The fate of N-15 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%2F00216208%3A11320%2F18%3A10380789" target="_blank" >RIV/00216208:11320/18:10380789 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs11270-018-3731-3" target="_blank" >https://link.springer.com/article/10.1007%2Fs11270-018-3731-3</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 N-15 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 livingmoss 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 (&gt; 40 kg ha(-1) year(-1)) than the southern site, BS. Today, atmospheric N inputs at both sites are comparable (15 and 11 kg ha(-1) year(-1), respectively). Replicated peat cores were collected from the wet central segments of both study sites, N-15-NO(3)(-)tracer was applied on the moss surface, and the peat cores were incubated under water-logged conditions. After 40 weeks, the rate of downcore leaching of the N-15 tracer was assessed. The recent history of high N pollution at ZL did not accelerate N-15 penetration into deeper peat layers, relative to BS. At both sites, less than 3% of the N-15 tracer reached the shallow depth of 9 cm. Analysis of control peat cores, along with a Pb-210 chronology, revealed removal of the &quot;excess&quot; Nfrom the ZL peat profiles prior to sampling. Following a decrease of atmospheric N pollution in the past two decades, efficient filtering of atmospheric N by Sphagnum at ZL 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

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Water, Air &amp; Soil Pollution

ISSN

0049-6979

e-ISSN

—

Volume of the periodical

229

Issue of the periodical within the volume

70

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

1-14

UT code for WoS article

000428305400030

EID of the result in the Scopus database

2-s2.0-85042379619