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Food supply system dynamics in the Galapagos Islands: agriculture, livestock and imports

  • Carolina Sampedro (a1), Francesco Pizzitutti (a2), Diego Quiroga (a1) (a2) (a3), Stephen J. Walsh (a2) (a4) and Carlos F. Mena (a1) (a2) (a3)...


Like many other oceanic islands around the globe, environmental conditions, social circumstances and forces of globalization combine to challenge the sustainability of the Galapagos Archipelago of Ecuador. This paper describes a food-supply system in Galapagos that is mainly controlled by population growth, weak local agriculture, imports from mainland Ecuador and the influence of a growing tourism industry. We use system dynamics (SD) as a modeling technique in this paper to identify the main driving forces operating on the Galapagos food system to create a series of future scenarios and to examine the subsequent implications across the supply system structures. We model the supply side of the food system using secondary data collected from governmental and non-governmental sources. We find that the consumption profile of the local inhabitants of the Galapagos is on average higher than consumption in the Ecuadorian mainland. This fact, plus rapid growth of the local population fueled by the tourism industry, has created a decrease in per capita local food production and an increase on food import dependence that now, challenges the sustainability of the archipelago. Imports are the largest source of food in the archipelago. Approximately 75% of the agricultural food supply was transported from the mainland in 2017. Our model projects that this fraction will increase to 95% by 2037 with no changes in food policy. Moreover, any plan to increase tourism arrivals must be accompanied by a plan to address the subsistence needs of the new population that the tourism industry attracts. Policies to promote local agricultural growth should be central to the development strategy implemented in the Galapagos.


Corresponding author

Author for correspondence: Carlos F. Mena, E-mail:


