The Swiss Canopy Crane Project - Additional images

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Water relations studies in tree crowns at the Swiss Canopy Crane (Sonja Keel and Olivier Bignucolo). (1024x768 px)	The Swiss Canopy Crane in a deciduous forest near Basel, Switzerland. The forest is 35 m tall, the crane has a height of 45 m. (1840x1232 px)
The Swiss Canopy Crane near Basel in a 35 m tall deciduous forest, parts of which receive CO2 enrichment. (2272x1704 px)	Works in beech crowns at 35 m above ground using the Swiss Canopy Crane near Basel (l.t.r.: Sonja Keel, Olivier Bignucolo, Sebastian Leuzinger). (2272x1704 px)
A web of tubes in the canopy of 35 m tall trees (in this case beech) is used for CO2 enrichment to 530 ppm at the Swiss Canopy Crane site near Basel. (1704x2272 px)	The core of the web-FACE system for forest canopy CO2 enrichment at the Swiss Canopy Crane site near Basel. This control unit steers CO2 flux via 25 master supply lines and measures canopy CO2 concentrations at 100 points (75 used for instantaneous control, 25 for spatial monitoring). Prof. Christian K–rner of the University of Basel. (1704x2272 px)
CO2 gas tank of the Swiss Canopy Crane forest canopy CO2 enrichment facility near Basel. (1220x1840 px)