Intratussock tiller distribution and biomass of Spartina densiflora Brongnin an invaded salt marsh
- Castillo Segura, Jesús Manuel 2
- Rubio Casal, Alfredo Emilio 2
- Luque Palomo, Teresa 2
- Figueroa Clemente, Manuel Enrique 2
- Jiménez Nieva, Francisco Javier 1
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1
Universidad de Huelva
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2
Universidad de Sevilla
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ISSN: 0210-7708
Année de publication: 2003
Volumen: 23
Número: 1
Pages: 61-73
Type: Article
D'autres publications dans: Lagascalia
Résumé
The interaction of clonal plants with the environment is strongly conditioned by their architecture. Despite their success regarding geographical distribution and capacity of colonization, there are few detailed studies on clonal growth of "phalanx" species. We analysed intratussock tiller distribution and biomasa of the South American "phalanx" clonal alien, Spartina densiflora, in an invaded salt marsh located in the Golf of Cadiz (SW Iberian Peninsula). Appearance of central die-back, necromass biomasa and mean live tiller height showed a direct relationship with tussock size. Intra-tussock densities of live tillers (10000 Ciller m-²) and above-ground biomass (12000 g D W m-²) were higher Chan in other Spartina species with "guerrilla' clonal growth. However, below-ground biomasa values (4800 g D W m2) were similar. Clonal growth traits, as high denaities of live large tiller and high below-ground biomass, together with so integrated clonal functioning would prevent the colonization by other species of S. densiflora tussocks in the studied European invaded salt marsh, in contrast with the facilitation processes described in its original habitat.