Nom du corpus

Corpus Systématique Animale

Titre du document

Species turnover of a continental bird fauna: Northern Europe, 1850–1970

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_00468
Auteur(s)
  • Olli Järvinen 1
  • Staffan Ulfstrand 1
Affiliation(s)
  • 1) Department of Zoology, Box 561, S-751 22, Uppsala, Sweden
Résumé

Faunistic information shows that Denmark, Norway, Sweden and Finland were colonized by an average of 2.8 species (winners) and lost 0.6 species (losers) per decade and country in 1850–1970. The smallest passerines had best changes of colonization, but body size and colonization success were not related in nonpasserines; extinctions were fairly common among the largest species. Turnover was highest in a faunal group derived from steppe regions and in widely but often patchily distributed species. Population trends were generally similar over a larger region. Species turnover has changed the total number of breeding pairs only a little, but the colonization rate has been highest after 1950, when quantitative population changes have also been extensive. Extinction was most often caused by persecution and/or habitat changes by man (e.g. destruction of old forests). As large nonpasserines are often hunted or persecuted, they were frequent among the losers, many of which have specialized habitat requirements and usually migrate to the tropics. Over 50 of the 88 winners have been favoured by man's direct measures, such as introductions (3 spp.), relaxed persecution, or improved food conditions. Habitat changes (eutrophication, reduced grazing, and conifer plantations) stand out as major factors and may subtly interact with population parameters. Perturbation of tropical habitats in this century may have benefitted many Palearctic winter visitors: the frequency of tropical migrants among the winners has increased from 10% before 1900 to 38% after 1900. Population changes in central parts of the range probably led to several colonizations and extinctions at the periphery. In theoretical terms, r-selected species (small body size, large clutch size) were often winners, while K-species comprised the bulk of the losers, but this is no more than a general trend. Judged by their faunal origin, species adapted to effective dispersal were often winners, but also seemed vulnerable to environmental deterioration. Because many winners have invaded habitats that have been available for a long time, North European bird communities are probably often unsaturated.

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
409AC39A6651C997445BA11EBF83965B468DCCFA
Revue

Oecologia

Année de publication
1980
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
10
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-DGFDSZJD-3
Powered by Lodex 9.3.8