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Web URL(s): | http://www.jstor.org/stable/pdfplus/2258951.pdf Last checked: 08/09/2012 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Arnold, Sylvia M.;
Monteith, J. L. |
Author Affiliation: | Arnold: Department of Biology, University of York, Heslington, York; Monteith: Department of Physiology and Environmental Studies, University of Nottingham School of Agriculture, Sutton Boningham, Loughborough |
Title: | Plant development and mean temperature in a Teesdale habitat |
Source: | Journal of Ecology. Vol. 62, No. 3, November 1974, p. 711-720. |
# of Pages: | 10 |
Related Web URL: | http://www.jstor.org/stable/info/2258951 Last checked: 08/09/2012 Notes: Abstract only |
Keywords: | TIC Keywords: Festuca ovina; Sesleria albicans; Seed germination; Temperatures
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Geographic Terms: | UK |
Abstract/Contents: | "From 1970 to 1972, temperature was measured on Widdybank Fell, Upper Teesdale, from 5 cm above ground to 15 cm below the surface. Daily mean temperature changed little throughout the profile and the mean air temperature in a grass tussock was close to the mean recorded at screen height in a climatological station nearby. As expected, the amplitude of daily temperature fluctuations in the tussock was greater than the amplitude at screen height and was much greater than the soil temperature amplitude. In a complementary laboratory study, the temperature dependence of germination percentage and of the elongation rate of seedling leaves was investigated for three Teesdale species, Festuca ovina, Sesleria albicans, and Kobresia simpliciuscula. Temperature oscillations were imposed with a period of 24 h and amplitudes up to ± 9°C. In general, germination percentage and leaf elongation rate were strongly correlated with mean temperature but were independent of amplitude. The germination percentage of all three species reached a maximum between 15 and 18°C but leaf elongation rate of Festuca ovina increased almost linearly with temperature between 5 and 25°C. The combination of field and laboratory measurements suggests that details of microclimate may often be of secondary importance in determining the influence of the environment on plant development, and that more attention should be paid to the physiological mechanisms responsible for the thermal sensitivity of germination, leaf extension, and other processes." |
Language: | English |
References: | 9 |
Note: | Summary appears as abstract Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Arnold, S. M., and J. L. Monteith. 1974. Plant development and mean temperature in a Teesdale habitat. J. Ecol. 62(3):p. 711-720. |
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| Web URL(s): http://www.jstor.org/stable/pdfplus/2258951.pdf Last checked: 08/09/2012 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: QH 540 .J6 |
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