Extensive physiological integration in intact clonal systems ofCarex arenaria
نویسندگان
چکیده
منابع مشابه
Short-term fitness benefits of physiological integration in the clonal herb Hydrocotyle peduncularis
We test whether physiological integration enhances the short-term fitness of the clonal herb Hydrocotyle peduncularis (Apiaceae, R. Brown ex A. Richards) subjected to spatial variation in water availability. Our measures of fitness and costs and benefits are based on the relative growth rate of fragmented genets. Physiological integration over a gradient in soil moisture resulted in a highly si...
متن کاملPhysiological Integration Ameliorates Negative Effects of Drought Stress in the Clonal Herb Fragaria orientalis
Clonal growth allows plants to spread horizontally and to establish ramets in sites of contrasting resource status. If ramets remain physiologically integrated, clones in heterogeneous environments can act as cooperative systems--effects of stress on one ramet can be ameliorated by another connected ramet inhabiting benign conditions. But little is known about the effects of patch contrast on p...
متن کاملThe quantitative assessment of the benefits of physiological integration in clonal plants
A genet of a clonal plant often has ramets persistently interconnected by living tissue capable of supporting the exchange of materials. This condition is known as physiological integration. A quantitative framework is developed for the study of the fitness benefits of physiological integration in clonal plants in spatially heterogeneous environments. We argue that the relative growth rate of t...
متن کاملPhysiological Integration Affects Expansion of an Amphibious Clonal Plant from Terrestrial to Cu-Polluted Aquatic Environments
The effects of physiological integration on clonal plants growing in aquatic and terrestrial habitats have been extensively studied, but little is known about the role in the extension of amphibious clonal plants in the heterogeneous aquatic-terrestrial ecotones, especially when the water environments are polluted by heavy metals. Ramets of the amphibious clonal herb Alternanthera philoxeroides...
متن کاملShifting effects of physiological integration on performance of a clonal plant during submergence and de-submergence.
BACKGROUND AND AIMS Submergence and de-submergence are common phenomena encountered by riparian plants due to water level fluctuations, but little is known about the role of physiological integration in clonal plants (resource sharing between interconnected ramets) in their adaptation to such events. Using Alternanthera philoxeroides (alligator weed) as an example, this study tested the hypothe...
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ژورنال
عنوان ژورنال: Journal of Ecology
سال: 1999
ISSN: 0022-0477,1365-2745
DOI: 10.1046/j.1365-2745.1999.00345.x