Pattern of storage and regrowth in ragwort

Citation
E. Van Der Meijden et al., Pattern of storage and regrowth in ragwort, EVOL ECOL, 14(4-6), 2000, pp. 439-455
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
EVOLUTIONARY ECOLOGY
ISSN journal
0269-7653 → ACNP
Volume
14
Issue
4-6
Year of publication
2000
Pages
439 - 455
Database
ISI
SICI code
0269-7653(2000)14:4-6<439:POSARI>2.0.ZU;2-3
Abstract
Ragwort plants were damaged experimentally by removing the whole shoot. Wit hin about 1 month the original allocation pattern of biomass to root and sh oot was reestablished to a large extent. If left undisturbed for a longer p eriod, plant growth accelerated into compensatory growth. Intraspecific var iation in storage and tolerance (shoot weight), 1 month after damage, was s ignificant. We could not detect a trade-off between storage or tolerance an d relative growth rate of control plants. Consequently there are no indicat ions for costs involved in storage of resources or in tolerating damage. Al though tolerance is thought to be dependent upon storage of resources, we d etected no effect of storage on tolerance after one event of damage. Storag e is genotype specific, but at the same time highly plastic. We hypothesize that the value of storage in ragwort only becomes evident after repeated d isturbances. Competition, history of herbivory and change of season all aff ected storage radically.