Climate Change affects the terrestrial biosphere, while changes in the biosphere feedback and affect the climate system. Understanding these complex interactions is important at these times of Global Change.
Related research in our lab tracks carbon sequestration in soils and wetlands. We measure soil carbon and not only the CO2 emitted during organic carbon decomposition but also make high-accuracy measurements of O2 influx. The comparison between these two gases enables better understanding of soil processes.
Previous research projects focus on developing the use of oxygen stable isotopes of phosphate for tracking phosphorus in dust and its biogeochemical cycling in soil. This research is based on field work, remote-sensing and lab work. These approaches could help evaluate the effects of changing climate on the terrestrial phosphorus cycle, which is an important limiting factor for plant growth.
In the last series of projects, we have developed, in collaboration with Prof. Amrani from my institute, an approach to measuring the sulfur isotopes of carbonyl sulfide (COS) and used this to determine its isotopic composition in the atmosphere, plant uptake, and seawater. This is done by sampling in the ocean and forests, and by lab experiments. Our continued research in this field will help to better constrain global-scale photosynthesis and the influence of this gas on Earth's albedo and, hence, climate.
Chen Davidson - Phd student Research interests: Studying sulfur isotopes of Carbonyl Sulfide in the atmosphere and in seawater, to better constrain the terrestrial global photosynthesis
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Former Members
Alie Naor - Former Msc student: Research interest: The effect of cellular PO4 uptake on the isotopic signature of extracellular phosphate in macrophytes and aquatic fungi.
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Yasmin Avidani - Former Msc student Research interest: Studying the oceanic source of COS and CS2 by sulfur stable isotopes, in aim to improve quantifications of global photosynthesis. |
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Laura Bigio - Former Phd student Research Interests: Atmospheric phosphate sources (dust, ash and pollen) and their contribution to the global phosphorus cycle. |
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Boaz Hilman - Former Phd student Currently: Post Doctoral researcher at Max Planck Institute for biogeochemestry |
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Hagar Lis - Former Post- Doctoral Researcher Currently: Associate researcher at the Plant science department at the Hebrew University. |
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Avner Gross - Former Phd student |
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