Bernd Ahrends
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View article: Dynamics of stable isotopes in precipitation, soil water and groundwater at a Norway spruce and a European beech site at Solling, Germany
Dynamics of stable isotopes in precipitation, soil water and groundwater at a Norway spruce and a European beech site at Solling, Germany Open
Ongoing changes in climate alter the role of forests in the hydrologic cycle, influencing water transmission to springs and aquifers. Here we compared two forests dominated by either beech or spruce on broadly similar soils (Dystric Cambis…
View article: Phenological Model Predictions and Climate Projections Accuracy: Implications for Spring Frost Risk for Quercus Robur in Central Europe
Phenological Model Predictions and Climate Projections Accuracy: Implications for Spring Frost Risk for Quercus Robur in Central Europe Open
View article: How do bark beetle outbreaks impact water quality in temperate forested catchments?
How do bark beetle outbreaks impact water quality in temperate forested catchments? Open
Temperate forests provide ecosystem services such as protecting water environment, timber and fuel production, carbon sequestration, and reduction of nutrient loss. During the last decades, large forest areas were decimated world-wide by b…
View article: Reconstructing spatial variability of forest soil water characteristic by using a combination of electrical resistivity tomography and local soil water content measurements
Reconstructing spatial variability of forest soil water characteristic by using a combination of electrical resistivity tomography and local soil water content measurements Open
Effective management of groundwater resources requires conclusive evidence and understanding of forest management effects (tree species selection, harvest intensities, forest rotation periods) on groundwater recharge. The high spatial vari…
View article: Underestimation of potassium in forest dry deposition? – A simulation experiment in rural Germany
Underestimation of potassium in forest dry deposition? – A simulation experiment in rural Germany Open
Measurements of throughfall (TF) and wet deposition (WD) are a common method to assess nitrogen (N) and base cation (BC) deposition to forests. Using TF and WD, dry deposition (DD) is usually calculated with a canopy budget model (CBM) ass…
View article: Nitrogen deposition in forests: Statistical modeling of total deposition from throughfall loads
Nitrogen deposition in forests: Statistical modeling of total deposition from throughfall loads Open
Introduction Nitrogen (N) gradient studies in some cases use N deposition in throughfall as measure of N deposition to forests. For evaluating critical loads of N, however, information on total N deposition is required, i.e., the sum of es…
View article: Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 1)
Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 1) Open
Auf 47 Versuchsflächen unter Wald in Deutschland (Hessen, Niedersachsen, Sachsen-Anhalt, Schleswig-Holstein) wurde der chemische Bodenzustand untersucht. Die Inventuren fanden zwischen 1966 und 2021 mit i.d. Regel 10-jähriger Wiederholung …
View article: Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 2)
Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 2) Open
Auf 47 Versuchsflächen unter Wald in Deutschland (Hessen, Niedersachsen, Sachsen-Anhalt, Schleswig-Holstein) wurde der chemische Bodenzustand untersucht. Die Inventuren fanden zwischen 1966 und 2021 mit i.d. Regel 10-jähriger Wiederholung …
View article: Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 1)
Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 1) Open
Auf 47 Versuchsflächen unter Wald in Deutschland (Hessen, Niedersachsen, Sachsen-Anhalt, Schleswig-Holstein) wurde der chemische Bodenzustand untersucht. Die Inventuren fanden zwischen 1966 und 2021 mit i.d. Regel 10-jähriger Wiederholung …
View article: Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 2)
Monitoring des Zustands von Waldböden in Hessen, Niedersachsen, Sachsen-Anhalt und Schleswig-Holstein von 1966 bis 2021 (Teil 2) Open
