Pelagic longlines and albatross in the southern Indian Ocean : interactions of fleet dynamics, climate change, and albatross ...

• Main Author: Michael, PE
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Indian; Southern Ocean
• Online Access: https://dx.doi.org/10.25959/23239385.v1; https://figshare.utas.edu.au/articles/thesis/Pelagic_longlines_and_albatross_in_the_southern_Indian_Ocean_interactions_of_fleet_dynamics_climate_change_and_albatross/23239385/1

The greater Southern Ocean is vast, valuable, and vulnerable. Land masses are few and intense atmospheric and oceanographic conditions create a mosaic of logistical challenges for access. The Southern Ocean is home to unique species, including all but three of the world's albatross species and high value tunas targeted by distant-water pelagic longline fleets from multiple flagstates. Exploitation of tunas has contributed to some stocks being over-fished while indirect exploitation, through incidental bycatch, has severely impacted many albatross colonies. The impacts of climate change will further complicate the current interactions within the Southern Ocean, including those between fish, fishers, and albatross. This thesis predicts the potential future for Southern Ocean tuna, fishers, and albatross, focusing on the Indian Ocean sector of the Southern Ocean, with some analyses in the Atlantic sector as well. The first chapter introduces the Southern Ocean, major tuna fisheries, their interactions with ...