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Bryophytes on boulders

diversity, habitat preferences and conservation aspects

Weibull, Henrik (2000). Bryophytes on boulders. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae. Silvestria, 1401-6230 ; 159
ISBN 91-576-5893-5
[Doctoral thesis]

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Abstract

The influence of different overstorey tree species on the floristic composition of bryophytes growing on boulders was studied in two deciduous forests. Covering tree species and amount of litter were the factors explaining most of the variation in bryophyte species composition. Boulders below base-rich deciduous tree species (ash, elm and maple) had a considerably different bryophyte species composition than boulders below Norway spruce, while the species composition was intermediate below oak and birch. Boulders below base-rich deciduous trees had approximately twice as many species as those below Norway spruce, while boulders below oak and birch were intermediate. Individual plots (1 Ox 10 cm) were on average not more species-rich on large boulders than on small ones, even though large boulders had more species. Transplanted patches of the moss Tortula ruralis were grown below the cover of five tree species. The growth was significantly lower below Norway spruce than below the deciduous tree species, which was related to lower amount of throughfall, lower pH in throughfall and lower relative light flux below Norway spruce. In laboratory experiments Tortula ruralis grew significantly less at pH 4.1 as compared to pH 4.5 or higher. At high RH Antitrichia curtipendula grew significantly more than at low RH. Antitrichia curtipendula grew significantly more and T. ruralis significantly less when watered often (every third day). The bryophyte flora was also studied in permanent plots on boulders in a deciduous forest between 1997 and 1999, in order to study the effects of three litter treatments (deciduous, coniferous or no litter). Species richness increased in plots with deciduous litter and decreased in plots with Norway spruce litter, while it was maintained in plots without litter. There was a considerable variation between years in cover of many species, which reduced the treatment-effect

Authors/Creators:Weibull, Henrik
Title:Bryophytes on boulders
Subtitle:diversity, habitat preferences and conservation aspects
Year of publishing :January 2000
Volume:159
Number of Pages:24
Papers/manuscripts:
NumberReferences
ALLI. Weibull, H. Influence of tree species on the epilithic bryophyte flora in deciduous forests of Sweden Journal of Bvology, In press 11. Weibull, H. & Rydin, H. Bryophyte species richness on boulders: effects of area, habitat diversity and covering tree species. Manuscript 111. Weibull, H., Bengtsson, N. & Larsson, M. Experiments on growth of the mosses Antitrichia curtipendula and Tortula ruralis: effects of moisture and pH. Manuscript IV. Weibull, H. Effects of leaf litter on dynamics of epilithic bryophytes. Manuscri
Place of Publication:Uppsala
ISBN for printed version:91-576-5893-5
ISSN:1401-6230
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
Subjects:Not in use, please see Agris categories
Agrovoc terms:picea abies, broadleaved forests, torula, bryophyta, ph, relative humidity, fields, biodiversity, forest trees
Keywords:disturbance, pH, hepatics, mosses, throughfall, litter, relative humidity, watering frequency, permanent plot, species richness, deciduous forest, Norway spruce, Tortula ruralis, Antitrichia curtipendula.
ID Code:13
Department:(NL, NJ) > Institutionen för naturvårdsbiologi (fr.o.m. 970101)
Deposited By: Staff Epsilon
Deposited On:24 Apr 2002 00:00
Metadata Last Modified:02 Dec 2014 10:01

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