The shift of phosphorus transfers in global fisheries and aquaculture.

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ID: 83057
2020
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Abstract
Global fish production (capture and aquaculture) has increased quickly, which has altered global flows of phosphorus (P). Here we show that in 2016, [Formula: see text] Tg P yr (mean and interquartile range) was applied in aquaculture to increase fish production; while [Formula: see text] Tg P yr was removed from aquatic systems by fish harvesting. Between 1950 and 1986, P from fish production went from aquatic towards the land-human systems. This landward P peaked at 0.54 Tg P yr, representing a large but overlooked P flux that might benefit land activities under P scarcity. After 1986, the landward P flux decreased significantly, and became negative around 2004, meaning that humans spend more P to produce fish than harvest P in fish capture. An idealized pathway to return to the balanced anthropogenic P flow would require the mean phosphorus use efficiency (the ratio of harvested to input P) of aquaculture to be increased from a current value of 20% to at least 48% by 2050 - a big challenge.
Reference Key
huang2020thenature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Huang, Yuanyuan;Ciais, Phillipe;Goll, Daniel S;Sardans, Jordi;Peñuelas, Josep;Cresto-Aleina, Fabio;Zhang, Haicheng;
Journal Nature communications
Year 2020
DOI
10.1038/s41467-019-14242-7
URL
Keywords
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