later again intensified, but the classifications seem overall to be too crude to have an acceptable explanatory power for changes in species composition.