transpiration
Let an agent explain transpiration and its mechanism, relay measurement methods and rates from plant science sources, describe its role in ecosystems and climate, and distinguish transpiration from evaporation and evapotranspiration.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain transpiration and its mechanism, relay measurement methods and rates from plant science sources, describe its role in ecosystems and climate, and distinguish transpiration from evaporation and evapotranspiration.
The process by which water moves through a plant from the roots to the leaves and evaporates into the atmosphere through stomata, driven by the water potential gradient and cohesion in the xylem, accounting for most of the water absorbed by plants, cooling leaves, transporting minerals and, at the scale of canopies and ecosystems, returning a large share of land precipitation to the atmosphere as part of evapotranspiration.
What it is for: Not applicable; a biological process.
It can be explain the mechanism; relay measurement and rates; describe ecosystem role; distinguish related processes.
Distinguishing features
Stomatal control
Cohesion-tension mechanism
Cooling and transport
Climate role
What it looks like
Not a visible object; water vapour leaving leaves.
Physical character
share of land evapotranspiration: about 60 percent - estimates vary 40-80
mature tree transpiration: up to hundreds of litres per day - by species and conditions
How it is recognised
Water loss from plants through stomata
Leaf, plant and canopy transpiration
Evaporation is from surfaces; evapotranspiration combines both; guttation is liquid water exudation
Related models
is a kind of - in registry terms
occurs through - in leaves
is part of - with evaporation
drives - water flow
In practice
Families and kinds
stomatal transpiration
cuticular transpiration
lenticular transpiration
canopy transpiration
transpiration in crops and forests
Standards and regulation
FAO guidelines for crop evapotranspiration
No regulation of the process
Failure modes and hazards
Confusing transpiration with evaporation
Overgeneralising rates
Ignoring stomatal responses to stress
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.transpiration-2
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What transpiration is.
Science.
Definition
Definition and mechanism.
Definition
Definition.
- What is transpiration, and how do stomata, xylem and water potential drive it? definition
- Is the question about transpiration, evaporation or evapotranspiration? boundary
Kinds
Kinds and controls.
Kinds
Kinds.
- What kinds of transpiration exist, and how do light, humidity, wind and stress affect rates? definition
- Which entry fits stoma? action
Measure Measurement.
Science.
Methods
Methods.
Methods
Methods.
- How is transpiration measured with porometers, sap flow sensors, lysimeters and eddy covariance? provenance
- Which references are standard? provenance
Rates
Rates.
Rates
Rates.
- What transpiration rates do crops, trees and canopies show? measurement
- Which sources are cited? provenance
Apply Applications.
Application.
Agriculture
Agriculture.
Agriculture
Agriculture.
- How does transpiration inform irrigation scheduling and water use efficiency? provenance
- Which entry fits irrigation? action
Climate
Ecosystems and climate.
Climate
Climate.
- How does canopy transpiration shape the water cycle, rainfall and local climate? provenance
- Which entry fits evapotranspiration? action
Context History and teaching.
Context.
History
History.
History
History.
- How was transpiration discovered, from Hales to the cohesion-tension theory? provenance
- Which entry fits the history of plant physiology? action
Teaching
Teaching.
Teaching
Teaching.
- How is transpiration taught and demonstrated? provenance
- Which entry fits biology education? action
What the second pass must settle
- Should evapotranspiration and stoma be the primary linked entries?
- How should measurement references be linked?
- How should canopy transpiration be recorded?