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Denkenberger comments on Saving expected lives at $10 apiece? - Effective Altruism Forum

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Comment author: Denkenberger 16 December 2016 07:51:18PM 2 points [-]

Ocean fertilization is another alternative food that might be economical right now, though only with the correct property rights as you point out. In areas of the ocean with low nutrients, many trophic levels including zooplankton are required to get to fish. However, where we fertilize, we could go directly from algae to fish (as happens for natural upwelling). So if you are worried about "insect" (actually arthropod) suffering, ocean fertilization could be better than existing ocean ecosystems (I have made this point to Brian, but it did not end up in his essay).

Comment author: Brian_Tomasik 02 January 2017 10:21:25AM 0 points [-]

Interesting. :) Do you have further reading on this point?

It seems that increased phytoplankton in lakes and rivers generally leads to more zooplankton. Do you think the dynamics are different in the oceans? I have a hard time believing that herbivorous fish could not only eat all the extra phytoplankton from fertilization but even some of the phytoplankton that was present pre-fertilization (which is what's necessary to reduce zooplankton populations relative to pre-fertilization levels), but I could be wrong!

Comment author: Denkenberger 03 January 2017 02:58:29AM 1 point [-]

Thanks for the information on freshwater systems. I believe the quote about saltwater systems was in this book.