CHECK YOUR UNDERSTANDING
Why might aquaculture be considered the “future of fishing?”
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Why might bottom-trawling fishing techniques make it harder for the cod population to recover even after the ships have left the area?
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In what way is the RAS waste-treatment plan an example of biomimicry?
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The collapse of the cod fishery is a tragedy of the commons because:
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A disadvantage of net pen operations is:
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"Fishing down the food chain" refers to:
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WORK WITH IDEAS
Why do we define a fishery in terms of human use? Does that diminish it as an ecological concept?
Ecosystems like those found in the extreme environment of the Arctic have simple food webs, with only a few organisms at each trophic level, whereas ecosystems with more moderate climates have more robust food webs with many species. Why is a simple food web more vulnerable to collapse than a more complex one?
What are the advantages of RAS like the one Yonathan Zohar is developing and where (in what nations or regions) will they likely be adopted? If adopted in these areas, will they help lower the impact of eating fish? Explain.
Consider the triple bottom line and propose (based on current technology) a low-impact way for people in developing nations to meet their need for fish.