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Mapping Global Agricultural History: A Map and Gazetteer for Sub-Saharan Africa, c. 1800 AD

  • Mats Widgren
Chapter

Abstract

Recent global historical cropland modelling grossly underestimates the pre-colonial development of agriculture in the Americas and many parts of sub-Saharan Africa. Such models are usually developed by back casting from recent land cover, combined with environmentally deterministic algorithms. Historical geographers have been slow in responding to a new demand for a global synthesis. In this paper, a preliminary map of African agricultural systems dating to AD 1800 is presented. It forms a component of the project Mapping Global Agriculture and is based on the existing historical literature, observations by early travelers, archaeology and archaeobotany. It should be emphasized that the generated map should be considered preliminary.

Keywords

Land cover Land use Agricultural systems Historical croplands 

Notes

Acknowledgements

A map like this is by nature always in progress. This version benefitted greatly from important critical remarks and suggestions from the participants of 8th International Workshop for African Archaeobotany in Modena 2015 and of the PAGES LandCover6k workshop in Utrecht 2016, two anonymous reviewers, from the editors of this volume and many other colleagues. But as a work in progress much more can be done to improve it. The GIS-file can be critically scrutinized by downloading it from  https://doi.org/10.17045/sthlmuni.5173477. Please quote this chapter if the GIS file is used in further work.

