Nom du corpus

Corpus Systématique Animale

Titre du document

A summary of the impact of acid rain on atlantic salmon ( Salmo salar ) in Canada

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_003859
Auteur(s)
  • W. D. Watt
Affiliation(s)
  • Fisheries Research Branch, B3J 2S7, Halifax, N.S., Canada
Résumé

Within the present North American range of Atlantic salmon, severe acid rain effects are limited to the Southern Upland area of Nova Scotia. In the Southern Upland, long range transport of H2SO4 has caused many rivers to decline in pH to the point where their Atlantic salmon stocks have been destroyed or much diminished. Chemical records show a declining pH trend in N.S. rivers since the early 1950s. Eighty % of the annual variation in H+ concentration can be accounted for by a multiple linear regression model on excess sulphate, total Al and organic anions. It is technically feasible to restore the acidified salmon habitat by the addition of limestone; the total cost of mounting a liming program to restore the lost habitat has been estimated at $4.75 × 106 yr?1. The pre-acidification Atlantic salmon production capacity of the Southern Upland was estimated from physical habitat surveys and tag return data to be about 45 000 fish yr?1. Acidification has caused a 50% decline to the current production level of about 23 000 fish yr?1. The costs of the liming program, when compared to the economic benefits of the anticipated salmon enhancement, are economically unjustifiable. The eradication of salmon from such large regions will hinder future programs to reestablish the species in their former range when pollution of the atmosphere is eventually brought under control. Present plans are for a small liming program to establish a series of refuges for the preservation of nuclei of native salmon stocks.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - earth & environmental sciences
  • 3 - environmental sciences
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Pollution
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Water Science and Technology
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecological Modelling
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Environmental Chemistry
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Environmental Engineering
Catégories WoS
  • 1 - science ; 2 - water resources
  • 1 - science ; 2 - meteorology & atmospheric sciences
  • 1 - science ; 2 - environmental sciences
Identifiant ISTEX
38C1D4940852ECEC9BD9AB8B5789885621EBC3BC
Revue

Water, Air, and Soil Pollution

Année de publication
1987
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.325
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-09RVWF43-4
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