The Fate of 15N Tracer in Waterlogged Peat Cores from Two Central European Bogs with Different N Pollution History

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000178" target="_blank" >RIV/00025798:_____/18:00000178 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11270-018-3731-3?wt_mc=Internal.Event.1.SEM.ArticleAuthorIncrementalIssue#citeas" target="_blank" >https://link.springer.com/article/10.1007/s11270-018-3731-3?wt_mc=Internal.Event.1.SEM.ArticleAuthorIncrementalIssue#citeas</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11270-018-3731-3" target="_blank" >10.1007/s11270-018-3731-3</a>

Result language

angličtina

Original language name

The Fate of 15N Tracer in Waterlogged Peat Cores from Two Central European Bogs with Different N Pollution History

Original language description

Under low nitrogen (N) input into rain-fed peat bogs, Sphagnum moss efficiently filters incoming N, preventing invasion of vascular plants and peat oxygenation. Elevated atmospheric N deposition, in combination with climatic warming, may cause retreat of bryophytes and degradation of peat deposits. There are concerns that higher emissions of greenhouse gases, accompanying peat thinning, will accelerate global warming. Breakthrough of deposited N below living moss has been quantified for two Central European peat bogs dominated by Sphagnum magellanicum. In the 1990s, the northern site, ZL, received three times more atmospheric N (> 40 kg ha-1 yr-1) than the southern site, BS. Today, atmospheric N inputs at both sites are comparable (15 and 11 kg ha-1 yr-1, respectively). Replicated peat cores were collected from the wet central segments of both study sites, 15N-NO3- tracer was applied on the moss surface, and the peat cores were incubated in water-logged conditions. After 40 weeks, the rate of downcore leaching of the 15N tracer was assessed. The recent history of high N pollution at ZL did not accelerate 15N penetration into deeper peat layers, relative to BS. At both sites, less than 3 percent of the 15N tracer reached the shallow depth of 9 cm. Analysis of control peat cores, along with a 210Pb chronology, revealed removal of the 'excess' N from the ZL peat profiles prior to sampling. Following a decrease of atmospheric N pollution at ZL in the past two decades, efficient filtering of atmospheric N by Sphagnum has been renewed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/GA16-18079S" target="_blank" >GA16-18079S: Isotope constraints on microbial N2-fixation in ombrotrophic peat bogs</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Water, Air and Soil Pollution

ISSN

0049-6979

e-ISSN

—

Volume of the periodical

229

Issue of the periodical within the volume

3:70

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

nestránkováno

UT code for WoS article

000428305400030

EID of the result in the Scopus database

2-s2.0-85042379619