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Effects of spatial variability on the exposure of fish to hypoxia: a modeling analysis for the Gulf of Mexico


"The hypoxic zone in the northern Gulf of Mexico varies spatially (area, location) and temporally (onset, duration) on multiple scales. Exposure to hypoxic dissolved oxygen (DO) concentrations (< 2 mg L−1) is often lethal and exposure to 2 to 4 mg L−1 often causes the sublethal effects of decreased growth and fecundity on individuals of many fish species. We simulated the movement of individual fish within a high-resolution 3-D coupled hydrodynamic-water quality model (FVCOM-WASP) configured for the northern Gulf of Mexico to examine how spatial variability in DO concentrations would affect fish exposure to hypoxic and sublethal DO concentrations. [...]"

Source: Biogeosciences
Authors: Elizabeth D. LaBone et al.
DOI: 10.5194/bg-2020-51

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