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| Wiegers, J.; Vries, E.J. de. |
| Salix pentandra L. occurs in the Netherlands predominantly in the Drenthe district and adjacent parts of the Haff district in Northwest Overijssel. On the Wadden islands Schiermonnikoog and Terschelling 5. pentandra is a differentiating species of the shrub community Salicetum pentandro-arenariae. In the provinces of Drenthe and Overijssel S. pentandra is a differentiating species of the Alnion glutinosae with respect to all other forest classes, and a differentiating species of the shrub community Salicetum pentandro-cinereae. Concentrations of seedlings of S. pentandra were almost exclusively found in rather open vegetation on wet, acid soils poor in nitrogen. In Drenthe young 5. pentandra was found in stands of tall herbs, phytosociologically related to... |
| Tipo: Article / Letter to the editor |
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| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/527792 |
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| Wiegers, J.; Menschaar, M.. |
| On ten localities where Leucojum aestivum occurs, vegetation and soil profile were described, the length of leaves and flower stalks was measured, and the number of flowers per inflorescence was counted. The accompanying species were characteristic for Convolvuletalia-, Phragmitetalia and Magnocaricetalia- or Molinietalia-vegetations. On the three sites within the tidal area individual plants and tufts of plants tended to attain the greatest dimensions. The substrate on these sites was a nearly unripened clayey soil with a high percentage of organic material, strongly resembling the soils on the other sites, which were initial raw peat soils, sometimes more or less clayey. Seedlings of L. aestivum were most common on undisturbed waterlogged peaty soils. To... |
| Tipo: Article / Letter to the editor |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/527681 |
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