Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments
To examine the potential influence of terrestrially derived DOM on the Baltic Sea, a year-long study of dissolved organic matter (DOM) was performed in three river catchments in Sweden. One catchment drains into the Bothnian Sea, while two southern catchments drain into the Baltic proper. Dissolved...
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2014
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ftdtupubl:oai:pure.atira.dk:publications/659bd8e7-49ca-4560-bddd-ecacaeea2cea 2024-02-11T10:06:50+01:00 Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments Reader, H. E. Stedmon, C. A. Kritzberg, E. S. 2014 application/pdf https://orbit.dtu.dk/en/publications/659bd8e7-49ca-4560-bddd-ecacaeea2cea https://doi.org/10.5194/bg-11-3409-2014 https://backend.orbit.dtu.dk/ws/files/98468530/Publishers_version.pdf eng eng https://orbit.dtu.dk/en/publications/659bd8e7-49ca-4560-bddd-ecacaeea2cea info:eu-repo/semantics/openAccess Reader , H E , Stedmon , C A & Kritzberg , E S 2014 , ' Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments ' , Biogeosciences , vol. 11 , no. 12 , pp. 3409-3419 . https://doi.org/10.5194/bg-11-3409-2014 Baltic Sea North East Atlantic North Atlantic Atlantic Ocean Bothnian Sea North East Atlantic Sweden Europe Palearctic region biological oxygen demand river catchment seasonal contribution terrestrial organic matter winter temperature Organisms (Organisms) - Organisms [00500] organism common dissolved organic carbon DOC 07504 Ecology: environmental biology - Bioclimatology and biometeorology 07512 Ecology: environmental biology - Oceanography 07514 Ecology: environmental biology - Limnology 10060 Biochemistry studies - General Ecology Environmental Sciences Climatology Freshwater Ecology Marine Ecology GEOSCIENCES MOLECULAR-WEIGHT CLIMATE-CHANGE CARBON BUDGET FOOD-WEB ABSORPTION DEPOSITION ESTUARIES ACIDITY TRENDS WATERS /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2014 ftdtupubl https://doi.org/10.5194/bg-11-3409-2014 2024-01-24T23:57:26Z To examine the potential influence of terrestrially derived DOM on the Baltic Sea, a year-long study of dissolved organic matter (DOM) was performed in three river catchments in Sweden. One catchment drains into the Bothnian Sea, while two southern catchments drain into the Baltic proper. Dissolved organic carbon (DOC) concentrations were positively correlated with discharge from forested catchments over the year. While the overall concentrations of DOC were several times higher in the southern two catchments, higher discharge in the northern catchment resulted in the annual loadings of DOC being on the same order of magnitude for all three catchments. Biological oxygen demand (BOD) was used as a proxy for the lability of carbon in the system. The range of BOD values was similar for all three catchments, however, the ratio of BOD to DOC (an indication of the labile fraction) in Ume river was four times higher than in the southern two catchments. Total annual BOD loading to the Baltic Sea was twice as high in the northern catchment than in the two southern catchments. Lower winter temperatures and preservation of organic matter in the northern catchment combined with an intense spring flood help to explain the higher concentrations of labile carbon in the northern catchment. Lower lability of DOM as well as higher colour in the southern catchments suggest that wetlands (i.e. peat bogs) may be the dominant source of DOM in these catchments, particularly in periods of low flow. With climate change expected to increase precipitation events and temperatures across the region, the supply and quality of DOM delivered to the Baltic Sea can also be expected to change. Our results indicate that DOM supply to the Baltic Sea from boreal rivers will be more stable throughout the year, and potentially have a lower bioavailability. Article in Journal/Newspaper North Atlantic North East Atlantic Technical University of Denmark: DTU Orbit Biogeosciences 11 12 3409 3419 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Baltic Sea North East Atlantic North Atlantic Atlantic Ocean Bothnian Sea North East Atlantic Sweden Europe Palearctic region biological oxygen demand river catchment seasonal contribution terrestrial organic matter winter temperature Organisms (Organisms) - Organisms [00500] organism common dissolved organic carbon DOC 07504 Ecology: environmental biology - Bioclimatology and biometeorology 07512 Ecology: environmental biology - Oceanography 07514 Ecology: environmental biology - Limnology 10060 Biochemistry studies - General Ecology Environmental Sciences Climatology Freshwater Ecology Marine Ecology GEOSCIENCES MOLECULAR-WEIGHT CLIMATE-CHANGE CARBON BUDGET FOOD-WEB ABSORPTION DEPOSITION ESTUARIES ACIDITY TRENDS WATERS /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Baltic Sea North East Atlantic North Atlantic Atlantic Ocean Bothnian Sea