Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes
We examined the hypothesis that the extent of vegetation cover governs the fluxes of nutrients from boreal and subarctic river catchments to the sea. Fluxes of total organic carbon (TOC) and dissolved inorganic nitrogen, phosphorus, and dissolved silicate (DIN, DIP, and DSi, respectively) are descri...
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crwiley:10.4319/lo.2004.49.5.1871 2024-06-23T07:54:30+00:00 Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes Humborg, Christoph Smedberg,, Erik Blomqvist, Sven Mörth, Carl‐Magnus Brink, Jenni Rahm, Lars Danielsson, Åsa Sahlberg, Jörgen 2004 http://dx.doi.org/10.4319/lo.2004.49.5.1871 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2004.49.5.1871 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2004.49.5.1871 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 49, issue 5, page 1871-1883 ISSN 0024-3590 1939-5590 journal-article 2004 crwiley https://doi.org/10.4319/lo.2004.49.5.1871 2024-06-04T06:36:22Z We examined the hypothesis that the extent of vegetation cover governs the fluxes of nutrients from boreal and subarctic river catchments to the sea. Fluxes of total organic carbon (TOC) and dissolved inorganic nitrogen, phosphorus, and dissolved silicate (DIN, DIP, and DSi, respectively) are described from 19 river catchments and subcatchments (ranging in size from 34 to 40,000 km 2 ) in northern Sweden with a detailed analysis of the rivers Luleälven and Kalix%lven. Fluxes of TOC, DIP, and DSi increase by an order of magnitude with increasing proportion of forest and wetland area, whereas DIN did not follow this pattern but remained constantly low. Principal component analysis on landscape variables showed the importance of almost all land cover and soil type variables associated with vegetation, periglacial environment, soil and bedrock with slow weathering rates, boundary of upper tree line, and percentage of lake area. A cluster analysis of the principal components showed that the river systems could be separated into mountainous headwaters and forest and wetland catchments. This clustering was also valid in relation to river chemistry (TOC, DIP, and DSi) and was confirmed with a redundancy analysis, including river chemistry and principal components as environmental variables. The first axis explains 89% of the variance in river chemistry and almost 100% of the variance in the relation between river chemistry and landscape variables. These results suggest that vegetation change during interglacial periods is likely to have had a major effect on inputs of TOC, DIP, and DSi into the past ocean. Article in Journal/Newspaper Luleälven Northern Sweden Subarctic Wiley Online Library Kalix ENVELOPE(23.156,23.156,65.853,65.853) Luleälven ENVELOPE(22.041,22.041,65.587,65.587) Limnology and Oceanography 49 5 1871 1883 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
We examined the hypothesis that the extent of vegetation cover governs the fluxes of nutrients from boreal and subarctic river catchments to the sea. Fluxes of total organic carbon (TOC) and dissolved inorganic nitrogen, phosphorus, and dissolved silicate (DIN, DIP, and DSi, respectively) are described from 19 river catchments and subcatchments (ranging in size from 34 to 40,000 km 2 ) in northern Sweden with a detailed analysis of the rivers Luleälven and Kalix%lven. Fluxes of TOC, DIP, and DSi increase by an order of magnitude with increasing proportion of forest and wetland area, whereas DIN did not follow this pattern but remained constantly low. Principal component analysis on landscape variables showed the importance of almost all land cover and soil type variables associated with vegetation, periglacial environment, soil and bedrock with slow weathering rates, boundary of upper tree line, and percentage of lake area. A cluster analysis of the principal components showed that the river systems could be separated into mountainous headwaters and forest and wetland catchments. This clustering was also valid in relation to river chemistry (TOC, DIP, and DSi) and was confirmed with a redundancy analysis, including river chemistry and principal components as environmental variables. The first axis explains 89% of the variance in river chemistry and almost 100% of the variance in the relation between river chemistry and landscape variables. These results suggest that vegetation change during interglacial periods is likely to have had a major effect on inputs of TOC, DIP, and DSi into the past ocean. |
format |
Article in Journal/Newspaper |
author |
Humborg, Christoph Smedberg,, Erik Blomqvist, Sven Mörth, Carl‐Magnus Brink, Jenni Rahm, Lars Danielsson, Åsa Sahlberg, Jörgen |
spellingShingle |
Humborg, Christoph Smedberg,, Erik Blomqvist, Sven Mörth, Carl‐Magnus Brink, Jenni Rahm, Lars Danielsson, Åsa Sahlberg, Jörgen Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
author_facet |
Humborg, Christoph Smedberg,, Erik Blomqvist, Sven Mörth, Carl‐Magnus Brink, Jenni Rahm, Lars Danielsson, Åsa Sahlberg, Jörgen |
author_sort |
Humborg, Christoph |
title |
Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
title_short |
Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
title_full |
Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
title_fullStr |
Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
title_full_unstemmed |
Nutrient variations in boreal and subarctic Swedish rivers: Landscape control of land‐ sea fluxes |
title_sort |
nutrient variations in boreal and subarctic swedish rivers: landscape control of land‐ sea fluxes |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.4319/lo.2004.49.5.1871 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2004.49.5.1871 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2004.49.5.1871 |
long_lat |
ENVELOPE(23.156,23.156,65.853,65.853) ENVELOPE(22.041,22.041,65.587,65.587) |
geographic |
Kalix Luleälven |
geographic_facet |
Kalix Luleälven |
genre |
Luleälven Northern Sweden Subarctic |
genre_facet |
Luleälven Northern Sweden Subarctic |
op_source |
Limnology and Oceanography volume 49, issue 5, page 1871-1883 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2004.49.5.1871 |
container_title |
Limnology and Oceanography |
container_volume |
49 |
container_issue |
5 |
container_start_page |
1871 |
op_container_end_page |
1883 |
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1802646675280363520 |