Expansion of Tussilago farfara L. in disturbed environments. l. Population renewal under conditions of plant cover destruction

Anna Namura-Ochalska

Abstract


The effectiveness of renewal of a Tussilago farfara L. population after destruction of the plant cover was studied. This process proceded at a very intense rate mainly due to querilla type vegetative growth. In its successive years the renewing population was characterized by: 1) a dynamic spurt in the number of individuals in the first year after destruction, attaining a maximum the following year; 2) a complete lack of generative shoots in the first year; 3) high mortality of seedlings; 4) change in spatial structure; 5) increased differentiation in the way individual plants spread. Seven-year studies have shown that even drastic disturbances in the environment did not eliminate T. farfara, moreover, complete destruction of the plant cover created favourable conditions for population renewal.

Keywords


population dynamics; seasonal changes in population density; spatial structure; clonal growth

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DOI: https://doi.org/10.5586/asbp.1993.013

Journal ISSN:
  • 2083-9480 (online)
  • 0001-6977 (print; ceased since 2016)
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Publisher
Polish Botanical Society