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| Web URL(s): | http://www.jstor.org/stable/pdf/10.2307/2261675.pdf
Last checked: 01/14/2016
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| Publication Type:
| Refereed |
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| Author(s): | Ramsell, J.;
Malloch, A. J. C.;
Whittaker, J. B. |
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| Author Affiliation: | Division of biological sciences, Institute of Environmental Sciences, Lancaster University, Bailrigg, Lancaster |
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| Title: | When grazed by Tipula paludosa, Lolium perenne is a stronger competitor of Rumex obtusifolius |
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| Source: | Journal of Ecology. Vol. 81, No. 4, December 1993, p. 777-786. |
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| Publishing Information: | Blackwell Scientific Publications |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Lolium perenne; Tipula paludosa; Rumex; Feeding preferences; Seedling competition; Larva
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| Abstract/Contents: | Summary: 1) Experiments were conducted to investigate the effect of root-grazing by Tipula paludosa on competitive interactions between Rumex obtusifolius and Lolium perenne in the glasshouse. 2) Preference tests found that T. paludosa larvae preferred L. perenne to R. obtusifolius plant material, consuming twice as much of the former when presented with either the shoot material or the whole plant. 3) Competition experiments involved replacement series at a range of planting densities and the methodology of Jolliffe et al. (1984) 4) Leatherjacket grazing significantly reduced L. perenne but not R. obtusifolius dry weights in monoculture in the glasshouse. 5) Reduced L. perenne total plant dry weights in grazed monocultures consisted primarily of reduced amounts of root material, reflected in a lower L. perenne root: shoot ratio in the presence of tipulids. 6) Intraspecific competition in R. obtusifolius monocultures was not significantly affected by tipulid grazing, but in L. perenne monocultures, it was significantly greater in grazed than ungrazed treatments. 7) Tipulid grazing significantly reduced L. perenne plant dry weight in mixtures, while having no significant effect on R. obtusifolius dry weights. 8) Tipulid grazing of L. perenne reduced the impact of interspecific competition from R. obtusifolius on L. perenne, implying that grazed L. perenne was a stronger competitor than ungrazed L. perenne. 9) It appears that root grazing of the grass led to a relative increase in the shoot production of L. perenne which together bestowed an increased competitive ability on grazed L. perenne when in competition with R. obtusifolius. |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ramsell, J., A. J. C. Malloch, and J. B. Whittaker. 1993. When grazed by Tipula paludosa, Lolium perenne is a stronger competitor of Rumex obtusifolius. J. Ecol. 81(4):p. 777-786. |
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| Web URL(s):
http://www.jstor.org/stable/pdf/10.2307/2261675.pdf
Last checked: 01/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QH 540 .J6 |
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