Insights into the tussock growth form with model–data fusion
Summary Some rhizomatous grass and sedge species form tussocks that impact ecosystem structure and function. Despite their importance, tussock development and size controls are poorly understood due to the decadal to centennial timescales over which tussocks form. We explored mechanisms regulating t...
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Online Access: | http://dx.doi.org/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.18751 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 |
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crwiley:10.1111/nph.18751 2024-04-28T08:09:01+00:00 Insights into the tussock growth form with model–data fusion Curasi, Salvatore R. Fetcher, Ned Wright, Kelseyann S. Weldon, Daniel P. Rocha, Adrian V. Division of Environmental Biology Division of Graduate Education Division of Polar Programs Institute of International Education National Geographic Society University of Notre Dame 2023 http://dx.doi.org/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.18751 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 en eng Wiley http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ New Phytologist volume 239, issue 2, page 562-575 ISSN 0028-646X 1469-8137 Plant Science Physiology journal-article 2023 crwiley https://doi.org/10.1111/nph.18751 2024-04-08T06:53:18Z Summary Some rhizomatous grass and sedge species form tussocks that impact ecosystem structure and function. Despite their importance, tussock development and size controls are poorly understood due to the decadal to centennial timescales over which tussocks form. We explored mechanisms regulating tussock development and size in a ubiquitous arctic tussock sedge ( Eriophorum vaginatum ) using field observations and a mass balance model coupled with a tiller population model. Model–data fusion was used to quantify parameter and prediction uncertainty, determine model sensitivity, and test hypotheses on the factors regulating tussock size. The model accurately captured the dynamics of tussock development, characteristics, and size observed in the field. Tussock growth approached maximal size within several decades, which was determined by feedbacks between the mass balance of tussock root necromass and density‐dependent tillering. The model also predicted that maximal tussock size was primarily regulated by tiller root productivity and necromass bulk density and less so by tiller demography. These predictions were corroborated by field observations of tussock biomass and root characteristics. The study highlights the importance of belowground processes in regulating tussock development and size and enhances our understanding of the influence of tussocks on arctic ecosystem structure and function. Article in Journal/Newspaper Arctic Eriophorum Wiley Online Library New Phytologist 239 2 562 575 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Plant Science Physiology |
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Plant Science Physiology Curasi, Salvatore R. Fetcher, Ned Wright, Kelseyann S. Weldon, Daniel P. Rocha, Adrian V. Insights into the tussock growth form with model–data fusion |
topic_facet |
Plant Science Physiology |
description |
Summary Some rhizomatous grass and sedge species form tussocks that impact ecosystem structure and function. Despite their importance, tussock development and size controls are poorly understood due to the decadal to centennial timescales over which tussocks form. We explored mechanisms regulating tussock development and size in a ubiquitous arctic tussock sedge ( Eriophorum vaginatum ) using field observations and a mass balance model coupled with a tiller population model. Model–data fusion was used to quantify parameter and prediction uncertainty, determine model sensitivity, and test hypotheses on the factors regulating tussock size. The model accurately captured the dynamics of tussock development, characteristics, and size observed in the field. Tussock growth approached maximal size within several decades, which was determined by feedbacks between the mass balance of tussock root necromass and density‐dependent tillering. The model also predicted that maximal tussock size was primarily regulated by tiller root productivity and necromass bulk density and less so by tiller demography. These predictions were corroborated by field observations of tussock biomass and root characteristics. The study highlights the importance of belowground processes in regulating tussock development and size and enhances our understanding of the influence of tussocks on arctic ecosystem structure and function. |
author2 |
Division of Environmental Biology Division of Graduate Education Division of Polar Programs Institute of International Education National Geographic Society University of Notre Dame |
format |
Article in Journal/Newspaper |
author |
Curasi, Salvatore R. Fetcher, Ned Wright, Kelseyann S. Weldon, Daniel P. Rocha, Adrian V. |
author_facet |
Curasi, Salvatore R. Fetcher, Ned Wright, Kelseyann S. Weldon, Daniel P. Rocha, Adrian V. |
author_sort |
Curasi, Salvatore R. |
title |
Insights into the tussock growth form with model–data fusion |
title_short |
Insights into the tussock growth form with model–data fusion |
title_full |
Insights into the tussock growth form with model–data fusion |
title_fullStr |
Insights into the tussock growth form with model–data fusion |
title_full_unstemmed |
Insights into the tussock growth form with model–data fusion |
title_sort |
insights into the tussock growth form with model–data fusion |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.18751 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18751 |
genre |
Arctic Eriophorum |
genre_facet |
Arctic Eriophorum |
op_source |
New Phytologist volume 239, issue 2, page 562-575 ISSN 0028-646X 1469-8137 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/nph.18751 |
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New Phytologist |
container_volume |
239 |
container_issue |
2 |
container_start_page |
562 |
op_container_end_page |
575 |
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1797577520968630272 |