The geographical excursion to Tenerife and La Gomera, led by Dr. Christoph Jörges and Dr. Thomas Mayer, provided an in-depth examination of physical-geographical processes and their interactions with anthropogenic influences on the Canary Islands. The focus was on volcanism, geology, vegetation and climate zones, which were examined at selected locations using interdisciplinary methods. The selected islands offered an ideal setting for diverse links between geographical theory and practice due to their history of formation and the microclimates resulting from their exposure and altitude.
Physical-geographical focal points
A central component of the excursion was the study of volcanic processes. This was particularly evident in Teide National Park on Tenerife, a UNESCO World Heritage Site. There, the students analyzed pyroclastic deposits, lava flows, and the geomorphological development of the Las Cañadas caldera. In addition, the El Portillo visitor center offered an in-depth look at the tectonic and magmatic processes involved in island formation.
The vegetation zones of the Canary Islands were studied in the Anaga Mountains of Tenerife and in the laurel forest of Garajonay National Park on La Gomera. This fairytale cloud forest is a relic of Tertiary flora and is characterized by its high biodiversity and adaptation to the humid microclimate. A ranger from the national park explained the historical, ecological, and economic significance of this ecosystem, as well as the challenges posed by tourism and climate change.
Anthropogenic influences and sustainable use
With regard to the use of the Canary Islands, the excursion focused on tourism and agriculture. The interactions between geology and agriculture were discussed at a winery in El Sauzal. Here, the influence of volcanic soils and altitudes on wine growing was discussed. At a banana plantation in the south of Tenerife, participants gained insights into irrigation techniques and the economic conditions of banana cultivation under semi-arid conditions.
Methodological approaches and student contributions
The excursion was characterized by expert lectures and active student participation.
- Diverse insights: wine growing , maintenance and management of a national park, banana cultivation, stargazing
- Practical geology: The application of geological field methods, such as the use of a geologist's hammer, enabled an in-depth examination of volcanic processes.
- Independent research: Adaptation strategies of vegetation (endemic species in Drago Park), volcanism (El Protillo, Teide), rock analysis (phonlyt discovery), etc.
Conclusion
The excursion offered a comprehensive geographical analysis of the Canary Islands. Through a combination of specialist lectures, practical exercises, and independent research assignments, participants were able to not only deepen their specialist knowledge but also further develop their methodological skills in field research.
