Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA
Abstract Connecting changes in erosion and vegetation is necessary for predicting topographic and ecologic change in thawing permafrost landscapes. Formerly periglacial landscapes serve as potential analogs for understanding modern permafrost landscape change, yet compared to paleoenvironmental reco...
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crcambridgeupr:10.1017/qua.2023.60 2024-03-03T08:47:54+00:00 Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA Del Vecchio, Joanmarie Ivory, Sarah J. Mount, Gregory J. Leddy, Matthew DiBiase, Roman A. 2024 http://dx.doi.org/10.1017/qua.2023.60 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589423000601 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Quaternary Research volume 117, page 79-97 ISSN 0033-5894 1096-0287 General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) journal-article 2024 crcambridgeupr https://doi.org/10.1017/qua.2023.60 2024-02-08T08:43:46Z Abstract Connecting changes in erosion and vegetation is necessary for predicting topographic and ecologic change in thawing permafrost landscapes. Formerly periglacial landscapes serve as potential analogs for understanding modern permafrost landscape change, yet compared to paleoenvironmental records at these sites, less is known about concurrent geomorphic processes, particularly their rates and relationships to climate change. Here, we target sediments preserved in a central Appalachian peat bog to reconstruct sedimentation across the last deglacial warming. We use ground-penetrating radar and geochemistry of cored bog sediments to quantify sedimentation timing, style, and provenance. Using 14 C dating of sedimentary and geochemical shifts, we connect depositional changes to global climate and local vegetation change. We show that deglacial warming promoted deep soil disturbances via solifluction at ca. 14 ka. In contrast, relatively wetter conditions from ca. 10–9 ka promoted shallow disturbance of hillslopes via slopewash, which corresponds to a time of vegetation change. Our results highlight climate-modulated erosion depth and processes in periglacial and post-periglacial landscapes. The existence of similar erosion and vegetation records preserved regionally implies these dynamics were pervasive across unglaciated Appalachian highlands, aiding in reconstructing erosion responses to warming at a resolution with implications for predicting high-latitude landscape responses to disturbance. Article in Journal/Newspaper permafrost Cambridge University Press Quaternary Research 117 79 97 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) |
spellingShingle |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) Del Vecchio, Joanmarie Ivory, Sarah J. Mount, Gregory J. Leddy, Matthew DiBiase, Roman A. Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
topic_facet |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) |
description |
Abstract Connecting changes in erosion and vegetation is necessary for predicting topographic and ecologic change in thawing permafrost landscapes. Formerly periglacial landscapes serve as potential analogs for understanding modern permafrost landscape change, yet compared to paleoenvironmental records at these sites, less is known about concurrent geomorphic processes, particularly their rates and relationships to climate change. Here, we target sediments preserved in a central Appalachian peat bog to reconstruct sedimentation across the last deglacial warming. We use ground-penetrating radar and geochemistry of cored bog sediments to quantify sedimentation timing, style, and provenance. Using 14 C dating of sedimentary and geochemical shifts, we connect depositional changes to global climate and local vegetation change. We show that deglacial warming promoted deep soil disturbances via solifluction at ca. 14 ka. In contrast, relatively wetter conditions from ca. 10–9 ka promoted shallow disturbance of hillslopes via slopewash, which corresponds to a time of vegetation change. Our results highlight climate-modulated erosion depth and processes in periglacial and post-periglacial landscapes. The existence of similar erosion and vegetation records preserved regionally implies these dynamics were pervasive across unglaciated Appalachian highlands, aiding in reconstructing erosion responses to warming at a resolution with implications for predicting high-latitude landscape responses to disturbance. |
format |
Article in Journal/Newspaper |
author |
Del Vecchio, Joanmarie Ivory, Sarah J. Mount, Gregory J. Leddy, Matthew DiBiase, Roman A. |
author_facet |
Del Vecchio, Joanmarie Ivory, Sarah J. Mount, Gregory J. Leddy, Matthew DiBiase, Roman A. |
author_sort |
Del Vecchio, Joanmarie |
title |
Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
title_short |
Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
title_full |
Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
title_fullStr |
Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
title_full_unstemmed |
Hillslope and vegetation response to postglacial warming at Bear Meadows Bog, Pennsylvania, USA |
title_sort |
hillslope and vegetation response to postglacial warming at bear meadows bog, pennsylvania, usa |
publisher |
Cambridge University Press (CUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1017/qua.2023.60 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589423000601 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Quaternary Research volume 117, page 79-97 ISSN 0033-5894 1096-0287 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/qua.2023.60 |
container_title |
Quaternary Research |
container_volume |
117 |
container_start_page |
79 |
op_container_end_page |
97 |
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1792504190258380800 |