| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Eating up the world's food web and the human trophic level
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| Autores: |
Bonhommeau, Sylvain
Dubroca, Laurent
Le Pape, Olivier
Barde, Julien
Kaplan, David
Chassot, Emmanuel
Nieblas, Anne-elise
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| Data: |
2013-12
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| Ano: |
2013
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| Palavras-chave: |
Human ecology
Nutrition transition
Trophic ecology
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| Resumo: |
Trophic levels are critical for synthesizing species' diets, depicting energy pathways, understanding food web dynamics and ecosystem functioning, and monitoring ecosystem health. Specifically, trophic levels describe the position of species in a food web, from primary producers to apex predators (range, 1-5). Small differences in trophic level can reflect large differences in diet. Although trophic levels are among the most basic information collected for animals in ecosystems, a human trophic level (HTL) has never been defined. Here, we find a global HTL of 2.21, i.e., the trophic level of anchoveta. This value has increased with time, consistent with the global trend toward diets higher in meat. National HTLs ranging between 2.04 and 2.57 reflect a broad diversity of diet, although cluster analysis of countries with similar dietary trends reveals only five major groups. We find significant links between socio-economic and environmental indicators and global dietary trends. We demonstrate that the HTL is a synthetic index to monitor human diets and provides a baseline to compare diets between countries.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00171/28190/26609.pdf
DOI:10.1073/pnas.1305827110
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| Editor: |
Natl Acad Sciences
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| Relação: |
http://archimer.ifremer.fr/doc/00171/28190/
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| Formato: |
application/pdf
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| Fonte: |
Proceedings Of The National Academy Of Sciences Of The United States Of America (0027-8424) (Natl Acad Sciences), 2013-12 , Vol. 110 , N. 51 , P. 20617-20620
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| Direitos: |
2014 National Academy of Sciences.
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