Evaluation of historical multivariate datasets to identify changes in biodiversity, species distribution, behaviour, abundance, and interaction in response to environmental forcing in a marine ecosystem


Fisheries acoustic survey representing a series of fish schools distributed along the ocean floor as displayed from a scientific echo sounder; vertical axis is depth from the surface (approximately 150 m), horizontal axis is distance travelled (approximately 2 nautical miles).

Historical data from fisheries acoustic surveys for the La Perouse area off Vancouver Island can be used to measure change over time in marine species characteristics (such as behaviour, abundance, and habitat). Combining and analysing acoustic, biological, and oceanographic data will provide new information on this ecosystem, maps of habitat use, indications of how environmental changes are affecting species health, and inform protocols for effective ecosystem monitoring. These new products will be used to assess the impact of natural changes and human activity on ecosystems.

Program Name

Strategic Program for Ecosystem-based Research and Advice (SPERA)


Pacific: Vancouver Island West Coast

Principal Investigator(s)

Stéphane Gauthier

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