Species effects and seasonal trends on plant efflux quantity and quality in a spruce swamp forest

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F18%3A43897388" target="_blank" >RIV/60076658:12310/18:43897388 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs11104-018-3610-0" target="_blank" >https://link.springer.com/article/10.1007%2Fs11104-018-3610-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11104-018-3610-0" target="_blank" >10.1007/s11104-018-3610-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Species effects and seasonal trends on plant efflux quantity and quality in a spruce swamp forest

Popis výsledku v původním jazyce

Aims We aimed to compare seasonal exudate quality and quantity between Sphagnum moss, Eriophorum vaginatum (graminoid) and Vaccinium myrtillus (ericoid shrub). Methods Exudates were collected in May, July and September 2014 using a culture-based method and characterized by total organic carbon (TOC) and nitrogen (TN) contents with exudation fluxes expressed on a root-mass basis. Organic acids, sugars and amino acids in the exudates were identified by ion exchange chromatography. C and N exudate fluxes, in situ exudation fluxes and exudate contribution to soil dissolved organic matter (DOM) were estimated. Differences in exudate biodegradability were assessed by C-13 pulse labeling. Results E. vaginatum had the largest exudation fluxes, Sphagnum the lowest, and V. myrtillus intermediate, being the greatest in July. All species mostly exuded organic acids except Sphagnum in September when sugars (allose, xylose) and amino acids (cystine) dominated. Sphagnum exudates were more C-rich and less degradable than the vascular species exudates, which released both organic and inorganic N forms. E. vaginatum exudates were richer in amino acids and citrate especially in July. Exudates contributed up to 20% to soil DOM. Conclusions Plant species composition greatly affects exudate quantity, quality and timing. Plant exudates represent considerable contributions to soil DOM.

Název v anglickém jazyce

Species effects and seasonal trends on plant efflux quantity and quality in a spruce swamp forest

Popis výsledku anglicky

Aims We aimed to compare seasonal exudate quality and quantity between Sphagnum moss, Eriophorum vaginatum (graminoid) and Vaccinium myrtillus (ericoid shrub). Methods Exudates were collected in May, July and September 2014 using a culture-based method and characterized by total organic carbon (TOC) and nitrogen (TN) contents with exudation fluxes expressed on a root-mass basis. Organic acids, sugars and amino acids in the exudates were identified by ion exchange chromatography. C and N exudate fluxes, in situ exudation fluxes and exudate contribution to soil dissolved organic matter (DOM) were estimated. Differences in exudate biodegradability were assessed by C-13 pulse labeling. Results E. vaginatum had the largest exudation fluxes, Sphagnum the lowest, and V. myrtillus intermediate, being the greatest in July. All species mostly exuded organic acids except Sphagnum in September when sugars (allose, xylose) and amino acids (cystine) dominated. Sphagnum exudates were more C-rich and less degradable than the vascular species exudates, which released both organic and inorganic N forms. E. vaginatum exudates were richer in amino acids and citrate especially in July. Exudates contributed up to 20% to soil DOM. Conclusions Plant species composition greatly affects exudate quantity, quality and timing. Plant exudates represent considerable contributions to soil DOM.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40104 - Soil science

Projekt

<a href="/cs/project/GA13-17398S" target="_blank" >GA13-17398S: Funkční diverzita půdních mikroorganismů rašelinné smrčiny a její vliv na DOM v půdě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Plant and Soil

ISSN

0032-079X

e-ISSN

—

Svazek periodika

426

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

179-196

Kód UT WoS článku

000431962400012

EID výsledku v databázi Scopus

2-s2.0-85044027026