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VIMS Articles

2017

Atlantic Bluefin Tuna; Line Simulation Characteristics; System Temperature-Changes; Eastern Pacific-Ocean; Archival Tag Data; Yellowfin Tuna; Thunnus-Albacares; Minimum Zones; Katsuwonus-Pelamis; Pelagic Fishes

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Full-Text Articles in Life Sciences

Projections Of Climate-Driven Changes In Tuna Vertical Habitat Based On Species-Specific Differences In Blood Oxygen Affinity, Kas Mislan, Ca Deutsch, Richard Brill, Jp Dunne, Jl Sarmiento Jan 2017

Projections Of Climate-Driven Changes In Tuna Vertical Habitat Based On Species-Specific Differences In Blood Oxygen Affinity, Kas Mislan, Ca Deutsch, Richard Brill, Jp Dunne, Jl Sarmiento

VIMS Articles

Oxygen concentrations are hypothesized to decrease in many areas of the ocean as a result of anthropogenically driven climate change, resulting in habitat compression for pelagic animals. The oxygen partial pressure, pO(2), at which blood is 50% saturated (P-50) is a measure of blood oxygen affinity and a gauge of the tolerance of animals for low ambient oxygen. Tuna species display a wide range of blood oxygen affinities (i.e., P-50 values) and therefore may be differentially impacted by habitat compression as they make extensive vertical movements to forage on subdaily time scales. To project the effects of end-of-the-century climate change …