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Abdullah, FA and Samah, BA (2013) Factors impinging farmers' use of agriculture technology. Asian Social Science 9, 120124.
Atherton, JT and Slobodan Simonovic, S (2013) A System Dynamics Approach to Water Resources and Food Production in the Gambia. Ontario: University of Western.
Ayenew, MM and Kopainsky, B (2014) Food insecurity in Ethiopia: population, food production and market. In 32nd International Conference of the System Dynamics Society. At Delft, The Netherlands, pp. 1–29.
Belisle, FJ (1983) Tourism and food production in the Caribbean. Ann. Tour. Res. 10, 497513.
Briguglio, L (1995) Small Island developing states and their economic vulnerabilities. World Development 23, 16151632.
Buzby, JC and Hyman, J (2012) Total and per capita value of food loss in the United States q. J. Food Policy 37, 561570.
Candy, S, Biggs, C, Larsen, K and Turner, G (2015) Modelling food system resilience: a scenario-based simulation modelling approach to explore future shocks and adaptations in the Australian food system. Journal of Environmental Studies and Sciences 5, 712731.
Christos, K, Naoum, T and Dimitrios, V (2014) A system dynamics approach towards food security in agrifood supply networks: a critical taxonomy of modern challenges in a sustainability context. In 9th Mibes International Conference, pp. 122138.
Coello, S and Saunders, A (2011) Final Project Evaluation: Control of invasive species in the Galapagos Archipelago, ECU/00/G31. 107 pp. + 12 Annexes.
Consejo de Gobierno del Régimen Especial de Galápagos (2014) Censo de Unidades de Producción Agropecuaria de Galápagos. Galapagos, Ecuador.
Cox, L, Fox, M and Bowen, RL (1995) Does tourism destroy agriculture? Ann. Tour. Res. 22, 210213.
Cremers, L (2002) Irrigated Agriculture on the Galapagos Islands: Fit for Survival. Wageningen, Netherlands: Wageningen University.
El Telégrafo (2018) Ecuador promocionó en EE.UU. su oferta cafetalera exportable. Available at (accessed 26 May 2018).
Espín, P (2016) Model-Based Assessment of Tourism Sustainability in Island Ecosystems: Understanding the Dynamics of The Galapagos Islands. Lisboa, Portugal: Universidade Nova de Lisboa.
FAO (1996) Rome Declaration on World Food Security. Rome: Food and Agriculture Organization.
FAO (2006) Food security. Policy Brief, 1–4. doi: 10.1016/j.jneb.2010.12.007.
FAO (2014) Food security and nutrition in small island developing states (SIDS). Policy Pap. 16.
FAO (2016 a) State of Food Security and Nutrition in Small Island Developing States (SIDS) 8.
FAO (2016 b) The State of Food and Agriculture, Livestock in the Balance. ISBN: 978-92-5-107671-2 I.
FAO (2017) Taller de Articulación para la Construcción de un Sistema de Información Integral, in: Sistema de Información Alimentaria de Galápagos. Santa Cruz, Ecuador.
Freire, W, Ramírez, MJ, Belmont, P, Mendieta, MJ, Silva, K, Romero, N, Sáenz, K, Piñeiros, P, Gómez, L and Monge, R (2014) Tomo 1: Encuesta Nacional de Salud y Nutrición de la Población Ecuatoriana de cero a 59 años, 1st editio.Quito, Ecuador: Ministerio de Salud Pública/Instituto Nacional de Estadísticas y Censos.
Gerbens-Leenes, PW, Nonhebel, S and Krol, MS (2010) Food consumption patterns and economic growth. Increasing affluence and the use of natural resources. Appetite 55, 597608.
Giraldo, DP, Betancur, MJ and Arango, S (2008) Food security in development countries: a systemic perspective. Technology (elmsford, NY ) 1, 115.
González, JA, Montes, C, Rodríguez, J and Tapia, W (2008) Rethinking the Galapagos Islands as a complex social-ecological system: implications for conservation and management. Ecology and Society 13, 13.
Granda, M, Sandra, G and Calvopiña, V (2012) Medición de pobreza en Galápagos, in: Informe Galápagos 2011–2012. DPNG, GCREG, FCD y GC, Puerto Ayora, Galápagos, Ecuador. pp. 8491.
Grenier, C (2000) Conservation Contre Nature: Les Iles Galápagos. IRD, Paris, France: Collection Latitudes 23, 1374.
Guma, IP, Rwashana, AS and Oyo, B (2016) Household Food Security Policy Analysis: A System Dynamics Perspective 5.
Guzmán, JC and Poma, JE (2013) Bioagricultura: Una oportunidad para el buen vivir insular. Informe Galápagos 2014, 2529.
Hammond, RA and Dubé, L, (2012) A systems science perspective and transdisciplinary models for food and nutrition security. Proceedings of the National Academy of Sciences of the United States of America 109, 1235612363.
Heakal, R (2017) Investopedia [www Document]. Econ. Basics Supply Demand. Available at (accessed 21 March 2017).
INEC (1974) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (1982) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2001) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2006) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2009) Encuesta de Condiciones de Vida. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2010) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2014) Encuesta de Condiciones de Vida – Galápagos. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
INEC (2015) Censo de Población y Vivienda. Quito, Ecuador: Instituto Nacional de Estadística y Censos del Ecuador.
Jackson, M (2007) Galapagos: A Natural History. Calgary, Canada: University of Calgary.
