Willem Stock

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Over the past century anthropogenic activities have dramatically increased the amount of reactive nitrogen on Earth. It has been estimated that nitrogen inputs have increased as much as ten-fold in coastal ecosystems. As a result, these, often nitrogen-limited areas have experienced severe consequences of eutrophication, such as anoxia and changes in community structure. Denitrification is therefore a key process in the nitrogen cycle as it decreases the amount of reactive nitrogen available in these ecosystems.

My aim is to study the aims to study the effects of biotic and abiotic interactions on denitrification rates in marine sediments. More specifically, I aim to unravel the role of interactions among different players of the small-size classes (meiofauna and microphytobenthos) for the removal of nitrogen from marine sediments.