Unterschiede
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| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung Nächste ÜberarbeitungBeide Seiten der Revision | ||
| thesis:isotope_chambersystem [2020/02/25 13:13] – norlowski | thesis:isotope_chambersystem [2020/02/26 14:43] – norlowski | ||
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| ==== Developing a chamber system for measuring the isotopic composition of evaporation and transpiration from plants ==== | ==== Developing a chamber system for measuring the isotopic composition of evaporation and transpiration from plants ==== | ||
| - | An increasing number of scientists and disciplines around the world are benefitting from the application of stable water isotope techniques (2H and 18O), especially in ecohydrology. Stable isotope analysis of environmental waters | + | An increasing number of scientists and disciplines around the world are benefitting from the application of stable water isotope techniques (2H and 18O), especially in ecohydrology. Stable isotope analysis of environmental waters can help to investigate water flow paths through the Earth’s critical zone. However, clear bottlenecks for the ubiquitous application of isotopic analysis are the relatively high-energy and specialized |
| == Aim == | == Aim == | ||
| - | In this study, we would like to develop and evaluate a chamber system for measuring the isotopic composition of evaporated and transpired plant waters. The basic concept is to collect transpired vapor from leaves and evaporated water vapor from trees’ bark in a gas-tight chamber that can subsequently be analyzed with an isotope analyzer. The system will be tested under lab and field conditions and adapted to different tree species. | + | In this study, we would like to develop and evaluate a chamber system for measuring the isotopic composition of evaporated and transpired plant waters. The basic concept is to collect transpired vapor from leaves and evaporated water vapor from trees’ bark in a gas-tight chamber that can subsequently be analyzed with an isotope analyzer. The system will be tested under lab and field conditions and adapted to different tree species. |
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| == Challenges == | == Challenges == | ||
| Against this background, the potential candidate would: | Against this background, the potential candidate would: | ||
| * Develop and test a chamber system (access to a 3D-printer) | * Develop and test a chamber system (access to a 3D-printer) | ||
| - | * Prepare and conduct | + | * Prepare and conduct lab and field tests |
| * Sample evaporated and transpired water vapor for isotope analysis | * Sample evaporated and transpired water vapor for isotope analysis | ||
| * Determine isotopic differences between species’ evaporated and transpired water vapor | * Determine isotopic differences between species’ evaporated and transpired water vapor | ||