Researchers have collected 50 years of data showing the deoxygenating cycles of a fjord on the coast of Vancouver Island, cataloging the response of the microbial communities inhabiting this environment. Marine oxygen minimum zones (OMZs) are widespread and contribute up to 7 percent of global oceans. Expansion of these OMZs has potential to bring oxygen-depleted water into new regions, affecting fish populations and nutrient cycles. Environments of low-oxygen are not well suited for most metazoans, but microbial life can flourish. As oxygen becomes limiting, microbial communities can change their metabolism to use alternative electron sources like nitrogen, carbon, and sulfur. These microbial communities can drive nutrient cycling essential for ecosystem function and diversity. The research team collected data using time-series monitoring and multi-omic sequencing (DNA, RNA, and protein) to study microbial responses to deoxygenated ocean areas. By using this data, reconstruction of microbial communities metabolism can predict future responses to ocean deoxygenating.