Nom du corpus

Corpus Systématique Végétale

Titre du document

Statistical analysis of the lichen vegetation of an avenue in freiburg (South-West Germany), with regard to injurious anthropogenous influences

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Syst_veg6_v2_000552
Auteur(s)
  • V. Wirth 1
  • B. Brinckmann 1
Affiliation(s)
  • 1) Botanisches Institut der Universität, D-8700, Würzburg, Germany
Résumé

This paper describes the epiphytic lichen vegetation on maple trees along an 1.1-km avenue leading from the outer suburbs of Freiburg toward the city center. A special aim of this investigation was to examine the variation in the coverage by lichens altogether and by each lichen species as a function of increasing distance from the city. It required very accurate quantitative recording methods, including the “method of hits” and other statistical techniques. The coverage both of total trunk surface and of sectors facing different directions increases with increasing distance from the city. The distribution pattern of SO2 pollution in winter, especially under certain weather conditions, e.g., during winter highs with very high SO2 concentrations, implies a negative correlation between the amount of SO2 pollution and the total percentage of lichen cover. An influence of factors specific to urban climate and traffic emissions is neglegible. The stress caused by increasing immission from outer suburbs towards the city is also indicated by the decline in coverage by the lichens of foliaceous growth form, the increase in coverage by green algae, and the lichens of crustaceous growth form, especially by the resistant Lecanora conizaeoides. The degree of lichen cover changes with exposure. The differences between the four exposure zones may be caused by climatic differences.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
0CE62E4379EBB479A9D188936159F1279166FE0B
Revue

Oecologia

Année de publication
1977
Présence de XML structuré
Non
Score qualité du texte
9.556
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-0QJC91FP-L
Powered by Lodex 9.3.8