Jäger, H, Kowarik, I and Tye, A (2009) Destruction without extinction: long-term impacts of an invasive tree species on Galapagos highland vegetation. Journal of Ecology 97, 12521263.
Jaramillo, P, Cueva, P, Jiménez, E and Ortiz, J (2014) Galapagos Verde 2050.
Kearney, J (2010) Food consumption trends and drivers. Philosophical Transactions of the Royal Society B 365, 27932807.
Kerr, S, Cardenas, S and Hendy, J (2004) Migration and the environment in the Galapagos: an analysis of economic and policy incentives driving migration, potential impacts from migration control, and potential policies to reduce migration pressure, Motu Working Paper Series No. 03-17.
Khodeir, MH and Abdel-salam, H (2015) A simulation model for wheat-related policies and food insecurity in Egypt. Syst. Dyn. Conf. 1, 20.
Latimer, H (1985) Developing-island economies – tourism v agriculture. Tourism Management 6, 3242.
Llive, F (2016) Estimación de la intermediación en los alimentos importados al Archipiélago de Galápagos. Rev. Agroeconómica del MAGAP. pp. 111.
Loumou, A, Giourga, C, Dimitrakopoulos, P and Koukoulas, S (2000) Tourism contribution to agro-ecosystems conservation: the case of Lesbos Island, Greece. Environmental Management 26, 363370.
MAGAP (2013) Diagnostio del Agro en la Provincia de Galapagos. Santa Cruz, Ecuador.
MAGAP (2016) Plan de Bioagricultura para Galápagos. Quito, Ecuador, pp. 1322.
MAGAP (2018) Galápagos participó en feria internacional del café. Available at (accessed 26 May 2018).
McElroy, JL and Albuquerque, K (1990) Sustainable small- scale agriculture in small Caribbean Islands. Society & Natural Resources 3, 109129.
McGregor, A, Bourke, R, Manley, M, Tubuna, S and Deo, R (2009) Pacific island food security: situation, challenges and opportunities. Pacific Economic Bulletin 24, 2442.
Meadows, D (1980) The Unavoidable A Priori, in: Elements of the System Dynamics Method. Waltham, MA: Pegasus Communications, pp. 2357.
Monasterolo, I, Mollona, E and Pasqualino, R (2015) The role of system dynamics modelling to understand food chain complexity and address challenges for sustainability policies. In SYDIC and the Food and Agriculture Organization of the United Nations (FAO) Meeting Urban Food Needs Project, pp. 1–15.
ONU (1994) Informe de la conferencia mundial sobre desarrollo sostenible de los pequeños estados insulares en desarrollo. In Conferencia Mundial sobre Desarrollo Sostenible de los Pequeños Estados Insulares en Desarrollo en Bridgwtown, Barbados. New York, USA, pp. 1–95.
Øvrum, A, Alfnes, F, Almli, VL and Rickertsen, K (2012) Health information and diet choices: results from a cheese experiment. 37, 520–529.
Parque Nacional Galápagos (2013) Proyecto de Control y Erradicación de Especies Invasoras Prioritarias para la Reducción de la Vulnerabilidad de Especies Endémicas y Nativas de las Islas Galápagos. San Cristobal, Galápagos, Ecuador: Parque Nacional Galápagos, Ministerio del Ambiente.
Pizzitutti, F, Walsh, SJ, Rindfuss, RR, Gunter, R, Quiroga, D, Tippett, R and Mena, CF (2016) Scenario planning for tourism management: a participatory and system dynamics model applied to the Galapagos Islands of Ecuador. Journal of Sustainable Tourism 9582, 121.
Rey Benayas, J (2007) Abandonment of agricultural land: an overview of drivers and consequences. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources, 2(057). Available at:
Snell, H, Tye, A, Causton, C and Bensted-Smith, R (2002) Current status of and threats to the terrestria biodiversity of Galapagos. In Bensted-Smith, R (ed.) A Biodiversity Vision for the Galapagos Islands. Santa Cruz, Ecuador: Charles Darwing Foundation and World Wildlife Fund, pp. 3047.
Stave, KA and Kopainsky, B (2015) A system dynamics approach for examining mechanisms and pathways of food supply vulnerability. Journal of Environmental Studies and Sciences 5, 321336.
Sterman, JD (2000) Systems Thinking and Modeling for a Complex World. Boston: Irwin/McGraw-Hill.
Taylor, EHJSM (2006) Ecotourism and economic growth in the Galapagos: an Island economy-wide analysis. Environment and Development Economics 14, 139162.
Telfer, DJ and Wall, G (1996) Linkages between tourism and food production. Ann. Tour. Res. 23, 635653.
Tribunal Constitucional (2004) Registro Oficial. 21 de Octubre 2004.
Trueman, M, Atkinson, R, Guézou, A and Wurm, P (2010) Residence time and human-mediated propagule pressure at work in the alien flora of Galapagos. Biological Invasions 12, 39493960.
Walsh, SJ and Mena, CF (2016) Interactions of social, terretrial, and marine sub-systems in the Galapagos Islands. Proceedings of the Natural Academy of Sciences of the United States of America 113, 1453614543.
Watkins, G and Cruz, F (2007) Galapagos at risk: a socioeconomic analysis. Santa Cruz, Ecuador: Charles Darwin Foundation.


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Food supply system dynamics in the Galapagos Islands: agriculture, livestock and imports

  • Carolina Sampedro (a1), Francesco Pizzitutti (a2), Diego Quiroga (a1) (a2) (a3), Stephen J. Walsh (a2) (a4) and Carlos F. Mena (a1) (a2) (a3)...


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