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Virginia B. Mcrostie - One of the best experts on this subject based on the ideXlab platform.
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‘White Gold’ guano fertilizer drove agricultural intensification in the Atacama Desert from ad 1000
Nature Plants, 2021Co-Authors: Francisca Santana-sagredo, Claudio Latorre, Rick J. Schulting, Pablo Méndez-quiros, Ale Vidal-elgueta, Mauricio Uribe, Rodrigo Loyola, Anahí Maturana-fernández, Francisca P. Díaz, Virginia B. McrostieAbstract:The source of pre-Inca agriculture in the Atacama Desert of Chile has been the subject of multiple theories, but this Article uses preserved maize remains to deduce that coastal guano deposits were utilized in an impressive display of social and ecological sophistication. The archaeological record shows that large pre-Inca agricultural systems supported settlements for centuries around the ravines and oases of northern Chile’s hyperarid Atacama Desert. This raises questions about how such productivity was achieved and sustained, and its social implications. Using isotopic data of well-preserved ancient plant remains from Atacama sites, we show a dramatic increase in crop nitrogen isotope values (δ^15N) from around ad 1000. Maize was most affected, with δ^15N values as high as +30‰, and human bone collagen following a similar trend; moreover, their carbon isotope values (δ^13C) indicate a considerable increase in the consumption of maize at the same time. We attribute the shift to extremely high δ^15N values—the highest in the world for archaeological plants—to the use of seabird guano to fertilize crops. Guano—‘White Gold’ as it came to be called—thus sustained agricultural intensification, supporting a substantial population in an otherwise extreme environment.
Francisca Santana-sagredo - One of the best experts on this subject based on the ideXlab platform.
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‘White Gold’ guano fertilizer drove agricultural intensification in the Atacama Desert from ad 1000
Nature Plants, 2021Co-Authors: Francisca Santana-sagredo, Claudio Latorre, Rick J. Schulting, Pablo Méndez-quiros, Ale Vidal-elgueta, Mauricio Uribe, Rodrigo Loyola, Anahí Maturana-fernández, Francisca P. Díaz, Virginia B. McrostieAbstract:The source of pre-Inca agriculture in the Atacama Desert of Chile has been the subject of multiple theories, but this Article uses preserved maize remains to deduce that coastal guano deposits were utilized in an impressive display of social and ecological sophistication. The archaeological record shows that large pre-Inca agricultural systems supported settlements for centuries around the ravines and oases of northern Chile’s hyperarid Atacama Desert. This raises questions about how such productivity was achieved and sustained, and its social implications. Using isotopic data of well-preserved ancient plant remains from Atacama sites, we show a dramatic increase in crop nitrogen isotope values (δ^15N) from around ad 1000. Maize was most affected, with δ^15N values as high as +30‰, and human bone collagen following a similar trend; moreover, their carbon isotope values (δ^13C) indicate a considerable increase in the consumption of maize at the same time. We attribute the shift to extremely high δ^15N values—the highest in the world for archaeological plants—to the use of seabird guano to fertilize crops. Guano—‘White Gold’ as it came to be called—thus sustained agricultural intensification, supporting a substantial population in an otherwise extreme environment.
Claudio Latorre - One of the best experts on this subject based on the ideXlab platform.
