Williams also raised the issue of using aquatic resources as livestock and aquaculture feed, crop fertilizer, and food and nonfood additives. The critical question to ask of lower-priced uses is whether a greater contribution could be made by using the resources more directly for human food. Over the next 25 years, the challenge will be to maintain present or near-present levels of natural harvests while sustainably increasing aquaculture production, said Williams. The next few transition decades pose a host of uncertainties for users of fisheries, consumers, and management institutions. It is also a time of opportunities, when even small actions could have important effects.
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