Sinikka Jasmin Paulus

Doctoral Researcher
Department Biogeochemical Integration (BGI)
Eco-Meterology
Hydrology-Biosphere-Climate Interactions
Intern. Max Planck Research School for Global Biogeochemical Cycles (IMPRS-gBGC)
+49 3641 57-6232
C1.008

Main Focus

I am currently analyzing concomitant and independent time series of water fluxes (lysimeters, sap flow, eddy covariance (EC)) jointly with time series of vegetation properties (spectral vegetation indices, dendrometer etc), and biometerological variables (temperature, vapor pressure deficit, soil moisture etc) in a Mediterranean tree grass ecosystem.

I am interested in

  • robust flux estimates of all terrestrial water flux components: precipitation, evapotranspiration and condensation processes of atmospheric humidity- such as dew and capillary condensation, as well as soil vapor adsorption
  • the seasonal and interanual variability of these fluxes
  • their implications for water and energy balances
  • and their effect on the biosphere

Past Research:

University of Freiburg - Institute of Ecosystem Physiology:
In the group of Maren Dubbert, we studied root water uptake processes in a temperate grassland using water stable isotopes. We combined two in situ measurement techniques to sample soil and leaf transpiration water vapor on a daily timescale. We further compared our results to the isotopic signature of destructively sampled material to gain additional information about methodological differences. (link thesis) (link paper)

University of Freiburg - Institute of Soil Ecology:
Under the supervision of Martin Maier I worked as a student's research assistant conducting research in the field of soil gas transport. We measured trace gas concentrations in the soil column with an group internally developed portable in situ sampling pole. Over different measurement campaigns we combined this technique with others, to gain information about

  • drivers of plot-scale variability of CH4 consumption (link)
  • the impact of turbulence driven pressure pumping on soil gas transport (link)
  • the interrelation between soil methane production and stem CH4 emission in Fagus sylvatica (link)

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