A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia
Radiocarbon-dated peat cores collected from an ombrotrophic bog in southern Estonia record shifting environmental conditions and carbon accumulation rates in northern Europe during the late Holocene. Modern observations indicate that the water balance of the peatland is highly influenced by changes...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Quaternary |
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| Online Access: | https://www.mdpi.com/2571-550X/5/1/8 |
| _version_ | 1797442948983422976 |
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| author | Nathan D. Stansell Eric S. Klein Kristyn Hill Jaanus Terasmaa Justin Dodd Maxwell Boes Mariliis Eensalu Carolyn Fortney Annabella Fritts Roxana Garcia Brittany Price Brandy Swanson |
| author_facet | Nathan D. Stansell Eric S. Klein Kristyn Hill Jaanus Terasmaa Justin Dodd Maxwell Boes Mariliis Eensalu Carolyn Fortney Annabella Fritts Roxana Garcia Brittany Price Brandy Swanson |
| author_sort | Nathan D. Stansell |
| collection | DOAJ |
| description | Radiocarbon-dated peat cores collected from an ombrotrophic bog in southern Estonia record shifting environmental conditions and carbon accumulation rates in northern Europe during the late Holocene. Modern observations indicate that the water balance of the peatland is highly influenced by changes in relative humidity, followed by temperature and precipitation. The modern δ<sup>18</sup>O and δ<sup>2</sup>H values of surface water suggest that the groundwater is an integration of several months of precipitation. There also appears to be little or no direct influence of surface evaporation on the water within the bog, suggesting that water loss is preferentially through transpiration and sub-surface flow. Bulk peat δ<sup>13</sup>C values exhibit a trend of higher values through the late Holocene, suggesting a pattern of overall increased surface wetness. The δ<sup>15</sup>N values were low from ~4130 to 3645 cal yr BP, suggesting drier conditions, followed by intermediate values until ~2995 cal yr BP. The δ<sup>15</sup>N values decrease again from ~2995 to 2470 cal yr BP, suggesting a return to drier conditions, followed by intermediate values until ~955 cal yr BP. The δ<sup>15</sup>N values were high, suggesting wetter conditions from ~955 to 250 cal yr BP, followed by intermediate values through the modern. Carbon accumulation rates were low to intermediate from ~4200 to 2470 cal yr BP, followed by intermediate-to-high values until ~1645 cal yr BP. Carbon accumulation rates were then low until ~585 cal yr BP, followed by intermediate values through the modern. The geochemical data, combined with observed changes in peat composition and regional proxies of temperature and water table fluctuations through the late Holocene, suggest that carbon accumulation rates were relatively low under dry and warm conditions, whereas accumulation was generally higher (up to ~80 g C m<sup>−2</sup> yr<sup>−1</sup>) when the climate was wetter and/or colder. These findings further suggest that future environmental changes affecting the regional water balance and temperature will impact the potential for northern peatlands to capture and store carbon. |
| first_indexed | 2024-03-09T12:49:02Z |
| format | Article |
| id | doaj.art-7428257dd30a4745a3b35c25365789a0 |
| institution | Directory Open Access Journal |
| issn | 2571-550X |
| language | English |
| last_indexed | 2024-03-09T12:49:02Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Quaternary |
| spelling | doaj.art-7428257dd30a4745a3b35c25365789a02023-11-30T22:08:47ZengMDPI AGQuaternary2571-550X2022-02-0151810.3390/quat5010008A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern EstoniaNathan D. Stansell0Eric S. Klein1Kristyn Hill2Jaanus Terasmaa3Justin Dodd4Maxwell Boes5Mariliis Eensalu6Carolyn Fortney7Annabella Fritts8Roxana Garcia9Brittany Price10Brandy Swanson11Department of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USADepartment of Geological Sciences, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, AK 99508, USADepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USAInstitute of Ecology, Tallinn University, Uus-Sadama 5, 10120 Tallinn, EstoniaDepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USADepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USADepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USADepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USADepartment of Earth and Environmental Sciences, University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI 48109, USAWaubonsee Community College, Sugar Grove, IL 60554, USADepartment of Geology and Environmental Geosciences, Northern Illinois University, 312 Davis Hall, Normal Road, DeKalb, IL 60115, USAHuntley High School, Huntley, IL 60142, USARadiocarbon-dated peat cores collected from an ombrotrophic bog in southern Estonia record shifting environmental conditions and carbon accumulation rates in northern Europe during the late Holocene. Modern observations indicate that the water balance of the peatland is highly influenced by changes in relative humidity, followed by temperature and precipitation. The modern δ<sup>18</sup>O and δ<sup>2</sup>H values of surface water suggest that the groundwater is an integration of several months of precipitation. There also appears to be little or no direct influence of surface evaporation on the water within the bog, suggesting that water loss is preferentially through transpiration and sub-surface flow. Bulk peat δ<sup>13</sup>C values exhibit a trend of higher values through the late Holocene, suggesting a pattern of overall increased surface wetness. The δ<sup>15</sup>N values were low from ~4130 to 3645 cal yr BP, suggesting drier conditions, followed by intermediate values until ~2995 cal yr BP. The δ<sup>15</sup>N values decrease again from ~2995 to 2470 cal yr BP, suggesting a return to drier conditions, followed by intermediate values until ~955 cal yr BP. The δ<sup>15</sup>N values were high, suggesting wetter conditions from ~955 to 250 cal yr BP, followed by intermediate values through the modern. Carbon accumulation rates were low to intermediate from ~4200 to 2470 cal yr BP, followed by intermediate-to-high values until ~1645 cal yr BP. Carbon accumulation rates were then low until ~585 cal yr BP, followed by intermediate values through the modern. The geochemical data, combined with observed changes in peat composition and regional proxies of temperature and water table fluctuations through the late Holocene, suggest that carbon accumulation rates were relatively low under dry and warm conditions, whereas accumulation was generally higher (up to ~80 g C m<sup>−2</sup> yr<sup>−1</sup>) when the climate was wetter and/or colder. These findings further suggest that future environmental changes affecting the regional water balance and temperature will impact the potential for northern peatlands to capture and store carbon.https://www.mdpi.com/2571-550X/5/1/8northern EuropeBaltic regioncarbon and nitrogen isotopesC:Ncarbon dynamicswater isotopes |
| spellingShingle | Nathan D. Stansell Eric S. Klein Kristyn Hill Jaanus Terasmaa Justin Dodd Maxwell Boes Mariliis Eensalu Carolyn Fortney Annabella Fritts Roxana Garcia Brittany Price Brandy Swanson A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia Quaternary northern Europe Baltic region carbon and nitrogen isotopes C:N carbon dynamics water isotopes |
| title | A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia |
| title_full | A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia |
| title_fullStr | A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia |
| title_full_unstemmed | A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia |
| title_short | A Late Holocene Stable Isotope and Carbon Accumulation Record from Teringi Bog in Southern Estonia |
| title_sort | late holocene stable isotope and carbon accumulation record from teringi bog in southern estonia |
| topic | northern Europe Baltic region carbon and nitrogen isotopes C:N carbon dynamics water isotopes |
| url | https://www.mdpi.com/2571-550X/5/1/8 |
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