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To understand environmental fluctuations that may be outside the normal range of variation, we need long-term datasets. Currently, our oceans are facing significant changes (e.g. increased human activities, climate change and ocean acidification) which may alter the functioning of our ecosystems. However, for many of these changes, we do not possess sufficient information to characterize their baseline state. This research program will characterize the temporal and spatial environmental variables responsible for spatio-temporal patterns of large fish and invertebrate species using a seafloor cabled-observatory time-lapse camera as well as video surveys of the surrounding area. Particular focus will be given to monitoring responses to the spring phytoplankton bloom to understand how changes in the timing of this event, an expected impact from climate change, may affect seafloor communities, including the economically important snow crab. Collaborations with Fisheries and Ocean Canada (DFO), and Ocean Network Canada (ONC) researchers will ensure that research results improve our ability to understand shifting ecosystems and can be disseminated broadly. Early detection of change will be key and by understanding the mechanisms driving species responses to environmental change, this research program will enable us to assess ecosystem resilience and predict how current trends may affect Canadian sub-Arctic communities.

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