Seedlings and ramets recruitment in two rhizomatous species of Rupestrian grasslands: Leiothrix curvifolia var. lanuginosa and Leiothrix crassifolia (Eriocaulaceae)

Coelho, Flávia Freitas; Capelo, Christina; Figueira, José Eugênio Côrtes

doi:10.1016/j.flora.2007.02.005

Cited by 20 publications

(25 citation statements)

References 41 publications

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“…Moreover, the pseudovivipary has been considered one of the most efficient modes for numerical increase of ramets (Grace, 1993). Therefore, in spite of the slow growth of rosettes, the population can experience a rapid numerical increase in ramets (Coelho et al, 2008b).…”

Section: Discussionmentioning

confidence: 99%

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Soil factors effects on life history attributes of Leiothrix spiralis and Leiothrix vivipara (Eriocaulaceae) on rupestrian grasslands in Southeastern Brazil

Coelho¹,

Martins²,

Figueira³

et al. 2014

Braz. J. Biol.

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In this study, we hypothesized that the life history traits of Leiothrix spiralis and L. vivipara would be linked to soil factors of the rupestrian grasslands and that rosette size would be influenced by soil moisture. Soil analyses were performed from five populations of L. spiralis and four populations of L. vivipara. In each area, three replicates were employed in 19 areas of occurrence of Leiothrix species, and we quantified the life history attributes. The microhabitats of these species show low favorability regarding to soil factors. During the dry season, their rosettes decreased in diameter due the loss of its most outlying leaves. The absence of seedlings indicated the low fecundity of both species. However, both species showed rapid population growth by pseudovivipary. Both L. spiralis and L. vivipara exhibit a kind of parental care that was quantified by the presence of connections between parental-rosettes and ramets. The findings of the present study show that the life history traits are linked to soil factors.Keywords: life history, mountain habitats, pseudovivipary, soil factors; water scarcity. Efeitos de fatores do solo nos atributos de história de vida deLeiothrix spiralis e Leiothrix vivipara (Eriocaulaceae) nos campos rupestres no Sudeste do Brasil.

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Section: Discussionmentioning

confidence: 99%

“…This process may repeat itself several times. Thus, L. vivpara is a pseudoviviparous canopy-forming species (Coelho et al, 2008b). In L. spiralis, the plantlets are formed late, only after the flower heads touch the ground.…”

Section: Study Speciesmentioning

confidence: 99%

Soil factors effects on life history attributes of Leiothrix spiralis and Leiothrix vivipara (Eriocaulaceae) on rupestrian grasslands in Southeastern Brazil

Coelho¹,

Martins²,

Figueira³

et al. 2014

Braz. J. Biol.

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“…In this case, resource transfer to younger rosettes would enhance flower and fruit production. Nevertheless, physiological integration between ramets and clonal plants under a more uniform environment may have a negative effect on offspring biomass (Alpert 1999 Coelho et al 2008b) and the maintenance of plant populations. In general, the persistence of clonal plants in the long term depends on a balance between the survival of genets through clonal growth after population establishment and recruitment through sexual reproduction (Jacquemyn et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Effect of rosette size, clonality and spatial distribution on the reproduction of Vriesea carinata (Bromeliaceae) in the Atlantic Forest of Paraná, southern Brazil

Silva

Varassin

2016

Acta Bot. Bras.

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Plant size and clonality are important traits for explaining the reproductive eff ort of clonal plants. Larger plants can invest more resources into reproduction, and clonality is known to increase reproductive eff ort. Moreover, reproductive eff ort is infl uenced by environmental variation, and so the spatial distribution of plants may aff ect plant reproductive eff ort. We investigated the eff ect of plant size, clonality and spatial distribution on the reproductive eff ort of Vriesea carinata in the Atlantic Forest in the state of Paraná, Brazil. We marked twenty individual plants and measured their rosette size, biomass and number, as well as rosette reproductive eff ort (number of fl owers, fruits and seeds). We also evaluated the relationship between reproductive eff ort and spatial distribution of plants. Reproductive eff ort did not correlate with size, whereas greater clonal growth contributed to a lower reproductive eff ort because rosettes within clones that had more rosettes set fewer fl owers. We found that plants growing closer to each other exhibited similar reproductive eff orts independently of vegetative traits, because reproductive traits were spatially autocorrelated. In Vriesea carinata, the main drivers of reproductive eff ort are clonality, which decreases fl ower production, and spatial factors, which result in greater similarity in reproductive eff orts among more proximate plants.

