Downed woody debris carbon emissions in a European temperate virgin forest as driven by species, decay classes, diameter and microclimate
Consultable a partir de
2026-02-20
Fecha
2024Autor
Versión
Acceso embargado / Sarbidea bahitua dago
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
Impacto
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10.1016/j.scitotenv.2023.169133
Resumen
Downed woody debris (DWD) plays an important role as regulator of nutrient and carbon (C) cycling in forests, accounting for up to the 20 % of the total C stocks in primary forests. DWD persistence is highly influenced by microbial decomposition, which is determined by various environmental factors, including fluctuations in temperature and moisture, as well as in intrinsic DWD properties determi ...
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Downed woody debris (DWD) plays an important role as regulator of nutrient and carbon (C) cycling in forests, accounting for up to the 20 % of the total C stocks in primary forests. DWD persistence is highly influenced by microbial decomposition, which is determined by various environmental factors, including fluctuations in temperature and moisture, as well as in intrinsic DWD properties determined by species, diameter, or decay classes (DCs). The relative importance of these different drivers, as well as their interactions, remains largely unknown. Moreover, the importance of DWD for C cycling in virgin forests remains poorly understood, due to their scarcity and poor accessibility. To address this research gap, we conducted a study on DWD respiration (RDWD), in a temperate virgin forest dominated by European beech and silver fir. Our investigation analysed the correlation between RDWD of these two dominant tree species and the seasonal changes in climate (temperature and moisture), considering other intrinsic DWD traits such as DCs (1, 2 and 4) and diameters (1, 10 and 25 cm). As anticipated, RDWD (normalized per gram of dry DWD) increased with air temperature. Surprisingly, DWD diameter also had a strong positive correlation with R DWD. Nonetheless, the sensitivity to both variables and other intrinsic traits (DC and density) was greatly modulated by the species. On the contrary, water content, which exhibited a considerable spatial variation, had an overall negative effect on R DWD. Virgin forests are generally seen as ineffective C sinks due to their lack of net productivity and high respiration and nutrient turnover. However, the rates of R DWD in this virgin forest were significantly lower than those previously estimated for managed forests. This suggests that DWD in virgin forests may be bufferingforest CO2 emissions to the atmosphere more than previously thought. [--]
Materias
Downed woody debris,
Temperate virgin forest,
Decay class,
Downed woody debris diameter,
CO2 emissions,
Downed woody debris respiration,
Species-specific downed woody debris traits
Editor
Elsevier
Publicado en
Science of the Total Environment 912, (2024), 169133
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Multidisciplinary Research in Applied Biology - IMAB
Versión del editor
Entidades Financiadoras
This study was funded by Romanian Ministry of Education and Research grant CNCS-UEFISCDI, project number PN-III-P4-ID-PCE-2020-2696, within PNCDI III. Curiel Yuste J was funded by the coordinated project ATLANTIS (PID2020-113244GB-C21) funded by MCIN/AEI/10.13039/501100011033. This research was also supported by HoliSoils (H2020-SFS-2020-2) H2020 EU funded project, the Basque Government through the BERC 2022-2025 program, and the Spanish Ministry of Science and Innovation through the BC3 María de Maeztu excellence accreditation (MDM-2017-0714). J.B. is recipient of “Requalification of the Spanish University System for 2021–2023, Public University of Navarra” fellowship, funded by the European Union-NextgenerationEU. Petritan AM was supported by Ministry of Research, Innovation and Digitization through FORCLIMSOC program, project number PN23090301.
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La licencia del ítem se describe como © 2023 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.
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