Auf 47 Versuchsflächen unter Wald in Deutschland (Hessen, Niedersachsen, Sachsen-Anhalt, Schleswig-Holstein) wurde der chemische Bodenzustand untersucht. Die Inventuren fanden zwischen 1966 und 2021 mit i.d. Regel 10-jähriger Wiederholung …
View article: The Influence of Tree Species on the Recovery of Forest Soils from Acidification in Lower Saxony, Germany
The Influence of Tree Species on the Recovery of Forest Soils from Acidification in Lower Saxony, Germany Open
Atmospheric acid deposition has increased sharply since the beginning of industrialization but has decreased considerably since the 1980s owing to clean-air policies. Soil acidification induced by an input of acidity has been demonstrated …
View article: Merits and Limitations of Element Balances as a Forest Planning Tool for Harvest Intensities and Sustainable Nutrient Management—A Case Study from Germany
Merits and Limitations of Element Balances as a Forest Planning Tool for Harvest Intensities and Sustainable Nutrient Management—A Case Study from Germany Open
Climate change and rising energy costs have led to increasing interest in the use of tree harvest residues as feedstock for bioenergy in recent years. With an increasing use of wood biomass and harvest residues, essential nutrient elements…
View article: Hauptergebnisse und Folgerungen für die forstliche Praxis
Hauptergebnisse und Folgerungen für die forstliche Praxis Open
Wie repräsentativ sind die Bodenzustandserhebungen? Sind die Ergebnisse für die wichtigsten Bodensubstrate in den Wäldern aussagekräftig?Vergleicht man die prozentuale Verteilung der Substratgruppen der BZE II-Punkte in Sachsen-Anhalt mit …
View article: Hauptergebnisse und Folgerungen für die forstliche Praxis
Hauptergebnisse und Folgerungen für die forstliche Praxis Open
Wie repräsentativ sind die Bodenzustandserhebungen? Sind die Ergebnisse für die wichtigsten Bodensubstrate in den Wäldern aussagekräftig?Vergleicht man die prozentuale Verteilung der Substratgruppen der BZE II-Punkte in Sachsen-Anhalt mit …
View article: Flugasche, Düngung, Waldkalkung und Bodenbearbeitung
Flugasche, Düngung, Waldkalkung und Bodenbearbeitung Open
View article: Flugasche, Düngung, Waldkalkung und Bodenbearbeitung
Flugasche, Düngung, Waldkalkung und Bodenbearbeitung Open
View article: Supplementary material to "Physiological and climate controls on foliar mercury uptake by European tree species"
Supplementary material to "Physiological and climate controls on foliar mercury uptake by European tree species" Open
1 Description of tree species groups Table S 1. Classification of samples from different tree species within the processed dataset (i.e. after outlier correction) into groups of tree species and respective total number of samples within th…
View article: Spatial 3D mapping of forest soil carbon stocks in Hesse, Germany
Spatial 3D mapping of forest soil carbon stocks in Hesse, Germany Open
Background Forest soils are an important reservoir of organic carbon (OC) and a potential source or sink for atmospheric CO 2 . Prediction of OC stock changes under ongoing climatic and management changes requires a spatial explicit base. …
View article: Effects of Climate and Atmospheric Nitrogen Deposition on Early to Mid-Term Stage Litter Decomposition Across Biomes
Effects of Climate and Atmospheric Nitrogen Deposition on Early to Mid-Term Stage Litter Decomposition Across Biomes Open
Litter decomposition is a key process for carbon and nutrient cycling in terrestrial ecosystems and is mainly controlled by environmental conditions, substrate quantity and quality as well as microbial community abundance and composition. …
View article: Reply on RC1
Reply on RC1 Open
Abstract. Atmospheric deposition of nitrogen (N) has exceeded its demand for plant increment in forest ecosystems in Germany. High N inputs increased plant growth, the internal N cycling within the ecosystem, the retention…
View article: Reply on RC2
Reply on RC2 Open
Abstract. Atmospheric deposition of nitrogen (N) has exceeded its demand for plant increment in forest ecosystems in Germany. High N inputs increased plant growth, the internal N cycling within the ecosystem, the retention…
