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| Web URL(s): | http://www.jstor.org/stable/pdfplus/2260108.pdf
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| Publication Type:
| Refereed |
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| Author(s): | Grubb, P. J. |
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| Author Affiliation: | Botany School, Cambridge |
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| Title: | Control of relative abundance in roadside Arrhenatheretum: results of a long-term garden experiment |
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| Source: | Journal of Ecology. Vol. 70, No. 3, November 1982, p. 845-861. |
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| # of Pages: | 17 |
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| Related Web URL: | http://www.jstor.org/stable/info/2260108
Last checked: 08/06/2012
Notes: Abstract only |
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| Keywords: | TIC Keywords: Arrhenatherum elatius; Dactylis glomerata; Festuca rubra subsp. rubra; Plantago lanceolata; Competition; Ecology
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| Abstract/Contents: | "(1) In 1973 an outdoor experiment was begun to test the role of interference in determining the relative abundances of four species which grow together in roadside Arrhenatheretum, a community which is normally cut once a year. The experiment has continued for 8 yr. (2) The species used were Arrhenatherum elatius (the species with overwhelmingly the largest biomass at field sites), Dactylis glomerata (a tall grass of high frequency but a much lower mean biomass), Festuca rubra (a shorter grass of high frequency and low mean biomass) and Plantago lanceolata (a forb of moderate frequency and low mean biomass). (3) Harvests taken after 1 and 2 yr (in 1974 and 1975) yielded useful information on the potential for short-term interference, but the most valuable results did not emerge until the fifth year, 1978, when the abilities of the various species to invade and replace each other became apparent. (4) The overwhelming abundance of Arrhenatherum elatius at field sites is interpreted as being a result of its ability to invade and suppress all three of the other species, and to exclude invaders where it is established in single-species stands. The relationship between A. elatius and the other species is in some ways like that between a tree and other life-forms in a woodland; the subsidiary species, once established in mixture, can be strongly suppressed but are not readily ousted. (5) It is suggested that Dactylis glomerata and Plantago lanceolata retain their place in the community by being superior to Arrhenatherum elatius in invading gaps, at least under certain conditions. Festuca rubra grows slowly at first, but it spreads widely by stolons, persists for a long time, and forms an understorey to Arrhenatherum elatius. The lesser frequency as well as smaller mean biomass of Plantago lanceolata, compared with Dactylis glomerata and Festuca rubra, is probably a result of its being shorter-lived than the other two under a regime of once-yearly cutting." |
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| Language: | English |
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| References: | 17 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Grubb, P. J. 1982. Control of relative abundance in roadside Arrhenatheretum: results of a long-term garden experiment. J. Ecol. 70(3):p. 845-861. |
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| Web URL(s):
http://www.jstor.org/stable/pdfplus/2260108.pdf
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http://www.jstor.org/stable/view/2260108
Last checked: 08/06/2012
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MSU catalog number: QH 540 .J6 |
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