Hans Sandén
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View article: Effects of tree species richness on topsoil carbon and fungal diversity in European planted mixed forests are modulated by environmental conditions
Effects of tree species richness on topsoil carbon and fungal diversity in European planted mixed forests are modulated by environmental conditions Open
View article: Nitrogen Fertilization: Field Performance of an Amino-Acid-Based Fertilizer in Sessile Oak Reforestation
Nitrogen Fertilization: Field Performance of an Amino-Acid-Based Fertilizer in Sessile Oak Reforestation Open
Early seedling survival is a key determinant of reforestation success under increasingly variable climatic conditions. Fertilizers used to mitigate nutrient limitations are believed to mitigate early establishment stress, but their effecti…
View article: Above‐ and below‐ground phenology of four tree species in mixed forests and monospecific stands
Above‐ and below‐ground phenology of four tree species in mixed forests and monospecific stands Open
The phenology of tree root growth is poorly understood especially for mixed forests. To attempt to fill this knowledge gap, we selected four co‐occurring broadleaf trees species of the European forests ( Quercus robur , Carpinus betulus , …
View article: Diversity in Resource Use Strategies Promotes Productivity in Young Planted Tree Species Mixtures
Diversity in Resource Use Strategies Promotes Productivity in Young Planted Tree Species Mixtures Open
Mixed‐species forestry is a promising approach to enhance productivity, increase carbon sequestration, and mitigate climate change. Diverse forests, composed of species with varying structures and functional trait profiles, may have higher…
View article: Multiyear Drought Strengthens Positive and Negative Functional Diversity Effects on Tree Growth Response
Multiyear Drought Strengthens Positive and Negative Functional Diversity Effects on Tree Growth Response Open
Mixed‐species forests are proposed to enhance tree resistance and resilience to drought. However, growing evidence shows that tree species richness does not consistently improve tree growth responses to drought. The underlying mechanisms r…
View article: Patterns in Root Phenology of Woody Plants Across Climate Regions: Drivers, Constraints, and Ecosystem Implications
Patterns in Root Phenology of Woody Plants Across Climate Regions: Drivers, Constraints, and Ecosystem Implications Open
Root phenology significantly influences ecosystem processes yet remains poorly characterized across biomes. This study synthesized data from 59 studies spanning Arctic to tropical ecosystems to identify woody plants root phenological patte…
View article: Changes in Biological and Chemical Soil Properties in an Austrian Long‐Term Tillage Experiment
Changes in Biological and Chemical Soil Properties in an Austrian Long‐Term Tillage Experiment Open
Conventional tillage, including ploughing after harvest and/or for seedbed preparation, aims to incorporate crop residues and weeds and to loosen, mix and aerate the soil. However, less beneficial effects, such as a loss of soil organic ca…
View article: Effects of Tree Species Richness on Topsoil Carbon and Fungal Diversity in European Planted Mixed Forests are Modulated by Environmental Conditions
Effects of Tree Species Richness on Topsoil Carbon and Fungal Diversity in European Planted Mixed Forests are Modulated by Environmental Conditions Open
View article: Urban Groundwater Quality Pattern Dominated by Recharge and Redox Processes - High-Resolution Data Analysis for the Complex Shallow Aquifers in the City of Vienna, Austria
Urban Groundwater Quality Pattern Dominated by Recharge and Redox Processes - High-Resolution Data Analysis for the Complex Shallow Aquifers in the City of Vienna, Austria Open
View article: Multi-year drought strengthens positive and negative functional diversity effects on tree growth response
Multi-year drought strengthens positive and negative functional diversity effects on tree growth response Open
Mixed-species forests are proposed as strategy to increase the resistance and resilience of forests to drought stress. However, evidence suggest that increasing tree species richness does not consistently enhance tree growth responses to d…
View article: Are European Trees Prepared for Being Limited by Other Nutrients than Nitrogen?
Are European Trees Prepared for Being Limited by Other Nutrients than Nitrogen? Open
The growth of forest trees in the relatively young soils of Europe has historically been limited by nitrogen (N). The high anthropogenic N deposition and intense forest management during the last century, however, have caused forest trees …
View article: Changes in microbial physiology and carbon-use efficiency upon improving soil habitat conditions in conservation farming systems
Changes in microbial physiology and carbon-use efficiency upon improving soil habitat conditions in conservation farming systems Open
View article: Effects of Logging-Induced Soil Compaction on the Abundance and Characteristics of Fine Roots and Mycorrhizal Associations in Forest Soils and their Recovery
Effects of Logging-Induced Soil Compaction on the Abundance and Characteristics of Fine Roots and Mycorrhizal Associations in Forest Soils and their Recovery Open
Soil compaction in forests, often a result of logging activities, poses a significant threat to soil functioning and ecosystem services. Root systems and their symbiotic relationships with mycorrhizae are particularly affected. Given the v…
View article: Digital soil analysis and mapping using in-situ Vis-NIR spectroscopy – Challenges and future perspectives
Digital soil analysis and mapping using in-situ Vis-NIR spectroscopy – Challenges and future perspectives Open
The use of Vis-NIR spectroscopy in digital soil mapping is emerging as a fast, viable option to provide spatial and temporal information on specific soil parameters that serve as good indicators for soil health. While MIR spectro…
View article: The influence of vegetation drought stress on formaldehyde and ozone distributions over a central European city
The influence of vegetation drought stress on formaldehyde and ozone distributions over a central European city Open
To estimate the effect of vegetation stress and changes in biogenic volatile organic compound (BVOC) emissions on urban ozone (O3) levels we perform a systematic, observation-based analysis of the relationship between formaldehyde (HCHO) m…
View article: Contrasting effects of two hydrogels on biomass allocation, needle loss, and root growth of Picea abies seedlings under drought
Contrasting effects of two hydrogels on biomass allocation, needle loss, and root growth of Picea abies seedlings under drought Open
