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  • 1
    Electronic Resource
    Electronic Resource
    Decreasing Transpiration of Field Plants by Chemical Closure of Stomata (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 97-98 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two field balances of the type described by Morris4 were installed in a level 20-acre field at Rothamsted and are distinguished as 'east' and 'west', about 30 and 90 m respectively from the eastern and western boundaries. They are about 180 m from each other and 180 m from the southern boundary. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201097b0
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  • 2
    Electronic Resource
    Electronic Resource
    A reinterpretation of stomatal responses to humidity (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 18 (1995), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The stomatal conductance (g) for single leaves and the equivalent canopy conductance for stands of vegetation are often represented in models as empirical functions of saturation vapour pressure deficit or relative humidity. The mechanistic basis of this dependence is very weak. A reanalysis of 52 sets of measurements on 16 species supports the conclusion of Mott & Parkhurst (1991, Plant, Cell and Environment 14, 509–515) that stomata respond to the rate of transpiration (E) rather than to humidity per se. In general, ∂g/∂E is negative and constant so that the relation between g and E can be defined by two parameters: a maximum conductance gm obtained by extrapolation to zero transpiration, and a maximum rate of transpiration Em obtained by extrapolation to zero conductance. Both parameters are shown to be functions of temperature, CO2 concentration, and soil water content. Exceptionally, transpiration rate and conductance may decrease together in very dry air, possibly because of patchy closure of stomata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1995.tb00371.x
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  • 3
    Electronic Resource
    Electronic Resource
    Daylength change and leaf appearance in winter wheat (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 3 (1980), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract In the field successive leaves of winter wheat appear at a rate which varies because it depends strongly upon temperature. When plotted against ‘thermal time’, however (temperature accumulated above a fixed base of 0°C), leaf appearance was a strictly linear function of temperature. The mean rate of leaf appearance in thermal time, R′, was faster for a spring sowing than for an autumn sowing. The variation in R′ between sowings was better correlated with the rate at which daylength was changing when the plants emerged than with the mean daylength while leaves were appearing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11581834
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  • 4
    Electronic Resource
    Electronic Resource
    A BIOLOGIST'S BASIC MATHEMATICS (Book). (1984)
    Oxford, UK : Blackwell Publishing
    Plant, cell & environment 7 (1984), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11616250
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  • 5
    Electronic Resource
    Electronic Resource
    Book review (1983)
    Springer
    Irrigation science 3 (1983), S. 269-270 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00272842
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  • 6
    Electronic Resource
    Electronic Resource
    In Memoriam Howard Latimer Penman (1909–1984) (1987)
    Springer
    Irrigation science 8 (1987), S. 77-79 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00259472
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  • 7
    Electronic Resource
    Electronic Resource
    The exchange of water and carbon by crops in a mediterranean climate (1993)
    Springer
    Irrigation science 14 (1993), S. 85-91 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The amount of biomass accumulated by a crop stand per unit of water transpired is referred to as a Biomass Water Ratio (BWR). The paper is mainly concerned with the dependence of BWR on climatic factors, in particular, saturation vapour pressure deficit (D) and precipitation (P) with which D is highly correlated in a mediterranean climate. A method is outlined for estimating the amount of water evaporated from bare soil during the establishment phase of a crop as a fraction of total seasonal water use. A simple model is derived for the BWR as a function of climate and of two stomatal parameters derived from a relation between stomatal conductance and transpiration. Values of BWR are presented for three contrasting stations in Israel and are shown to be strongly correlated with D and therefore with P. The model is combined with an empirical relation between the Priestley-Taylor coefficient and surface resistance in order to establish a new relation between BWR and resistance and to demonstrate that BWR × D is almost independent of resistance above 100 sm−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208401
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  • 8
    Electronic Resource
    Electronic Resource
    Book reviews (1996)
    Springer
    Irrigation science 16 (1996), S. 175-178 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02338968
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  • 9
    Electronic Resource
    Electronic Resource
    Resistance of a partially wet canopy: Whose equation fails? (1977)
    Springer
    Boundary layer meteorology 12 (1977), S. 379-383 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Shuttleworth's analysis of evaporation from partly wet canopies is appropriate only for the unrealistic case of dispersed, minute water droplets. When a more realistic model is used, the predicted range of canopy resistances is consistent with experimental estimates for a pine forest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121475
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  • 10
    Electronic Resource
    Electronic Resource
    Radiative surface temperature and energy balance of a wheat canopy (1986)
    Springer
    Boundary layer meteorology 36 (1986), S. 107-116 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The sensible heat loss from a stand of winter wheat was calculated from radiometric measurements of crop surface temperature, measurements of air temperature, and an atmospheric resistance to momentum transfer; corresponding latent heat flux was obtained through the energy balance equation. These estimates of sensible and latent heat were compared with fluxes from the Bowen Ratio method. When radiative temperature was derived using a measured canopy emissivity of 0.98, calculations of sensible heat flux were systematically 50–100 W m-2 less than Bowen Ratio values. The two techniques agreed more closely when an apparent emissivity of 0.96 was used with an apparent reflectivity of 0.03. The mean difference between the estimates of latent heat flux was then -16 ± 32 W m-2. The surface temperature method showed less systematic error in comparison with the Bowen Ratio values than did estimates using the aerodynamic method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117462
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