Euphausiid assemblages of the oceanographically complex north-west marine bioregion of Australia

A study of the Ningaloo Coast, part of Australia's north-west marine bioregion, revealed that euphausiid assemblages are significantly influenced by depth and oceanographic factors such as seawater density, dissolved oxygen, fluorescence, and mesozooplankton abundance. The research identified 25 euphausiid species, including three new records for Australian waters, with Pseudeuphausia latifrons dominating shelf waters while Stylocheiron carinatum thrived in deeper waters where species richness was higher. Higher concentrations of euphausiids were observed off Ningaloo, potentially linked to the region's unique bathymetry and oceanographic conditions. This study underscores the importance of physical and biogeochemical properties, as well as food availability, in shaping euphausiid assemblage variation in the eastern Indian Ocean.

Sutton, A. L., & Beckley, L. E. (2017). Euphausiid assemblages of the oceanographically complex north-west marine bioregion of Australia. Marine and Freshwater Research, 68(11), 1988–1998. https://doi.org/10.1071/mf16334