Nom du corpus

Corpus Systématique Animale

Titre du document

Stream habitat fragmentation — a threat to biodiversity

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • streams
  • biodiversity
  • ecological island
  • Plecoptera
  • human impact
Nom du fichier dans la ressource
Insectes_v2b_01460, Poissons_v2b_003988
Auteur(s)
  • Peter Zwick
Affiliation(s)
  • Limnologische Flussstation Schlitz des Max-Planck-Instituts für Limnologie, Postfach 260, D-6407, Schlitz, Germany
Résumé

Biodiversity is undisturbed rhithral streams in central Europe is high, with about 1000 resident metazoan species; over 600 insect species occur in the Fulda river (Germany). Longitudinal downstream shift of dominance from rheobiontic to rheophilous and finally to ubiquituos rheoxenic taxa in the potamal is described. Present downstream importance of ubiquituous species probably results from replacement of original potamal communities, present faunas being surrogates. Species losses through human impact are well documented for fish. The case of Plecoptera (10 potamal species either altogether extinct, extinct in Central Europe or extremely endangered) suggests that potamal invertebrates suffered as severe losses as did fish. Human impact on major rivers was so severe also because they occur at distances beyond average dispersal capacity of the fauna, i.e. are widely separate ecological islands, with known risk of species losses. In contrast, faunal exchange between adjacent headwater streams in mountains with intact stream nets is easy, certainly for amphibious insects. However, damage to rhithral streams is becoming increasingly frequent. This fragments stream nets, turning also upper parts of drainage systems into ecological islands, with danger of extinctions. Rhithral biodiversity is thought to be much more endangered by human impact than is presently recognized.

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
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Nature and Landscape Conservation
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - environmental sciences
  • 1 - science ; 2 - ecology
  • 1 - science ; 2 - biodiversity conservation
Identifiant ISTEX
D10BDEE23E6635C44E1FA342EBE2E4D2627E972D
Revue

Biodiversity & Conservation

Année de publication
1992
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.388
Sous-corpus
  • Insectes
  • Poissons
Type de publication
Journal
ark:/67375/1BB-5GPPJRC4-H
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