Axel Göttlein

TL;DR: In this paper, a review of methods and models that help to assess how root activity changes soil properties and affects the fluxes of matter in the soil is presented. But, while there are promising first results on using non-invasive geophysical methods to assess the plant's influence on soil moisture, there are no such tools in the pipeline to assess spatial heterogeneity of chemical properties and processes in the field.

TL;DR: Comparisons with nutrient ratios related to the susceptibility to parasite attacks show that the thresholds are close to a general optimum range, indicating health and intact resistance mechanisms of these tree species.

TL;DR: This study stresses that competition is an important factor driving plant development, and suggests that the knowledge about responses of plants to elevated CO2 and/or O3, acquired from plants growing in monoculture, may not be transferred to plants grown under interspecific competition as typically found in the field.

TL;DR: In this article, micro-ceramic cells suitable for high resolution tensiometry and lysimetry have been developed, the construction of which is described in detail, and when combined with a pressure transducer the micro ceramic cells act as tensiometer, when coupled to a vacuum collecting device they can be used as micro suction cups.

TL;DR: The findings indicate the potential of tree-ring stable isotopes from temperate forests to reconstruct changes in cloud cover, and to improve knowledge on basic physiological mechanisms of tree species growing in different habitats to cope with soil moisture deficits.