References

  1. Adams WM (1991) Wasting the rain: the ecology and politics of water resources in Africa. Earthscan, LondonGoogle Scholar
  2. Adams WM, Potkanski T, Sutton JEG (1994) Indigenous farmer-managed irrigation in Sonjo, Tanzania. Geogr J 160:17–32CrossRefGoogle Scholar
  3. Ajayi JFA, Crowder M, Coquery-Vidrovitch C, Laclavère G (1988) Atlas historique de l’Afrique. Les Editions du Jaguar, ParisGoogle Scholar
  4. Allan W (1965) The African husbandman. Oliver & Boyd, EdinburghGoogle Scholar
  5. Almeida FJM, de Lacerda E, Burton RF et al (1873) Lacerda’s journey to Cazembe in 1798. John Murray, LondonGoogle Scholar
  6. Ambler CH (1988) Kenyan communities in the age of imperialism: the central region in the late nineteenth century. Yale historical publications. Miscellany, vol 36. Yale University Press, New HavenGoogle Scholar
  7. Amborn H (2009) Flexibel aus Tradition: Burji in Äthiopien und Kenia. Unter Verwendung der Aufzeichnungen von Helmut Straube. With explanation of some cultural items in English. Aethiopistische Forschungen, vol 71. Harrassowitz, WiesbadenGoogle Scholar
  8. Anderson DM (1988) Cultivating pastoralists: Ecology and economy among the Il Chamus of Baringo, 1840–1980. In: Johnson D, Anderson DM (eds) The ecology of survival: case studies from Northeast African history. Crook, London, pp 241–260Google Scholar
  9. Anderson DM (1989) Agriculture and irrigation technology at Lake Baringo in the nineteenth century. Azania 24:89–97CrossRefGoogle Scholar
  10. Barth H (1858) Travels and discoveries in North and Central Africa: being a journal of an expedition undertaken under the auspices of H. B. M.’s government, in the years 1849–1855, vol. 5. Longman, Brown, Green, Longmans, Roberts, LondonGoogle Scholar
  11. Bassi M (2011) Primary identities in the lower Omo valley: migration, cataclysm, conflict and amalgamation, 1750–1910. J East Afr Stud 5(1):129–157CrossRefGoogle Scholar
  12. Beck WG (1943 (reprint 1968)) Beiträge zur Kulturgeschichte der afrikanischen Feldarbeit, Stuttgart 1943. Repr. Johnson Reprint, New York, NY, London (tr. Meisenheim (Glan))Google Scholar
  13. Beez J (2005) Die Ahnen essen keinen Reis: Vom lokalen Umgang mit einem Bewässerungsprojekt am Fuße des Kilimanjaro in Tansania. Universität Bayreuth, BayreuthGoogle Scholar
  14. Ben Yahmed D, Sablayrolles J (2000) L’atlas de l’Afrique. Jaguar, ParisGoogle Scholar
  15. Berntsen JL (1976) Maasai and their neighbors: variables of interaction. Afr Econ Hist 2:1–11Google Scholar
  16. Blench RM (1997) The history of agriculture in northeastern Nigeria. In: Barreteau D, Dognin R, von Graffenried C (eds) L’Homme et le milieu végétal dans le Bassin du Lac Tchad. Orstom, Paris, pp 69–112Google Scholar
  17. Blench RM (2006) Archaeology, language, and the African past. AltaMira Press, LanhamGoogle Scholar
  18. Boffa J-M (1999) Agroforestry parklands in Sub-Saharan Africa. FAO, RomeGoogle Scholar
  19. Bollig M, Schnegg M, Wotzka H-P (2013) Pastoralism in Africa: past, present and future. Berghahn Books, New YorkGoogle Scholar
  20. Börjeson L (2004) A History under Siege: intensive agriculture in the Mbulu Highlands, Tanzania, 19th century to the present. Acta Universitatis Stockholmiensis, StockholmGoogle Scholar
  21. Butzer KW (1992) The Americas before and after 1492: an introduction to current geographical research. Ann Assoc Am Geogr 82(3):345–368CrossRefGoogle Scholar
  22. Caillié R (1830a) Journal d’un voyage a Temboctou et a Jenné dans l’Afrique centrale précéde observations faites chez les maures braknas, les nalous et d’autres peuples; pendant les années 1826–1828 T. 2. Imprimerie royale, ParisGoogle Scholar
  23. Caillié R (1830b) Journal d’un voyage a Temboctou et a Jenné dans l’Afrique centrale précéde observations faites chez les maures braknas, les nalous et d’autres peuples; pendant les années 1826–1828 T. 1. Imprimerie royale, ParisGoogle Scholar
  24. Campbell G (2005) An economic history of Imperial Madagascar 1750–1895: the rise and fall of an island empire. African studies series, vol 106. Cambridge University Press, New YorkGoogle Scholar
  25. Carney JA (2001) Black rice: the African origins of rice cultivation in the Americas. Harvard University Press, CambridgeGoogle Scholar
