Widening the analysis of Energy Return On Investment (EROI) in agroecosystems: A proposal to study socio-ecological transitions to industrialized farm systems (the Vallès County, Catalonia, c.1860 and 1999)

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/100439

dc.contributor	Universitat Politècnica de Catalunya. Departament de Matemàtiques
dc.contributor	Universitat Politècnica de Catalunya. DCCG - Grup de recerca en geometria computacional, combinatoria i discreta
dc.contributor.author	Galán, E.
dc.contributor.author	Padró, R.
dc.contributor.author	Marco, I.
dc.contributor.author	Tello Aragay, Enric
dc.contributor.author	Cunfer, G.
dc.contributor.author	Guzmán, G. I.
dc.contributor.author	González de Molina, M.
dc.contributor.author	Krausmann, F.
dc.contributor.author	Gingrich, S.
dc.contributor.author	Sacristán Adinolfi, Vera
dc.contributor.author	Moreno-Delgado, D.
dc.date	2016
dc.identifier.citation	Galán, E., Padró, R., Marco, I., Tello, E., Cunfer, G., Guzmán, G., González de Molina, M., Krausmann, F., Gingrich, S., Sacristán, V., Moreno-Delgado, D. Widening the analysis of Energy Return On Investment (EROI) in agroecosystems: A proposal to study socio-ecological transitions to industrialized farm systems (the Vallès County, Catalonia, c.1860 and 1999). "Ecological modelling", 2016, vol. 336, p. 13-25.
dc.identifier.citation	0304-3800
dc.identifier.citation	10.1016/j.ecolmodel.2016.05.012
dc.identifier.uri	http://hdl.handle.net/2117/100439
dc.language.iso	eng
dc.relation	http://www.sciencedirect.com/science/article/pii/S0304380016301922
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Programació matemàtica
dc.subject	Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Simulació
dc.subject	Programming (Mathematics)
dc.subject	Operations research
dc.subject	Energy Return on Investment (EROI)
dc.subject	Agro-ecosystems
dc.subject	Integrated land use management
dc.subject	Socio-ecological systems
dc.subject	Catalonia
dc.subject	Programació (Matemàtica)
dc.subject	Simulació, Mètodes de
dc.subject	90C Mathematical programming
dc.subject	Classificació AMS::90 Operations research, mathematical programming::90B Operations research and management science
dc.title	Widening the analysis of Energy Return On Investment (EROI) in agroecosystems: A proposal to study socio-ecological transitions to industrialized farm systems (the Vallès County, Catalonia, c.1860 and 1999)
dc.type	info:eu-repo/semantics/submittedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Energy balances of farm systems have overlooked the role of energy flows that remain within agro-ecosystems. Yet, such internal flows fulfil important socio-ecological functions, including maintenance of farmers themselves and agro-ecosystem structures. Farming can either give rise to complex landscapes that favour associated biodiversity, or the opposite. This variability can be understood by assessing several types of Energy Returns on Investment (EROI). Applying these measures to a farm system in Catalonia, Spain in 1860 and in 1999, reveals the expected decrease in the ratio of final energy output to total and external inputs. The transition from solar-based to a fossil fuel based agro-ecosystem was further accompanied by an increase in the ratio of final energy output to biomass reused, as well as an absolute increase of Unharvested Phytomass grown in derelict forestland. The study reveals an apparent link between reuse of biomass and the decrease of landscape heterogeneity along with its associated biodiversity.
dc.description.abstract	Peer Reviewed

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