Nom du corpus

Corpus Systématique Animale

Titre du document

Four centuries of cumulative impacts on a Finnish river and its estuary: an ecosystem health-approach

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • fisheries
  • acidification
  • historical degradation
Nom du fichier dans la ressource
Poissons_v2b_001613
Auteur(s)
  • M. Hildén 1
  • D. Rapport 2
Affiliation(s)
  • 1) Environmental Impact Assessment Unit, National Board of Waters and the Environment, P.O. Box 250, SF-00101, Helsinki, Finland
  • 2) Statistics Canada, Coats Building, K1A 0T6, Ottawa, Ontario, Canada
Résumé

Changes in forest cover and draining of wetlands for agriculture appear to have caused changes in the aquatic ecosystem of the River Kyrönjoki by the 16th century. In the 19th century, a decline of salmonid fish populations was widely observed as a further sign of degradation. During the latter half of the present century intensified use of naturally acidic soils has resulted in increased acidic run-off. Deterioration of water quality has extended to the estuary, where it has caused large fish-kills and affected the reproductive success of coastal species. Degradation of the coastal ecosystem, first observed in the decline of salmonids and later as a more general decline of other coastal fish populations, can be linked to spatially restricted events. The loss of key river and estuarine habitats exerted an effect over the reproduction and abundance of species migrating throughout the system. This effect contributed to observed temporal and spatial discontinuities in the degradation history. Monitoring changes in critical habitats may prove to be an early indicator of changes in the health of estuarine and coastal aquatic ecosystems.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Pollution
Identifiant ISTEX
CAA4AF7F3E5161788A3379502DBC9A308EA5C22D
Revue

Journal of Aquatic Ecosystem Health

Année de publication
1993
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.148
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-G68JWSS7-3
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