Moritz Holtappels

Dr. Moritz Holtappels is a Senior Scientist (Research Fellow) at the Alfred Wegener Institute (AWI), Helmholtz Centre for Polar and Marine Research, affiliated with the Biology department in Bremerhaven, Germany. He has held this position since 2016, following roles as a Scientist and PostDoc at the Max Planck Institute for Marine Microbiology. His research specializes in benthic ecology, with a focus on biogeochemical processes in marine sediments.

Education:

• PhD in Geosciences, University of Bremen (2006–2009)
• Diploma in Marine Biology, University of Rostock (2001–2004)

Research Focus: Dr. Holtappels investigates sediment-water interface dynamics, particularly in permeable coastal systems. Key areas include:

• Nitrogen and carbon cycling under variable redox conditions
• Iron-phosphorus interactions influencing organic matter retention
• Impacts of bottom trawling on sediment carbon storage
• Mechanisms of dissolved organic matter transport in oceanic systems

His work combines field observations, laboratory experiments, and advanced analytical techniques to address global carbon cycle questions.

Publications: With 116 publications, his recent studies (2023–2024) highlight:

• Down-slope carbon transport in the North Atlantic
• Anthropogenic disruption of sediment carbon sinks
• Iron-mediated terrigenous organic matter retention
• Redox-driven nutrient cycling in sandy sediments

These contribute to understanding coastal resilience and climate feedback mechanisms.