Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years
Introduction: Rising industrial emissions of carbon dioxide and methane highlight the important role of carbon sinks and sources in fast-changing northern landscapes. Northern lake systems play a key role in regulating organic carbon input by accumulating carbon in their sediment. Here we look at th...
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ftdoajarticles:oai:doaj.org/article:52fc56c71a62411d8204e7419564d7e4 2023-10-01T03:54:18+02:00 Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years Gregor Pfalz Bernhard Diekmann Johann-Christoph Freytag Boris K. Biskaborn 2023-08-01T00:00:00Z https://doi.org/10.3389/feart.2023.1233713 https://doaj.org/article/52fc56c71a62411d8204e7419564d7e4 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2023.1233713/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2023.1233713 https://doaj.org/article/52fc56c71a62411d8204e7419564d7e4 Frontiers in Earth Science, Vol 11 (2023) Arctic multi-proxy analysis organic carbon accumulation rate (OCAR) sediment cores TraCE-21k Science Q article 2023 ftdoajarticles https://doi.org/10.3389/feart.2023.1233713 2023-09-03T00:52:02Z Introduction: Rising industrial emissions of carbon dioxide and methane highlight the important role of carbon sinks and sources in fast-changing northern landscapes. Northern lake systems play a key role in regulating organic carbon input by accumulating carbon in their sediment. Here we look at the lake history of 28 lakes (between 50°N and 80°N) over the past 21,000 years to explore the relationship between carbon accumulation in lakes and temperature changes.Method: For this study, we calculated organic carbon accumulation rates (OCAR) using measured and newly generated organic carbon and dry bulk density data. To estimate new data, we used and evaluated seven different regression techniques in addition to a log-linear model as our base model. We also used combined age-depth modeling to derive sedimentation rates and the TraCE-21ka climate reanalysis dataset to understand temperature development since the Last Glacial Maximum. We determined correlation between temperature and OCAR by using four different correlation coefficients.Results: In our data collection, we found a slightly positive association between OCAR and temperature. OCAR values peaked during warm periods Bølling Allerød (38.07 g·m−2·yr−1) and the Early Holocene (40.68 g·m−2·yr−1), while lowest values occurred during the cold phases of Last Glacial Maximum (9.47 g·m−2·yr−1) and Last Deglaciation (10.53 g·m−2·yr−1). However, high temperatures did not directly lead to high OCAR values.Discussion: We assume that rapid warming events lead to high carbon accumulation in lakes, but as warming progresses, this effect appears to change as increased microbial activity triggers greater outgassing. Despite the complexity of environmental forcing mechanisms affecting individual lake systems, our study showed statistical significance between measured OCAR and modelled paleotemperature for 11 out of 28 lakes. We concluded that air temperature alone appears to drive the carbon accumulation in lakes. We expected that other factors (catchment vegetation, ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Frontiers in Earth Science 11 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic multi-proxy analysis organic carbon accumulation rate (OCAR) sediment cores TraCE-21k Science Q |
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Arctic multi-proxy analysis organic carbon accumulation rate (OCAR) sediment cores TraCE-21k Science Q Gregor Pfalz Bernhard Diekmann Johann-Christoph Freytag Boris K. Biskaborn Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
topic_facet |
Arctic multi-proxy analysis organic carbon accumulation rate (OCAR) sediment cores TraCE-21k Science Q |
description |
Introduction: Rising industrial emissions of carbon dioxide and methane highlight the important role of carbon sinks and sources in fast-changing northern landscapes. Northern lake systems play a key role in regulating organic carbon input by accumulating carbon in their sediment. Here we look at the lake history of 28 lakes (between 50°N and 80°N) over the past 21,000 years to explore the relationship between carbon accumulation in lakes and temperature changes.Method: For this study, we calculated organic carbon accumulation rates (OCAR) using measured and newly generated organic carbon and dry bulk density data. To estimate new data, we used and evaluated seven different regression techniques in addition to a log-linear model as our base model. We also used combined age-depth modeling to derive sedimentation rates and the TraCE-21ka climate reanalysis dataset to understand temperature development since the Last Glacial Maximum. We determined correlation between temperature and OCAR by using four different correlation coefficients.Results: In our data collection, we found a slightly positive association between OCAR and temperature. OCAR values peaked during warm periods Bølling Allerød (38.07 g·m−2·yr−1) and the Early Holocene (40.68 g·m−2·yr−1), while lowest values occurred during the cold phases of Last Glacial Maximum (9.47 g·m−2·yr−1) and Last Deglaciation (10.53 g·m−2·yr−1). However, high temperatures did not directly lead to high OCAR values.Discussion: We assume that rapid warming events lead to high carbon accumulation in lakes, but as warming progresses, this effect appears to change as increased microbial activity triggers greater outgassing. Despite the complexity of environmental forcing mechanisms affecting individual lake systems, our study showed statistical significance between measured OCAR and modelled paleotemperature for 11 out of 28 lakes. We concluded that air temperature alone appears to drive the carbon accumulation in lakes. We expected that other factors (catchment vegetation, ... |
format |
Article in Journal/Newspaper |
author |
Gregor Pfalz Bernhard Diekmann Johann-Christoph Freytag Boris K. Biskaborn |
author_facet |
Gregor Pfalz Bernhard Diekmann Johann-Christoph Freytag Boris K. Biskaborn |
author_sort |
Gregor Pfalz |
title |
Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
title_short |
Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
title_full |
Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
title_fullStr |
Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
title_full_unstemmed |
Effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
title_sort |
effect of temperature on carbon accumulation in northern lake systems over the past 21,000 years |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/feart.2023.1233713 https://doaj.org/article/52fc56c71a62411d8204e7419564d7e4 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Frontiers in Earth Science, Vol 11 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2023.1233713/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2023.1233713 https://doaj.org/article/52fc56c71a62411d8204e7419564d7e4 |
op_doi |
https://doi.org/10.3389/feart.2023.1233713 |
container_title |
Frontiers in Earth Science |
container_volume |
11 |
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1778521778509840384 |