  26. Christopher AJ (1982) Towards a definition of the nineteenth century South African Frontier. S Afr Geogr J 64(2):97–113CrossRefGoogle Scholar
  27. Cochet H (2001) Crises et révolutions agricoles au Burundi. Karthala, ParisGoogle Scholar
  28. David N (1976) History of crops and peoples in North Cameroon to A.D. 1900. In: Harlan JR, De Wet JMJ, Stemler ABL (eds) Origins of African plant domestication. Mouton, The Hauge, pp 223–268Google Scholar
  29. Davies MIJ, Kipruto TK, Moore HL (2014) Revisiting the irrigated agricultural landscape of the Marakwet, Kenya: tracing local technology and knowledge over the recent past. Azania 49(4):486–523CrossRefGoogle Scholar
  30. Delius P, Maggs T, Schoeman A (2014) Forgotten World: the stone walled settlements of the Mpumalanga Escarpment. Wits University Press, JohannesburgCrossRefGoogle Scholar
  31. Denevan WM (2001) Cultivated landscapes of Native Amazonia and the Andes: triumph over the soil, Oxford geographical and environmental studies. Oxford University Press, OxfordGoogle Scholar
  32. Denham D, Oudney W, Clapperton H (1826) Narrative of travels and discoveries in Northern and Central Africa, in the years 1822, 1823 and 1824, by Major Denham, F.R.S., Captain Clapperton, and the late Doctor Oudney, vol I, 2nd edn. John Murray, LondonGoogle Scholar
  33. Dixon J, Gulliver A, Gibbon D (2001) Farming systems and poverty: improving farmers’ livelihoods in a changing world. FAO, RomeGoogle Scholar
  34. Doolittle WE (2000) Cultivated landscapes of native North America. Oxford geographical and environmental studies. Oxford University Press, OxfordGoogle Scholar
  35. Fields-Black EL (2008) Deep roots: rice farmers in West Africa and the African diaspora. Indiana University Press, BloomingtonGoogle Scholar
  36. Fuller DQ, Hildebrand E (2013) Domesticating plants in Africa. In: Mitchell P, Lane P (eds) The Oxford handbook of African archaeology. Oxford University Press, Oxford, pp 507–526Google Scholar
  37. Gaillard MJ, Sugita S, Mazier F et al (2010) Holocene land-cover reconstructions for studies on land cover-climate feedbacks. Clim Past 6(4):483–499CrossRefGoogle Scholar
  38. Gaillard M-J (2015) LandCover6k: global anthropogenic land-cover change and its role in past climate. Pages Mag 23(1):38–39CrossRefGoogle Scholar
  39. Gedge E (1892) A recent exploration, under Captain F. G. Dundas, R. N., up the River Tana to Mount Kenia. Proc R Geogr Soc Monthly Rec Geogr 14(8):513–533Google Scholar
  40. Gifford-Gonzalez D, Hanotte O (2011) Domesticating animals in Africa: implications of genetic and archaeological findings. J World Prehist 24:1–23CrossRefGoogle Scholar
  41. Gifford-Gonzalez D, Hanotte O (2013) Domesticating animals in Africa. In: Mitchell P, Lane P (eds) The Oxford handbook of African archaeology. Oxford University Press, Oxford, pp 491–506Google Scholar
  42. Gillman CA (1936) A population map of Tanganyika territory. Geogr Rev 26(3):353–373CrossRefGoogle Scholar
  43. Goldewijk KK (2001) Estimating global land use change over the past 300 years: The HYDE database. Global Biogeochem Cy 15(2):417–433CrossRefGoogle Scholar
  44. Goldewijk K, Beusen A, van Drecht G, de Vos M (2011) The HYDE 3.1 spatially explicit database of human-induced global land-use change over the past 12,000 years. Global Ecol Biogeogr 20(1):73–86Google Scholar
  45. Grigg D (1965) The logic of regional systems. Ann Assoc Am Geogr 55(3):465–491CrossRefGoogle Scholar
  46. Grigg DB (1969) The agricultural regions of the world: review and reflections. Econ Geogr 45(2):95–132CrossRefGoogle Scholar
  47. Grigg DB (1974) The agricultural systems of the world: an evolutionary approach. Cambridge Geographical Studies, vol 5. Cambridge University Press, CambridgeGoogle Scholar
  48. Guelke L (1976) Frontier settlement in early Dutch South Africa. Ann Assoc Am Geogr 66(1):25–42CrossRefGoogle Scholar
  49. Guillon R, Quiquérez A, Petit C et al (2013) Stone lines and heaps on South-Western Niger plateaus as remains of ancient agricultural land. In: Djindjian F, Sandrine (eds) Understanding landscapes, from land discovery to their spatial organization. Archaeopress, Oxford, pp 87–96Google Scholar
  50. Håkansson NT (1994) Grain, cattle, and power: social processes of intensive cultivation and exchange in precolonial Western Kenya. J Anthropol Res 50(3):249–276CrossRefGoogle Scholar
