Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography
Little is known concerning the role of Atlantic salmon (Salmo salar) in the transport of nutrients to and from river systems. We used demographic data from the River Bran, an oligotrophic river in Scotland, UK, to construct a budget for the transport of phosphorus (P) and applied it to investigate t...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f05-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-006 |
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crcansciencepubl:10.1139/f05-006 2023-12-17T10:27:15+01:00 Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography Nislow, Keith H Armstrong, John D McKelvey, Simon 2004 http://dx.doi.org/10.1139/f05-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-006 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 12, page 2401-2410 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/f05-006 2023-11-19T13:38:42Z Little is known concerning the role of Atlantic salmon (Salmo salar) in the transport of nutrients to and from river systems. We used demographic data from the River Bran, an oligotrophic river in Scotland, UK, to construct a budget for the transport of phosphorus (P) and applied it to investigate the effects of management strategies and demographic rates on potential transport. At present, because few adults return to their spawning grounds, salmon export 0.20.5 kg P·year 1 . In contrast, increasing passage rates to a level sufficient to maintain a population without stocking would likely result in a gain of up to several kilograms per year. However, this effect depended on the retention of adult-derived P, which varies across systems and is poorly known at present. Egg-derived P exceeded that from adults at low (<25%) retention rates but was insufficient on its own to balance losses. Increased marine survival rates also increased the potential for positive P flux, while reduction in eggsmolt survival reduced the magnitude of transport. These results indicate the importance of considering within-river movements of individuals and nutrients and the need to fill critical data gaps in assessing the role of Atlantic salmon in nutrient transport. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 61 12 2401 2410 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Nislow, Keith H Armstrong, John D McKelvey, Simon Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Little is known concerning the role of Atlantic salmon (Salmo salar) in the transport of nutrients to and from river systems. We used demographic data from the River Bran, an oligotrophic river in Scotland, UK, to construct a budget for the transport of phosphorus (P) and applied it to investigate the effects of management strategies and demographic rates on potential transport. At present, because few adults return to their spawning grounds, salmon export 0.20.5 kg P·year 1 . In contrast, increasing passage rates to a level sufficient to maintain a population without stocking would likely result in a gain of up to several kilograms per year. However, this effect depended on the retention of adult-derived P, which varies across systems and is poorly known at present. Egg-derived P exceeded that from adults at low (<25%) retention rates but was insufficient on its own to balance losses. Increased marine survival rates also increased the potential for positive P flux, while reduction in eggsmolt survival reduced the magnitude of transport. These results indicate the importance of considering within-river movements of individuals and nutrients and the need to fill critical data gaps in assessing the role of Atlantic salmon in nutrient transport. |
format |
Article in Journal/Newspaper |
author |
Nislow, Keith H Armstrong, John D McKelvey, Simon |
author_facet |
Nislow, Keith H Armstrong, John D McKelvey, Simon |
author_sort |
Nislow, Keith H |
title |
Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
title_short |
Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
title_full |
Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
title_fullStr |
Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
title_full_unstemmed |
Phosphorus flux due to Atlantic salmon ( Salmo salar ) in an oligotrophic upland stream: effects of management and demography |
title_sort |
phosphorus flux due to atlantic salmon ( salmo salar ) in an oligotrophic upland stream: effects of management and demography |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/f05-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-006 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 12, page 2401-2410 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f05-006 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
12 |
container_start_page |
2401 |
op_container_end_page |
2410 |
_version_ |
1785579044805279744 |