Microbial community dynamics in two Central European peatlands affected by different nitrogen depositions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F25%3A10169716" target="_blank" >RIV/00025798:_____/25:10169716 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43911135

Výsledek na webu

<a href="https://doi.org/10.1093/femsec/fiaf056" target="_blank" >https://doi.org/10.1093/femsec/fiaf056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/femsec/fiaf056" target="_blank" >10.1093/femsec/fiaf056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microbial community dynamics in two Central European peatlands affected by different nitrogen depositions

Popis výsledku v původním jazyce

Changes in organic matter accumulation in wetlands are critical for climate dynamics. Different nitrogen (N) inputs in Sphagnum-dominated peat bogs can lead to varying rates of carbon (C) and N accumulation, influencing greenhouse gas emissions. We investigated how contrasting N deposition shapes microbial communities in two Czech peat bogs, focusing on biological N2 fixation (BNF) as a key N input in pristine wetlands. Higher N deposition resulted in a more active microbial community with increased enzyme activity and C acquisition, potentially accelerating decomposition and reducing C storage. Enhanced denitrification, indicated by active nosZ Clade I genes, suggests that higher N inputs may increase N losses through denitrification. In contrast, the lower N site showed a less active microbial community with slower decomposition, beneficial for C sequestration, though potentially less adaptable to future N increases. Experimental BNF rates were 70 times higher at the high N site, consistent with elevated diazotroph activity indicated by active nifH gene. Phosphorus (P) availability and NH4+/NO3- ratios appeared to drive BNF differences, emphasizing the need for managed N inputs to maintain peatland ecological functions. This study reveals how nitrogen inputs shape peatland microbial dynamics and carbon cycling, showing that increased N deposition fuels microbial activity and nitrogen fixation, potentially tipping peatlands from carbon stores to greenhouse gas sources.

Název v anglickém jazyce

Microbial community dynamics in two Central European peatlands affected by different nitrogen depositions

Popis výsledku anglicky

Changes in organic matter accumulation in wetlands are critical for climate dynamics. Different nitrogen (N) inputs in Sphagnum-dominated peat bogs can lead to varying rates of carbon (C) and N accumulation, influencing greenhouse gas emissions. We investigated how contrasting N deposition shapes microbial communities in two Czech peat bogs, focusing on biological N2 fixation (BNF) as a key N input in pristine wetlands. Higher N deposition resulted in a more active microbial community with increased enzyme activity and C acquisition, potentially accelerating decomposition and reducing C storage. Enhanced denitrification, indicated by active nosZ Clade I genes, suggests that higher N inputs may increase N losses through denitrification. In contrast, the lower N site showed a less active microbial community with slower decomposition, beneficial for C sequestration, though potentially less adaptable to future N increases. Experimental BNF rates were 70 times higher at the high N site, consistent with elevated diazotroph activity indicated by active nifH gene. Phosphorus (P) availability and NH4+/NO3- ratios appeared to drive BNF differences, emphasizing the need for managed N inputs to maintain peatland ecological functions. This study reveals how nitrogen inputs shape peatland microbial dynamics and carbon cycling, showing that increased N deposition fuels microbial activity and nitrogen fixation, potentially tipping peatlands from carbon stores to greenhouse gas sources.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GA24-12596S" target="_blank" >GA24-12596S: Fixace dusíku ve znečištěných vrchovištích ČR: Jak smířit vysokou akumulaci N podle aktivit 210Pb s nízkou asimilací 15N2 a nízkou dostupností fosforu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

FEMS Microbiology Ecology

ISSN

0168-6496

e-ISSN

1574-6941

Svazek periodika

101

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

nestránkováno

Kód UT WoS článku

001516678200001

EID výsledku v databázi Scopus

2-s2.0-105009376407