Nom du corpus

Corpus Systématique Animale

Titre du document

Why do fleshy-fruit plants of the mediterranean scrub intercept fall-but not spring-passage of seed-dispersing migratory birds?

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Insectes_v2b_01752, Oiseaux_v2b_02650
Auteur(s)
  • Ido Izhaki 1
  • Uriel N. Safriel 1
Affiliation(s)
  • 1) Department of Zoology, The Hebrew University of Jerusalem, 91904, Jerusalem, Israel
Résumé

Production of fleshy fruits by 8 tree and shrub species, and patterns of their utilization by 6 resident and 6 transient bird species, were assessed in an Israeli Mediterranean scrub. Whereas more than half the ripe crop of plants that fruit in one relatively short burst is not removed by birds, the greater part of the crop of species that fruit throughout a long period, is removed. Of two plant species that fruit simultaneously, the one with an inconspicuous fruit is utilized by a single, year-round resident frugivorous bird, whereas the species with bright fruits is utilized by several non-resident and omnivorous bird species. A further two simultaneously fruiting species differ in fat content and the color of their conspicuous ripe fruits; the low-fat fruit being taken by a resident species and the high-fat fruit by a transient congener, just prior to the desert-crossing portion of its Fall-passage. Though more migrants pass through in Spring than in Fall, none of the fleshy-fruit plants fruit in Spring, and most fruit during the Fall. Two non-exclusive explanations for this phenomenon are (a) Fall dispersal ensures immediate germination, with least exposure to desiccation and predation; (b) Spring transients approaching their breeding territories may either be reluctant to spend much time on feeding, or mostly require proteins, amply supplied by the Spring flush of insects, typical of the Mediterranean region. Fall transients approaching the desert require mostly fats and carbohydrates, supplied by fruits. Fruits attract birds easily in the Fall, when insects are scarce.

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
94706A742F46A7D36FC6ACF6B59425B9AAB83061
Revue

Oecologia

Année de publication
1985
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.747
Sous-corpus
  • Insectes
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-G71XSZ7B-S
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