Habitat qualities versus long-term continuity as determinants of biodiversity in boreal old-growth swamp forests

Habitat qualities versus long-term continuity as determinants of biodiversity in boreal... Natural swamp forests are extremely rare in Sweden because of extensive drainage and logging activities. This study reports a total of 517 species (148 vascular plants, 131 mosses, 64 hepatics, 142 lichens and 32 wood-inhabiting fungi) from 10 small remnants of boreal old-growth swamp forests. The 195 bryophytes found represent 33% of the total number of bryophyte species in the Swedish boreal flora. As the average area of the forests was only 2ha, this figure clearly illustrates the important role of the swamp forests as centres of bryophyte biodiversity. There was no relationship between the occurrence of 33 lichen and fungi species considered to indicate natural forests with long stand continuity and the known long-term continuity of the forests. The forests most affected by earlier natural and man-made fires harboured more of these species than forests less affected by fire disturbance. The most important variable explaining biodiversity as well as presence of ‘continuity indicator species’ was the amount of dead wood present. A more critical and careful use of the concept of forest continuity is needed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biological Conservation Elsevier

Habitat qualities versus long-term continuity as determinants of biodiversity in boreal old-growth swamp forests

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Publisher
Elsevier
Copyright
Copyright © 1997 Elsevier Ltd
ISSN
0006-3207
DOI
10.1016/S0006-3207(97)00001-3
Publisher site
See Article on Publisher Site

Abstract

Natural swamp forests are extremely rare in Sweden because of extensive drainage and logging activities. This study reports a total of 517 species (148 vascular plants, 131 mosses, 64 hepatics, 142 lichens and 32 wood-inhabiting fungi) from 10 small remnants of boreal old-growth swamp forests. The 195 bryophytes found represent 33% of the total number of bryophyte species in the Swedish boreal flora. As the average area of the forests was only 2ha, this figure clearly illustrates the important role of the swamp forests as centres of bryophyte biodiversity. There was no relationship between the occurrence of 33 lichen and fungi species considered to indicate natural forests with long stand continuity and the known long-term continuity of the forests. The forests most affected by earlier natural and man-made fires harboured more of these species than forests less affected by fire disturbance. The most important variable explaining biodiversity as well as presence of ‘continuity indicator species’ was the amount of dead wood present. A more critical and careful use of the concept of forest continuity is needed.

Journal

Biological ConservationElsevier

Published: Sep 1, 1997

References

  • Wood-inhabiting fungi and substratum decline in selectively logged boreal spruce forests
    Bader, P.; Jansson, S.; Jonsson, B.G.
  • Threatened plant, animal, and fungus species in Swedish forests: distribution and habitat associations
    Berg, Å.; Ehnström, B.; Gustafsson, L.; Hallingbäck, T.; Jonsell, M.; Weslin, J.
  • Nitrate assimilation in coexisting vascular plants in mire and swamp forest habitats in Central Sweden
    Högbom, L.; Ohlson, M.
  • Stand dynamics, regeneration patterns and long-term continuity in boreal old-growth Picea abies swamp forests
    Hörnberg, G.; Ohlson, M.; Zackrisson, O.
  • Importance of spruce swamp-forests for epiphyte diversity and flora on Picea abies in southern and middle boreal Finland
    Kuusinen, M.
  • Cyanobacterial macrolichens on Populus tremula as indicators of forest continuity in Finland
    Kuusinen, M.
  • Crustose lichens as indicators of forest continuity in boreal coniferous forests
    Tibell, L.

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