The shift of phosphorus transfers in global fisheries and aquaculture.,Nature Communications

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The shift of phosphorus transfers in global fisheries and aquaculture.
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-17 , DOI: 10.1038/s41467-019-14242-7
Yuanyuan Huang _{1,

2} , Phillipe Ciais ₁ , Daniel S Goll _{1,

3} , Jordi Sardans _{4,

5} , Josep Peñuelas _{4,

5} , Fabio Cresto-Aleina ₁ , Haicheng Zhang _{1,

6}

Affiliation

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-1 (mean and interquartile range) was applied in aquaculture to increase fish production; while [Formula: see text] Tg P yr-1 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-1, 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.

中文翻译：

全球渔业和水产养殖中磷的转移趋势。

全球鱼类产量（捕获和水产养殖）增长迅速，这改变了全球磷的流量。在这里，我们表明，在2016年，[公式：参见文本] Tg P yr-1（平均数和四分位间距）被应用于水产养殖中以增加鱼类产量；而[公式：参见文本] Tg P yr-1是通过捕捞从水生系统中去除的。在1950年至1986年之间，鱼类生产中的磷从水生向土地-人类系统转移。该陆上磷峰值在0.54 Tg P yr-1处达到峰值，这代表了一个较大但被忽略的磷通量，这可能会使磷稀缺条件下的土地活动受益。1986年之后，陆上磷的通量显着下降，并在2004年左右变为负值，这意味着在捕捞鱼类方面，人类花在生产鱼类上的磷要多于收获磷。

更新日期：2020-01-17

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