Nom du corpus

Corpus Systématique Végétale

Titre du document

Trends in abundance of tropical forest insects

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Population fluctuations
  • Trends
  • Forest insects
  • Neotropics
  • Panama
Nom du fichier dans la ressource
Syst_veg6_v2_024783
Auteur(s)
  • Henk Wolda
Affiliation(s)
  • Smithsonian Tropical Research Institute, Balboa, Republic of Panama
Résumé

The stability of a large variety of insect populations was studied using 14 years of light-trap data collected in a relatively undisturbed tropical forest in Panama. Special emphasis was placed on trends in abundance over time. A large between-species variation was found in stability, ranging from nearly constant to violently fluctuating. Over a 14-year period 22% of the species with more than 26 individuals caught showed an average trend of more than 10% of their mean abundance per year, and 4% a trend of more than 20% per year. Even among the 78 species represented by more than 1000 individuals, 7 species, 9%, showed a trend of more than 10% of mean abundance per year. These results appear to be incompatible with the generally held tenet that natural populations in undisturbed environments fluctuate within rather narrow abundance limits, and may indicate that at least a certain proportion of natural populations are not kept within such limits by regulatory processes. Actual fluctuating patterns vary a great deal between species, suggesting the absence of some dominant environmental process affecting several species at the same time. The total number of species and individuals, and the associated value of the α-diversity index remained at the same level over the 14 years.

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
2AD6F8A5F9118ACDB1BC83B8356DBFA4425F5434
Revue

Oecologia

Année de publication
1992
Présence de XML structuré
Non
Score qualité du texte
9.279
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-0CGK06BQ-2
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