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Front matter
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Preface
Editorial
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Article
Soil characteristics and Chusquea bamboos in the Quercus forests of the Cordillera de Talamanca, Costa Rica
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3
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Article
Lemna yungensis, a new duckweed species from rocks of the Andean Yungas in Bolivia
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15
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Article
Does mowing in summer reduce the abundance of common reed (Phragmites australis)?
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23
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Article
Habitat use of foraging skylarks (Alauda arvensis L.) in an arable landscape with wild flower strips
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37
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Article
Review : Notes on the ecological restoration of fen meadows, ombrogenous bogs and rivers : definitions, techniques, problems
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47
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Article
Research Note : the appearance of two duckweed species in sewage effluents in Yaoundé (Cameroon), and their possible use for sewage treatment and feed production
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63
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Article
Research Note : Untersuchungen zur Trollius - Chiastocheta-Interaktion in kleinen, isolierten Pflanzenpopulationen
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69
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Article
Research Note : the N:P ratio and the nutrient limitation of wetland plants
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77
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Article
Research Project : zur relativen Bedeutung von Nährstoffeintrag und Wasserstand für die Biodiversität in Streuwiesen
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91
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Article
Research Project : testing speciation mechanisms in orchids witz molecular and ecological methods
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103
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Rubric
Summaries of diploma and PhD theses (1997)
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109
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Association News
Annual report of the Geobotanical Institute ETH (1997)
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137
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Advertising
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147
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Table of Contents
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