Wasserumsatz und Stoffbewegungen

Lange, O. L.

doi:10.1007/978-3-642-65480-0_6

Cited by 13 publications

(2 citation statements)

References 187 publications

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“…So entrenched has this idea become, in fact, that a whole body of theoretical work has been produced to strengthen and explain it Cowan and Farquhar, 1977;Farquhar, 1978; Maier-Maercker, 1979a, b; Jarvis and Morison, 1981]. Indeed, it has even led to the suggestion that this "feedforward" (as opposed to "feedback") property of plant stomata may actually allow stomata to serve as "humidity sensors" [Ziegler, 1967;Lange, 1969Lange, , 1972.…”

Section: Stomatal Conductance Versus Air Vpdmentioning

confidence: 99%

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection

Idso¹,

Clawson²,

Anderson³

1986

Water Resources Research

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Throughout the summer and fall of 1985, several day-long sets of foliage temperature measurements were obtained for healthy and potentially transpiring water hyacinth, cotton, and alfalfa plants growing in a sealed and unventilated greenhouse at Phoenix, Arizona, along with concurrent measurements of air temperature, vapor pressure and net radiation, plus, in the case of the water hyacinths, leaf diffusion resistance measurements. Some data for these plants were additionally obtained out of doors under natural conditions, while dead, nontranspiring stands of alfalfa and water hyacinth were also monitored, both out of doors and within the greenhouse. Analyses of the data revealed that plant nonwater-stressed baselines, i.e., plots of foliage-air temperature differential versus air vapor pressure deficit for potentially transpiring vegetation, were (1) curvilinear, as opposed to the straight lines which have so often appeared to be the case with much smaller and restricted data sets, and (2) that these baselines are accurately described by basic theory, utilizing independently measured values of plant foliage and aerodynamic resistances to water vapor transport. These findings lead to some slight adjustments in the procedure for calculating the Idso-Jackson plant water stress index and they suggest that plants can adequately respond to much greater atmospheric demands for evaporation than what has been believed possible in the past. In addition, they demonstrate that the likely net radiation enhancement due to a doubling of the atmospheric carbon dioxide concentration will have little direct effect on vegetation temperatures, but that the antitranspirant effect of atmospheric CO 2 enrichment on foliage temperature may be substantial. Hatfieldet al., 1980; Clawson and Blad, 1982; Gieser et al., 1982; Hatfield, 1982; Bonnano and Mack, 1983; Steiner et al., 1985] and to predicting crop yields fidso et al., 1977b, 1979a, b, 1980; Hatfield et al., 1978, 1979; Reginato et al., 1978; Walker and Hatfield, 1979; Jackson et el., 1980; Smith et al., 1985]. Also acquired was the ability to remotely detect the presence of certain plant diseases [Pinter et al., 1979; Nilson, 1984, 1985a, b, c] and the means to predict the potential for the mass flow of gases in aquatic plants [Dacey, 1980, 1981a, b; ldso, 1981]. In the area of climate, little work has been done on the effects of plant foliage temperature [Dickinson, 1983]. Apart from some early analyses of air temperature regimes over tropical islands covered with lush vegetation [Priestly, 1966; Priestly and Taylor, 1972], the first study to directly confront the topic was that of Dickinson et el. [1981], who developed a simple parameterization of plant water flow for use in a global climate model. Shortly thereafter, Shukla and Mintz [1982] demonstrated the importance of such work to the climate modeling enterprise by showing that vegetation-induced changes in the evapotranspiration at the Earth's surface can significantly modify the global fields of rainfall, temperature and ...

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Section: Stomatal Conductance Versus Air Vpdmentioning

confidence: 99%

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection

Idso¹,

Clawson²,

Anderson³

1986

Water Resources Research

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“…Monteith, 1973;Wartena, 1974) and extending know ledge on plant-water relationships in the field (e.g. Lange, 1972;Thurtell, 1974).…”

Section: Introductionmentioning

confidence: 99%

Application of a new calibration method to an unventilated dynamic diffusion porometer.

Stigter¹,

Visscher²

1975

NJAS

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Responses of stomata to environmental factors-experiments with isolated epidermal strips of Polypodium vulgare

Lösch

1977

Oecologia

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Stomatal responses in isolated epidermis strips of the fern Polypodium vulgare to humidity and temperature were investigated. Movements were observed under a microscope, the epidermis being mounted in a climatized chamber above a water table, the gap between tissue and water being similar to that between epidermis and mesophyll in the intact leaf. Stomatal aperture increases as the water vapor deficit is decreased. The relationship is approximately linear until full aperture is reached. The speed of stomatal movement depends on the magnitude of the change in saturation deficit. Temperature also exerts a strong influence on stomatal aperture. Low temperature causes closure. Maximal opening occurs between about 20° C and 28° C. Higher temperature leads to a slight reduction in aperture. The temperature range corresponding to maximum apertures depends on the temperature that prevailed during cultivation of the plants. The data are used to construct three-dimensional graphs showing stomatal behavior under the simultaneous influence of temperature and humidity for plants of different precultivation. The possible mechanisms that lead to the observed stomatal reactions are discussed.

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Wasserumsatz und Stoffbewegungen

Cited by 13 publications

References 187 publications

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection

Application of a new calibration method to an unventilated dynamic diffusion porometer.

Responses of stomata to environmental factors-experiments with isolated epidermal strips of Polypodium vulgare

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Wasserumsatz und Stoffbewegungen

Cited by 13 publications

References 187 publications

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO2/climate connection

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO2/climate connection

Application of a new calibration method to an unventilated dynamic diffusion porometer.

Responses of stomata to environmental factors-experiments with isolated epidermal strips of Polypodium vulgare

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Product

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Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection

Foliage temperature: Effects of environmental factors with implications for plant water stress assessment and the CO₂/climate connection