Nom du corpus

Corpus Systématique Végétale

Titre du document

Ecological amplitudes of plant species and the internal consistency of Ellenberg's indicator values for moisture

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Amplitude
  • Gaussian logit curve
  • Indicator value
  • Logit regression
  • Maximum likelihood
  • Optimum
  • Tolerance
  • Unimodal response curve
  • Weighted averaging
Nom du fichier dans la ressource
Syst_veg6_v2_020802
Auteur(s)
  • Cajo J. F. Ter Braak 1
  • Niek J. M. Gremmen 2
Affiliation(s)
  • 1) TNO Institute of Applied Computer Science, P.O. Box 100, 6700 AC, Wageningen, The Netherlands
  • 2) Research Institute for Nature Management, P.O. Box 46, 3956 ZR, Leersum, The Netherlands
Résumé

Two methods for estimating ecological amplitudes of species with respect to Ellenberg's moisture scale are discussed, one based on weighted averaging and the other on maximum likelihood. Both methods are applied to phytosociological data from the province of Noord-Brabant (The Netherlands), and estimate the range of occurrence of species to be about 4–6 units on the moisture scale. Due to the implicit nature of Ellenberg's definition of moisture, it is impossible to improve the indicator values in a statistically sound way on the basis of floristic data only. The internal consistency of the Ellenberg indicator values is checked by using Gaussian logit regression. For 45 out of the 240 species studied the indicator value is inconsistent with those of the other species. The same method is used to estimate the optima and amplitudes of species considered moisture-indifferent and of some species not mentioned by Ellenberg. Some of these ‘indifferent’ species show a remarkably narrow amplitude. It is concluded that the Ellenberg indicator values for moisture form a reasonably consistent system.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
Identifiant ISTEX
E30271931D1FEF8E63AA533BABD87CFAFF92E982
Revue

Vegetatio

Année de publication
1987
Présence de XML structuré
Non
Score qualité du texte
9.052
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-08BRZB55-V
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