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The challenge marine scientists face lies in navigating the enigmatic qualities of the ocean, its ever-shifting dynamics, and its inherent unpredictability, particularly in the context of rapid changes in our climate. It is of utmost significance to document how the ocean reacts to environmental shifts so that we can monitor and assess the effects of both natural and human-induced influences. I employ stable isotopic techniques to trace environmental processes and quantify the metabolic rates of marine phytoplankton. Furthermore, delving into the microscopic analysis of metabolic rates at the cellular level is essential for closely identifying the key contributors to the carbon and nitrogen cycling within aquatic ecosystems.

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                  Key research interests

1.  Nitrogen and carbon cycling in aquatic ecosystems.

2.  Stable isotope techniques (N and C).

3.  Isotopic food web in the aquatic and terrestrial environments.

4.  Impacts of climate change on the phytoplankton, primary production,    and N2 fixation.

5.  Anthropogenic influence on coastal and estuarine ecosystems.

6.  Cell-specific N2 fixation and symbiotic relationships of diatoms and diazotrophs.