Rigorosum Viviana Buitron – 18.01.2019

Foto - Buitron, Alto Nangaritza

Im Rahmen der mündlichen Doktorprüfung spricht
Viviana Buitrón

zum Thema
Land-use/land-cover change (LUCC) in the context of an agricultural frontier in the southern Ecuadorian Amazon: A multiscale and interethnic perspective
Landnutzungs-/Landbedeckungswandel in einem Agrarkolonisationgebiet im Amazonasregenwald Südecuadors: Eine inter-ethnische Perspektive auf verschiedenen Maßstabsebenen

Land use/land cover change (LUCC) is a multifactorial phenomenon and shows interacting linkages to biophysical and sociocultural shifts. However, the interactions of drivers do not act at the same level. Depending on the scale of analysis, certain factors can become more visible and be explanatory variables of LUCC. At agricultural frontiers, forest loss in favor of other land uses seems to be even more complex as ethnicity is evident and mediates land-use-related decisions and valuations that configure resource management.

Foto – Buitron, Cattle ranching in Miazi

Considering this background, the research to be presented is concerned with the Alto Nangaritza in the southern Ecuadorian Amazon, a biodiverse tropical area hosting different ethnic groups (natives and settlers), and aims to enhance the understanding of the interactions of LUCC at agricultural frontiers from both a meso- and a microscale perspective. By means of a mixed methods approach, quantitative and qualitative research methods were applied in the area. Findings show that, at the mesoscale, growing extensive and intensive market-oriented land uses resulted in local forest loss, closely linked to immigration increasing throughout different phases of colonization. Conversely, at the microscale, forest and the other land uses interestingly presented a different proportion of loss and recovery considering a household-lifecycle perspective. At this scale, an ethnically differentiated structure of land-use values, a framework of analysis developed for this research, also provided insights about what different local groups consider to be good or desirable in terms of land-use types. Moreover, results indicated how land-use practices, learned among the groups, have helped them to survive in the context of the agricultural frontier.

This study, besides taking steps forward in the multiscale analysis of LUCC, contributes to the sensitivity in resource-related research regarding local factors of change, central when considering a successful future application of land-use policies and conservation measures in forest areas.

Betreuerin: Prof. Dr. Perdita Pohle

Wann: Freitag, den 18. Januar 2019
Wo: 13.30 Uhr im Seminarraum 00.175, Wetterkreuz 15 in Erlangen-Tennenlohe

Hierzu ergeht herzliche Einladung.