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| Web URL(s): | http://www.jstor.org/stable/pdfplus/2258825.pdf
Last checked: 08/09/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Williamson, Phillip |
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| Author Affiliation: | Department of Biological Sciences, Portsmouth Polytechnic |
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| Title: | Above-ground primary production of chalk grassland allowing for leaf death |
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| Source: | Journal of Ecology. Vol. 64, No. 3, November 1976, p. 1059-1075. |
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| # of Pages: | 17 |
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| Related Web URL: | http://www.jstor.org/stable/info/2258825
Last checked: 08/09/2012
Notes: Abstract only |
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| Keywords: | TIC Keywords: Arrhenatherum elatius; Dactylis glomerata; Festuca rubra subsp. rubra; Helictotrichon pratense; Temperatures; Biomass determination
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| Geographic Terms: | UK |
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| Abstract/Contents: | "(1) Measurements were made to determine the life-span of leaves of five common chalkland grasses: Arrhenatherum elatius, Dactylis glomerata, Festuca rubra, Helictotrichon pratense and H. pubescens. Survival time varied from six weeks to six months, depending on species and time of year. (2) Probit transformation straightened the survivorship curves obtained from sets of leaves marked on the same occasion. Rates of leaf death could then be described as a function of temperature and the time to 50% death estimated for field conditions. (3) Application of turnover time to harvest data raised the estimate of net above-ground production to 691 g m-2 yr -1 (13 320 kJ m-2 yr-1). This figure was less than the maximum recorded biomass, living and dead (773 g m-2 yr-1), but 2.1 times higher than the sum of species increase in living biomass (332 g m -2 yr-1). (4) Results from other studies confirm that the determination of biomass turnover is necessary for the correct estimation of primary production by harvest methods." |
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| Language: | English |
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| References: | 32 |
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| Note: | Summary appears as abstract
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Williamson, P. 1976. Above-ground primary production of chalk grassland allowing for leaf death. J. Ecol. 64(3):p. 1059-1075. |
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| Web URL(s):
http://www.jstor.org/stable/pdfplus/2258825.pdf
Last checked: 08/09/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 540 .J6 |
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