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The knowledge of the defoliation effects on the physiological processes resulting in tree growth is still lacking. How are the responses of the photosynthetic activity and the coresponding available carbohydrates to defoliation? What are the effects on height, on diameter growth and in the wood anatomical characteristics of tree rings? Verfügbare Sprachen: englisch |
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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. Verfügbare Sprachen: englisch |
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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. Verfügbare Sprachen: englisch |
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Mobilization of aluminium in acidic soils is regarded as a health threat to many European forests. In this project, we are developing biomarkers indicating Al exposure and effects by capitalizing on genome resources recently established for forest trees. Verfügbare Sprachen: englisch |
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Within this study critical levels of cadmium, mercury and lead in the soil matrix, soil solution, fungi, earthworms and their food sources will be determined and ecotoxicological effects on the soil microbial communities will be evaluated. Verfügbare Sprachen: englisch |
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The CCES-BigLink project will study initial weathering in the Damma glacier forefield. In particular, suproject 2 aims to characterize the biochemical interactions between microorganisms and mineral surfaces and their influence on mineral dissolution rates. Verfügbare Sprachen: englisch |
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Scientists investigate the reactions of fine roots of spruce and poplar to enhanced heavy metal contents in the soil. They measure growth and architecture of newly derived fine roots of these trees and investigate mycorrhizas of birches in order to localise and quantify the heavy metals on a subcellular level. Verfügbare Sprachen: englisch |
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COST Action FP0803 chaired by WSL soil scientist Ivano Brunner. Focusing on the four key areas: fine root turnover, mycorrhizal mycelia turnover, soil C stocks, and biogeochemical modelling, with the intention of linking the different research fields involved, evaluating the potential of new and innovative methodologies, and developing new process-based descriptions of belowground C dynamics within biogeochemical models. Verfügbare Sprachen: englisch |
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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. Verfügbare Sprachen: deutsch |
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The proposed project has the aim to investigate fluxes, pools, and turnover of C within the fine root systems of individual trees over time and space. The various forms of labelled C, from fine roots respired CO2 as well as non-structural and structural carbohydrates within the fine roots, recorded shortly before and after the C pulse will give important information about the contribution of individual trees to the soil C and its dynamics. Verfügbare Sprachen: englisch |
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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. Verfügbare Sprachen: englisch |
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The aim of this project is to investigate whether roots of European chestnut (Castanea sativa) show physiological reactions to soil acidification processes. Verfügbare Sprachen: englisch |
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Feinstwurzeln von Bäumen sind die eigentlichen Schnittstellen zwischen Bodenlösung und Pflanze. Wie beeinflussen Umweltveränderungen den Wurzelraum von Waldbäumen und den Zustand der Mykorrhizen? |