Characterization of the canopy structure of Dutch grasslands

Fliervoet, L. M.

doi:10.1007/bf00041476

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…In dense stands of herbaceous vegetation there is a strong vertical light gradient, with low light availability at the bottom and increasingly higher light supply in the upper parts of the canopy (Monsi & Saeki 1953;Fliervoet 1984;Hirose & Werger 1995). Elongation of vertical spacers is likely to enhance light harvesting by species in such canopies.…”

Section: Structuresmentioning

confidence: 99%

Plasticity of Internodes and Petioles in Postrate and Erect Potentilla Species

Huber¹

1996

Functional Ecology

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1. In phylogenetically related species, internodes of erect and stoloniferous plants are homologous structures, whereas petioles of prostrate plants and internodes of erect plants are structurally analogous, i.e. they have the same ecological function. 2. The hypothesis was tested that analogous spacing organs would show similar degrees of plasticity in response to shading, whereas homologous spacing organs would not. Four closely related Potentilla species representing a range of growth forms from strictly erect to obligatory stoloniferous were studied. 3. Vertical spacers showed significantly higher degrees of plasticity than horizontal spacers in response to shading, confirming the hypothesis that analogous organs show a similar response, whereas homologous spacers differed significantly in their plasticity. 4. Under shaded conditions high degrees of elongation in vertical spacers were accompanied by a significant increase in biomass allocation to these organs, whereas allocation to horizontal spacers tended to be less than under unshaded conditions. This result suggests that significant biomass investments are associated with plastic elongation responses. 5. The results of the study are discussed in the context of specific selection pressures acting on different growth forms which may alter the degree of morphological plasticity of plant organs during evolution.

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Section: Structuresmentioning

confidence: 99%

Plasticity of Internodes and Petioles in Postrate and Erect Potentilla Species

Huber¹

1996

Functional Ecology

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Ecosystem Research (Ecological Botany)

Schmidt¹

1989

Progress in Botany

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A new method to determine some characters of vegetation structure

Barkman¹

1988

Vegetatio

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The ecological importance of both horizontal and vertical denseness of vegetation is discussed. Existing methods to analyse them are reviewed and a new method is proposed. Horizontal and vertical denseness are estimated, both per layer of 10 cm and cumulative. From these data the following parameters are calculated: degree of overlap between layers, plant area index per layer, and average inclination per layer. The values thus obtained are compared with values measured directly or calculated otherwise. Some examples are given to illustrate the method.

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Characterization of the canopy structure of Dutch grasslands

Cited by 5 publications

References 26 publications

Plasticity of Internodes and Petioles in Postrate and Erect Potentilla Species

Plasticity of Internodes and Petioles in Postrate and Erect Potentilla Species

Ecosystem Research (Ecological Botany)

A new method to determine some characters of vegetation structure

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