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Mr. Muhammad Usman Munir
University of Bayreuth, Germany

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Research Keywords & Expertise

0 Surface Water Hydrology
0 Water Resources
0 Hydrological Modelling
0 Climate change & groundwater
0 Headwater catchment hydrology

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Journal article
Published: 17 March 2021 in Sustainability
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The rhizosphere is one of the major components in the soil–plant–atmosphere continuum which controls the flow of water from the soil into roots. Plant roots release mucilage in the rhizosphere which is capable of altering the physio-chemical properties of this region. Here, we showed how mucilage impacted on rhizosphere hydraulic properties, using simple experiments. An artificial rhizosphere, treated or not with mucilage, was placed in a soil sample and suction was applied to mimic the negative pressure in plant xylem. The measured water contents and matric potential were coupled with numerical models to estimate the water retention curve and hydraulic conductivity. A slower loss of water was observed in the treated scenario which resulted in an increase in water retention. Moreover, a slightly lower hydraulic conductivity was initially observed in the treated scenario (8.44 × 10−4 cm s−1) compared to the controlled one in saturated soil. Over soil drying, a relatively higher unsaturated hydraulic conductivity was observed. In summary, we demonstrated that mucilage altered the rhizosphere hydraulic properties and enhanced the unsaturated hydraulic conductivity. These findings improve our understanding of how plants capture more water, and postulate that mucilage secretion could be an optimal trait for plant survival during soil drying.

ACS Style

Faisal Hayat; Mohanned Abdalla; Muhammad Munir. Effect of Chia Seed Mucilage on the Rhizosphere Hydraulic Characteristics. Sustainability 2021, 13, 3303 .

AMA Style

Faisal Hayat, Mohanned Abdalla, Muhammad Munir. Effect of Chia Seed Mucilage on the Rhizosphere Hydraulic Characteristics. Sustainability. 2021; 13 (6):3303.

Chicago/Turabian Style

Faisal Hayat; Mohanned Abdalla; Muhammad Munir. 2021. "Effect of Chia Seed Mucilage on the Rhizosphere Hydraulic Characteristics." Sustainability 13, no. 6: 3303.

Preprint content
Published: 04 March 2021
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Radon (222Rn) is widely used as a natural tracer to investigate surface/groundwater interactions for hydrological systems. Because 222Rn activities in groundwater are higher compared to surface water, it can be used to quantify groundwater inflow rates into rivers and streams. Here we present a process-based model to simulate 222Rn emanation and transport in groundwater to investigate surface/groundwater interactions for the  Große Ohe catchment, located in the Bavarian Forest National Park (Germany). For representing surface and groundwater flow in the catchment as well as transport, decay, and emanation of 222Rn, the processed based hydrological model HydroGeosphere (HGS) is used. HGS is an integrated surface sub-surface hydrological model (ISSHM) which can simulate reactive transport in surface and sub-surface flow. The model was calibrated using measured in-stream 222Rn activities and continuous discharge observations. Main objective of this study is to investigate runoff generation in the catchment and how hydrological processes are affecting the age and residence time composition of groundwater.  

ACS Style

Muhammad Usman Munir; Sven Frei. Investigation of runoff generation and Radon-222 activities in a forested catchment using HydroGeoSphere. 2021, 1 .

AMA Style

Muhammad Usman Munir, Sven Frei. Investigation of runoff generation and Radon-222 activities in a forested catchment using HydroGeoSphere. . 2021; ():1.

Chicago/Turabian Style

Muhammad Usman Munir; Sven Frei. 2021. "Investigation of runoff generation and Radon-222 activities in a forested catchment using HydroGeoSphere." , no. : 1.