Marine faunal communities face numerous threats due to the combination of global climate change and local anthropogenic pressures, leading to changes in biodiversity. The loss of biodiversity impacts not only the structure of marine ecosystems but also influences ecosystem functioning. Food web research bridges the gap between research on ecosystem structure and functioning, by approaching the ecosystem as a network, connecting structural biotic components through feeding interactions (consumer-source) and energy flows. A range of properties can be derived from the food web structure and its flows, reflecting aspects of ecosystem functioning and stability. However, a wide application of this principle over space and time in the marine environment is hampered by the lack of available data. In this PhD project, I will compile the necessary data from different habitats (artificial and natural hard substrates) at the scale of the Belgian Part of the North Sea to investigate how anthropogenic impacts and habitat type affect food web structure, functioning, carbon flows and overall ecosystem stability. Overall, my PhD project aims to contribute to a better understanding of how anthropogenic impacts influence marine ecosystem functioning in a variety of habitats.