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Nitrogen physiology of forest plants and soils

Objective

NIPHYS investigates effects of soil-borne and deposited nitrogen on forest organisms and soils along a climatic transect through Europe. NIPHYS will substantiate the understanding of nitrogen transformations in forest ecosystems and improve predictions on effects of changing depositions and global climate on broad-leaved and coniferous trees.


Investigations on forest decline have demonstrated the importance of nitrogen deposition in enhancing various nutritional imbalances in trees and soil. Nevertheless, it is presently not possible to answer several basic questions : (1) What form of nitrogen is used by trees in different environments, (2) what roles are played by soil properties, mycorrhiza, and microorganisms in the transformation of nitrogen in forest soils, (3) which process regulate the ammonium/nitrate ratio in soil solution. NIPHYS addresses these issues by investigating plant, microbial, and abiotic processes involved in the transformation of ammonium and nitrate in forest soils of different climatic regions. The project combines botanical, microbiological and soil science. Each participant will work at all study sites. General objectives are : (1) to compare broad-leaved and coniferous trees, (2) to quantify the ecosystem internal fluxes of ammonium and nitrate, (3) to identify the sources of nitrate in groundwaters, and (4) to develop the capacity to predict future development in forest soils with respect to soil acidification and groundwater quality.

Call for proposal

Data not available

Coordinator

UNIVERSITAET BAYREUTH
Address
Universitätsstrasse 30
95440 Bayreuth
Germany
 

Participants (8)

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
France
Address
Route De Mende 1919
34293 Montpellier
 
Danish Forest and Landscape Research Institute
Denmark
Address
16,Skovbrynet
2800 Lyngby
 
Institut National de la Recherche Agronomique (INRA)
France
Address
Centre De Recherche De Nancy Champenoux
54280 Seichamps
 
Natural Environment Research Council
United Kingdom
Address
Windermere Road
LA11 6JU Grange-over-sands - Cumbria
 
THE SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES
Sweden
Address

901 83 Umeå
 
THE SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES
Sweden
Address
Ulls V.33
750 07 Uppsala
 
UNIVERSITAET HOHENHEIM
Germany
Address
Fruwirthstr.20
70593 Stuttgart
 
UNIVERSITY OF SHEFFIELD
United Kingdom
Address
Western Bank
S10 2TN Sheffield