Abstract
Elodea canadensis Michx. and Myriophyllum spicatum L. are widespread nuisance aquatic plant species. Their ecology is regarded as similar. Both species have been previously classified in terms of established-phase survival strategy as ‘competitive disturbance-tolerant’ species. Experimental data are presented to show that although this broad categorisation of strategy is probably correct for the two species, it is possible to demonstrate significant differences in terms of response to disturbance and competition. Less difference was discernible in their comparative response to stress. The drawbacks of applying broad descriptive terminology when dealing with two species of similar strategy are addressed. The results help explain reports of variable success in attempting to manage these two species using disturbance-based weed control measures, and suggest that Elodea is even less susceptible to such measures than Myriophyllum.
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Abernethy, V.J., Sabbatini, M.R. & Murphy, K.J. Response of Elodea canadensis Michx, and Myriophyllum spicatum L. to shade, cutting and competition in experimental culture. Hydrobiologia 340, 219–224 (1996). https://doi.org/10.1007/BF00012758
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DOI: https://doi.org/10.1007/BF00012758