North East Atlantic Sweden Europe Palearctic region biological oxygen demand river catchment seasonal contribution terrestrial organic matter winter temperature Organisms (Organisms) - Organisms [00500] organism common dissolved organic carbon DOC 07504 Ecology: environmental biology - Bioclimatology and biometeorology 07512 Ecology: environmental biology - Oceanography 07514 Ecology: environmental biology - Limnology 10060 Biochemistry studies - General Ecology Environmental Sciences Climatology Freshwater Ecology Marine Ecology GEOSCIENCES MOLECULAR-WEIGHT CLIMATE-CHANGE CARBON BUDGET FOOD-WEB ABSORPTION DEPOSITION ESTUARIES ACIDITY TRENDS WATERS /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Reader, H. E. Stedmon, C. A. Kritzberg, E. S. Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
topic_facet |
Baltic Sea North East Atlantic North Atlantic Atlantic Ocean Bothnian Sea North East Atlantic Sweden Europe Palearctic region biological oxygen demand river catchment seasonal contribution terrestrial organic matter winter temperature Organisms (Organisms) - Organisms [00500] organism common dissolved organic carbon DOC 07504 Ecology: environmental biology - Bioclimatology and biometeorology 07512 Ecology: environmental biology - Oceanography 07514 Ecology: environmental biology - Limnology 10060 Biochemistry studies - General Ecology Environmental Sciences Climatology Freshwater Ecology Marine Ecology GEOSCIENCES MOLECULAR-WEIGHT CLIMATE-CHANGE CARBON BUDGET FOOD-WEB ABSORPTION DEPOSITION ESTUARIES ACIDITY TRENDS WATERS /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
To examine the potential influence of terrestrially derived DOM on the Baltic Sea, a year-long study of dissolved organic matter (DOM) was performed in three river catchments in Sweden. One catchment drains into the Bothnian Sea, while two southern catchments drain into the Baltic proper. Dissolved organic carbon (DOC) concentrations were positively correlated with discharge from forested catchments over the year. While the overall concentrations of DOC were several times higher in the southern two catchments, higher discharge in the northern catchment resulted in the annual loadings of DOC being on the same order of magnitude for all three catchments. Biological oxygen demand (BOD) was used as a proxy for the lability of carbon in the system. The range of BOD values was similar for all three catchments, however, the ratio of BOD to DOC (an indication of the labile fraction) in Ume river was four times higher than in the southern two catchments. Total annual BOD loading to the Baltic Sea was twice as high in the northern catchment than in the two southern catchments. Lower winter temperatures and preservation of organic matter in the northern catchment combined with an intense spring flood help to explain the higher concentrations of labile carbon in the northern catchment. Lower lability of DOM as well as higher colour in the southern catchments suggest that wetlands (i.e. peat bogs) may be the dominant source of DOM in these catchments, particularly in periods of low flow. With climate change expected to increase precipitation events and temperatures across the region, the supply and quality of DOM delivered to the Baltic Sea can also be expected to change. Our results indicate that DOM supply to the Baltic Sea from boreal rivers will be more stable throughout the year, and potentially have a lower bioavailability. |
format |
Article in Journal/Newspaper |
author |
Reader, H. E. Stedmon, C. A. Kritzberg, E. S. |
author_facet |
Reader, H. E. Stedmon, C. A. Kritzberg, E. S. |
author_sort |
Reader, H. E. |
title |
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
title_short |
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
title_full |
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
title_fullStr |
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
title_full_unstemmed |
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments |
title_sort |
seasonal contribution of terrestrial organic matter and biological oxygen demand to the baltic sea from three contrasting river catchments |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/659bd8e7-49ca-4560-bddd-ecacaeea2cea https://doi.org/10.5194/bg-11-3409-2014 https://backend.orbit.dtu.dk/ws/files/98468530/Publishers_version.pdf |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_source |
Reader , H E , Stedmon , C A & Kritzberg , E S 2014 , ' Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments ' , Biogeosciences , vol. 11 , no. 12 , pp. 3409-3419 . https://doi.org/10.5194/bg-11-3409-2014 |
op_relation |
https://orbit.dtu.dk/en/publications/659bd8e7-49ca-4560-bddd-ecacaeea2cea |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-11-3409-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
12 |
container_start_page |
3409 |
op_container_end_page |
3419 |
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1790604835490365440 |