Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach
Atlantic salmon (Salmo salar) populations have been extirpated from a number of rivers in Nova Scotia, Canada, as a result of acid rain. We applied the model of acidification of groundwater in catchments (MAGIC) to 35 regional rivers to estimate pre-industrial water chemistry conditions and the pote...
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crcansciencepubl:10.1139/f04-196 2023-12-17T10:27:20+01:00 Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach Clair, Thomas A Dennis, Ian F Amiro, Peter G Cosby, B J 2004 http://dx.doi.org/10.1139/f04-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-196 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 10, page 1965-1975 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/f04-196 2023-11-19T13:38:41Z Atlantic salmon (Salmo salar) populations have been extirpated from a number of rivers in Nova Scotia, Canada, as a result of acid rain. We applied the model of acidification of groundwater in catchments (MAGIC) to 35 regional rivers to estimate pre-industrial water chemistry conditions and the potential future changes in water chemistry under three acid deposition scenarios for the region. Our model results indicate that water chemistry in the study streams remained relatively unchanged until the 1950s and reached their maximum effects on pH in the mid-1970s. The main effects of acid deposition have been a decrease in pH and an increase in base cations to surface waters, as the ion-exchange processes in soils release soil cations into surface waters. We forecast future water chemistry in the rivers using three deposition scenarios: no change in sulfate deposition from year 2000 and 10% and 20% sulfate reductions per decade. We show that the more rapid the reduction in acid deposition, the faster the recovery. We also show that although stream water acidity will recover within a few decades, in most streams, base cations will not recover to pre-industrial levels within the next 100 years. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canada Canadian Journal of Fisheries and Aquatic Sciences 61 10 1965 1975 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Clair, Thomas A Dennis, Ian F Amiro, Peter G Cosby, B J Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Atlantic salmon (Salmo salar) populations have been extirpated from a number of rivers in Nova Scotia, Canada, as a result of acid rain. We applied the model of acidification of groundwater in catchments (MAGIC) to 35 regional rivers to estimate pre-industrial water chemistry conditions and the potential future changes in water chemistry under three acid deposition scenarios for the region. Our model results indicate that water chemistry in the study streams remained relatively unchanged until the 1950s and reached their maximum effects on pH in the mid-1970s. The main effects of acid deposition have been a decrease in pH and an increase in base cations to surface waters, as the ion-exchange processes in soils release soil cations into surface waters. We forecast future water chemistry in the rivers using three deposition scenarios: no change in sulfate deposition from year 2000 and 10% and 20% sulfate reductions per decade. We show that the more rapid the reduction in acid deposition, the faster the recovery. We also show that although stream water acidity will recover within a few decades, in most streams, base cations will not recover to pre-industrial levels within the next 100 years. |
format |
Article in Journal/Newspaper |
author |
Clair, Thomas A Dennis, Ian F Amiro, Peter G Cosby, B J |
author_facet |
Clair, Thomas A Dennis, Ian F Amiro, Peter G Cosby, B J |
author_sort |
Clair, Thomas A |
title |
Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
title_short |
Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
title_full |
Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
title_fullStr |
Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
title_full_unstemmed |
Past and future chemistry changes in acidified Nova Scotian Atlantic salmon ( Salmo salar ) rivers: a dynamic modeling approach |
title_sort |
past and future chemistry changes in acidified nova scotian atlantic salmon ( salmo salar ) rivers: a dynamic modeling approach |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/f04-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-196 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 10, page 1965-1975 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f04-196 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
10 |
container_start_page |
1965 |
op_container_end_page |
1975 |
_version_ |
1785579171540369408 |