Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada

Kirsi Keskitalo; Niek Speetjens; Paul Overduin; Sebastian Westermann; Frederieke Miesner; Torsten Sachs; Ingmar Nitze; Lisa Bröder; Negar Haghipour; Timothy Eglinton; Jorien Vonk

doi:10.5194/egusphere-egu22-9657

Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada

Kirsi Keskitalo, Niek Speetjens, Paul Overduin, Sebastian Westermann, Frederieke Miesner, Torsten Sachs, Ingmar Nitze, Lisa Bröder, Negar Haghipour, Timothy Eglinton, Jorien Vonk

Research output: Contribution to conference › Abstract

Abstract

Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between

Original language	English
Pages	EGU22-9657
Number of pages	1
DOIs	https://doi.org/10.5194/egusphere-egu22-9657
Publication status	Published - 25 Mar 2022
Externally published	Yes
Event	European Geosciences Union (EGU) General Assembly 2022 - Austria Center Vienna, Bruno-Kreisky-Platz 1, 1220, Vienna, Austria Duration: 23 May 2022 → 27 May 2022 https://egu22.eu/about/general_information.html

Conference

Conference	European Geosciences Union (EGU) General Assembly 2022
Abbreviated title	EGU22
Country/Territory	Austria
City	Vienna
Period	23/05/22 → 27/05/22
Internet address	https://egu22.eu/about/general_information.html

Access to Document

10.5194/egusphere-egu22-9657Licence: CC BY

https://egu22.eu/about/deadlines_and_milestones.html

Cite this

Keskitalo, K., Speetjens, N., Overduin, P., Westermann, S., Miesner, F., Sachs, T., Nitze, I., Bröder, L., Haghipour, N., Eglinton, T., & Vonk, J. (2022). Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada. EGU22-9657. Abstract from European Geosciences Union (EGU) General Assembly 2022, Vienna, Austria. https://doi.org/10.5194/egusphere-egu22-9657

@conference{aad91883a87c4194a4dd98cacef2966b,

title = "Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada",

abstract = "Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between ",

author = "Kirsi Keskitalo and Niek Speetjens and Paul Overduin and Sebastian Westermann and Frederieke Miesner and Torsten Sachs and Ingmar Nitze and Lisa Br{\"o}der and Negar Haghipour and Timothy Eglinton and Jorien Vonk",

year = "2022",

month = mar,

day = "25",

doi = "10.5194/egusphere-egu22-9657",

language = "English",

pages = "EGU22--9657",

note = "European Geosciences Union (EGU) General Assembly 2022, EGU22 ; Conference date: 23-05-2022 Through 27-05-2022",

url = "https://egu22.eu/about/general_information.html",

}

Keskitalo, K, Speetjens, N, Overduin, P, Westermann, S, Miesner, F, Sachs, T, Nitze, I, Bröder, L, Haghipour, N, Eglinton, T & Vonk, J 2022, 'Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada', European Geosciences Union (EGU) General Assembly 2022, Vienna, Austria, 23/05/22 - 27/05/22 pp. EGU22-9657. https://doi.org/10.5194/egusphere-egu22-9657

TY - CONF

T1 - Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada

AU - Keskitalo, Kirsi

AU - Speetjens, Niek

AU - Overduin, Paul

AU - Westermann, Sebastian

AU - Miesner, Frederieke

AU - Sachs, Torsten

AU - Nitze, Ingmar

AU - Bröder, Lisa

AU - Haghipour, Negar

AU - Eglinton, Timothy

AU - Vonk, Jorien

PY - 2022/3/25

Y1 - 2022/3/25

N2 - Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between

AB - Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between

U2 - 10.5194/egusphere-egu22-9657

DO - 10.5194/egusphere-egu22-9657

M3 - Abstract

SP - EGU22-9657

T2 - European Geosciences Union (EGU) General Assembly 2022

Y2 - 23 May 2022 through 27 May 2022

ER -