  51. Håkansson NT (2004) The human ecology of world systems in East Africa: the impact of the ivory trade. Hum Ecol 32:561–591Google Scholar
  52. Håkansson NT (2008) The decentralized landscape: Regional wealth and the expansion of production in Northern Tanzania before the eve of colonialism. In: Cliggett L, Pool CA (eds) Economies and the transformation of landscape. Society for Economic Anthropology monographs, vol 25. Altamira Press, Lanham, pp 239–266Google Scholar
  53. Håkansson NT (2012) Ivory: Socio-ecological consequences of the East African ivory trade. In: Hornborg A, Clark B, Hermele K (eds) Ecology and power: struggles over land and material resources in the past, present, and future. Taylor & Francis, HobokenGoogle Scholar
  54. Håkansson NT, Widgren M (2007) Labour and landscapes: the political economy of landesque capital in nineteenth century Tanganyika. Geogr Ann B 3:233–248CrossRefGoogle Scholar
  55. Harris DR (1976) Traditional systems of plant food production and the origins of agriculture in West Africa. In: Harlan JR, De Wet JMJ, Stemler ABLA (eds) Origins of African plant domestication. Mouton, The Hague, pp 311–356Google Scholar
  56. Havnevik K (1993) Tanzania: the limits to development from above. Scandinavian Institute of African Studies (Nordiska Afrikainstitutet) in cooperation with Mkuki na Nyota Publ., Tanzania, UppsalaGoogle Scholar
  57. Hawthorne W (2003) Planting rice and harvesting slaves: transformations along the Guinea-Bissau coast, 1400–1900. Heinemann, PortsmouthGoogle Scholar
  58. He FN, Li SC, Zhang XZ (2012) Reconstruction of cropland area and spatial distribution in the mid-Northern Song Dynasty (AD1004–1085). J Geogr Sci 22(2):359–370CrossRefGoogle Scholar
  59. Höhn A, Neumann K (2012) Shifting cultivation and the development of a cultural landscape during the Iron Age (0–1500 AD) in the northern Sahel of Burkina Faso, West Africa: insights from archaeological charcoal. Quatern Int 249:72–83CrossRefGoogle Scholar
  60. Jackson K (1976) The dimensions of Kamba pre-Colonial history. In: Ogot BA (ed) Kenya before 1900: eight regional studies. East African Publishing House, Nairobi, pp 174–261Google Scholar
  61. Kahlheber S, Höhn A, Neumann K (2013) Plant and land use in southern Cameroon 400 B.C.E.–400 B.C.E. In: Stevens CJ, Nixon S, Murray M-A, Fuller DQ (eds) Archaeology of African plant use. Left Coast Press, Walnut CreekGoogle Scholar
  62. Khattar MO (1995) Les sites Gangara, la fin de la culture de Tichitt et l’origine de Ghana. J Africanistes 65(2):31–41CrossRefGoogle Scholar
  63. Khattar MO, Grébénart D, Vernet R (1994) Les parcellaires préhistoriques du Tagant (Mauritanie). Bull Soc Préhist Fr 91(6):457–458CrossRefGoogle Scholar
  64. Kjekshus H (1977) Ecology control and economic development in East African history: the case of Tanganyika, 1850–1950. Heinemann, LondonGoogle Scholar
  65. Koponen J (1988) People and production in late precolonial Tanzania: history and structures. Monographs of the Finnish Society for Development Studies, 0284–4818, vol 2. Finnish Society for Development Studies, HelsinkiGoogle Scholar
  66. Kottek M, Grieser J, Beck C et al (2006) World map of the Koppen-Geiger climate classification updated. Meteorol Z 15(3):259–263CrossRefGoogle Scholar
  67. Le Bourdiec F (1974) Hommes et paysages du riz à Madagascar: étude de géographie humaine. s.n., AntananarivoGoogle Scholar
  68. Le Roy X, Kane M, Marcellin C et al (2005) Pauvreté et accès à l’eau dans la vallée du Sénégal. Paper presented at the international Symposium on Pauvreté hydraulique et crises sociales, Agadir, 12–15 December 2005Google Scholar
  69. Li BB, Jansson U, Ye Y et al (2013) The spatial and temporal change of cropland in the Scandinavian Peninsula during 1875-1999. Reg Environ Change 13(6):1325–1336CrossRefGoogle Scholar
  70. Maggs T (1980) The Iron-Age sequence South of the Vaal and Pongola Rivers-some historical implications. J Afr Hist 21(1):1–15CrossRefGoogle Scholar
  71. Maggs T (1984) The Iron Age south of the Zambezi. In: Klein RG (ed) Southern African prehistory and paleoenvironments. Balkema, Rotterdam, pp 329–360Google Scholar
  72. Mann CC (2005) 1491: new revelations of the Americas before Columbus, 1st edn. Knopf, New YorkGoogle Scholar
