The size structure of ramets in Dianthus superbus L. in mosaic meadow vegetation

Kinga Kostrakiewicz-Gierałt

Abstract


The present investigations were carried out in the years 2010–2012 in Kraków-Opatkowice (Southern Poland). The observations were conducted in patches of abandoned Molinietum caeruleae meadows with different dominant species. Patch LM was dominated by low meadow species, forming small procumbent shoots and delicate belowground organs; patch TM was occupied by tall-growing taxa creating large tussocks or robust rhizomes; patch SH was overgrown by shrubs and trees with wide spreading roots. In all patches, the number of ramet clusters of Dianthus superbus was low and constant during the whole study period. All populations showed signs of advanced senility due to the absence of individuals in pre-reproductive stages and the occurrence of generative ramet clusters only. The total number of aboveground units per ramet cluster declined, while the leaf length, height of vegetative and generative stems as well as the size of inflorescences and flowers increased from patch LM to patch TM to patch SH. The presented results provide valuable data concerning the state of ramet clusters studied and their prospects for survival in inhabited sites.

Keywords


Dianthus superbus L.; abundance; cluster of ramets; endangered species; meadow community; population structure

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References


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