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Using a Size-Spectrum Community Model to Simulate the Carbon Cost of Different Fishing Strategies: Why Size Matters
Falciani, Jonathan
Falciani, Jonathan
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Research project
Date
2021
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Biology
Mathematics
Mathematics
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http://dx.doi.org/10.34944/dspace/6710
Abstract
The net effect of carbon sequestration in deep sea sediments in response to phytoplankton blooms has been very well studied. Recently, researchers have started to view large marine species as analogous to terrestrial old growth forests, holding onto carbon stores between seasons and years and eventually the deep sea when they die. By removing heterotrophs from the marine environment through whaling or fishing, the net carbon in the community of organisms can decrease, adding to greenhouse gas emissions. Through mizer, a size-spectrum model, food chain interactions in response to different size-selective fishing strategies were simulated. The results suggest that fishing over a wider range of fish sizes to maintain a target yield can preserve more carbon within the community. This project introduces a novel ecosystem service that can be exploited through thoughtful fisheries management.
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