Comment by dogcomplex

I know you focus on terrestrial carbon, but what are your thoughts (if any) on sequestration via ocean kelp farming? It appears to beat out forests at rate of growth / drawdown, and there's quite a lot of "unused" area to establish. Like regrowing terrestrial forests, there are many known benefits to local ecosystems from kelp forests - which hopefully can balance out the relative unknowns of mass growth. Nutrient feeding via upwelling in deeper oceans seems viable to feed even very large operations, though I personally don't know what impacts redirecting those nutrient flows might have and I'm not sure anyone does (though I'm inclined to say that shouldn't be a dealbreaker). From what I've seen of the economics, if the crop is harvested (around 10%) for fuel and plastic manufacturing a sequestration farm can be self-sustaining financially.