Hannes KeckAlfred Wegener Institute Helmholtz Centre for Polar and Marine Research | AWI
M.Sc. Environmental Sciences
Overwintering scientist at Neumayer III Station, Antarctica
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Citations since 2017
6 Research Items
Currently I am working at the Department of Ecology, Swedish University of Agricultural Sciences. My research focuses on greenhouse gas fluxes, soil physics and N cycling.
Skills and Expertise
The relaxed eddy accumulation (REA) technique is frequently applied to measure fluxes of a large variety of atmospheric tracers above ecosystems. It is often the method of choice since the eddy covariance (EC) technique is limited to a few tracers due to the lack of fast response analysers, high financial costs and in some cases high power consumpt...
Purpose Methods for particle size distribution (PSD) determination by laser diffraction are not standardized and differ between disciplines and sectors. The effect of H2O2 pretreatment before a sonication treatment in laser diffraction analysis of soils and marine sediments was examined on soils with less than 1% C and some marine sediments. Mater...
Several studies have shown that the distribution of cation adsorption sites (CASs) is patchy at a millimetre to centimetre scale. Often, larger concentrations of CASs in biopores or aggregate coatings have been reported in the literature. This heterogeneity has implications on the accessibility of CASs and may influence the performance of soil syst...
Several studies have shown a patchy distribution of cation adsorption sites (CAS) in soils with higher concentrations of CAS in biopores or aggregate coatings. This heterogeneity has implications on the accessibility of CAS and may influence the performance of traditional soil system models. We present a new method to quantify the 3-D distribution...
Several studies have shown that the distribution of cation adsorption sites (CAS) is patchy at a millimeter to centimeter scale. Often, larger concentrations of CAS in biopores or aggregate coatings have been reported in the literature. This heterogeneity has implications on the accessibility of CAS and may influence the performance of soil system...
The biological soil crusts (BSCs) in the NW Negev cause local water redistribution by increasing surface runoff. The effects of pore clogging and swelling of organic and inorganic crust components were intensively investigated in earlier studies. However, the effect of water repellency (WR) was not addressed systematically yet. This study investiga...
Effects of Biological Soil Crusts on Water Repellency in a Sand Dune Ecosystem of the NW Negev, Israel.