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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Rapid response to shoot removal by the invasive wetland plant, alligator weed (Alternanthera philoxeroides)
Environmental and Experimental Botany, Volume 60, No. 1, Year 2007
Notification
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Description
Resprouting plants provide an interesting test to the generality of plant allometric relationships. The ability to rapidly resprout after disturbance also makes weeds more difficult to control. We performed a glasshouse experiment to investigate regrowth of an invasive plant (alligator weed, Alternanthera philoxeroides (Martius) Grisebach) after an experimental mowing treatment. Nutrient levels and biomass accumulation were measured weekly for five weeks, and carbohydrate levels were measured when regrowth was quickest. After five weeks, the biomass of treatment plants was similar to that expected from a growth curve fitted to undamaged control plants. Treatment plants, however, had a higher below-ground biomass, and a higher ratio of stem to leaf biomass than expected. The regrowing material also had a lower nutrient concentration. Both the rapid regrowth and the change in morphology make the mechanical control of alligator weed more difficult, and may, in part, be responsible for the invasiveness of this plant. © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Wilson, John R.
Australia, Canberra
Csiro Entomology
Australia, Adelaide
The Crc for Australian Weed Management
South Africa, Stellenbosch
Stellenbosch University
Yeates, Alice G.
Australia, Canberra
Csiro Entomology
Australia, Adelaide
The Crc for Australian Weed Management
Schooler, Shon S.
Australia, Canberra
Csiro Entomology
Australia, Adelaide
The Crc for Australian Weed Management
Julien, Michael H.
Australia, Canberra
Csiro Entomology
Australia, Adelaide
The Crc for Australian Weed Management
Statistics
Citations: 52
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/j.envexpbot.2006.06.003
ISSN:
00988472
Study Approach
Quantitative