Forecasting potential global environmental costs of livestock production 2000-2050

Nathan Pelletier, Peter Tyedmers

Research output: Contribution to journalArticlepeer-review

285 Citations (Scopus)

Abstract

Food systems - in particular, livestock production - are key drivers of environmental change. Here, we compare the contributions of the global livestock sector in 2000 with estimated contributions of this sector in 2050 to three important environmental concerns: climate change, reactive nitrogen mobilization, and appropriation of plant biomass at planetary scales. Because environmental sustainability ultimately requires that human activities as a whole respect critical thresholds in each of these domains, we quantify the extent to which current and future livestock production contributes to published estimates of sustainability thresholds at projected production levels and under several alternative endpoint scenarios intended to illustrate the potential range of impacts associated with dietary choice.Wesuggest that, by 2050, the livestock sector alone may either occupy the majority of, or significantly overshoot, recently published estimates of humanity's "safe operating space" in each of these domains. In light of the magnitude of estimated impacts relative to these proposed (albeit uncertain) sustainability boundary conditions, we suggest that reining in growth of this sector should be prioritized in environmental governance.

Original languageEnglish
Pages (from-to)18371-18374
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number43
DOIs
Publication statusPublished - Oct 26 2010

ASJC Scopus Subject Areas

  • General

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

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