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EAUX HISTORIQUES [2 records]
Record 1 - internal organization data 2001-11-29
Record 1, English
Record 1, Subject field(s)
- Air Pollution
Record 1, Main entry term, English
- aquatic acidification
1, record 1, English, aquatic%20acidification
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- water acidification 2, record 1, English, water%20acidification
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
In USA, lakes in the Adirondack Mountains represent the most well-known example of water acidification (Schofield, 1976). The precipitation has a pH of 4.1 - 4.3. 51% of 217 mountain lakes have a pH below 5.0; 90% of these have lost their fish stocks. During the period 1929-1937, only about 4% of the lakes were reported to have pH below 5.0. 3, record 1, English, - aquatic%20acidification
Record 1, Key term(s)
- acidification of waters
Record 1, French
Record 1, Domaine(s)
- Pollution de l'air
Record 1, Main entry term, French
- acidification hydrique
1, record 1, French, acidification%20hydrique
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- acidification des eaux 2, record 1, French, acidification%20des%20eaux
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Modification de l’équilibre acido-basique naturel de certains écosystèmes aquatiques par suite d’une augmentation, d’origine anthropique, de leur concentration en acide. 3, record 1, French, - acidification%20hydrique
Record number: 1, Textual support number: 1 CONT
On esquisse, ci-dessous, le principe des interactions se produisant dans le système des eaux du sol et des roches, le fondement des modèles conçus pour l'acidification hydrique, quelques problèmes, le facteur temps lié à l'acidification, les évidences historiques ainsi que l'impact probable subi par le système aquatique de l'est du Canada. 4, record 1, French, - acidification%20hydrique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Contaminación del aire
Record 1, Main entry term, Spanish
- acidificación de las aguas
1, record 1, Spanish, acidificaci%C3%B3n%20de%20las%20aguas
feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1985-11-28
Record 2, English
Record 2, Subject field(s)
- Air Pollution
Record 2, Main entry term, English
- Henriksen's model
1, record 2, English, Henriksen%27s%20model
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The methodological component that can be applied here to estimate threshold loadings from Henriksen's model must use input assumption as to the steady state lake pH required to protect a given percentage of the aquatic resources. Maintaining a pH of 5.3 would, presumably, prevent lakes from entering the transition phase. 1, record 2, English, - Henriksen%27s%20model
Record 2, French
Record 2, Domaine(s)
- Pollution de l'air
Record 2, Main entry term, French
- modèle de Henriksen
1, record 2, French, mod%C3%A8le%20de%20Henriksen
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- modèle Henriksen 2, record 2, French, mod%C3%A8le%20Henriksen
masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
A défaut de données historiques, des modèles chimiques ont été développés pour déterminer le degré de sensibilité et d’acidification des eaux de surface. Le modèle de Henriksen, par exemple, repose sur le principe selon lequel dans les conditions naturelles, la concentration en calcium est associée à un degré spécifique d’acidité. Dans les lacs affectés par les précipitations acides, pour une même concentration en calcium, l'acidité devrait être plus élevée. 1, record 2, French, - mod%C3%A8le%20de%20Henriksen
Record 2, Spanish
Record 2, Textual support, Spanish
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