Classifying clonal growth forms based on vegetative mobility and ramet longevity: a whole community analysis

Tamm, Anneli; Kull, Kalevi; Sammul, Marek

doi:10.1023/a:1016093116926

Cited by 64 publications

(61 citation statements)

References 25 publications

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“…The estimated clonal growth parameters for the studied population were very similar to those estimated by Kull (1995), Tamm et al (2002) and Sammul et al (2003) for a coastal population of S. albicans in Estonia. The annual increment of rhizome was identical for the compared populations (median = 13 mm), while the maximum value was higher for the Estonian population (86.6 mm in comparison to 31 mm in our population).…”

Section: Discussionsupporting

confidence: 84%

Spatial genotypical diversity of Sesleria albicans (Poaceae) in a dry grassland community

Janišová

Gömöry

2007

Biologia

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Spatial genotypical diversity of Sesleria albicans Kit. ex Schultes was studied in a dry grassland community by isozyme analysis. The aim was to identify the genetical individuals within the studied population and to assess the species' clonal growth parameters. Vegetative mobility and branching intensity were measured in field for the sake of the correct interpretation of the results. Five isozyme systems were analyzed and interpreted (MDH, MNR, 6-PGDH, SkDH, LAP). Altogether, 98 distinct isozyme profiles were identified within an area of 2 m 2 . Average genotype identity rapidly decreased with distance. Several very remote ramets (more than 1 m) belonging to the same genet were identified. The longest distance between ramets of the same genotype was 153 cm. With average annual rhizome increment of 13.59 mm assessed for the studied population the age of genet with the most remote ramets exceeded 56 years by a bi-directional growth and 112 years by a growth in single direction. Number of daughter tillers produced by a tiller per year was 0.67 (branching intensity, median) and the median of tiller life span was 2.5 years. The high genotypical diversity of S. albicans in the studied population could be a result of both, regular and continuous seed production with subsequent seedling recruitment and long life span of genets.

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Section: Discussionsupporting

confidence: 84%

Spatial genotypical diversity of Sesleria albicans (Poaceae) in a dry grassland community

Janišová

Gömöry

2007

Biologia

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“…Iris pseudacorus and Filipendula ulmaria proliferated most intensively in meadows, less intensively in macroforb communities, and even less in willow shrubs (Faliñska 1986(Faliñska , 1995. The differences in the proliferation rates of the genets of Filipendula ulmaria were also noted in patches of meadows of different species compositions (Tamm et al 2002). The observations of populations of Iris sibirica suggest that the proliferation of this species is different even within meadows of similar species composition, but with different dominant species.…”

Section: Discussionmentioning

confidence: 98%

The effect of dominant species on numbers and agę structure of Iris sibirica L. population on blue moor-grass meadow in southern Poland

Kostrakiewicz

2011

Acta Soc Bot Pol

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Two populations of Iris sibirica, a clonal species protected by law in Poland, occurring in patches of Molinietum caeruleae, of similar floristic composition although with different dominant species, were studied. In the Stanis³awice locality, species with a high competitive potential prevailed, contrary to the Opatkowice locality, where the species of low competitive potential dominated. It was established that vegetative propagation ensures the continued presence of populations in both localities, although the proximity of plants with high competitive potential limits the vegetative propagation of ramet clusters of Iris sibirica. Despite the high level of seed production, the recruitment of seedlings in both patches is possible only in artificially created gaps. The field observations support the conclusion that creating gaps allowing for germination of seeds and development of seedlings, as well as eliminating expansive neighbours allowing proliferation of ramet clusters of Iris sibirica, is an affective way of protecting populations of this species.

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“…1), nor to reduced temporal variance in productivity (P > 0.15 for ANOVAs comparing mixtures versus monocultures for either the SD or coeYcient of variation over time of raw biomass or biomass z-scores). We can speculate that the relatively slow rate of ramet turnover in dense vegetation (most ramets live for a year or more; Tamm et al 2002) constrained the rate at which bluegrass mixtures could respond to selection. This is in marked contrast to systems with very rapid turnover of individuals, such as aquatic invertebrates or microbes, in which genotype compositional changes can keep pace with rapidly changing selection pressures (e.g.…”

Section: Genetic Diversity In Kentucky Bluegrassmentioning

confidence: 99%

Effects of genotype identity and diversity on the invasiveness and invasibility of plant populations

2009

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Genetic diversity within species is a potentially important, but poorly studied, determinant of plant community dynamics. Here we report experiments testing the influence of genotype identity and genotypic diversity both on the invasibility of a foundation, matrix-forming species (Kentucky bluegrass, Poa pratensis), and on the invasiveness of a colonizing species (dandelion, Taraxacum officinale). Genotypes of Kentucky bluegrass in monoculture showed significant variation in productivity and resistance to dandelion invasion, but the productivity and invasion resistance of genotypic mixtures were not significantly different from those of genotypic monocultures. Indirect evidence suggested temporal shifts in the genotypic composition of mixtures. Dandelion genotypes in monoculture showed striking and significant variation in productivity and seed production, but there was no significant tendency for these variables in mixtures to deviate from null expectations based on monocultures. However, productivity and seed production of dandelion mixtures were consistently greater than those of the two least productive genotypes, and statistically indistinguishable from those of the three most productive genotypes, suggesting the possibility of greater invasiveness of genotypically diverse populations in the long run due to dominance by highly productive genotypes. In both experiments, the identity of genotypes was far more important than genetic diversity per se.

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Classifying clonal growth forms based on vegetative mobility and ramet longevity: a whole community analysis

Cited by 64 publications

References 25 publications

Spatial genotypical diversity of Sesleria albicans (Poaceae) in a dry grassland community

Spatial genotypical diversity of Sesleria albicans (Poaceae) in a dry grassland community

The effect of dominant species on numbers and agę structure of Iris sibirica L. population on blue moor-grass meadow in southern Poland

Effects of genotype identity and diversity on the invasiveness and invasibility of plant populations

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