FG Ökohydrologie & Landschaftsbewertung

15 Items

Recent Submissions
Merging patterns and processes of diffuse pollution in urban watersheds: A connectivity assessment

Paton, Eva ; Haacke, Nasrin (2021-05-03)

Urban diffuse pollution affects water resources as much as its rural counterpart does; however, it is considerably less studied. The full complexity of the urban landscape needs to be addressed to apprehend the diversity of surface layouts and covers, multiple pollution sources, and the diverse changes caused by different types of drainage systems. In this article, crucial patterns of pollution...

Do earthworms (D. veneta) influence plant-available water in technogenic soil-like substrate from bricks and compost?

Ulrich, Susanne ; Willaredt, Moreen ; Nehls, Thomas ; van Schaik, Loes (2020-09-15)

Purpose: Topsoil and peat are often taken from intact rural ecosystems to supply the urban demand for fertile soils and soil-like substrates. One way of reducing this exploitation is to recycle suitable urban wastes to produce Technosols and technogenic soil-like substrates. In this study, we investigate the role earthworms can play in impacting the hydraulic properties of such a soil-like subs...

Investigation of water retention functions of artificial soil-like substrates for a range of mixing ratios of two components

Willaredt, Moreen ; Nehls, Thomas (2020-08-04)

Purpose: Urban greening is politically fostered as an adaptation strategy to climate change. Therefore, the demand for fertile planting substrates increases. Such substrates are usually mixed from mined geogenic resources but should rather be produced from recycled materials. Furthermore, their hydraulic properties should be designed according to their application, e.g., by optimizing the mixin...

Water dynamics at the urban soil-atmosphere interface—rainwater storage in paved surfaces and its dependence on rain event characteristics

Nehls, Thomas ; Peters, Andre ; Kraus, Fabian ; Rim, Yong Nam (2020-08-28)

Purpose: The surface store governs the rainwater partition, e.g., water storage and evaporation on paved surfaces, especially for low-intensity and low-sum rain events, which account for the greatest part of the total rainfall in a temperate climate city like Berlin, Germany. The surface store S is a fixed value, dependent on surface relief and pore system characteristics. Contrary, in this stu...

Three-Dimensional Mapping of Forest Soil Carbon Stocks Using SCORPAN Modelling and Relative Depth Gradients in the North-Eastern Lowlands of Germany

Russ, Alexander ; Riek, Winfried ; Wessolek, Gerd (2021-01-13)

To cope with the challenges in forest management that are contemporarily caused by climate change, data on current chemical and physical soil properties are more and more necessary. For this purpose, we present a further amalgam of depth functions and SCORPAN modelling to provide data at arbitrary depth layers. In this concept, regionalisation is split up into the modelling of plot totals and t...

Physically based model for gully simulation: application to the Brazilian semiarid region

Alencar, Pedro Henrique Lima ; Araújo, José Carlos de ; Teixeira, Adunias dos Santos (2020-08-28)

Gullies lead to land degradation and desertification as well as increasing environmental and societal threats, especially in arid and semiarid regions. Despite this fact, there is a lack of related research initiatives. In an effort to better understand soil loss in these systems, we studied small permanent gullies, which are a recurrent problem in the Brazilian northeastern semiarid region. Th...

One-dimensional heat and mass transfer model for Vertical Greenery Systems - VGheat1D

Hoffmann, Karin (2020-09-02)

Densely populated city quarters lacking green infrastructure increase the urban heat island effect and thermal discomfort outdoors and indoors. Façade greenings (FG) cool buildings and their surroundings through shading, insulation and transpiration, as demonstrated both experimentally and in simulations. FG also reduces the energy consumption for building cooling. Because of complex interrelat...

