Drivers of nitrogen leaching from organic layers in Central European beech forests

Schwarz, Martin; Bischoff, Sebastian; Blaser, Stefan; Boch, Steffen; Grassein, Fabrice; Schmitt, Barbara; Klarner, Bernhard; Solly, Emily F.; Ammer, Christian; Michalzik, Beate; Schall, Peter; Scheu, Stefan; Schöning, Ingo; Schrumpf, Marion; Schulze, Ernst-Detlef; Siemens, Jan; Wilcke, Wolfgang (2016). Drivers of nitrogen leaching from organic layers in Central European beech forests. Plant and Soil, 403(1-2), pp. 343-360. Springer 10.1007/s11104-016-2798-0

[img]
Preview
Text (Author's self archiving version)
Schwarzetal2016PlantSoil.pdf - Accepted Version
Available under License Publisher holds Copyright.
The final publication is available at link.springer.com (http://link.springer.com/article/10.1007/s11104-016-2798-0)

Download (502kB) | Preview
[img] Text
art%3A10.1007%2Fs11104-016-2798-0.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.
Springer International Publishing Switzerland 2016

Download (394kB) | Request a copy

Background and Aims: The response of forest ecosystems to continuous nitrogen (N) deposition is still uncertain. We investigated imports and exports of dissolved N from mull-type organic layers to identify the controls of N leaching in Central European beech forests under continuous N deposition. Methods: Dissolved N fluxes with throughfall and through mull-type organic layers (litter leachate) were measured continuously in 12 beech forests on calcareous soil in two regions in Germany over three consecutive growing seasons. Results Mean growing season net (i.e. litter leachate – throughfall flux) fluxes of total dissolved N (TDN) from the organic layer were low (2.3 ± 5.6 kg ha −1 ) but varied widely from 12.9 kg ha −1 to –8.3 kg ha −1 . The small increase of dissolved N fluxes during the water passage through mull-type organic layers suggested that high turnover rates coincided with high microbial N assimilation and plant N uptake. Stand basal area had a positive feedback on N fluxes by providing litter for soil organic matter forma- tion. Plant diversity, especially herb diversity, reduced dissolved N fluxes. Soil fauna biomass increased NO3−-N fluxes with litter leachate by stimulating mineralization. Microbial biomass measures were not related to dissolved N fluxes. Conclusions Our results show that dissolved N exports from organic layers contain significant amounts of throughfall-derived N (mainly NO3−-N) that flushes through the organic layer but also highlight that N leaching from organic layers is driven by the complex interplay of plants, animals and microbes. Furthermore, diverse understories reduce N leaching from Central European beech forests.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science
08 Faculty of Science > Institute of Geography
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Ecology
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Schwarz, Martin; Blaser, Stefan; Boch, Steffen; Grassein, Fabrice; Schmitt, Barbara and Wilcke, Wolfgang

Subjects:

900 History > 910 Geography & travel
500 Science
500 Science > 550 Earth sciences & geology
500 Science > 570 Life sciences; biology
500 Science > 580 Plants (Botany)
500 Science > 590 Animals (Zoology)

ISSN:

0032-079X

Publisher:

Springer

Funders:

[UNSPECIFIED] Deutsche Forschungsgesellschaft

Projects:

[UNSPECIFIED] Wi1601/12-2
[UNSPECIFIED] Si 1106/4-2
[UNSPECIFIED] Mi 927/2-2

Language:

English

Submitter:

Dr. Martin Schwarz

Date Deposited:

04 Mar 2016 07:54

Last Modified:

31 Jan 2017 02:30

Publisher DOI:

10.1007/s11104-016-2798-0

Uncontrolled Keywords:

Terrestrial nitrogen cycling, Ecosystem functioning, Litter leachate, Organic layer, Biodiversity Exploratories, Deciduous forest

BORIS DOI:

10.7892/boris.76324

URI:

https://boris.unibe.ch/id/eprint/76324

Actions (login required)

Edit item Edit item
Provide Feedback