Article (Scientific journals)
Variation of growth and functional traits of invasive knotweeds (Fallopia spp.) in Belgium
Herpigny, B.; Dassonville, N.; Ghysels, P. et al.
2012In Plant Ecology, 213 (3), p. 419-430
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Keywords :
Biological invasions; Fallopia; Functional traits; Growth; Nitrogen; SLA; Belgium; Fallopia sachalinensis
Abstract :
[en] Three invasive Fallopia taxa are present in Belgium: F. japonica (FJ), F. sachalinensis (FS) and their hybrid F. × bohemica (FB). FS is the least invasive of the three taxa. In this study, we compared the taxa, in sites where they co-occur, for differences in functional traits that might influence their competitive ability and invasiveness-shoot height and ramification, leaf size, specific leaf area (SLA) and foliar nitrogen (N) concentration. The three taxa exhibited similar growth kinetics and similar SLA. However, FS differed in its architecture and allocation of leaf area, having less ramified shoots and a steeper gradient of decreasing leaf size along the main shoot. Also, FS had greater foliar N and less efficient N resorption from senescing leaves. These traits values may result in lower competitive ability of FS for light and nitrogen. For the same traits, FB was generally intermediate between FS and FJ, but often closer to the latter. FB was more variable than FS and FJ, possibly due to larger genetic variation. SLA and ramification varied greatly amongst sites for all taxa, due in part to plastic response to contrasting light regimes. Variation in functional traits values may in part explain the variation in invasiveness amongst the members of the Fallopia complex in Belgium. © 2011 Springer Science+Business Media B.V.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Herpigny, B.;  Laboratoire d'Ecologie Végétale et Biogéochimie, Université Libre de Bruxelles, AV FD Roosevelt 50, CP 244, 1050 Brussels, Belgium
Dassonville, N.;  Laboratoire d'Ecologie Végétale et Biogéochimie, Université Libre de Bruxelles, AV FD Roosevelt 50, CP 244, 1050 Brussels, Belgium
Ghysels, P.;  Laboratoire d'Ecologie Végétale et Biogéochimie, Université Libre de Bruxelles, AV FD Roosevelt 50, CP 244, 1050 Brussels, Belgium
Mahy, Grégory ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Meerts, P.;  Laboratoire d'Ecologie Végétale et Biogéochimie, Université Libre de Bruxelles, AV FD Roosevelt 50, CP 244, 1050 Brussels, Belgium
Language :
English
Title :
Variation of growth and functional traits of invasive knotweeds (Fallopia spp.) in Belgium
Publication date :
2012
Journal title :
Plant Ecology
ISSN :
1385-0237
eISSN :
1573-5052
Publisher :
Kluwer Academic Publishers, Netherlands
Volume :
213
Issue :
3
Pages :
419-430
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
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