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Bryophyte communities in herb-rich forests in Koli, eastern Finland: comparison of forest classifications based on bryophytes and vascular plants

Päivi J. Hokkanen
Annales Botanici Fennici
Vol. 41, No. 5 (2004), pp. 331-365
Stable URL: http://www.jstor.org/stable/23727161
Page Count: 35
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Bryophyte communities in herb-rich forests in Koli, eastern Finland: comparison of forest classifications based on bryophytes and vascular plants
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Abstract

The structure of the bryophyte communities of herb-rich forests has been studied relatively little in northern Europe. In this study, the bryophyte flora of herb-rich forests in eastern Finland was analysed and classified. Altogether 101 sample plots were studied. The species and sample plots were classified with TWINSPAN and ordinated with Detrended Correspondence Analysis (DCA) by using (1) bryophytes (n = 100), (2) vascular plants and bryophytes (n = 265) and (3) vascular plants (n = 165). The results indicated that bryophytes reflected different environmental factors than vascular plants. When classification was based on bryophytes, TWINSPAN clusters corresponded better to topography and stand structure than to 'a priori' site types. When classification was based on vascular plants and bryophytes or on vascular plants, TWINSPAN clusters corresponded quite well to 'a priori' site types. In all classifications, paludified herb-rich forests formed an own group, which might present a transition type between moist fern-rich forests and eutrophic paludified spruce forests. Bryophytes seemed to play a minor role in the classification of herb-rich forests. However, bryophytes improved the classification providing additional information of the site. The most accurate classification was obtained when both vascular plants and bryophytes were used to distinguish different vegetation types simultaneously.

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