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Article
Gravel bar inundation frequency: an important parameter for understanding riparian corridor dynamics
Riparian zones are some of the most valuable and at the same time endangered ecosystems in the world. Their progressive degradation caused by anthropogenic pressure calls for the adoption of effective, resilie...
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Article
Reproductive parameters of Lobaria pulmonaria (L.) Hoffm. in the Urals
The capacity of species for expansion and colonization of new habitats is a key condition for the maintenance of their populations. In this study, specific features of the reproductive potential have been anal...
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Article
Eradication of an epidemic methicillin-resistant Staphylococcus aureus (MRSA) from a geriatric university hospital: evidence from a 10-year follow-up
We report on a successful eradication of methicillin-resistant S. aureus (MRSA) after an epidemic in 1992 in the geriatric ward of a tertiary-care hospital. After identification of MRSA in seven patients, all pat...
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Article
Open AccessPrediction of biodiversity — regression of lichen species richness on remote sensing data
The objective of the present study was to develop a model to predict lichen species richness for six test sites in the Swiss Pre-Alps following a gradient of land use intensity combining airborne remote sensin...
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Article
Recombination and clonal propagation in different populations of the lichen Lobaria pulmonaria
Propagation, dispersal, and establishment are fundamental population processes, and are critical stages in the life cycle of an organism. In symbiotic organisms such as lichens, consisting of a fungus and a po...
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Article
Activity pattern of the moss Hennediella heimii (Hedw.) Zand. in the Dry Valleys, Southern Victoria Land, Antarctica during the mid-austral summer
The activity pattern of the moss Hennediella heimii (Hedw.) Zand. was monitored over a period of 18 days during the austral summer season 2000/2001 at the Canada Flush in Taylor Valley, continental Antarctica. Pr...
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Article
Regulation of cell expansion by the DISTORTED genes in Arabidopsis thaliana: actin controls the spatial organization of microtubules
The control of the directionality of cell expansion was investigated using a class of eight genes, the so-called DISTORTED ( DIS) genes, that are required for proper expansion of leaf trichomes in Arabidopsis th...
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Chapter
Map** Lichen Diversity as an Indicator of Environmental Quality
In the last decades, several methods were proposed for assessing environmental quality — mainly air pollution — on the basis of lichen data (see chapter 4, this volume). At the end of the 80s the predictivity ...
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Chapter
Monitoring with Lichens — Monitoring Lichens
Widespread changes in natural and managed environments in the last century have been associated with rapid development of technology with the capacity for massive destruction of natural environments. This has ...
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Chapter
Biodiversity Assessment Tools — Lichens
To compare lichen diversity indices within and among land-use gradients in different countries and on predetermined substrata of trees, rocks and soil.
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Chapter
Transplanting Lichen Fragments for Provenance-Clone Tests
Lichen species have generally a very broad geographical distribution and grow in ecologically different habitats. We therefore expect ecotype differentiation between different populations. Transplantation expe...
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Chapter
Monitoring Lichen Diversity and Ecosystem Function
Concern about maintaining the biodiversity of lichen species and communities has been an issue with lichenologists for many years. Beginning over 100 years ago with effects of air pollution (see Section 1, thi...
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Chapter
Monitoring Lichens for Conservation: Red Lists and Conservation Action Plans
Lichen-forming fungi are mutualistic symbiotic organisms. The mycobiont coexists with one or more algal or cyanobacterial photobionts. Conservation biology of lichens deals, therefore, with more than one organ...
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Chapter
Methods for Monitoring Biodiversity and Ecosystem Function
In this chapter we review strategies for monitoring lichen biodiversity and for monitoring ecosystem function with lichens. Concern about threats to lichen biodiversity worldwide has led to increased interest ...
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Article
The impact of ozone fumigation and fertilization on chlorophyll fluorescence of birch leaves (Betula pendula)
The impact of ozone fumigation on chlorophyll a fluorescence parameters and chlorophyll content of birch trees grown at high and low fertilization were studied for 6-, 8-, and 12-week old leaves. Fluorescence pa...
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Chapter
Electron Microscopy of Ectomycorrhiza: Methods, Applications, and Findings
Symbiotic organisms, whether mutualistic (Brown and King 1982; Studer et al. 1992) or parasitic (Mendgen and Lesemann 1991), are among the most difficult specimens to prepare for electron microscopy (EM), both...
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Chapter
Diversity of Forest Lichens in Switzerland
As a symbiosis the lichens are among the most threatened organisms in Central Europe and other industrialised regions of the world. Their conservation requires basic information on diversity, distribution and ...
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Chapter
Electron Microscopy of Ectomycorrhiza: Methods, Applications, and Findings
Symbiotic organisms, whether mutualistic (Brown and King 1982; Studer et al. 1992) or parasitic (Mendgen and Lesemann 1991), are among the most difficult specimens to prepare for electron microscopy (EM), both...
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Article
Methadone diluted with contaminated orange juice or raspberry syrup as a potential source of disseminated candidiasis in drug abusers
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Article
Schulabsenzen bei Basler Primarschülern
Dans la couche sociale la plus faible les enfants, dont les mères exercent un métier à plein temps, montrent le taux d'absences le moins important. C'est aussi dans la couche sociale la plus faible, que les ab...