  73. Marzouk Y (1989) Societes rurales et techniques hydrauliques en Afrique. Étud rurales 115–116:9–36Google Scholar
  74. McCann J (1995) People of the plow: an agricultural history of Ethiopia, 1800–1990. University of Wisconsin Press, MadisonGoogle Scholar
  75. McEvedy C, Jones R (1978) Atlas of world population history. Penguin, LondonGoogle Scholar
  76. Miracle MP (1967) Agriculture in the Congo basin: tradition and change in African rural economies. MadisonGoogle Scholar
  77. Monson J (1991) Agricultural transformation in the Inner Kilombero Valley of Tanzania, 1840–1940. University of California, Los AngelesGoogle Scholar
  78. Morgan WB (1969) Peasant agriculture in tropical Africa. In: Thomas MF, Whittington GW (eds) Environment and land use in Africa. Methuen, London, pp 241–272Google Scholar
  79. Östberg W (2004) The expansion of Marakwet hill-furrow irrigation in Kenya. In: Widgren M, Sutton JEG (eds) Islands of intensive agriculture in Eastern Africa. James Currey, Oxford, pp 19–48Google Scholar
  80. Paul J-L (2003) Anthropologie historique des Hautes Terres de Tanzanie orientale: stratégies de peuplement et reproduction sociale chez les Luguru matrilinéaires. IFRA, Paris; Nairobi, KarthalaGoogle Scholar
  81. Pélissier P (1966) Les paysans du Sénégal: les civilisations agraires du Cayor à la Casamance. Fabrègue, Saint-YrieixGoogle Scholar
  82. Petek N, Lane P (2017) Ethnogenesis and surplus food production: communitas and identity building among nineteenth-and early twentieth-century Ilchamus, Lake Baringo, Kenya. World Archaeol:1–21CrossRefGoogle Scholar
  83. Pongratz J, Reick C, Raddatz T et al. (2008) A reconstruction of global agricultural areas and land cover for the last millennium. Global Biogeochem Cy 22(3)CrossRefGoogle Scholar
  84. Powell JM, Williams TO (1993) An overview of mixed farming systems in sub-Saharan Africa. In: Powell JM, Fernandez-Rivera S, Williams TO, Renard C (eds) Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa, vol 2, Technical Papers. International Livestock Centre for Africa, Addis AbabaGoogle Scholar
  85. Prudencio CY (1993) Ring management of soils and crops in the West-African semiarid tropics:-the case of the Mossi farming system in Burkina-Faso. Agr Ecosyst Environ 47(3):237–264CrossRefGoogle Scholar
  86. Ramankutty N, Foley JA (1999) Estimating historical changes in global land cover: Croplands from 1700 to 1992. Global Biogeochem Cy 13(4):997–1027CrossRefGoogle Scholar
  87. Reid A (2001) Bananas and the archaeology of Buganda. Antiquity 75(290):811–812CrossRefGoogle Scholar
  88. Reinwald B (1997) ‘Though the earth does not lie’: Agricultural transitions in Siin (Senegal) under colonial rule. Paideuma 43:143–169Google Scholar
  89. Ruddiman WF (2003) The anthropogenic greenhouse era began thousands of years ago. Clim Change 61(3):261–293CrossRefGoogle Scholar
  90. Russell T, Silva F, Steele J (2014) Modelling the spread of farming in the Bantu-speaking regions of Africa: An archaeology-based phylogeography. Plos One 9(1)CrossRefPubMedPubMedCentralGoogle Scholar
  91. Sautter G (1962) A propos de quelques terroirs d’Afrique Occidentale: Essai comparatif. Études rurales 4:24–86CrossRefGoogle Scholar
  92. Schneider HK (1970) The Wahi Wanyaturu: economics in an African society. Viking Fund Publications in Anthropology, vol 48. Wenner-Gren Foundation, New YorkGoogle Scholar
  93. Schoenbrun DL (1998) A green place, a good place: agrarian change, gender, and social identity in the Great Lakes region to the 15th century. Heinemann, PortsmouthGoogle Scholar
  94. Soper R (2002) Nyanga: ancient fields, settlements and agricultural history in Zimbabwe. Memoirs of the British Institute in Eastern Africa, vol 16. The British Institute in Eastern Africa, LondonGoogle Scholar
  95. Stamm V (1994) Anbausysteme und Bodenrecht in Burkina Faso. Afr Spectr:247–264Google Scholar
  96. Stanley HM (1872) How I found Livingstone: travels, adventures, and discoveries in Central Africa; including four months’ residence with Dr. Livingstone. Sampson Low, Marston, Searle and Rivington, LondonGoogle Scholar
  97. Stump D (2006) The development and expansion of the field and irrigation systems at Engaruka, Tanzania. Azania 41:69–94CrossRefGoogle Scholar
