In this special issue of Science Advances, Quaade et al. (1) report that aquaculture (i.e., fish farming) production data are 'sparse, self-reported, and aggregated' and that this limits the effective understanding and monitoring of the industry’s trends and potential risks. The authors then build a manual survey of aquaculture production from remote sensing imagery. If aquaculture production data are sparse, then data on the amounts and types of subsidies provided to the sector are almost nonexistent.
By U. Rashid Sumaila
The underwater posidonia meadows are among the most productive marine ecosystems of the Mediterranean. They host more than 1300 species of fauna and flora, among them many fish of fishery importance. It releases valuable oxygen, and therefore limits the effects of climate change. Poseidon’s grass is precious, but under constant threat.
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