caa a22 4500 60552632X CHVBK 20210128100802.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10531-014-0793-4 doi (NATIONALLICENCE)springer-10.1007/s10531-014-0793-4 Bryophyte diversity in Californian grasslands in relation to substrate quality, exotic vascular plants and disturbance [Elektronische Daten] [Risto Virtanen, Anu Eskelinen, Susan Harrison] Bryophyte communities of semi-arid grassland ecosystems are little studied, and it is poorly known how they vary in relation to soil quality, disturbance and the invasion status of vascular plants. By analogy with short-statured, competitively inferior native vascular plants, we hypothesized that bryophytes would show high beta diversity and increasing alpha diversity along a gradient from productive non-serpentine grasslands dominated by exotics to low productivity serpentine grasslands dominated by native vascular plants. We also predicted that disturbance by gophers would benefit bryophyte alpha and beta diversity, especially at the productive end of the soil fertility gradient. We sampled bryophytes in 48 sites in a 3,000ha landscape in the Inner Coast Range of California, USA. We used several multivariate (non-metric multidimensional scaling, PERMDISP) and univariate analysis methods (generalized linear models). As predicted, we found high beta diversity of bryophytes along the soil gradient, and higher cover and richness in unproductive rocky serpentine grasslands than productive and exotic-dominated non-serpentine grasslands. Gopher burrowing had a unimodal influence on bryophyte alpha diversity. Our results show that bryophyte species composition and diversity respond strongly to the same soil gradient that controls vascular grassland species. Bryophytes are likely imperiled by the continued spread of exotic vascular plants, but promoted by moderate disturbances such as gopher burrowing. Springer Science+Business Media Dordrecht, 2014 Beta diversity nationallicence Ecosystem shift nationallicence Microsite limitation nationallicence Soil heterogeneity nationallicence Serpentine nationallicence Virtanen Risto Department of Biology, University of Oulu, PO Box 3000, FI-90014, Oulu, Finland aut Eskelinen Anu Department of Biology, University of Oulu, PO Box 3000, FI-90014, Oulu, Finland aut Harrison Susan Department of Environmental Science and Policy, University of California, One Shields Avenue, 95616, Davis, CA, USA aut Biodiversity and Conservation Springer Netherlands 24/1(2015-01-01), 103-116 0960-3115 24:1<103 2015 24 10531 https://doi.org/10.1007/s10531-014-0793-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10531-014-0793-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Virtanen Risto Department of Biology, University of Oulu, PO Box 3000, FI-90014, Oulu, Finland aut NATIONALLICENCE 700 1- Eskelinen Anu Department of Biology, University of Oulu, PO Box 3000, FI-90014, Oulu, Finland aut NATIONALLICENCE 700 1- Harrison Susan Department of Environmental Science and Policy, University of California, One Shields Avenue, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Biodiversity and Conservation Springer Netherlands 24/1(2015-01-01), 103-116 0960-3115 24:1<103 2015 24 10531