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Transpiration, Evaporation and Interception
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In this Monday episode of Talking Trees, we explore three essential water-related processes—transpiration, evaporation, and interception—that shape how trees interact with their environment and regulate the water cycle.
We discuss:
- Transpiration, the movement of water from roots through the plant and its release as vapor from leaf surfaces, driven by sunlight, humidity, and stomatal activity
- Evaporation, the transformation of water from liquid to vapor at exposed surfaces such as soil, bark, or leaf litter, contributing to cooling and moisture redistribution
- Interception, where rainwater is temporarily held by leaves, branches, and bark, delaying or reducing the amount reaching the ground and influencing infiltration and runoff
- How these processes vary with canopy structure, species, and climate, playing a key role in microclimate regulation and urban hydrology
- Their combined impact on tree health, drought resilience, and stormwater management
Understanding these dynamics helps arborists and planners appreciate how trees actively shape local environments and water systems.
Background information:
- Wikipedia
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- https://talkingtrees.arboristika.cz/
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- https://herohero.co/talkingtrees
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Chapters
1. Introduction to Tree Water Processes (00:00:00)
2. Transpiration: Trees as Giant Straws (00:01:20)
3. Drought Challenges and Tree Adaptations (00:03:10)
4. Interception: Trees as Natural Umbrellas (00:05:24)
5. Desert vs Rainforest Adaptations (00:07:43)
6. Climate Change Impacts on Trees (00:09:54)
7. Conclusion and Call to Action (00:11:22)
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