Adapted management methodologies are required to alleviate increasing and/or more frequent water stress under climate change, enabling successful tree seedling establishment after planting. Hydrogel amendments have been suggested to increa…
View article: Tall tower measurements with laser isotope spectrometry to investigate urban CO2 emissions in Vienna
Tall tower measurements with laser isotope spectrometry to investigate urban CO2 emissions in Vienna Open
Cities contribute significantly to global carbon dioxide (CO2) emissions, and it is important to understand and accurately measure these emissions in order to effectively mitigate climate change. Current methods for estimating emissions, s…
View article: Using tall tower flux measurements for GHG emissions monitoring in cities: Emerging results and perspectives from the Vienna Urban Carbon Laboratory
Using tall tower flux measurements for GHG emissions monitoring in cities: Emerging results and perspectives from the Vienna Urban Carbon Laboratory Open
The substantial urban contribution to global anthropogenic greenhouse gas (GHG) budgets underlines the importance of improved GHG emissions monitoring in cities. Reducing urban emissions of carbon dioxide (CO2) and methane (CH4) will be cr…
View article: What are the driving factors affecting urban groundwater quality? A multi-tracer approach for the assessment of Vienna’s shallow aquifers
What are the driving factors affecting urban groundwater quality? A multi-tracer approach for the assessment of Vienna’s shallow aquifers Open
Urban shallow groundwater is highly impacted in terms of hydrogeology and water quality by anthropogenic activities and infrastructure, such as heating and cooling, surface sealing, leaking sewage pipes, and underground buildings. For a su…
View article: Same, same, but different: Drought and salinity affect BVOC emission rate and alter blend composition of urban trees
Same, same, but different: Drought and salinity affect BVOC emission rate and alter blend composition of urban trees Open
Drought and salt are key abiotic stressors in temperate cities. Biogenic volatile organic compound (BVOC) emissions, often dominated by trees, influence the urban troposphere and mediate plant-plant and plant-insect interactions. While kno…
View article: Contrasting Effects of Two Hydrogels on Biomass Allocation, Needle Loss, and Root Growth of Picea Abies Seedlings Under Drought
Contrasting Effects of Two Hydrogels on Biomass Allocation, Needle Loss, and Root Growth of Picea Abies Seedlings Under Drought Open
View article: Scions impact biomass allocation and root enzymatic activity of rootstocks in grafted melon and watermelon plants
Scions impact biomass allocation and root enzymatic activity of rootstocks in grafted melon and watermelon plants Open
Vegetable grafting is increasingly recognized as an effective and sustainable plant production alternative. Grafted plants usually show increased uptake of water and minerals compared with self-rooted plants, mostly thought a consequence o…
View article: Diversity and interrelations among the constitutive BVOC emission blends and changes during salt and drought stress of four broad-leaved tree species at seedling stage
Diversity and interrelations among the constitutive BVOC emission blends and changes during salt and drought stress of four broad-leaved tree species at seedling stage Open
<p>Biogenic volatile organic compounds (BVOCs) emitted by plants consist of a broad range of gasses which serve purposes such as protecting against herbivores, communicating with insects and neighboring plants, or increasing the tole…
View article: Diversity and Interrelations Among the Constitutive VOC Emission Blends of Four Broad-Leaved Tree Species at Seedling Stage
Diversity and Interrelations Among the Constitutive VOC Emission Blends of Four Broad-Leaved Tree Species at Seedling Stage Open
Volatile organic compounds (VOCs) emitted by plants consist of a broad range of gasses which serve purposes such as protecting against herbivores, communicating with insects and neighboring plants, or increasing the tolerance to environmen…
View article: Deintensification of land use leads to recovery of soil microbial community composition and function after land use change in Ethiopia
Deintensification of land use leads to recovery of soil microbial community composition and function after land use change in Ethiopia Open
Ethiopia has undergone significant land use change during the past centuries, particularly deforestation. These changes have resulted in the loss of topsoil as well as the associated soil ecosystem functions. Grazing exclusion and planting…
View article: Effects of land use, short-term drought and warming on microbial responses to drying and rewetting
Effects of land use, short-term drought and warming on microbial responses to drying and rewetting Open
<p>Climate change predicts an increase in temperature and an intensification of the hydrological cycles resulting in more extreme drought and rainfall events. When dry soils experience a rainfall event, there is a big CO<sub>2&…
View article: Introducing the Vienna Urban Carbon Laboratory (VUCL)
Introducing the Vienna Urban Carbon Laboratory (VUCL) Open
<p>The Vienna Urban Carbon Laboratory (VUCL) has begun testing in situ measurement-based options for monitoring local carbon dioxide (CO<sub>2</sub>) and methane (CH<sub>4</sub>) emissions in Austria’…
View article: Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from <i>Quercus robur</i> L.
Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from <i>Quercus robur</i> L. Open
Drought events are expected to become more frequent with climate change. To predict the effect of plant emissions on air quality and potential feedback effects on climate, the study of biogenic volatile organic compound emissions under str…
View article: Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from <i>Quercus robur</i> L.
Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from <i>Quercus robur</i> L. Open
Drought events are expected to become more frequent with climate change. To predict the effect of plant emissions on air-quality and potential feedback effects on climate, the study of biogenic volatile organic compound emissions under str…
View article: Specific root respiration of three plant species as influenced by storage time and conditions
Specific root respiration of three plant species as influenced by storage time and conditions Open
Aims Specific root respiration (RR S ) is a key root trait, determining i.e. nutrient foraging and uptake efficiencies. However, a considerable uncertainty exists regarding the effects of storage time and conditions on RR S measurements. M…