onr:"swepub:oai:DiVA.org:liu-171190"
Search: onr:"swepub:oai:DiVA.org:liu-171190" > The US consumer pho...
- 1 of 1
- Previous record
- Next record
- To hitlist
The US consumer phosphorus footprint: where do nitrogen and phosphorus diverge?
-
- Metson, Genevieve (author)
- Linköpings universitet,Teoretisk Biologi,Tekniska fakulteten,Natl Acad Sci, DC 20418 USA; US EPA, OR 97333 USA; Washington State Univ, WA 98686 USA
-
- MacDonald, Graham K. (author)
- McGill Univ, Canada
-
- Leach, Allison M. (author)
- Univ New Hampshire, NH 03824 USA
- show more...
- show less...
- (creator_code:org_t)
- 2020-10-13
- 2020
- English.
- In: Environmental Research Letters. - : IOP PUBLISHING LTD. - 1748-9326. ; 15:10
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Phosphorus (P) and nitrogen (N) are essential nutrients for food production but their excess use in agriculture can have major social costs, particularly related to water quality degradation. Nutrient footprint approaches estimate N and P release to the environment through food production and waste management and enable linking these emissions to particular consumption patterns. Following an established method for quantifying a consumer-oriented N footprint for the United States (U.S.), we calculate an analogous P footprint and assess the N:P ratio across different stages of food production and consumption. Circa 2012, the average consumers P footprint was 4.4 kg P capita(-1) yr(-1) compared to 22.4 kg N capita(-1) yr(-1) for the food portion of the N footprint. Animal products have the largest contribution to both footprints, comprising >70% of the average per capita N and P footprints. The N:P ratio of environmental release based on virtual nutrient factors (kilograms N or P per kilogram of food consumed) varies considerably across food groups and stages. The overall N:P ratio of the footprints was lower (5.2 by mass) than for that of U.S. food consumption (8.6), reinforcing our finding that P is managed less efficiently than N in food production systems but more efficiently removed from wastewater. While strategies like reducing meat consumption will effectively reduce both N and P footprints by decreasing overall synthetic fertilizer nutrient demands, consideration of how food production and waste treatment differentially affect N and P releases to the environment can also inform eutrophication management.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- sustainability; biogeochemistry; stoichiometry; nutrients; agriculture; food
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Environmental Research Letters (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Metson, Geneviev ...
- MacDonald, Graha ...
- Leach, Allison M ...
- Compton, Jana E.
- Harrison, John A ...
- Galloway, James ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Earth and Relate ...
- and Environmental Sc ...
- Articles in the publication
- Environmental Re ...
- By the university
- Linköping University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
