Nom du corpus

Corpus Systématique Végétale

Titre du document

Coexistence of plant species with similar niches

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Coexistence
  • Competition models
  • Diversity
  • Habitat differentiation
  • Niche differentiation
  • Non-equilibrium communities
  • Species richness
Nom du fichier dans la ressource
Syst_veg6_v2_030942
Auteur(s)
  • A. Shmida 1
  • S. Ellner 2
Affiliation(s)
  • 1) Department of Botany, The Hebrew University, Jerusalem, Israel
  • 2) Department of Mathematics and Graduate Program in Ecology, University of Tennessee, 37996, Knoxville, TN, U.S.A.
Résumé

In the context of a simple mathematical model, we derive several mechanisms whereby plant species can coexist in a community without differing in their trophic niches (their relations with habitats, resources and exploiters). The model is based on the dynamics of species turnover in microsites, and incorporates localized competition, non-uniform seed dispersal and aspects of spatiotemporal environmental heterogeneity. These factors, which are not included in most standard competition models, allow stable coexistence of trophically equivalent species due to: (a) Differences in life-history ‘strategy’. (b) Input of seeds from neaby habitats (spatial Mass Effect). (c) Differences in demographic responses to environmental fluctuations (temporal Mass Effect). (d) Turnover in species composition between different habitat patches. Quantitative descriptive studies are presented, demonstrating the occurrence of vegetation patterns predicted on the basis of the hypothesized mechanisms. We also review previously proposed mechanisms that would allow trophically equivalent species to coexist, and explore the theoretical and methodological implications of recognizing coexistence mechanisms independent of trophic niche differentiation. In particular, we propose that these mechanisms contribute to the dissimilarity of within-community replicate samples and the maintenance of many rare species in plant communities.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
Identifiant ISTEX
7A6AD8CA87EFD4273EA20C3B2079BDC8A0A53B2C
Revue

Vegetatio

Année de publication
1984
Présence de XML structuré
Non
Score qualité du texte
9.256
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-092S5GC8-Q
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