The shift of phosphorus transfers in global fisheries and aquaculture
Huang, Yuanyuan (Laboratoire des Sciences du Climat et de l'Environnement)
Ciais, Philippe (Laboratoire des Sciences du Climat et de l'Environnement)
Goll, Daniel. (Laboratoire des Sciences du Climat et de l'Environnement)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Cresto-Aleina, Fabio (Laboratoire des Sciences du Climat et de l'Environnement)
Zhang, Haicheng (Laboratoire des Sciences du Climat et de l'Environnement)

Date:	2020
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-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.
Grants:	European Commission 610028
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Biogeochemistry ; Ecology ; Element cycles ; Environmental sciences
Published in:	Nature communications, Vol. 11, issue 1 (2020) , art. 335, ISSN 2041-1723

DOI: 10.1038/s41467-019-14242-7
PMID: 31953430

10 p, 1.7 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Articles > Research articles
Articles > Published articles