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Impacts of feeding less food-competing feedstuffs to livestock on global food system sustainability 21
Schader, Christian; Müller, Adrian; El-Hage Scialabba, Nadia; Hecht, Judith; Isensee, Anne; Erb, Karl-Heinz; Smith, Pete; Makkar, Harinder P.S.; Klocke, Peter; Leiber, Florian; Schwegler, Patrizia; Stolze, Matthias; Niggli, Urs.
Increasing efficiency in livestock production and reducing the share of animal products in human consumption are two strategies to curb the adverse environmental impacts of the livestock sector. Here,we explore the roomfor sustainable livestock production by modelling the impacts and constraints of a third strategy in which livestock feed components that compete with direct human food crop production are reduced. Thus, in the outmost scenario, animals are fed only from grassland and by-products from food production. We show that this strategy could provide sufficient food (equal amounts of human-digestible energy and a similar protein/calorie ratio as in the reference scenario for 2050) and reduce environmental impacts comparedwith the reference scenario...
Tipo: Journal paper Palavras-chave: Feeding and growth Recycling; Balancing and resource management.
Ano: 2015 URL: http://orgprints.org/29549/1/Schader-etal-2015-Food-Competing-Feedstuffs-JRS-p1-12.pdf
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Exploring the biophysical option space for feeding the world without deforestation 21
Erb, Karl-Heinz; Lauk, Christian; Kastner, Thomas; Mayer, Andreas; Theurl, Michaela C.; Haberl, Helmut.
Safeguarding the world’s remaining forests is a high priority goal. We assess the biophysical option space for feeding the world in 2050 in a hypothetical zero deforestation world. We systematically combine realistic assumptions on future yields, agricultural areas, livestock feed and human diets. For each scenario, we determine whether the supply of crop products meets the demand and whether the grazing intensity stays within plausible limits. We find that many options exist to meet the global food supply in 2050 without deforestation, even at low crop-yield levels. Within the option space, individual scenarios differ greatly in terms of biomass harvest, cropland demand and grazing intensity, depending primarily on the quantitative and qualitative aspects...
Tipo: Journal paper Palavras-chave: Community development "Organics" in general Recycling; Balancing and resource management Biodiversity and ecosystem services.
Ano: 2016 URL: http://orgprints.org/30058/1/erb-etal-2016-NatureCommunication-7-11382-p1-9.pdf
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