USAP-DC

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EAGER: Collaborative Research: Acoustic Ecology of Foraging Antarctic Blue Whales in the Vicinity of Antarctic Krill Short Title: Acoustic ecology of Antarctic blue whales Start Date: 2018-10-01 End Date: 2021-09-30 Description/Abstract In austral summer 2019, a 48 day, multi-country, interdisciplinary research voyage mapped Antarctic krill (Euphausia superba) and baleen whale, blue whale (Balaenoptera musculus) and fin whale (B. physalus) distributions in particular off East Antarctica. We detected, tracked and localized blue whales and mapped prey fields in the vicinity of a fixed acoustic mooring that combined passive and active acoustics for collection of concurrent predator and prey data. By coupling moored data collection with the ship-based survey focusing on Antarctic blue whale behaviour and krill dynamics, we investigated the dynamics of blue whales and their prey. We found that the production of social calls, D calls of blue whales and 40 Hz calls of fin whales, was correlated with the krill biomass over a week-long period. Personnel Person Role Sirovic, Ana Investigator and contact Wood, Megan Other Stafford, Kathleen Co-Investigator Funding Antarctic Organisms and Ecosystems Award # 1746148 AMD - DIF Record(s) USAP-1746148_1 Data Management Plan None in the Database Product Level: 0 (raw data) Datasets Repository Title (link) Format(s) Status USAP-DC Passive acoustic recording metadata from East Antarctica, Feb 2019 Excel exists Keywords ACOUSTIC SCATTERING Amd/Us ARTHROPODS East Antarctica MAMMALS PELAGIC SPECIES/POPULATION INTERACTIONS Platforms and Instruments FIELD SURVEYS