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Impacts of a severe storm on carbon accumulation in coarse woody debris within a secondary Atlantic Forest fragment in Brazil

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Abstract

The alarming increase in extreme weather events, such as severe storms with torrential rain and strong winds, is a direct result of climate change. These events have led to discernible shifts in forest structure and the carbon cycle, primarily driven by a surge in tree mortality. However, the impacts caused by these severe storms on the production and carbon increment from coarse woody debris (CWD) are still poorly understood, especially in the Brazilian Atlantic Forest. Thus, the goal proposed by the study was to quantify the CWD volume, necromass, and carbon stock before and after the occurrence of a severe storm and to determine the importance of spatial, structural, and qualitative variables of trees in the CWD carbon increment. The increase in carbon by the storm was 2.01 MgC ha−1, with a higher concentration in the CWD less decomposed and smaller diameter class. The forest fragment plots showed distinct increments (0.05–0.35 MgC), being influenced by spatial (elevation, declivity, and slope angle) structural (basal area) and qualitative factors (trunk quality and tree health), intrinsic to the forest. Thus, it is concluded that severe storms cause a large increase in carbon in CWD, making it essential to understand the susceptibility of forests to the action of intense rains and strong winds to model and monitor the future impacts of these extreme weather events on Atlantic Forest and other tropical forests in the world.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This study received financial support from Minas Gerais Research Foundation (FAPEMIG: grant no. APQ-03088-18); Fundação Arthur Bernardes (FUNARBE: grant no. Funarpeq-4292); Coordination for the Improvement of Higher Education Personnel of Brazil (CAPES: grant no. 88887.319055/2019-00); and the National Council for Scientific and Technological Development (CNPq: grant no. 309128/2020-0 and grant no. 140467/2017-3).

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Paulo Henrique Villanova: investigation; writing—original draft; formal analysis. Carlos Moreira Miquelino Eleto Torres: supervision; project administration; funding acquisition; writing—review and editing. Laércio Antônio Gonçalves Jacovine: writing—review and editing; validation. Bruno Leão Said Schettini: writing—review and editing; formal analysis. Sabina Cerruto Ribeiro: writing—review and editing; validation. Samuel José Silva Soares da Rocha: writing—review and editing; formal analysis. Maria Paula Miranda Xavier Rufino: writing—review and editing; formal analysis. Mariany Filipini de Freitas: writing—review and editing. Lucas Abreu Kerkoff: writing—review and editing.

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Correspondence to Paulo Henrique Villanova.

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The authors declare no competing interests.

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The collection of plant material, experimental research, and field studies complied with relevant institutional, national, and international guidelines and legislation.

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Villanova, P.H., Torres, C.M.M.E., Jacovine, L.A.G. et al. Impacts of a severe storm on carbon accumulation in coarse woody debris within a secondary Atlantic Forest fragment in Brazil. Environ Monit Assess 196, 203 (2024). https://doi.org/10.1007/s10661-024-12316-8

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  • DOI: https://doi.org/10.1007/s10661-024-12316-8

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