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“…Em ambientes adversos, usualmente pobres em nutrientes e submetidos à escassez hídrica, o estabelecimento e a sobrevivência de plântulas podem ser restritos, fi cando limitados a curtos episódios de condições favoráveis no tempo e no espaço (Eriksson & Fröborg 1996;Coelho et al 2008a). Assim, nestes ambientes heterogêneos, a reprodução clonal representa uma alternativa para a persistência da população, bem como para a seleção, exploração e colonização de novos microambientes (Sampaio et al 2004;Coelho et al 2007;2008a;b). A reprodução clonal prolonga a longevidade dos indivíduos da população quando os rametes permanecem unidos aos genetes e quando ocorre a formação de fragmentos independentes fi siologicamente, reduzindo os riscos de mortalidade dos genetes (Cook 1979;Callaghan 1987;Dong & Alaten 1999).…”

Section: Introductionunclassified

“…De uma forma geral, a estratégia compactada (falange) está associada a ambientes abertos, secos e pobres em nutrientes, enquanto que a fragmentada (guerrilha) a ambientes úmidos e ricos em nutrientes (van Groenendael et al 1996). No entanto, ambas as estratégias evoluíram em ambientes com escassez hídrica e de nutrientes (Coelho et al 2007;2008a;b), sendo favorecidas de forma distinta em microambientes com diferentes graus de cobertura vegetal.…”

Section: Introductionunclassified

Estratégia de crescimento clonal e fenologia de Syngonanthus chrysanthus Ruhland (Eriocaulaceae) nas baixadas entre dunas da Praia da Joaquina, Florianópolis, SC, Brasil

et al. 2010

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Estratégia de crescimento clonal e fenologia de. Syngonanthus chrysanthus occurs on coastal plains in southern and southeastern Brazil. The dune slacks are heterogeneous in time and space and have variable water availability, sometimes fl ooded, sometimes dry, thus restricting species recruitment. This study examined phenological aspects, life cycle, sexual and asexual reproduction as part of the life history strategy of the species. Syngonanthus chrysanthus is a perennial plant, potentially polycarpic, with high capacity of vegetative reproduction of the phalanx type, which allows it to establish in micro-habitats already colonized. Syngonanthus chrysanthus also evidenced establishment by seedlings and high seed production. The seeds are dispersed over the entire year and may increase the opportunity of the species to grow in suitable habitats in the dune slacks.

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Seedlings and ramets recruitment in two rhizomatous species of Rupestrian grasslands: Leiothrix curvifolia var. lanuginosa and Leiothrix crassifolia (Eriocaulaceae)

Cited by 20 publications

References 41 publications

Soil factors effects on life history attributes of Leiothrix spiralis and Leiothrix vivipara (Eriocaulaceae) on rupestrian grasslands in Southeastern Brazil

Soil factors effects on life history attributes of Leiothrix spiralis and Leiothrix vivipara (Eriocaulaceae) on rupestrian grasslands in Southeastern Brazil

Effect of rosette size, clonality and spatial distribution on the reproduction of Vriesea carinata (Bromeliaceae) in the Atlantic Forest of Paraná, southern Brazil

Estratégia de crescimento clonal e fenologia de Syngonanthus chrysanthus Ruhland (Eriocaulaceae) nas baixadas entre dunas da Praia da Joaquina, Florianópolis, SC, Brasil

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