Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment

Soil respiration plays a central role in global carbon dynamics, and small changes in the magnitude of soil respiration could have large impacts on atmospheric CO2 concentrations. Heterotrophic soil respiration mainly comes from microbial mineralization of soil organic matter and decomposition of pl...

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Autores principales:	Mengyun Liu, Simone Cesarz, Nico Eisenhauer, Hanping Xia, Shenglei Fu, Dylan Craven
Formato:	article
Lenguaje:	EN
Publicado:	Senckenberg Gesellschaft für Naturforschung 2021
Materias:	Aboveground-belowground interactions carbon cycle decomposition leaf litter C dynamics leaf litter traits context-dependency Microbiology QR1-502 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/4361de92ba624adda4b36da45301ae6c
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spelling	oai:doaj.org-article:4361de92ba624adda4b36da45301ae6c2021-12-01T12:11:17ZSoil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment10.25674/so93iss3id1581864-64172509-9523https://doaj.org/article/4361de92ba624adda4b36da45301ae6c2021-12-01T00:00:00Zhttp://soil-organisms.org/index.php/SO/article/view/158https://doaj.org/toc/1864-6417https://doaj.org/toc/2509-9523Soil respiration plays a central role in global carbon dynamics, and small changes in the magnitude of soil respiration could have large impacts on atmospheric CO2 concentrations. Heterotrophic soil respiration mainly comes from microbial mineralization of soil organic matter and decomposition of plant litter, yet only a few studies have addressed the combined effects of interactions among leaf litter quality, soil quality, and microbial biomass on soil respiration. We conducted a microcosm experiment using three soils from three forest sites representing a gradient in soil quality, comprised of soil pH and C:N ratio, and six tree litter types (from the same forests), encompassing a gradient in leaf nutrient and lignin concentrations. We followed soil CO2 emissions, soil basal respiration (measured as O2-consumption), and microbial biomass over twelve weeks to examine variation in response to leaf litter and soil quality and their interactions. Our results show that soil CO2 emissions increased significantly with soil quality and leaf litter quality respectively, and these effects were mediated by interactions with soil microbial biomass. Moreover, we found idiosyncratic interactive effects of leaf litter quality and microbial biomass on soil CO2 emissions across the gradient in soil quality. The sensitivity of soil respiration to soil quality and the interactions between leaf litter quality and soil microbial biomass suggests that global change drivers altering forest composition and soil community composition may have significant cascading effects on the soil carbon cycle. Mengyun LiuSimone CesarzNico EisenhauerHanping XiaShenglei FuDylan CravenSenckenberg Gesellschaft für NaturforschungarticleAboveground-belowground interactionscarbon cycledecompositionleaf litter C dynamicsleaf litter traitscontext-dependencyMicrobiologyQR1-502ZoologyQL1-991ENSoil Organisms, Vol 93, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aboveground-belowground interactions carbon cycle decomposition leaf litter C dynamics leaf litter traits context-dependency Microbiology QR1-502 Zoology QL1-991
spellingShingle	Aboveground-belowground interactions carbon cycle decomposition leaf litter C dynamics leaf litter traits context-dependency Microbiology QR1-502 Zoology QL1-991 Mengyun Liu Simone Cesarz Nico Eisenhauer Hanping Xia Shenglei Fu Dylan Craven Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
description	Soil respiration plays a central role in global carbon dynamics, and small changes in the magnitude of soil respiration could have large impacts on atmospheric CO2 concentrations. Heterotrophic soil respiration mainly comes from microbial mineralization of soil organic matter and decomposition of plant litter, yet only a few studies have addressed the combined effects of interactions among leaf litter quality, soil quality, and microbial biomass on soil respiration. We conducted a microcosm experiment using three soils from three forest sites representing a gradient in soil quality, comprised of soil pH and C:N ratio, and six tree litter types (from the same forests), encompassing a gradient in leaf nutrient and lignin concentrations. We followed soil CO2 emissions, soil basal respiration (measured as O2-consumption), and microbial biomass over twelve weeks to examine variation in response to leaf litter and soil quality and their interactions. Our results show that soil CO2 emissions increased significantly with soil quality and leaf litter quality respectively, and these effects were mediated by interactions with soil microbial biomass. Moreover, we found idiosyncratic interactive effects of leaf litter quality and microbial biomass on soil CO2 emissions across the gradient in soil quality. The sensitivity of soil respiration to soil quality and the interactions between leaf litter quality and soil microbial biomass suggests that global change drivers altering forest composition and soil community composition may have significant cascading effects on the soil carbon cycle.
format	article
author	Mengyun Liu Simone Cesarz Nico Eisenhauer Hanping Xia Shenglei Fu Dylan Craven
author_facet	Mengyun Liu Simone Cesarz Nico Eisenhauer Hanping Xia Shenglei Fu Dylan Craven
author_sort	Mengyun Liu
title	Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
title_short	Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
title_full	Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
title_fullStr	Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
title_full_unstemmed	Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
title_sort	soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment
publisher	Senckenberg Gesellschaft für Naturforschung
publishDate	2021
url	https://doaj.org/article/4361de92ba624adda4b36da45301ae6c
work_keys_str_mv	AT mengyunliu soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment AT simonecesarz soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment AT nicoeisenhauer soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment AT hanpingxia soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment AT shengleifu soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment AT dylancraven soilqualityleaflitterqualityandmicrobialbiomassinteractivelydrivesoilrespirationinamicrocosmexperiment
_version_	1718405229130547200

Soil quality, leaf litter quality, and microbial biomass interactively drive soil respiration in a microcosm experiment

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