Mesoscale mapping of sediment source hotspots for dam sediment management in data-sparse semi-arid catchments

Smetanová, Anna ; Müller, Anne ; Zargar, Morteza ; Suleiman, Mohamed A. ; Gholami, Faraz Rabei ; Mousavi, Maryam (2020-02-01)

Land degradation and water availability in semi-arid regions are interdependent challenges for management that are influenced by climatic and anthropogenic changes. Erosion and high sediment loads in rivers cause reservoir siltation and decrease storage capacity, which pose risk on water security for citizens, agriculture, and industry. In regions where resources for management are limited, ide...

Penetration Depth of a Soil Moisture Profile Probe Working in Time-Domain Transmission Mode

Kafarski, Marcin ; Majcher, Jacek ; Wilczek, Andrzej ; Szyplowska, Agnieszka ; Lewandowski, Arkadiusz ; Zackiewicz, Alicja ; Skierucha, Wojciech (2019-12-12)

Soil moisture is one of the most important soil parameters. Knowledge of volumetric water content (VWC) of the root zone as well as the VWC dynamics in the soil profile is especially important for agriculture. Monitoring VWC at several depths in the soil profile can be performed using several soil moisture sensors placed at various depths. However, the use of a profile probe is more convenient,...

Phosphorus availability and growth of benthic primary producers in littoral lake sediments

Gillefalk, Mikael ; Herzog, Christiane ; Hilt, Sabine (2019-05-27)

Submerged macrophytes and periphyton are benthic primary producers that play an important role for several ecosystem functions of lakes. Their growth often depends on the availability of phosphorus (P) in sediments and overlying water. This P availability is assumed to potentially be affected by induced bank filtration (IBF), a cost-effective method for drinking water production. In this study,...

Advanced In Situ Soil Water Sampling System for Monitoring Solute Fluxes in the Vadose Zone

Reck, Arne ; Paton, Eva ; Kluge, Björn (2019-07-25)

To estimate potential risks of groundwater contamination, national and international environmental legislation stipulates standard values referred to pollutant contents in the soil and more rarely referred to loads in the soil leachate. Although in situ soil leachate analysis yields more realistic drainage water quality estimates than soil contamination level–derived estimates, there is no exis...

Effects of bank filtration on lake ecosystems

Gillefalk, Mikael (2019)

With ongoing population growth and increasing urbanisation the pressure on urban water bodies increases. In 2015 four billion people, more than half of the world’s population, lived in cities. The task to provide them with safe drinking water is massive. In case of severe pollution the production of drinking water using surface water can be risky and expensive. The preferred raw water source is...

Climate Change in Afghanistan Deduced from Reanalysis and Coordinated Regional Climate Downscaling Experiment (CORDEX)—South Asia Simulations

Aich, Valentin ; Akhundzadah, Noor Ahmad ; Knuerr, Alec ; Khoshbeen, Ahmad ; Hattermann, Fred ; Paeth, Heiko ; Scanlon, Andrew ; Paton, Eva Nora (2017-05-23)

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Perspectives and ambitions of interdisciplinary connectivity researchers

Paton, Eva Nora ; Smetanová, Anna ; Krueger, Tobias ; Parsons, Anthony (2019-01-29)

The article reviews research perspectives and ambitions of connectivity scientists in order to facilitate and improve joint connectivity research efforts across disciplinary boundaries. The assessment of four very different viewpoints (pragmatic, conceptual, epistemological and ontological) on connectivity signifies the diversity of thought and practice in the connectivity community and calls f...

Estimating Pore Water Electrical Conductivity of Sandy Soil from Time Domain Reflectometry Records Using a Time-Varying Dynamic Linear Model

Aljoumani, Basem ; Sanchez-Espigares, Jose A. ; Wessolek, Gerd (2018-12-13)

Despite the importance of computing soil pore water electrical conductivity (σp) from soil bulk electrical conductivity (σb) in ecological and hydrological applications, a good method of doing so remains elusive. The Hilhorst concept offers a theoretical model describing a linear relationship between σb, and relative dielectric permittivity (εb) in moist soil. The reciprocal of pore water elect...