View article: Inference of forest soil nutrient regimes by integrating soil chemistry with fuzzy-logic: Regionwide application for stakeholders of Hesse, Germany
Inference of forest soil nutrient regimes by integrating soil chemistry with fuzzy-logic: Regionwide application for stakeholders of Hesse, Germany Open
The management of forests needs well informed decisions by stakeholders to fulfil the goals of sustainability, stability, and productivity. Decisions are guided by forest site maps. The forest site map of Hesse, Germany, consists of six so…
View article: Comparison of Methods for the Estimation of Total Inorganic Nitrogen Deposition to Forests in Germany
Comparison of Methods for the Estimation of Total Inorganic Nitrogen Deposition to Forests in Germany Open
A reliable quantification of total inorganic nitrogen (TIN) deposition to forests is required for the evaluation of ecological effects of TIN inputs to forests and to monitor the success of clean-air policy. As direct measurements are scar…
View article: A soil nutrient regime index for forest practitioner decisions in Hesse, Germany: spatial explicit modelling of soil chemistry and integration by fuzzy-logic
A soil nutrient regime index for forest practitioner decisions in Hesse, Germany: spatial explicit modelling of soil chemistry and integration by fuzzy-logic Open
<p>Forests face considerable pressure from climate change, while demand of provided ecosystem services is high. Managing and planting forests need well informed decisions by practitioners, to fulfill the goal of sustainability. In Ge…
View article: Soil Acidification in German Forest Soils
Soil Acidification in German Forest Soils Open
Many forest soils are sensitive to acidification due to input of acids from the atmosphere. As acidic deposition was strongly reduced during the last decades, the question arises, if indications of recovery from soil acidification are dete…
View article: Concept and Methodology of the National Forest Soil Inventory
Concept and Methodology of the National Forest Soil Inventory Open
The present report is based on the National Forest Soil Inventory (NFSI) as well as on case studies from Intensive Forest Monitoring sites in Germany. The current as well as the temporal development of forest soil conditions and the major …
View article: Unsicherheiten bei der Berechnung von Nährstoffbilanzen an Umweltmessnetzen
Unsicherheiten bei der Berechnung von Nährstoffbilanzen an Umweltmessnetzen Open
Obwohl die Nährstoffbilanz ein wichtiges Instrument bei der Entwicklung von Bewirtschaftungsstrategien ist, bestehen nach wie vor erhebliche Unsicherheiten, die ihren Einsatz in Forstplanung und Beratung der Waldbesitzer erschwert. Unbedin…
View article: Ableitung von bodenphysikalischen Parametern für Waldstandorte in Schleswig-Holstein
Ableitung von bodenphysikalischen Parametern für Waldstandorte in Schleswig-Holstein Open
Die steigende Nachfrage nach großmaßstäblichen Standorts- und Bodeninformationen im Bereich der forstlichen Planungs- und Entscheidungsunterstützung stellt immer höhere Anforderungen an die Qualität von bodenphysikalischen Basisinformatio…
View article: Is Biomass Accumulation in Forests an Option to Prevent Climate Change Induced Increases in Nitrate Concentrations in the North German Lowland?
Is Biomass Accumulation in Forests an Option to Prevent Climate Change Induced Increases in Nitrate Concentrations in the North German Lowland? Open
The North German Lowland is a region with locally high nitrate (NO3−) concentrations in seepage water, inducing an increased susceptibility to the effects of climate change. The future risk of rising NO3− concentrations in seepage water fr…
View article: Waldböden: Nutzung und Schutz
Waldböden: Nutzung und Schutz Open
Durch den globalen Wandel und andere Umwelteinflüsse verändern sich Waldböden dynamisch. Standortskonstanz kann nicht mehr vorausgesetzt werden, was Nutzung und Schutz von Waldböden vor neue Herausforderungen stellt. Dementsprechend werden…