A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland

Abstract Ecosystem process models can be used to predict forest response to disturbances at a range of scales. Selection of the spatial class of model should depend on the scale of the research or management question, and model type should depend on the ecosystem attributes of interest. In some case...

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Autores principales:	Steven A. Flanagan, J. Kevin Hiers, Mac A. Callaham Jr., Scott Goodrick, Joseph J. O’Brien, Gregory Starr, Susanne Wiesner, Kier D. Klepzig, E. Louise Loudermilk
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	carbon sequestration ecosystem demography ecosystem modeling fire emission Ichauway Jones Center Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/506896cb15dd4173a47f88009b1f66f4
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spelling	oai:doaj.org-article:506896cb15dd4173a47f88009b1f66f42021-11-29T07:06:42ZA model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland2150-892510.1002/ecs2.3836https://doaj.org/article/506896cb15dd4173a47f88009b1f66f42021-11-01T00:00:00Zhttps://doi.org/10.1002/ecs2.3836https://doaj.org/toc/2150-8925Abstract Ecosystem process models can be used to predict forest response to disturbances at a range of scales. Selection of the spatial class of model should depend on the scale of the research or management question, and model type should depend on the ecosystem attributes of interest. In some cases, multiple classes of models could be used to address a single research question, with evaluations at each scale having potential benefits and drawbacks. This study examines two classes of models relative to how fire return intervals impact carbon and species dynamics in a southeastern U.S. pineland. A model that can be run as a global class model (ED) and a landscape class model (LANDIS‐II) were parameterized with species inventory data from an experimental Pinus Palustris (longleaf pine) forest in southwest Georgia, and simulations were calibrated with literature values, then validated with eddy‐covariance data from the study site. A variety of fire scenarios that included prescribed fire with a 2‐yr return interval, fire exclusion, and three wildfire scenarios (20‐, 50‐, and 100‐yr return intervals) were used for model runs. Results were compared and evaluated with regard to ecosystem carbon and species dynamics. Both models illustrated that prescribed fire provided the greatest carbon sequestration potential and most stable aboveground biomass through time when compared to the wildfire scenarios. The fire exclusion scenario for LANDIS‐II was the only scenario where prescribed fire did not provide the greatest carbon sequestration potential. However, fire exclusion on the order of centuries was a condition of this outcome and the occurrence of such long fire‐free periods is considered unrealistic in this fire‐prone landscape. Differences between models were primarily the result of the underlying characteristics of each model class, namely the spatial resolution and number of species included. In the end, two vastly different scale models supported the conclusion that high frequency prescribed fire in southeastern U.S. pinelands stabilizes carbon and maintains species composition in an ecosystem that is a known ecological hotspot.Steven A. FlanaganJ. Kevin HiersMac A. Callaham Jr.Scott GoodrickJoseph J. O’BrienGregory StarrSusanne WiesnerKier D. KlepzigE. Louise LoudermilkWileyarticlecarbon sequestrationecosystem demographyecosystem modelingfire emissionIchauwayJones CenterEcologyQH540-549.5ENEcosphere, Vol 12, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon sequestration ecosystem demography ecosystem modeling fire emission Ichauway Jones Center Ecology QH540-549.5
spellingShingle	carbon sequestration ecosystem demography ecosystem modeling fire emission Ichauway Jones Center Ecology QH540-549.5 Steven A. Flanagan J. Kevin Hiers Mac A. Callaham Jr. Scott Goodrick Joseph J. O’Brien Gregory Starr Susanne Wiesner Kier D. Klepzig E. Louise Loudermilk A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
description	Abstract Ecosystem process models can be used to predict forest response to disturbances at a range of scales. Selection of the spatial class of model should depend on the scale of the research or management question, and model type should depend on the ecosystem attributes of interest. In some cases, multiple classes of models could be used to address a single research question, with evaluations at each scale having potential benefits and drawbacks. This study examines two classes of models relative to how fire return intervals impact carbon and species dynamics in a southeastern U.S. pineland. A model that can be run as a global class model (ED) and a landscape class model (LANDIS‐II) were parameterized with species inventory data from an experimental Pinus Palustris (longleaf pine) forest in southwest Georgia, and simulations were calibrated with literature values, then validated with eddy‐covariance data from the study site. A variety of fire scenarios that included prescribed fire with a 2‐yr return interval, fire exclusion, and three wildfire scenarios (20‐, 50‐, and 100‐yr return intervals) were used for model runs. Results were compared and evaluated with regard to ecosystem carbon and species dynamics. Both models illustrated that prescribed fire provided the greatest carbon sequestration potential and most stable aboveground biomass through time when compared to the wildfire scenarios. The fire exclusion scenario for LANDIS‐II was the only scenario where prescribed fire did not provide the greatest carbon sequestration potential. However, fire exclusion on the order of centuries was a condition of this outcome and the occurrence of such long fire‐free periods is considered unrealistic in this fire‐prone landscape. Differences between models were primarily the result of the underlying characteristics of each model class, namely the spatial resolution and number of species included. In the end, two vastly different scale models supported the conclusion that high frequency prescribed fire in southeastern U.S. pinelands stabilizes carbon and maintains species composition in an ecosystem that is a known ecological hotspot.
format	article
author	Steven A. Flanagan J. Kevin Hiers Mac A. Callaham Jr. Scott Goodrick Joseph J. O’Brien Gregory Starr Susanne Wiesner Kier D. Klepzig E. Louise Loudermilk
author_facet	Steven A. Flanagan J. Kevin Hiers Mac A. Callaham Jr. Scott Goodrick Joseph J. O’Brien Gregory Starr Susanne Wiesner Kier D. Klepzig E. Louise Loudermilk
author_sort	Steven A. Flanagan
title	A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
title_short	A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
title_full	A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
title_fullStr	A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
title_full_unstemmed	A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland
title_sort	model comparison of fire return interval impacts on carbon and species dynamics in a southeastern u.s. pineland
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/506896cb15dd4173a47f88009b1f66f4
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A model comparison of fire return interval impacts on carbon and species dynamics in a southeastern U.S. pineland

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