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Zurich

  • Elias Landolt
Chapter

Abstract

Zurich, which is the largest city in Switzerland, is situated to the north of the Alps and at the northern end of Lake Zurich in an area with a rather cool sub-oceanic climate. More than 1,400 indigenous or naturalised species of higher plants have been recorded in the city, of which almost 200 (mainly archaeophytes) have become extinct within the last 160 years. The extinctions were caused by habitat loss resulting from the intensification of agricultural production and residential and other forms of development. On the other hand 300 new species have been able to colonize and become established in the city. The reasons for this being general climatic warming and the “heat-island effect” that is a characteristic of the urban environment. The previously relatively cool summers prevented many species from achieving their life cycle, which the recent warmer temperatures now allow them to. Also the milder winters enable many species to survive in the city, over winter, particularly in sheltered places. The absence of really cold winters for more than 20 years has enabled some sub-tropical plants to survive throughout the winter and even set fruit and regenerate from seeds, for example, the palm Trachycarpus fortunei.

Keywords

Administrative Area Garden Plant Ailanthus Altissima Pave Area Montane Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

I am very thankful for the help to the following persons: Walter Lämmler, for preparing the figures and for discussions, Stefan Hose, for information on the environmental management within the city and for making available the list of street trees of Zurich.

Literature Cited

  1. Kölliker A (1839) Verzeichnis der phanerogamischen Gewächse des Cantons Zürich. Orell/Füssli, Zürich.Google Scholar
  2. Kuhn N (1967) Natürliche Waldgesellschaften und Waldstandorte der Umgebung von Zürich. Veröff Geobot Inst ETH Stiftung Rübel, Zürich, 40.Google Scholar
  3. Landolt E (1977) Ökologische Zeigerwerte zur Schweizer Flora. Veröff. Geobot. Inst. ETH, Stiftung Rübel, Zürich, 64.Google Scholar
  4. Landolt E (2000) Some results of a floristic inventory within the city of Zurich. Preslia 72(2–4): 441–455.Google Scholar
  5. Landolt E (2001) Flora der Stadt Zürich (1984–1998). Birkhäuser Verlag, Basel, Boston, Berlin.Google Scholar
  6. Moser D M, Gygax A, Bäumler B, Wyler N, Palese R (2002) Rote Liste der gefährdeten Arten der Schweiz. Farn- und Blütenpflanzen. BUWAL, Bern.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Institut für Integrative Biologie (Swiss Federal Institute of Technology)ETH ZürichZürichSwitzerland

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