Design of a Controlled-ventilation Open-top Chamber for Climate Change Research

Norris, T.; Bailey, B.J.; Lees, Matthew; Young, Paul Thomas

doi:10.1006/jaer.1996.0069

Cited by 14 publications

(3 citation statements)

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“…Among the several trial experiments systems developed to simulate the response of field crops to the elevated levels of CO 2 or others atmospheric gases, that include leaf chambers, controlled-environment plant growth cabinets, greenhouses, sunlit, controlled-environment plant growth chambers, field air exclusion systems and free air stream gas enrichment systems (Bindi et al 2001a, b), the OpenTop Chamber (OTC) system has been used in many climate change research (Norris et al 1996;Bindi et al 2002). In general, the relatively simple design and construction of OTC systems make them the most likely method to be used for long-term elevated CO 2 exposure of small to medium stature plants (Leadley and Drake 1993).…”

Section: Introductionmentioning

confidence: 99%

Effects of Open-Top Chambers on physiological and yield attributes of field grown grapevines

et al. 2009

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Touriga Franca grapevines were grown in Open-Top Chamber (OTC) and in outside plot (Exterior) for 3 years (2004)(2005)(2006) to investigate the impact of these structures on climatic conditions and, consequently, on physiological and yield attributes. In general, CO 2 assimilation, stomatal conductance, carbohydrate concentration, maximum bulk modulus of elasticity, palisade parenchyma thickness, leaf mass per unit area and values of red/far-red ratio transmitted by leaves were lower, whereas intrinsic water use efficiency, SPAD-readings and osmotic potential at full turgor were higher in OTC leaves. However, OTC did not affect leaf water potential, maximum PSII photochemical efficiency, stomatal density and soluble proteins concentration. Also, there were no significant differences in C, P, Ca and Fe between treatments. Meanwhile, N and Mg were higher, whereas K concentration was lower in OTC leaves. The environmental conditions inside OTC provided a significant reduction in yield and Ravaz index of 2004, mainly due to a decrease in clusters weight. Regarding the vegetative growth parameters, OTC did not influence the pruning weight, but in 2006 the weight/shoot was significantly lower in OTC vines. In conclusion, the use OTC facility to study the impact of CO 2 enrichment was very expedite, but the extrapolation of results to the open-field environment must be prudent due to the OTC effect.

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Section: Introductionmentioning

confidence: 99%

Effects of Open-Top Chambers on physiological and yield attributes of field grown grapevines

et al. 2009

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“…It has fair light transmittance, for example, less than 85% PAR, and high UV transmission. Unfortunately, it can only survive a few months of exposure to solar radiation unless stabilizers have been added to the film (Norris et al, 1996). No sunlit growth chambers have used PE films as cover material.…”

Section: Transparent Materialsmentioning

confidence: 99%

“…Furthermore, Teflon FEP film has excellent optical properties with 96% solar transmission, and broad spectral transmission, including ultraviolet and infrared wavelengths from 200 to 7000 nm (DuPont films, 1997c). Transmission of solar UV into a chamber is desirable because the increase in ambient UV flux is an important aspect of climate change (Norris et al, 1996). Teflon FEP film is unique among plastics because it also pro- vides outstanding resistance to weathering and ultraviolet degradation and has high resistance to impact and tearing.…”

Section: Teflon Filmmentioning

confidence: 99%