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INTRODUCTORY TEXT TO THE LESSON This e-lesson describes a boat visit to the Douro river canyon, in Douro International Natural Park.
The main learning objectives are:
- Describe the influence of five abiotic factors (light, water, soil, temperature, wind) on ecosystems.
- Refer examples of adaptations of living organisms to the abiotic factors studied (relate fauna and flora of the region to the soil-climatic characteristics).
- Identify types of biotic relationships (lichens as symbiotic associations).
- Describe the stages of an ecological succession (lichens as pioneer species).
- Equilibrium disturbances of ecosystems (lichens as bioindicators).
- Preservation of biodiversity and geodiversity in Portugal (typology of protected areas).