Dr. Tiziana Boffa Ballaran
Physical sciences, EnvironmentMineralogy, crystallography, mineral physics
Environment
Oceanography, biogeochemistry
The interactions between physical and biological processes in the North Atlantic and its marginal seas on different spatial and temporal scales
Doctorate: "Physical constraints of particle production and sedimentation – case studies in the Northeast Atlantic" (2002), magna cum laude
Heisenberg fellowship
English, German, Polish, Russian
Fründt, B., Dippner, J.W., Waniek, J.J. (2015): Chlorophyll a reconstruction from in‐situ measurements, Part I: Method description, Journal of Geophysical Research, Biogeosciences, 120, 237-245, 10.1002/2014JG002691
Fründt, B., Dippner, J.W., Schulz-Bull, D.E., Waniek, J.J. (2015): Chlorophyll a reconstruction from in-situ measurements, Part II: Marked carbon uptake decrease in the last century, Journal of Geophysical Research, Biogeosciences, 120, 246-253, 10.1002/2014JG002692
Brust, J., Waniek, J.J.: Atmospheric dust contribution to deep-sea particle fluxes in the subtropical Northeast Atlantic. In: Deep Sea Research, Part I, accepted, 2010.
Chavagnac, V. et al.: Anti-Atlas Moroccan Chain as the source of lithogenic-derived micronutrient fluxes to the deep Northeast Atlantic Ocean. In: Geophys. Res. Lett. 34, 2007. L21604, doi: 10.1029/2007GL030985.
Ward, B., Waniek, J.J.: Phytoplankton growth conditions during autumn and winter in the Northern North Atlantic. In: Marine Ecology Progress Series 334, 2007. pp. 47-61.
Waniek, J.J., Holliday, N.P.: Large-scale Physical Controls on Phytoplankton Growth in the Irminger Sea, Part II: Model study of the Physical and Meteorological Preconditioning. In: Journal of Marine Systems 59, 2006. pp. 219-237.
Waniek, J.J. et al.: Interannual variability of deep water particle flux in relation to production and lateral sources in the northeast Atlantic. In: Deep Sea Research Part I, 52, 2005. pp. 33-50.
Waniek, J.J. et al.: Freshwater control of the onset and species composition of the Greenland shelf spring bloom. In: Marine Ecology Progress Series 288, 2005. pp. 45-57.
Waniek, J.J. et al.: Long-time series of deep water particle flux in three biogeochemical provinces of the northeast Atlantic. In: Journal of Marine Systems 56, 2005. pp. 391-415.
Lithflux: Solid matter and gases, in particular dust from the Sahara, are introduced into the subtropical Atlantic via the atmosphere and are then transported and transformed in various ways by means of chemical and biological processes. These immissions, matter transport, transitions of substances into different forms and sedimentation in the ocean are subject to considerable seasonal and year-to-year fluctuations and, according to our current understanding, they are affected by physical and biological processes. In this project, which is regionally focussed on the Kiel276 station, the following aspects are being investigated, among others:
1) To which temporal and regional fluctuations are the aeolian immissions subject?
2) Which temporal variations occur with respect to the place of origin of the lithogenous particles?
3) What role do the lithogenous flows and the resulting iron input play in the oceanic primary production of the subtropical Atlantic?
Asymmetry: Two long-term oceanic stations in the North Atlantic Gyre were selected as study areas for this project due to their hydrographic and biological peculiarities, in particular the east/west asymmetry in their properties. The work is concentrating regionally on the Kiel276 station in the Madeira Basin of the subtropical Northeast Atlantic and the Bermuda Atlantic Time-series Study (BATS) station in the western subtropical North Atlantic. In the framework of the project, the following questions are to be investigated:
1) How representative are the BATS and Kiel276 stations for the oceanic provinces? Which hydrographic and biogeochemical features are included in the east?west asymmetry? Which processes are responsible for the differences between the two provinces (Kiel276 NAST-E & BATS NAST-W)?
2) How can the differences in particle flow (seasonal developments, magnitude of sedimentation events, composition) between the two stations be explained?
3) Are there differences in the composition of the particle flow between NAST-E (Kiel276) and NAST-W (BATS)? What are the origins of particles in the lithogenous fraction at BATS?
BEIBU, 03V01086, WTZ China: Status of the Beibu Gulf marine environment, South China Sea, and its development during the Holocene in the interplay between natural and anthropogenic factors. The general goal of the project is to provide an account of mesoscale to large-scale energy and matter flows of the Beibu Gulf as a response to natural and anthropogenic factors. The Beibu Gulf plays an important role in understanding the changes and deposition conditions in subrecent sediments and the relative contributions of matter input near the coast, the decomposition of organic material near the surface and element flows induced by it. In its Holocene sedimentation history, it reflects the interplay between southern oscillation, climate-induced oceanographic dynamics, sediment input and tectonic processes. To this is added an anthropogenic component stemming both from land use in the fluvial drainage basin and the coastal zones.
Member of the committee of the Briese Prize for marine sciences
Equal Opportunity Officer
You can only see the contact information of the academics in the database if you are a registered user of AcademiaNet.
Please register here
Please download the brochure "No more excuses" and read more about female experts in Europe, and about AcademiaNet.
Physical sciences, EnvironmentMineralogy, crystallography, mineral physics
Biological and related sciences , EnvironmentMicrobiology, biogeochemistry
EnvironmentHydrology, Hydrological Processes, Experimental Hydrology, Eco-Hydrology
EnvironmentEarth and the Terrestrial Planets: structure, history and models