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Projects

Tracing nitrate in water from the forest to the aquifer using stable isotopes of oxygen and nitrogen
Tracing nitrate in water

The sources of nitrate in ground water and the transformation of nitrogen along hydrologic flow paths are investigated in a riparian zone along a restored corridor of the river Thur in Switzerland using oxygen and nitrogen isotopes in nitrate.

Available languages: English 

Heavy metals in Swiss forest soils
Heavy metals in Swiss forest soils

The aim of this project is to obtain an overview of contents, effective mobility and potential ecotoxicity of heavy metals in Swiss forest soils.

Available languages: German  English 

Soil solution chemistry and soil water availability in long-term monitoring forest plots (LWF)
Soil solution in LWF plots

The chemistry of soil solution and the soil water availability for plants have been monitored since 1997 in seven forest plots in Switzerland. This project, linked to the Swiss Long-term Forest Ecosystem Research project (LWF), aims to assess the soil response to atmospheric pollution (acidifying substances and nitrogen) and to climate change.

Available languages: English 

Nitrogen cycling in floodplain soils
Record-Rhizosphere

This project is part of the large multidisciplinary CCES project RECORD (Assessment and Modeling of Coupled Ecological and Hydrological Dynamics in the Restored Corridor of the River Thur). It deals with the role of microbial transformations and plant uptake in the cycling of nitrogen in different functional processing zones of a restored section of river Thur. The results will help to gain a better understanding of the filter function of restored river corridors and of their potential to emit greenhouse gases.

Available languages: English 

Bodenversauerung und Baumwurzelvitalität
Baumwurzelvitalität

Ziel des vorliegenden Projektes ist es, die vermuteten Zusammenhänge zwischen Bodenversauerung und Wurzelschädigung nachzuweisen. Dazu soll die ‘Vitalität’ der Feinwurzeln von Buchen an denjenigen Waldstandorten erfasst werden, welche gemäss der Indikatoren für Aluminium-Stress die kritischsten Werte im Schweizer Mittelland aufweisen.

Available languages: German 

Aluminium and heavy metal induced organic acid exudation of forest tree roots and the role of ectomycorrhizas
Organic acid exudation

This project has the aim to investigate whether tree roots, similarly to many crop plants, exude organic acids at enhanced concentrations of Al or heavy metals.

Available languages: English 

Mapping, sampling and analyses of soils on LTER sites
Soil matrix LTER

Since 1996, the long-term forest ecosystem monitoring program LTER observes the development of 16 selected forest ecosystems in Switzerland. Considering their pivotal role the investigations of soils is of central importance for the program.

Available languages: German  English 

Waldböden der Schweiz
Waldböden Schweiz

Die Buchpublikation „Waldböden der Schweiz“ umfasst 3 Bände. Sie bietet einen auf Feldansprachen und Labordaten abgestützten Überblick der Waldböden der Schweiz. Band 1 dokumentiert die bodenkundlichen Grundlagen und ausgewählte Böden des Jura. Band 2 enthält die Böden der Alpen und Alpensüdseite, Band 3 jene des Mittellandes und der Voralpen.

Available languages: German 

Microhabitat effects on N2O emissions from semiterrestrial soils
N2O emissions from soils

This project is part of the large multidisciplinary CCES project RECORD-Catchment, which investigates various aspects of river corridor management in the River Thur catchment. This SNF funded sub-project investigates factors on the microscale that govern the greenhouse gas potential of floodplain and related gleyic forest soils. This includes soil aggregation, plant - soil - microbe interactions and litter accumulations.

Available languages: English 

Root exudation by Lupinus albus and Thlaspi species and effects on trace metal and phosphorus mobility in soils
Root exudation

In this project the root exudation of organic acid anions by Lupinus albus and the mobilisation of metals in the rhizosphere of Thlaspi species is studied in-situ in soil solution.

Available languages: English 

From Cell to Tree: the Soil
Cell-Tree-Soil

This is part of the project cluster “From Cell to Tree”. The phytostabilisation of metal contaminated soils by afforestation is investigated in a large lysimeter experiment. In this subproject, the chemical properties of the soil and how they affect roots and microorganism are studied.

Available languages: English 

The role of root exudates in the aluminum tolerance of Norway spruce
Aluminium tolerance of spruce

Acidification of forest soils can lead to high concentrations of phytotoxic aluminium in the soil solution. In this project the hypothesis is tested that the aluminium tolerance of Norway spruce is increased by root exudation of organic acid anions that form stable complexes with the metal.

Available languages: English 

The role of plant root exudates in the acquisition of biolimiting nutrients at early stages of soil development
BigLink-SoilSolution

This project is part of the multidisciplinary CCES project BigLink („Biosphere-Geosphere interactions: Linking climate change, weathering, soil formation and ecosystem evolution“). It studies the plant-soil-microbe interactions at early succession stages in the Damma glacier forefield occurring in response to limited nutrient availability.

Available languages: English 

 

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