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Methane emissions from seagrass meadows in the Mediterranean Sea

May 15, 2023, 13:15 Uhr
MARUM Seminar
MARUM Seminar room 2070

Sina Schorn

Max Planck Institute for Marine Microbiology

Seagrasses are among the most productive ecosystems on Earth that play a crucial role in mitigating greenhouse gas emissions by storing large amounts of atmospheric carbon dioxide in their sediments. However, seagrasses are also natural sources of methane that might offset carbon dioxide uptake. As part of my PhD, I investigated the microbiology and biogeochemistry behind methane emissions from Posidonia seagrass meadows.

Posidonia oceanica seagrasses are widely distributed throughout the Mediterranean Sea and are known for their large size and ability to form massive underground peat deposits. During my talk, I will focus on the microorganisms and their metabolic activity involved in the production and consumption of methane and how their activity impacts natural methane emissions from these ecosystems. Our study demonstrates a direct link between microbial methane production and the presence of seagrasses and furthermore highlights the potential impact of the loss of these important ecosystems on methane emissions and greenhouse gas offsets in the future.

Sina Schorn, Photo: Latest Thinking/Sebastian Neumann
Sina Schorn, Photo: Latest Thinking/Sebastian Neumann