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‘White Gold’ guano fertilizer drove agricultural intensification in the Atacama Desert from ad 1000
Nature Plants, 2021Co-Authors: Francisca Santana-sagredo, Claudio Latorre, Rick J. Schulting, Pablo Méndez-quiros, Ale Vidal-elgueta, Mauricio Uribe, Rodrigo Loyola, Anahí Maturana-fernández, Francisca P. Díaz, Virginia B. McrostieAbstract:The source of pre-Inca agriculture in the Atacama Desert of Chile has been the subject of multiple theories, but this Article uses preserved maize remains to deduce that coastal guano deposits were utilized in an impressive display of social and ecological sophistication. The archaeological record shows that large pre-Inca agricultural systems supported settlements for centuries around the ravines and oases of northern Chile’s hyperarid Atacama Desert. This raises questions about how such productivity was achieved and sustained, and its social implications. Using isotopic data of well-preserved ancient plant remains from Atacama sites, we show a dramatic increase in crop nitrogen isotope values (δ^15N) from around ad 1000. Maize was most affected, with δ^15N values as high as +30‰, and human bone collagen following a similar trend; moreover, their carbon isotope values (δ^13C) indicate a considerable increase in the consumption of maize at the same time. We attribute the shift to extremely high δ^15N values—the highest in the world for archaeological plants—to the use of seabird guano to fertilize crops. Guano—‘White Gold’ as it came to be called—thus sustained agricultural intensification, supporting a substantial population in an otherwise extreme environment.
Mauricio Uribe - One of the best experts on this subject based on the ideXlab platform.
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‘White Gold’ guano fertilizer drove agricultural intensification in the Atacama Desert from ad 1000
Nature Plants, 2021Co-Authors: Francisca Santana-sagredo, Claudio Latorre, Rick J. Schulting, Pablo Méndez-quiros, Ale Vidal-elgueta, Mauricio Uribe, Rodrigo Loyola, Anahí Maturana-fernández, Francisca P. Díaz, Virginia B. McrostieAbstract:The source of pre-Inca agriculture in the Atacama Desert of Chile has been the subject of multiple theories, but this Article uses preserved maize remains to deduce that coastal guano deposits were utilized in an impressive display of social and ecological sophistication. The archaeological record shows that large pre-Inca agricultural systems supported settlements for centuries around the ravines and oases of northern Chile’s hyperarid Atacama Desert. This raises questions about how such productivity was achieved and sustained, and its social implications. Using isotopic data of well-preserved ancient plant remains from Atacama sites, we show a dramatic increase in crop nitrogen isotope values (δ^15N) from around ad 1000. Maize was most affected, with δ^15N values as high as +30‰, and human bone collagen following a similar trend; moreover, their carbon isotope values (δ^13C) indicate a considerable increase in the consumption of maize at the same time. We attribute the shift to extremely high δ^15N values—the highest in the world for archaeological plants—to the use of seabird guano to fertilize crops. Guano—‘White Gold’ as it came to be called—thus sustained agricultural intensification, supporting a substantial population in an otherwise extreme environment.
Rodrigo Loyola - One of the best experts on this subject based on the ideXlab platform.
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‘White Gold’ guano fertilizer drove agricultural intensification in the Atacama Desert from ad 1000
Nature Plants, 2021Co-Authors: Francisca Santana-sagredo, Claudio Latorre, Rick J. Schulting, Pablo Méndez-quiros, Ale Vidal-elgueta, Mauricio Uribe, Rodrigo Loyola, Anahí Maturana-fernández, Francisca P. Díaz, Virginia B. McrostieAbstract:The source of pre-Inca agriculture in the Atacama Desert of Chile has been the subject of multiple theories, but this Article uses preserved maize remains to deduce that coastal guano deposits were utilized in an impressive display of social and ecological sophistication. The archaeological record shows that large pre-Inca agricultural systems supported settlements for centuries around the ravines and oases of northern Chile’s hyperarid Atacama Desert. This raises questions about how such productivity was achieved and sustained, and its social implications. Using isotopic data of well-preserved ancient plant remains from Atacama sites, we show a dramatic increase in crop nitrogen isotope values (δ^15N) from around ad 1000. Maize was most affected, with δ^15N values as high as +30‰, and human bone collagen following a similar trend; moreover, their carbon isotope values (δ^13C) indicate a considerable increase in the consumption of maize at the same time. We attribute the shift to extremely high δ^15N values—the highest in the world for archaeological plants—to the use of seabird guano to fertilize crops. Guano—‘White Gold’ as it came to be called—thus sustained agricultural intensification, supporting a substantial population in an otherwise extreme environment.
