Model output of the effects of spatial variability on the exposure of fish to hypoxia
|Author(s)||Labone Elizabeth1, Rose Kenneth2, Justic Dubravko1, Huang Haosheng1, Wang Lixia1|
|Affiliation(s)||1 : Louisiana State University
2 : University of Maryland Center for Environmental Science
|Keyword(s)||Gulf of Mexico, Model, Atlantic Croaker, movement|
The 18 NetCDF files are the result of simulating 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. Eight static snapshots (spatial maps) of DO were selected from a 10 day FVCOM-WASP simulation that showed a range of spatial variation (degree of clumpiness) in sublethal DO area from moderate total sublethal area (4 maps) to high total sublethal area (4 maps). An additional case of allowing DO to vary in time (dynamic DO) was also included. All simulations were for 10 days and were performed for 2-D (bottom layer only) maps. Fish movement was simulated every 15 minutes using one of three algorithms designed for avoiding low DO exposure and a default algorithm not dependent on DO conditions. Fish were assumed to have either good or poor avoidance competencies.