  98. Stump D, Tagseth M (2009) The history of pre-colonial and early colonial agriculture on Mount Kilimanjaro: A review. In: Clack TAR (ed) Culture, history and identity: landscapes of inhabitation in the Mount Kilimanjaro Area, Tanzania. BAR international series, vol 1966. Archaeopress, Oxford, pp 107–124Google Scholar
  99. Sutton JEG (1979) Towards a less orthodox history of Hausaland. J Afr Hist 20(2):179–201CrossRefGoogle Scholar
  100. Sutton JEG (1989) Towards a history of cultivating the fields. Azania 24:99–113CrossRefGoogle Scholar
  101. Sutton JEG (ed) (1996) The growth of farming communities in Africa from the Equator southwards. Azania 29(30). British Institute in Eastern Africa, NairobiGoogle Scholar
  102. Sutton JEG (1993) Becoming Maasailand. In: Spear T, Waller R (eds) Being Maasai: ethnicity and identity in East Africa. James Currey, Oxford, pp 38–68Google Scholar
  103. Tadesse M, Alemu B, Bekele G et al (2006) Atlas of the Ethiopian rural economy. International Food Policy Research Institute (IFPRI); Central Statistical Agency; Ethiopian Development Research InstituteGoogle Scholar
  104. Vansina J (1990) Paths in the rainforests: toward a history of political tradition in equatorial Africa. University of Wisconsin Press, MadisonGoogle Scholar
  105. Viguier P (2008) Sur les traces de René Caillié: le Mali de 1828 revisité. Éditions Quae, VersaillesGoogle Scholar
  106. von Oppen Av (1993) Terms of trade and terms of trust: the history and context of pre-colonial market production around the Upper Zambezi and Kasai. Studien zur afrikanischen Geschichte, vol 6. Lit, MünsterGoogle Scholar
  107. Watson EE (2009) Living terraces in Ethiopia: Konso landscape, culture and development. Eastern Africa series. James Currey, OxfordGoogle Scholar
  108. Watts M (1983) Silent violence: food, famine, and peasantry in northern Nigeria. University of California Press, BerkeleyGoogle Scholar
  109. Westerberg L-O, Holmgren K, Börjeson L et al (2010) The development of the ancient irrigation system at Engaruka, northern Tanzania: physical and societal factors. Geogr J 176:304–318CrossRefGoogle Scholar
  110. Whitmore TM, Turner BL (2001) Cultivated landscapes of middle America on the eve of conquest. Oxford geographical and environmental studies. Oxford University Press, OxfordGoogle Scholar
  111. Whittlesey D (1936) Major agricultural regions of the earth. Ann Assoc Am Geogr 26(4):199–240CrossRefGoogle Scholar
  112. Widgren M (2010a) Mapping Global Agricultural History. In: Kinda A, Komeie T, Mnamide S, Mizoguchi T, Uesugi K (eds) Proceedings of the 14th international conference of historical geographers, Kyoto 2009. Kyoto University Press, Kyoto, pp 211–212Google Scholar
  113. Widgren M (2010b) Besieged palaeonegritics or innovative farmers: historical political ecology of intensive and terraced agriculture in West Africa and Sudan. Afr Stud 69(2):323–343CrossRefGoogle Scholar
  114. Widgren M (2012) Slaves: Inequality and sustainable agriculture in pre-colonial West Africa. In: Hornborg A, Clark B, Hermele K (eds) Ecology and power: struggles over land and material resources in the past, present, and future. Routledge, Abingdon, Oxon, pp 97–107Google Scholar
  115. Widgren M (2017) Agricultural intensification in Sub-Saharan Africa, 1500–1800. In: Austin G (ed) Economic development and environmental history in the Anthropocene: perspectives on Asia and Africa. Bloomsbury Academic, London, pp 51–67Google Scholar
  116. Widgren M, Maggs T, Plikk A et al (2016) Precolonial agricultural terracing in Bokoni, South Africa: typology and an exploratory excavation. J Afr Archaeol 14(1)CrossRefGoogle Scholar
  117. Wolmer W, Scoones I (2000) The science of ‘civilized’ agriculture: the mixed farming discourse in Zimbabwe 99(397):575–600Google Scholar
  118. Yasuoka H (2013) Dense wild yam patches established by hunter-gatherer camps: beyond the wild yam question; toward the historical ecology of rainforests. Hum Ecol 41(3):465–475CrossRefGoogle Scholar
  119. Ylvisaker M (1979) Lamu in the nineteenth century: land, trade, and politics. African research studies, vol 13. African Center, Boston University, BostonGoogle Scholar

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© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Department of Human GeographyStockholm UniversityStockholmSweden

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