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| Web URL(s): | http://www.nrcresearchpress.com/doi/pdf/10.1139/b93-067
Last checked: 09/29/2015
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): | Reader, R. J.;
Bonser, S. P. |
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| Author Affiliation: | Department of Botany, University of Guelph, Guelph, Ont., Canada |
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| Title: | Control of plant frequency on an environmental gradient: effects of abiotic variables, neighbours, and predators on Poa pratensis and Poa compressa (Gramineae) |
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| Source: | Canadian Journal of Botany. Vol. 71, No. 4, April 1993, p. 592-597. |
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| Publishing Information: | Vancouver, British Columbia: The National Research Council of Canada. |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.nrcresearchpress.com/doi/abs/10.1139/b93-067
Last checked: 09/29/2015
Notes: English abstract only |
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| Keywords: | TIC Keywords: Poa pratensis; Poa compressa; Tillers (vegetative); Seedlings; Establishment; Competition; Predation
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| Abstract/Contents: | "Effects of abiotic variables, neighbours, and predators on seedling establishment and tiller production of two perennial grasses (Poa pratensis L. and Poa compressa L.) were determined on a topographic gradient in an abandoned pasture. Seeds and plants of each species were added to experimental plots set up both at the top (ridges) and bottoms (hollows) of hills. Seedling establishment and tiller number per plant were each compared where seeds (or plants) were exposed to abiotic variables with and without the presence of neighbours and (or) predators. For P. pratensis, which occurred naturally more often in holllows than on ridges, abiotic variation appeared to be most important in controlling its frequency on the gradient. Tiller production was significantly lower on ridges than in hollows where plants were exposed only to abiotic variables (i.e. neighbours removed and predators excluded). For P. compressa, which occurred naturally less often in hollows than on ridges, greater suppression of seedling emergence by neighbours in hollows than on ridges appeared to be the factor controlling its frequency on the gradient. These results provide support for the view that variation in plant frequency across an environmental gradient reflects abiotic variation and differential effects of neighbours." |
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| Language: | English |
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| References: | Unknown |
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| Note: | Abstract also appears in French
Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Reader, R. J., and S. P. Bonser. 1993. Control of plant frequency on an environmental gradient: effects of abiotic variables, neighbours, and predators on Poa pratensis and Poa compressa (Gramineae). Can. J. Bot. 71(4):p. 592-597. |
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| Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b93-067
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .C3 |
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