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Assessment of phytoplankton resources suitable for bigheaded carps in Lake Michigan derived from remote sensing and bioenergetics-Figures

Summary

We used bioenergetic simulations combined with satellite-measured water temperature and estimates of algal food availability to predict the habitat suitability of Lake Michigan for adult silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis). Depending on water temperature, we found that bigheaded carp require ambient algal concentrations between 1 and 7 μg hlorophyll/L or between 0.25 × 105 and 1.20 × 105 cells/mL Microcystis to maintain body weight.When the bioenergetics model is forced with the observed average annual temperature cycle, our simulations predicted silver carp bioenergetics predicted annual weight change ranging from 9% weight loss to 23% gain; bighead carp ranged from 68 to 177% weight gain. Algal [...]

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Figure5.tif
“June-Oct 2009-2011 Average Chlorophyl”
24.08 MB image/geotiff
Figure6.tif
“June-Oct 2009-2001 Average Cyanobacteria Concentrations”
24.08 MB image/geotiff

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  • Columbia Environmental Research Center (CERC)

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